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Spring Security SecurityFilterChain not working

I have a Spring Boot 3 project which has both web pages and an API. The REST API should be open (and use API keys) and the rest of the application will be authenticated. I have a separate filter which handles the key checking.
For example, if I do not supply an API key, and I use this security config, it does not return the correct JSON error and instead forward me to the login page.
#Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http.authorizeHttpRequests()
.requestMatchers("/api/**").permitAll()
.requestMatchers(EndpointRequest.to(HealthEndpoint.class)).permitAll()
.requestMatchers("/actuator/*").hasAuthority("ADMIN")
.anyRequest().authenticated()
.and().csrf().ignoringRequestMatchers("/api/**");
http.oauth2Login(withDefaults())
.logout()
.logoutUrl("/logout")
.addLogoutHandler(keycloakLogoutHandler)
.logoutRequestMatcher(new AntPathRequestMatcher("/logout", HttpMethod.GET.name()))
.logoutSuccessUrl("/");
return http.build();
}
Here is the debug:
2023-01-23T16:47:29.600 INFO 20700 --- [2)-172.22.34.73] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2023-01-23T16:47:29.600 INFO 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2023-01-23T16:47:29.600 DEBUG 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected StandardServletMultipartResolver
2023-01-23T16:47:29.600 DEBUG 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected AcceptHeaderLocaleResolver
2023-01-23T16:47:29.600 DEBUG 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected FixedThemeResolver
2023-01-23T16:47:29.601 DEBUG 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator#72c0080a
2023-01-23T16:47:29.601 DEBUG 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected org.springframework.web.servlet.support.SessionFlashMapManager#7586194b
2023-01-23T16:47:29.601 DEBUG 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : enableLoggingRequestDetails='false': request parameters and headers will be masked to prevent unsafe logging of potentially sensitive data
2023-01-23T16:47:29.601 INFO 20700 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
2023-01-23T16:47:32.136 DEBUG 20700 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.imsweb.seertransfer.controller.ApiController#processImport()
2023-01-23T16:47:32.138 DEBUG 20700 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.imsweb.seertransfer.controller.ApiController#processImport()
2023-01-23T16:47:32.145 DEBUG 20700 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest)
2023-01-23T16:47:32.147 DEBUG 20700 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest)
However if I switch the requestMatchers to "/**":
#Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http.authorizeHttpRequests()
.requestMatchers("/**").permitAll()
.requestMatchers(EndpointRequest.to(HealthEndpoint.class)).permitAll()
.requestMatchers("/actuator/*").hasAuthority("ADMIN")
.anyRequest().authenticated()
.and().csrf().ignoringRequestMatchers("/api/**");
http.oauth2Login(withDefaults())
.logout()
.logoutUrl("/logout")
.addLogoutHandler(keycloakLogoutHandler)
.logoutRequestMatcher(new AntPathRequestMatcher("/logout", HttpMethod.GET.name()))
.logoutSuccessUrl("/");
return http.build();
}
I now get the correct results back:
{
"timestamp": "2023-01-23T21:55:39.115Z",
"status": 401,
"error": "Unauthorized",
"message": "You must supply an access token",
"path": "/api/import"
}
and the log looks different:
2023-01-23T16:48:47.791 INFO 10824 --- [2)-172.22.34.73] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2023-01-23T16:48:47.792 INFO 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2023-01-23T16:48:47.792 DEBUG 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected StandardServletMultipartResolver
2023-01-23T16:48:47.792 DEBUG 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected AcceptHeaderLocaleResolver
2023-01-23T16:48:47.792 DEBUG 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected FixedThemeResolver
2023-01-23T16:48:47.793 DEBUG 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator#1910b7
2023-01-23T16:48:47.793 DEBUG 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Detected org.springframework.web.servlet.support.SessionFlashMapManager#6ee194ac
2023-01-23T16:48:47.793 DEBUG 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : enableLoggingRequestDetails='false': request parameters and headers will be masked to prevent unsafe logging of potentially sensitive data
2023-01-23T16:48:47.793 INFO 10824 --- [2)-172.22.34.73] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
2023-01-23T16:48:51.362 DEBUG 10824 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.imsweb.seertransfer.controller.ApiController#processImport()
2023-01-23T16:48:51.365 DEBUG 10824 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.imsweb.seertransfer.controller.ApiController#processImport()
2023-01-23T16:48:51.372 DEBUG 10824 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest)
2023-01-23T16:48:51.374 DEBUG 10824 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : "ERROR" dispatch for POST "/error", parameters={}
2023-01-23T16:48:51.376 DEBUG 10824 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#error(HttpServletRequest)
2023-01-23T16:48:51.388 DEBUG 10824 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Using 'application/json', given [application/json] and supported [application/json, application/*+json]
2023-01-23T16:48:51.389 DEBUG 10824 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor : Writing [{timestamp=Mon Jan 23 16:48:51 EST 2023, status=401, error=Unauthorized, message=You must supply an (truncated)...]
2023-01-23T16:48:51.399 DEBUG 10824 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Exiting from "ERROR" dispatch, status 401
Is there something different that needs to be done with the matchers?

Create two separate SecurityFilterChain beans: one for REST configuration and one for the default configuration. Use http.securityMatcher(...) before authorizeHttpRequests() so that the REST filter chain only handles requests to API endpoints. In addition, ensure that the /error path is publicly accessible as it handles returning the JSON for errors.
#Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http.oauth2Login(Customizer.withDefaults()).logout().logoutUrl("/logout")
.addLogoutHandler(keycloakLogoutHandler)
.logoutRequestMatcher(new AntPathRequestMatcher("/logout", HttpMethod.GET.name()))
.logoutSuccessUrl("/");
http.authorizeHttpRequests().requestMatchers("/error").permitAll().anyRequest().authenticated();
return http.build();
}
#Bean
#Order(1)
public SecurityFilterChain restSecurityFilterChain(HttpSecurity http) throws Exception {
http.securityMatcher("/api/**", "/actuator/*").authorizeHttpRequests().requestMatchers("/api/**").permitAll().requestMatchers("/actuator/*")
.hasAuthority("ADMIN").and().csrf().ignoringRequestMatchers("/api/**");
return http.build();
}

In my case, I was having every endpoint be authenticated except "/api/**". The problem turned out that when there is an error, the call is forwarded to "/error" even though it is only going to return JSON.
My solution was to change
.requestMatchers("/api/**").permitAll()
to
.requestMatchers("/api/**", "/error").permitAll()
Now the REST API is accessible and returns correct JSON errors, while the rest of the application is still authenticated. It seems strange to have to have the error page outside of auth, but it does work.

SpringBoot does not find views

I'm trying to write a simple SpringBoot Web Application to get started with the framework.
This is my structure:
src
`-main
`-java
`-resources
`-static
`-templates
`-webapp
`-WEB-INF
`-jsp
`-login.jsp
I have a Controller like
#Controller
public class LoginController {
#RequestMapping("/login")
public String loginMessage(){
return "login";
}
}
I've configurated the path where views has to be looked for in the application.properties like:
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
logging.level.org.springframework.web=DEBUG
I've also included the next dependency in pom.xml:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
But when I go to http://localhost:8080/login I'm still having a 404 error.
What am I missing?
EDIT:
Here is the log from the IntelliJ Idea console. It seems like it finds the login.jsp, but for some reason return an error page.
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/login]
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /login
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String com.albertocastano.apringboot.web.springbootfirstwebapplication.controller.LoginController.loginMessage()]
2018-07-06 11:17:20.488 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/login] is: -1
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8] based on Accept header types and producible media types [*/*])
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.servlet.view.BeanNameViewResolver : No matching bean found for view name 'login'
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.web.servlet.view.InternalResourceView: name 'login'; URL [/WEB-INF/jsp/login.jsp]] based on requested media type 'text/html'
2018-07-06 11:17:20.489 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.web.servlet.view.InternalResourceView: name 'login'; URL [/WEB-INF/jsp/login.jsp]] in DispatcherServlet with name 'dispatcherServlet'
2018-07-06 11:17:20.492 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.servlet.view.InternalResourceView : Forwarding to resource [/WEB-INF/jsp/login.jsp] in InternalResourceView 'login'
2018-07-06 11:17:20.492 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/WEB-INF/jsp/login.jsp]
2018-07-06 11:17:20.492 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /WEB-INF/jsp/login.jsp
2018-07-06 11:17:20.493 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/WEB-INF/jsp/login.jsp]
2018-07-06 11:17:20.495 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Matching patterns for request [/WEB-INF/jsp/login.jsp] are [/**]
2018-07-06 11:17:20.496 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : URI Template variables for request [/WEB-INF/jsp/login.jsp] are {}
2018-07-06 11:17:20.497 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapping [/WEB-INF/jsp/login.jsp] to HandlerExecutionChain with handler [ResourceHttpRequestHandler [locations=[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver#3f0408]]] and 1 interceptor
2018-07-06 11:17:20.498 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/WEB-INF/jsp/login.jsp] is: -1
2018-07-06 11:17:20.499 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2018-07-06 11:17:20.499 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-07-06 11:17:20.500 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-07-06 11:17:20.501 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/error]
2018-07-06 11:17:20.502 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2018-07-06 11:17:20.502 DEBUG 53340 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)]
2018-07-06 11:17:20.502 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/error] is: -1
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, text/html;q=0.8] based on Accept header types and producible media types [text/html])
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView#bd7588] based on requested media type 'text/html'
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView#bd7588] in DispatcherServlet with name 'dispatcherServlet'
2018-07-06 11:17:20.522 DEBUG 53340 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request

You're missing dependancy in your pom.xml file.
Add jstl :
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
And remove the scope provided of tomcat-embed-jasper, because it's not provided by default by any spring-boot-starter.

SpringBoot Web MVC Application Cannot resolve view

I have been using Spring Boot ReST APIs for quite some time; I thought of experimenting with web-MVC. However, I have got stuck on the first part itself.
I have uploaded the project on GitHub
What I have done so far:
Defined POM.xml with spring-boot-starter-web + tomcat-embed-jasper mainly.
Defined a #Controller with #GetMapping("/greeting"), which returns the name of a view - hello
Defined following properties:
spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp
Created a very basic view hello.jsp at src/main/web/WEB-INF/views/hello.jsp
Created a main Application to run as SpringBootApplication.
Error:
Whitelabel Error Page
This application has no explicit mapping for
/error, so you are seeing this as a fallback.
Mon Mar 26 22:55:03 IST 2018
There was an unexpected error (type=Not Found, status=404). No message available
Logs:
2018-03-26 22:55:02.998 DEBUG 7132 --- [nio-8080-exec-1] o.a.coyote.http11.Http11InputBuffer : Received [GET /greeting HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
DNT: 1
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9,hi;q=0.8
]
2018-03-26 22:55:03.043 DEBUG 7132 --- [nio-8080-exec-1] org.apache.tomcat.util.http.Parameters : Set query string encoding to UTF-8
2018-03-26 22:55:03.054 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.authenticator.AuthenticatorBase : Security checking request GET /greeting
2018-03-26 22:55:03.054 DEBUG 7132 --- [nio-8080-exec-1] org.apache.catalina.realm.RealmBase : No applicable constraints defined
2018-03-26 22:55:03.063 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.a.jaspic.AuthConfigFactoryImpl : Loading persistent provider registrations from [C:\Users\NirMit\AppData\Local\Temp\tomcat.3836668232954126555.8080\conf\jaspic-providers.xml]
2018-03-26 22:55:03.064 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.authenticator.AuthenticatorBase : Not subject to any constraint
2018-03-26 22:55:03.067 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing servlet 'dispatcherServlet'
2018-03-26 22:55:03.068 INFO 7132 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-03-26 22:55:03.069 INFO 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2018-03-26 22:55:03.069 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'multipartResolver'
2018-03-26 22:55:03.069 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Using MultipartResolver [org.springframework.web.multipart.support.StandardServletMultipartResolver#a8d0be]
2018-03-26 22:55:03.070 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Creating instance of bean 'org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver'
2018-03-26 22:55:03.074 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.074 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.077 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolverCustomizer)
2018-03-26 22:55:03.079 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.082 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.LocaleResolverCustomizer)
2018-03-26 22:55:03.084 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.084 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Finished creating instance of bean 'org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver'
2018-03-26 22:55:03.085 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Unable to locate LocaleResolver with name 'localeResolver': using default [org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver#1c2a3a2]
2018-03-26 22:55:03.086 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Creating instance of bean 'org.springframework.web.servlet.theme.FixedThemeResolver'
2018-03-26 22:55:03.091 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.091 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.093 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.theme.AbstractThemeResolverCustomizer)
2018-03-26 22:55:03.095 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.097 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.theme.FixedThemeResolverCustomizer)
2018-03-26 22:55:03.098 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.101 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.ThemeResolverCustomizer)
2018-03-26 22:55:03.108 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.109 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Finished creating instance of bean 'org.springframework.web.servlet.theme.FixedThemeResolver'
2018-03-26 22:55:03.115 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Unable to locate ThemeResolver with name 'themeResolver': using default [org.springframework.web.servlet.theme.FixedThemeResolver#1855c21]
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'requestMappingHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'viewControllerHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'beanNameHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'resourceHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'defaultServletHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'faviconHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'welcomePageHandlerMapping'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'requestMappingHandlerAdapter'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'httpRequestHandlerAdapter'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'simpleControllerHandlerAdapter'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'errorAttributes'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'handlerExceptionResolver'
2018-03-26 22:55:03.121 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Creating instance of bean 'org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator'
2018-03-26 22:55:03.124 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.124 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.126 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.view.DefaultRequestToViewNameTranslatorCustomizer)
2018-03-26 22:55:03.128 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.130 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.RequestToViewNameTranslatorCustomizer)
2018-03-26 22:55:03.132 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.133 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Finished creating instance of bean 'org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator'
2018-03-26 22:55:03.133 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Unable to locate RequestToViewNameTranslator with name 'viewNameTranslator': using default [org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator#99d4c6]
2018-03-26 22:55:03.133 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'beanNameViewResolver'
2018-03-26 22:55:03.134 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'mvcViewResolver'
2018-03-26 22:55:03.134 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'defaultViewResolver'
2018-03-26 22:55:03.134 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'viewResolver'
2018-03-26 22:55:03.137 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Creating instance of bean 'org.springframework.web.servlet.support.SessionFlashMapManager'
2018-03-26 22:55:03.141 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.142 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.143 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.support.AbstractFlashMapManagerCustomizer)
2018-03-26 22:55:03.146 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.153 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.support.SessionFlashMapManagerCustomizer)
2018-03-26 22:55:03.156 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.158 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : findClass(org.springframework.web.servlet.FlashMapManagerCustomizer)
2018-03-26 22:55:03.160 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase : --> Returning ClassNotFoundException
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Finished creating instance of bean 'org.springframework.web.servlet.support.SessionFlashMapManager'
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Unable to locate FlashMapManager with name 'flashMapManager': using default [org.springframework.web.servlet.support.SessionFlashMapManager#3d023d]
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Published WebApplicationContext of servlet 'dispatcherServlet' as ServletContext attribute with name [org.springframework.web.servlet.FrameworkServlet.CONTEXT.dispatcherServlet]
2018-03-26 22:55:03.161 INFO 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 92 ms
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Servlet 'dispatcherServlet' configured successfully
2018-03-26 22:55:03.177 DEBUG 7132 --- [169.254.165.176] sun.rmi.transport.tcp : RMI TCP Connection(3)-169.254.165.176: (port 51150) connection closed
2018-03-26 22:55:03.177 DEBUG 7132 --- [169.254.165.176] sun.rmi.transport.tcp : RMI TCP Connection(3)-169.254.165.176: close connection
2018-03-26 22:55:03.200 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.w.s.f.OrderedRequestContextFilter : Bound request context to thread: org.apache.catalina.connector.RequestFacade#1cc2c8
2018-03-26 22:55:03.211 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/greeting]
2018-03-26 22:55:03.217 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /greeting
2018-03-26 22:55:03.223 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String com.khandhedia.sprinboot.mvc.demo1.controller.GreetingController.greetingForm(org.springframework.ui.Model)]
2018-03-26 22:55:03.223 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'greetingController'
2018-03-26 22:55:03.224 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/greeting] is: -1
2018-03-26 22:55:03.285 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8] based on Accept header types and producible media types [*/*])
2018-03-26 22:55:03.285 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.servlet.view.BeanNameViewResolver : No matching bean found for view name 'hello'
2018-03-26 22:55:03.293 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Invoking afterPropertiesSet() on bean with name 'hello'
2018-03-26 22:55:03.295 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.web.servlet.view.JstlView: name 'hello'; URL [/WEB-INF/views/hello.jsp]] based on requested media type 'text/html'
2018-03-26 22:55:03.295 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.web.servlet.view.JstlView: name 'hello'; URL [/WEB-INF/views/hello.jsp]] in DispatcherServlet with name 'dispatcherServlet'
2018-03-26 22:55:03.296 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.view.JstlView : Added model object 'name' of type [java.lang.String] to request in view with name 'hello'
2018-03-26 22:55:03.307 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.view.JstlView : Forwarding to resource [/WEB-INF/views/hello.jsp] in InternalResourceView 'hello'
2018-03-26 22:55:03.318 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/WEB-INF/views/hello.jsp]
2018-03-26 22:55:03.318 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /WEB-INF/views/hello.jsp
2018-03-26 22:55:03.340 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/WEB-INF/views/hello.jsp]
2018-03-26 22:55:03.340 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Matching patterns for request [/WEB-INF/views/hello.jsp] are [/**]
2018-03-26 22:55:03.342 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : URI Template variables for request [/WEB-INF/views/hello.jsp] are {}
2018-03-26 22:55:03.343 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapping [/WEB-INF/views/hello.jsp] to HandlerExecutionChain with handler [ResourceHttpRequestHandler [locations=[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver#1113a37]]] and 1 interceptor
2018-03-26 22:55:03.344 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/WEB-INF/views/hello.jsp] is: -1
2018-03-26 22:55:03.344 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2018-03-26 22:55:03.344 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-03-26 22:55:03.347 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Disabling the response for further output
2018-03-26 22:55:03.347 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-03-26 22:55:03.347 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.w.s.f.OrderedRequestContextFilter : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade#1cc2c8
2018-03-26 22:55:03.348 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost] : Processing ErrorPage[errorCode=0, location=/error]
2018-03-26 22:55:03.349 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/error]
2018-03-26 22:55:03.350 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2018-03-26 22:55:03.351 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)]
2018-03-26 22:55:03.351 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'basicErrorController'
2018-03-26 22:55:03.352 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/error] is: -1
2018-03-26 22:55:03.354 DEBUG 7132 --- [nio-8080-exec-1] o.s.c.e.PropertySourcesPropertyResolver : Could not find key 'spring.template.provider.cache' in any property source
2018-03-26 22:55:03.358 DEBUG 7132 --- [nio-8080-exec-1] o.s.c.e.PropertySourcesPropertyResolver : Could not find key 'spring.template.provider.cache' in any property source
2018-03-26 22:55:03.383 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, text/html;q=0.8] based on Accept header types and producible media types [text/html])
2018-03-26 22:55:03.383 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'error'
2018-03-26 22:55:03.383 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory : Invoking afterPropertiesSet() on bean with name 'error'
2018-03-26 22:55:03.383 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView#1943f03] based on requested media type 'text/html'
2018-03-26 22:55:03.383 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView#1943f03] in DispatcherServlet with name 'dispatcherServlet'
2018-03-26 22:55:03.420 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Successfully completed request
2018-03-26 22:55:03.420 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Disabling the response for further output
2018-03-26 22:55:03.439 DEBUG 7132 --- [nio-8080-exec-1] o.a.tomcat.util.net.SocketWrapperBase : Socket: [org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper#10910ae:org.apache.tomcat.util.net.NioChannel#4cbd6d:java.nio.channels.SocketChannel[connected local=/0:0:0:0:0:0:0:1:8080 remote=/0:0:0:0:0:0:0:1:51167]], Read from buffer: [0]
2018-03-26 22:55:03.440 DEBUG 7132 --- [nio-8080-exec-1] o.apache.coyote.http11.Http11Processor : Socket: [org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper#10910ae:org.apache.tomcat.util.net.NioChannel#4cbd6d:java.nio.channels.SocketChannel[connected local=/0:0:0:0:0:0:0:1:8080 remote=/0:0:0:0:0:0:0:1:51167]], Status in: [OPEN_READ], State out: [OPEN]
2018-03-26 22:55:09.322 DEBUG 7132 --- [nio-8080-exec-5] o.a.tomcat.util.net.SocketWrapperBase : Socket: [org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper#10910ae:org.apache.tomcat.util.net.NioChannel#4cbd6d:java.nio.channels.SocketChannel[connected local=/0:0:0:0:0:0:0:1:8080 remote=/0:0:0:0:0:0:0:1:51167]], Read from buffer: [0]
2018-03-26 22:55:09.322 DEBUG 7132 --- [nio-8080-exec-5] o.apache.coyote.http11.Http11Processor : Error parsing HTTP request header
EDIT:
I tried following changes as per the comments; however, it doesn't seem to help yet.
Putting hello.jsp in src/main/resources/templates/WEB-INF/views
Putting hello.jsp in src/main/resources/static/WEB-INF/views
Putting hello.jsp in src/main/resources/WEB-INF/views
Putting hello.jsp in src/main/webapp/WEB-INF/views
Please advise.

The issue was with the provided scope of Maven Dependency tomcat-embed-jasper which is used to compile the JSPs.
With default scope for this maven dependency, it flies!
<!-- Tomcat for JSP rendering -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
Two cents from my analysis!
What is the use of this dependency when we already have spring-boot-starter-web?
The spring-boot-starter-web includes the spring-boot-starter-tomcat and the spring-boot-starter-tomcat includes the tomcat-embed-core.
But, tomcat-embed-core doesn't include tomcat-embed-jasper.
Now, according to maven docs, if the tomcat-embed-jasper is marked as provided, it means that it expects the JDK or a container to provide the dependency at runtime.
This scope is only available on the compilation and test classpath, and is not transitive.
Hence, effectively this dependency is not available when JSPs are being compiled.
By marking this dependency scope as compile, it is made available in all the classpaths and to all the dependent projects as well.
Summary: The spring-boot-starter-web has tomcat embedded dependency but it doesn't include the jasper embedded dependency. One needs to add this dependency with default compile scope.
Where to place the JSPs/View Components in a Spring Boot Project?
Create a Web Project using Spring Inializr or IntelliJ Spring Plugins.
Add Web framework support using IDE. It may create a directory as src/main/web/WEB-INF
Rename the directory from web to webapp
Create the view components like JSPs at src/main/webapp/WEB-INF/views/
Define following properties in application.properties
spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp

src/main/web/WEB-INF/views/hello.jsp
will not be found by Spring Boot. As a Spring Boot convention you should put your views under resources folder:
src/main/resources/templates/...
And for your CSS:
src/main/resources/static/...
And if you are using Spring Boot, then it's a good idea to use the project initializer:
https://start.spring.io/
from there choose what view technology you want, and Spring Boot will add its dependencies for you, so you don't need to add them or configure them yourself(step 3).

Resolving exception from handler and Request method 'PUT' not supported

I just can not. For 4 days I have been struggling to send data ajax using a different method than GET and I can not advise. I create a project in Spring Boot. I have created a mapped address controller
#PutMapping(value = "/changeEmail", consumes = MediaType.APPLICATION_JSON_VALUE)
public boolean changeEmail(
#RequestBody ChangeEmailDTO changeEmailDTO
) {
System.out.println("email: " + changeEmailDTO.getEmail());
return true;
}
This controller is supposed to accept the email address sent by ajaxa
function changeEmail() {
console.log("Event");
$.ajax({
type: 'PUT',
url: '/changeEmail',
data: {
email: JSON.strgify($('#email').val())
},
success: function (result) {
console.log('function');
}
});
}
However, the only effect is that in the console crashes me
PUT http://localhost:8080/signIn net::ERR_TOO_MANY_REDIRECTS
send # jquery-3.2.1.min.js:4
ajax # jquery-3.2.1.min.js:4
changeEmail # settings.js:58
submitHandler # settings.js:52
d # jquery.validate.min.js:4
(anonymous) # jquery.validate.min.js:4
dispatch # jquery-3.2.1.min.js:3
q.handle # jquery-3.2.1.min.js:3
The DTO has only one field
public class ChangeEmailDTO {
#IsValidEmail
#ExistsEmail(ifExistsReturn = false)
#Getter #Setter private String email;
}
After trying to send data via ajax, it sends me to the error controller
#Controller
public class PageNotFoundController implements ErrorController{
#RequestMapping("/error")
public ModelAndView showPageError() {
return new ModelAndView("redirect:/signIn");
}
#Override
public String getErrorPath() {
return "/error";
}
}
Screen with browser tool what to send and receive: https://zapodaj.net/f1b8ed0b2a16b.png.html
As I mentioned, the controller can correctly pick up a GET query from ajax only. Every time it flips on the error controller.
Additionally, they say that if I wanted to send data directly from the form, then there is no problem with any query.
What this ajax divert, I do not know.
In addition, when the csrf() is disabled in Spring Security receives such logs
2017-07-26 21:07:15.465 DEBUG 3760 --- [nio-8080-exec-6] o.s.web.servlet.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2017-07-26 21:07:15.465 DEBUG 3760 --- [nio-8080-exec-6] o.s.web.servlet.DispatcherServlet : Successfully completed request
2017-07-26 21:07:15.499 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing PUT request for [/changeEmail]
2017-07-26 21:07:15.501 DEBUG 3760 --- [nio-8080-exec-7] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /changeEmail
2017-07-26 21:07:15.505 DEBUG 3760 --- [nio-8080-exec-7] .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
2017-07-26 21:07:15.506 DEBUG 3760 --- [nio-8080-exec-7] .w.s.m.a.ResponseStatusExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
2017-07-26 21:07:15.506 DEBUG 3760 --- [nio-8080-exec-7] .w.s.m.s.DefaultHandlerExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
2017-07-26 21:07:15.508 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.servlet.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2017-07-26 21:07:15.508 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.servlet.DispatcherServlet : Successfully completed request
2017-07-26 21:07:15.509 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing PUT request for [/error]
2017-07-26 21:07:15.510 DEBUG 3760 --- [nio-8080-exec-7] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2017-07-26 21:07:15.511 DEBUG 3760 --- [nio-8080-exec-7] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView com.movie.database.app.controller.error.PageNotFoundController.showPageError()]
2017-07-26 21:07:15.526 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.cors.DefaultCorsProcessor : Skip CORS processing: request is from same origin
here
2017-07-26 21:07:15.527 DEBUG 3760 --- [nio-8080-exec-7] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [*/*] based on Accept header types and producible media types [*/*])
2017-07-26 21:07:15.528 DEBUG 3760 --- [nio-8080-exec-7] o.s.w.servlet.view.BeanNameViewResolver : No matching bean found for view name 'redirect:/signIn'
2017-07-26 21:07:15.528 DEBUG 3760 --- [nio-8080-exec-7] o.s.w.s.v.ContentNegotiatingViewResolver : Returning redirect view [org.springframework.web.servlet.view.RedirectView: unnamed; URL [/signIn]]
2017-07-26 21:07:15.528 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.web.servlet.view.RedirectView: unnamed; URL [/signIn]] in DispatcherServlet with name 'dispatcherServlet'
2017-07-26 21:07:15.530 DEBUG 3760 --- [nio-8080-exec-7] o.s.web.servlet.DispatcherServlet : Successfully completed request
2017-07-26 21:07:15.534 DEBUG 3760 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing PUT request for [/signIn]
2017-07-26 21:07:15.535 DEBUG 3760 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /signIn
2017-07-26 21:07:15.536 DEBUG 3760 --- [nio-8080-exec-9] .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'PUT' not supported
2017-07-26 21:07:15.536 DEBUG 3760 --- [nio-8080-exec-9] .w.s.m.a.ResponseStatusExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'PUT' not supported
2017-07-26 21:07:15.536 DEBUG 3760 --- [nio-8080-exec-9] .w.s.m.s.DefaultHandlerExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'PUT' not supported
2017-07-26 21:07:15.536 WARN 3760 --- [nio-8080-exec-9] o.s.web.servlet.PageNotFound : Request method 'PUT' not supported
2017-07-26 21:07:15.536 DEBUG 3760 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2017-07-26 21:07:15.536 DEBUG 3760 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet : Successfully completed request
2017-07-26 21:07:15.537 DEBUG 3760 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing PUT request for [/error]
2017-07-26 21:07:15.538 DEBUG 3760 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2017-07-26 21:07:15.539 DEBUG 3760 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView com.movie.database.app.controller.error.PageNotFoundController.showPageError()]
2017-07-26 21:07:15.539 DEBUG 3760 --- [nio-8080-exec-9] o.s.web.cors.DefaultCorsProcessor : Skip CORS processing: request is from same origin
The most important mistakes are
2017-07-26 21:07:15.506 DEBUG 3760 --- [nio-8080-exec-7] .w.s.m.s.DefaultHandlerExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
2017-07-26 21:07:15.536 DEBUG 3760 --- [nio-8080-exec-9] .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [null]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'PUT' not supported
2017-07-26 21:07:15.536 WARN 3760 --- [nio-8080-exec-9] o.s.web.servlet.PageNotFound : Request method 'PUT' not supported

Your error message tells you your issue: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
Add contentType: 'application/json; charset=utf-8', to your ajax call. You'll also want to call JSON.stringify on the entire JSON string. Check out the w3schools page on stringify for a good example, also copied/pasted below.
var obj = { "name":"John", "age":30, "city":"New York"};
var myJSON = JSON.stringify(obj);

Spring boot application actuator end points get registered and requests still fail

I have a Spring boot app with the following startup code. The Actuator end points get mapped and the beans get removed. I see the actuator end points registered and then the beans removed. Going by the SO thread, the messages are harmless. But when I try to reach any actuator end point, I am getting error. I am not sure what I should further look into to get actuators working. I am attaching all the log snippets that I was referring.
I have the project setup with maven:
Maven Spring Actuator section
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
Java startup code
#EnableAutoConfiguration(exclude = { MetricFilterAutoConfiguration.class, MetricRepositoryAutoConfiguration.class, MessageSourceAutoConfiguration.class })
#EnableConfigurationProperties({ MyAppProperties.class })
#SpringBootApplication
public class MyApp{
private static final Logger LOG = LoggerFactory.getLogger(MyApp.class);
public static void main(String[] args) throws UnknownHostException {
SpringApplication app = new SpringApplication(MyApp.class);
Environment env = app.run(args).getEnvironment();
LOG.info("\n----------------------------------------------------------\n\t" +
"Application '{}' is running! Access URLs:\n\t" +
"Local: \t\thttp://localhost:{}\n\t" +
"External: \thttp://{}:{}\n----------------------------------------------------------",
env.getProperty("spring.application.name"),
env.getProperty("server.port"),
InetAddress.getLocalHost().getHostAddress(),
env.getProperty("server.port"));
}
}
The actuator starts the endpoints as per the log in DEBUG mode:
2017-03-17 11:19:29.378 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/info || /info.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.379 DEBUG 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : 1 request handler methods found on class org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint: {public void org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint.invoke(boolean,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException={[],methods=[GET],produces=[application/octet-stream]}}
2017-03-17 11:19:29.379 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/heapdump || /heapdump.json],methods=[GET],produces=[application/octet-stream]}" onto public void org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint.invoke(boolean,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException
2017-03-17 11:19:29.380 DEBUG 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : 1 request handler methods found on class org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter: {public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()={[],methods=[GET],produces=[application/json]}}
2017-03-17 11:19:29.380 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/trace || /trace.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.384 DEBUG 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : 2 request handler methods found on class org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint: {public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)={[/{name:.*}],methods=[GET],produces=[application/json]}, public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()={[],methods=[GET],produces=[application/json]}}
2017-03-17 11:19:29.384 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/metrics/{name:.*}],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)
2017-03-17 11:19:29.384 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/metrics || /metrics.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.384 DEBUG 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : 1 request handler methods found on class org.springframework.cloud.context.restart.RestartMvcEndpoint: {public java.lang.Object org.springframework.cloud.context.restart.RestartMvcEndpoint.invoke()={[],methods=[POST]}}
2017-03-17 11:19:29.384 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/restart || /restart.json],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.context.restart.RestartMvcEndpoint.invoke()
2017-03-17 11:19:29.386 INFO 17855 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/beans || /beans.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.386 DEBUG 17855 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Finished creating instance of bean 'endpointHandlerMapping'
2017-03-17 11:19:29.386 DEBUG 17855 --- [ main] f.a.AutowiredAnnotationBeanPostProcessor : Autowiring by type from bean name 'org.springframework.boot.actuate.autoconfigure.EndpointWebMvcChildContextConfiguration$EndpointHandlerMappingConfiguration' to bean named 'mvcEndpoints'
Eventually I see in the logs that the beans are removed:
2017-03-17 11:19:29.415 DEBUG 17855 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Rejected bean name 'endpointHandlerMapping': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Rejected bean name 'mvcEndpoints': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Rejected bean name 'environmentMvcEndpoint': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Rejected bean name 'heapdumpMvcEndpoint': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Rejected bean name 'healthMvcEndpoint': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Rejected bean name 'metricsMvcEndpoint': no URL paths identified
When I make a request to /info or /health to reach the info and health, I am directed to the whitelabel error page because there are no handlers found.
After debugging the dispatcher servlet I see that there are 7 handlers and I expected to find a mapping for the /info in BeanNameUrlHandlerMapping.
org.springframework.web.servlet.handler.SimpleUrlHandlerMapping
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping
org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping
org.springframework.web.servlet.handler.SimpleUrlHandlerMapping
org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport$EmptyHandlerMapping
org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport$EmptyHandlerMapping
org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WelcomePageHandlerMapping
Since the very first Mapping in the list is SimpleUrlHandlerMapping, it immediately returns "no handler mapping" which takes me to error page. I tried checking if the order matters and peeked into the BeanNameUrlHandlerMapping to see if it returns a handler mapping and it did not return any. So I suspect the debug message which removed the beans earlier is a culprit that caused the issue.
Can someone advise if there is anything I need to look into particularly.

According to the getting started guide : Building a RESTful Web Service with Spring Boot Actuator you should use the spring-boot-starter-actuator starter :
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
instead of the spring-boot-actuator dependency.
Note also that according to the Spring Boot reference :
Information returned by HealthIndicators is often somewhat sensitive in nature. For example, you probably don’t want to publish details of your database server to the world. For this reason, by default, only the health status is exposed over an unauthenticated HTTP connection. If you are happy for complete health information to always be exposed you can set endpoints.health.sensitive to false.

management.security.enabled=false
management.endpoints.web.exposure.include=*
I had the similar issue and setting the above properties resolved it.
Update: I had this problem for version 1.5.9 . With the latest version 2.0.2, it works without these properties. In fact "management.security.enabled" has been deprecated in 2.0.2.