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Spring boot - multiple datasource failed to configure datasource url

My spring boot project has two datasource configurations for the databases Akademiks & Options, but if I run the code, I would get the exception Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. However, when I removed the configuration for the options database from the application.properties, it worked well
application.properties:
spring.datasource.akademiks.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.akademiks.url=jdbc:mysql://localhost:3306/akademiks?useSSL=false&useUnicode=yes&characterEncoding=UTF-8&allowPublicKeyRetrieval=true&serverTimezone=UTC
spring.datasource.akademiks.username=root
spring.datasource.akademiks.password=root
spring.datasource.options.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.options.url=jdbc:mysql://localhost:3306/akademiksoptions?useSSL=false&useUnicode=yes&characterEncoding=UTF-8&allowPublicKeyRetrieval=true&serverTimezone=UTC
spring.datasource.options.username=root
spring.datasource.options.password=root
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
spring.jpa.database = mysql
AkademiksDbConfig.java:
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(basePackages = "com.example.resource.akademiks.dao",
entityManagerFactoryRef = "akademiksEntityManagerFactory",
transactionManagerRef = "akademiksTransactionManager")
public class AkademiksDbConfig {
#Bean
#Primary
#ConfigurationProperties("spring.datasource.akademiks")
public DataSourceProperties akademiksDataSourceProperties() {
return new DataSourceProperties();
}
#Primary
#Bean
#ConfigurationProperties("spring.datasource.akademiks.configuration")
public DataSource akademiksDataSource() {
return akademiksDataSourceProperties().initializeDataSourceBuilder()
.type(HikariDataSource.class).build();
}
#Primary
#Bean(name = "akademiksEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean
akademiksEntityManagerFactory(EntityManagerFactoryBuilder builder) {
return builder
.dataSource(akademiksDataSource())
.packages(Mathematics.class)
.packages(Chemistry.class)
.packages(Physics.class)
.build();
}
#Primary
#Bean
public PlatformTransactionManager akademiksTransactionManager(
#Qualifier("akademiksEntityManagerFactory")
LocalContainerEntityManagerFactoryBean akademiksEntityManagerFactory
) {
return new JpaTransactionManager(akademiksEntityManagerFactory.getObject());
}
}
OptionsDbConfig.java:
#Configuration
#EnableJpaRepositories(basePackages = "com.example.resource.akademiks.options.dao",
entityManagerFactoryRef = "optionsEntityManagerFactory",
transactionManagerRef = "optionsTransactionManager")
public class OptionsDbConfig {
#Bean
#ConfigurationProperties("spring.datasource.options.configuration")
public DataSourceProperties optionsDataSourceProperties() {
return new DataSourceProperties();
}
#Bean
#ConfigurationProperties("spring.datasource.options.configuration")
public DataSource optionsDataSource() {
return optionsDataSourceProperties().initializeDataSourceBuilder()
.type(BasicDataSource.class).build();
}
#Bean(name = "optionsEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean
optionsEntityManagerFactory(EntityManagerFactoryBuilder builder) {
return builder
.dataSource(optionsDataSource())
.packages(MathsOptions.class)
.packages(ChemistryOptions.class)
.packages(PhysicsOptions.class)
.build();
}
#Bean
public PlatformTransactionManager optionsTransactionManager(
final #Qualifier("optionsEntityManagerFactory")
LocalContainerEntityManagerFactoryBean optionsEntityManagerFactory
) {
return new JpaTransactionManager(optionsEntityManagerFactory.getObject());
}
}
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.resource</groupId>
<artifactId>akademiks</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>akademiks</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

After switching to SpringBoot from TomcatServerConf Request method 'POST' not supported

Initially, I started the project with IntelliJ Idea Tomcat Local Server configuration (everything worked), but decided to use Spring Boot Application. I added the main class, changed pom.xml (delete spring-context and add spring-boot-starter-parent, spring-boot, spring-boot-starter-tomcat, spring-boot-starter-web, spring-boot-autoconfigure), after that application runs , GET-Method works, but POST - not supported. Help me please!!! Thank you!
Main.class
#SpringBootApplication(scanBasePackageClasses = {SpringConfig.class})
public class Main extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Main.class, args);
}
}
Pom.xml to springBoot
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.3</version>
<relativePath/>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot</artifactId>
<version>2.4.3</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.4.3</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>2.4.3</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring5</artifactId>
<version>3.0.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
Main configuration class
#Configuration
#ComponentScan("ru")
#PropertySource("classpath:application.properties")
#EnableWebMvc
public class SpringConfig implements WebMvcConfigurer {
private final ApplicationContext applicationContext;
#Autowired
public SpringConfig(ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
/*
* Dispatcher configuration for serving static resources
*/
#Override
public void addResourceHandlers(final ResourceHandlerRegistry registry) {
WebMvcConfigurer.super.addResourceHandlers(registry);
registry.addResourceHandler("/images/**").addResourceLocations("/images/");
registry.addResourceHandler("/webjars/bootstrap/4.6.0/css/**").addResourceLocations("/webjars/bootstrap/4.6.0/css/bootstrap.min.css");
registry.addResourceHandler("assets/select2-develop/**").addResourceLocations("/assets/");
registry.addResourceHandler("/css/**").addResourceLocations("/css/");
registry.addResourceHandler("/js/**").addResourceLocations("/js/");
}
/*
* Message externalization/internationalization
*/
#Bean
public ResourceBundleMessageSource messageSource() {
ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
messageSource.setBasename("Messages");
return messageSource;
}
#Bean
public SpringResourceTemplateResolver templateResolver(){
// SpringResourceTemplateResolver automatically integrates with Spring's own
// resource resolution infrastructure, which is highly recommended.
SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
templateResolver.setApplicationContext(this.applicationContext);
templateResolver.setPrefix("/WEB-INF/views/");
templateResolver.setSuffix(".html");
templateResolver.setCharacterEncoding("UTF-8");
// HTML is the default value, added here for the sake of clarity.
templateResolver.setTemplateMode(TemplateMode.HTML);
// Template cache is true by default. Set to false if you want
// templates to be automatically updated when modified.
templateResolver.setCacheable(true);
return templateResolver;
}
#Bean
public SpringTemplateEngine templateEngine(){
// SpringTemplateEngine automatically applies SpringStandardDialect and
// enables Spring's own MessageSource message resolution mechanisms.
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(templateResolver());
// Enabling the SpringEL compiler with Spring 4.2.4 or newer can
// speed up execution in most scenarios, but might be incompatible
// with specific cases when expressions in one template are reused
// across different data types, so this flag is "false" by default
// for safer backwards compatibility.
templateEngine.setEnableSpringELCompiler(true);
return templateEngine;
}
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
ThymeleafViewResolver resolver = new ThymeleafViewResolver();
resolver.setTemplateEngine(templateEngine());
resolver.setCharacterEncoding("UTF-8");
registry.viewResolver(resolver);
}
#Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.postgresql.Driver");
dataSource.setUrl("jdbc:postgresql://localhost:5432/postgres");
dataSource.setUsername("over");
// dataSource.setPassword("postgres"); Можно установить пароль для базы данных.
return dataSource;
}
#Bean
public JdbcTemplate jdbcTemplate() {
return new JdbcTemplate(dataSource());
}
}
DispatcherSerlvet config
public class MySpringMvcDispatcherSerlvetIntitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return null;
}
/* Класс знает теперь где находится spring конфигурация */
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class[]{SpringConfig.class};
}
/* Все http запросы от пользователя посылаем на dispatcher servlet */
#Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
#Override
public void onStartup(ServletContext aServletContext) throws ServletException {
super.onStartup(aServletContext);
registerCharacterEncodingFilter(aServletContext);
registerHiddenFieldFilter(aServletContext);
}
private void registerHiddenFieldFilter(ServletContext aContext) {
aContext.addFilter("hiddenHttpMethodFilter",
new HiddenHttpMethodFilter()).addMappingForUrlPatterns(null ,true, "/*");
}
private void registerCharacterEncodingFilter(ServletContext aContext) {
EnumSet<DispatcherType> dispatcherTypes = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD);
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
characterEncodingFilter.setForceEncoding(true);
FilterRegistration.Dynamic characterEncoding = aContext.addFilter("characterEncoding", characterEncodingFilter);
characterEncoding.addMappingForUrlPatterns(dispatcherTypes, true, "/*");
}
}
This is my exeption :
org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver.logException - Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported]
Controller
#RequestMapping("/categories")
#Controller
public class CategoriesController {
private CategoriesDao categoriesDAO;
#Autowired
public void setCategoriesDAO(CategoriesDao categoriesDAO)
{
this.categoriesDAO = categoriesDAO;
}
#GetMapping
public String index(Model model) {
model.addAttribute("category", new Category());
model.addAttribute("categories", categoriesDAO.index());
return "categories/index";
}
#PostMapping
public String addCategory(#ModelAttribute("category") #Valid Category category,
BindingResult bindingResult, Model model) {
if(bindingResult.hasErrors()) {
model.addAttribute("categories", categoriesDAO.index());
return "categories/index";
}
categoriesDAO.addCategory(category);
return "redirect:categories";
}
#DeleteMapping("/{id}")
public String deleteCategory(#PathVariable("id") int id) {
categoriesDAO.deleteCategory(id);
return "redirect:/categories";
}
#GetMapping("/{id}/edit")
public String editCategory(Model model, #PathVariable("id") int id) {
model.addAttribute("editCategory", categoriesDAO.editCategory(id));
return "categories/edit";
}
#PatchMapping("/{id}")
public String updateCategory(#ModelAttribute("editCategory") Category updateCategory,
#PathVariable("id") int id) {
categoriesDAO.updateCategory(id, updateCategory);
return "redirect:{id}/edit";
}
}

To implement the configure method in the main class you could do:
#SpringBootApplication
public class Main extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Main.class, args);
}
#Override
protected SpringApplicationBuilder configure(
SpringApplicationBuilder builder) {
return builder.sources(Main.class);
}
}
I think these dependencies should be enough (assuming you are using Thymeleaf):
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.3</version>
<relativePath/>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.4.3</version>
</dependency>
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring5</artifactId>
<version>3.0.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
EDIT: Your ModelAttribute 'Category' might not be parsed successfully. Either the mapping fails, or maybe the validation? You might find out by adding an error handler and/or debugging the sessions.
Other ideas: Use #RestController instead of #Controller. Try to make the request mappings more explicit. Instead of on the class, put one on each method:
#RequestMapping(value = "/categories", produces = "application/json", method=RequestMethod.GET)
public String index(Model model) {
...
#RequestMapping(value = "/categories", produces = "application/json", method=RequestMethod.POST)
public String addCategory(#ModelAttribute("category") #Valid Category category,
BindingResult bindingResult, Model model) {
...

Thanks everyone! I found answer on my question. It was some problems with HiddenHttpMethodFilter. I just added this code in my Spring Config and extra dependencies was . It stared to work!!!
public FilterRegistrationBean<HiddenHttpMethodFilter> hiddenHttpMethodFilter() {
FilterRegistrationBean<HiddenHttpMethodFilter> filterRegistrationBean =
new FilterRegistrationBean<HiddenHttpMethodFilter>(new HiddenHttpMethodFilter());
filterRegistrationBean.setUrlPatterns(Collections.singletonList("/*"));
return filterRegistrationBean;
}

Issues getting my Spring Boot index page and controller mappings to work when returning JSP view name

I am using Spring Boot and JSP to learn some quick tutorials in Spring Security but my controller mappings and index.jsp are not working. It seems it can't locate the JSP pages. Here is my config and project structure:
springsecurity-for-reactive-apps [boot] - Project folder
- src/main/java
- com.springsecurity
- SpringsecurityForReactiveAppsApplication.java
- com.springsecurity.config
- ApplicationConfig.java
- SecurityWebApplicationInitializer.java
- SpringMvcWebApplicationInitializer.java
- SpringSecurityConfig.java
- WebApplicationConfig.java
- src
- main
- webapp
- WEB-INF
- view
- home.jsp
- index.jsp
com.springsecurity package contains
#SpringBootApplication
public class SpringsecurityForReactiveAppsApplication {
public static void main(String[] args) {
SpringApplication.run(SpringsecurityForReactiveAppsApplication.class, args);
}
}
com.springsecurity.config package contains the following classes
#Configuration
public class ApplicationConfig {
#Value("${spring.datasource.driver-class-name}")
private String DB_DRIVER;
#Value("${spring.datasource.password}")
private String DB_PASSWORD;
#Value("${spring.datasource.url}")
private String DB_URL;
#Value("${spring.datasource.username}")
private String DB_USERNAME;
#Autowired
private Environment env;
#Bean
public DataSource getDataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(DB_DRIVER);
dataSource.setUrl(DB_URL);
dataSource.setUsername(DB_USERNAME);
dataSource.setPassword(DB_PASSWORD);
return dataSource;
}
}
And SecurityWebApplicationInitializer class is
public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer{
}
SpringMvcWebApplicationInitializer class is
public class SpringMvcWebApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer{
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { WebApplicationConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return null;
}
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
}
And my configuration class is
#Configuration
#EnableWebSecurity
//#EnableAutoConfiguration(exclude = {SecurityAutoConfiguration.class })
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter{
#Autowired
private DataSource dataSource;
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception{
auth.jdbcAuthentication().dataSource(dataSource)
.usersByUsernameQuery("select username, password, enabled"
+ " from users where username = ?")
.authoritiesByUsernameQuery("select username, authority "
+ "from authorities where username = ?")
.passwordEncoder(new BCryptPasswordEncoder());
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().anyRequest().hasAnyRole("ADMIN", "USER")
.and()
.httpBasic(); // Use Basic authentication
}
}
And
#Configuration
#EnableWebMvc
#ComponentScan(basePackages= {"com.springsecurity"})
public class WebApplicationConfig implements WebMvcConfigurer{
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
registry.jsp().prefix("/WEB-INF/view/").suffix(".jsp");
}
#Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}
- com.springsecurity.controller contains:
#Controller
public class HomeController {
#GetMapping("/home")
public String home(Model model, Principal principal) {
System.out.println("___________home()___________________");
return "home";
}
#GetMapping("/error")
public String error(Model model, Principal principal) {
System.out.println("___________ERROR-<<error___________________");
return "home";
}
}
POM.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.springsecurity</groupId>
<artifactId>springsecurity-for-reactive-apps</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springsecurity-for-reactive-apps</name>
<description>Spring security for reactive applications</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring dependencies START-->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-crypto</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<!-- Servlet and JSP related dependencies -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<!-- For datasource configuration -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
</dependency>
<!-- We will be using MySQL as our database server -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<!-- Spring dependencies END -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
When I go to http://localhost:8080, I get this page
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Thu Oct 18 03:24:51 CEST 2018
There was an unexpected error (type=Not Found, status=404).
No message available
The error page is mapped to show the home.jsp but I get the above page

1.viewResolver.setPrefix("/WEB-INF/views/"); views -> view
2.you can implements ErrorController in spring
#Controller
public class ViewController implements ErrorController {
#GetMapping("/home")
public String home(Model model) {
System.out.println("___________home()___________________");
return "home";
}
#GetMapping("/error")
public String error(Model model) {
System.out.println("___________ERROR-<<error___________________");
return "home";
}
#Override
public String getErrorPath() {
return "/error";
}
}

In your pom.xml remove
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
And add these dependency
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
As I know, to render jsp page in boot tomcat-embed-jasper is needed.

Issues with Spring Boot and Thymeleaf

Here are my configuration classes::
In the templateResolver() method without ServletContext parameter i get compile error so add it as a parameter and give it to ServletContextTemplateResolver(servletContext);
#Configuration
#EnableWebMvc
#ComponentScan(basePackages= {"com.packtpub.springsecurity"})
public class ThymeleafConfig {
#Bean
public ServletContextTemplateResolver templateResolver(ServletContext servletContext) {
ServletContextTemplateResolver resolver = new ServletContextTemplateResolver(servletContext);
resolver.setPrefix("/WEB-INF/templates/");
resolver.setSuffix(".html");
resolver.setTemplateMode("HTML5");
resolver.setCacheable(false);
resolver.setOrder(1);
return resolver;
}
#Bean
public SpringTemplateEngine templateEngine(final ServletContextTemplateResolver templateResolver) {
SpringTemplateEngine engine = new SpringTemplateEngine();
engine.setTemplateResolver(templateResolver);
return engine;
}
#Bean
public ThymeleafViewResolver thymeleafViewResolver(final SpringTemplateEngine templateEngine) {
ThymeleafViewResolver resolver = new ThymeleafViewResolver();
resolver.setTemplateEngine(templateEngine);
return resolver;
}
}
When i run my application i get following error:::
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method templateResolver in com.packtpub.springsecurity.web.configuration.ThymeleafConfig required a bean of type 'javax.servlet.ServletContext' that could not be found.
The injection point has the following annotations:
- #org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'javax.servlet.ServletContext' in your configuration.
What am i doing wrong?
thanks
Other config files are
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>chapter2</groupId>
<artifactId>chapter2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>chapter2</name>
<description>chapter 2 test</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Thymeleaf -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Spring dependencies START-->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-crypto</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<!-- Servlet and JSP related dependencies -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<!-- For datasource configuration -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
</dependency>
<!-- We will be using MySQL as our database server -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<!-- Spring dependencies END -->
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20170516</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
#Configuration
//#Import({SecurityConfig.class, DataSourceConfig.class})
#ComponentScan(basePackages =
{
"com.packtpub.springsecurity.dataaccess",
"com.packtpub.springsecurity.domain",
"com.packtpub.springsecurity.service"
}
)
#PropertySource(value = {"classpath:application.properties"})
public class JavaConfig {
/**
* Note: If you want to use #PropertySource, you must create a static
* PropertySourcesPlaceholderConfigurer with the #Bean as seen here.
* #return PropertySourcesPlaceholderConfigurer
* #throws java.io.IOException
*/
#Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() throws IOException {
PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer = new PropertySourcesPlaceholderConfigurer();
propertySourcesPlaceholderConfigurer.setIgnoreUnresolvablePlaceholders(Boolean.TRUE);
propertySourcesPlaceholderConfigurer.setProperties(yamlPropertiesFactoryBean().getObject());
return propertySourcesPlaceholderConfigurer;
}
#Bean
public static YamlPropertiesFactoryBean yamlPropertiesFactoryBean() {
YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
yaml.setResources(new ClassPathResource("application.yml"));
return yaml;
}
} // The end...
#Order(1)
public class SecurityWebAppInitializer
extends AbstractSecurityWebApplicationInitializer {
/**
* Don't initialize the filter directly, the Spring WebApplicationInitializer
* parent will take care of the initialization.
*/
public SecurityWebAppInitializer() {
super();
}
} // The end...
public class WebAppInitializer
extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { JavaConfig.class, SecurityConfig.class, DataSourceConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class[] { WebMvcConfig.class };
}
#Override
protected String[] getServletMappings() {
return new String[] { "/*" };
}
#Override
public void onStartup(final ServletContext servletContext)
throws ServletException {
// Register DispatcherServlet
super.onStartup(servletContext);
// Register H2 Admin console:
ServletRegistration.Dynamic h2WebServlet = servletContext.addServlet("h2WebServlet",
"org.h2.server.web.WebServlet");
h2WebServlet.addMapping("/admin/h2/*");
h2WebServlet.setInitParameter("webAllowOthers", "true");
}
} // The End...
#Configuration
#EnableWebMvc
#Import({ThymeleafConfig.class})
#ComponentScan(basePackages = {
"com.packtpub.springsecurity.web.controllers",
"com.packtpub.springsecurity.web.model"
})
public class WebMvcConfig extends WebMvcConfigurerAdapter
{
#Autowired
private ThymeleafViewResolver thymeleafViewResolver;
/**
* We mention this in the book, but this helps to ensure that the intercept-url patterns prevent access to our
* controllers. For example, once security has been applied for administrators try commenting out the modifications
* to the super class and requesting <a
* href="http://localhost:800/calendar/events/.html">http://localhost:800/calendar/events/.html</a>. You will
* observe that security is bypassed since it did not match the pattern we provided. In later chapters, we discuss
* how to secure the service tier which helps mitigate bypassing of the URL based security too.
*/
// FIXME: FInd out what this is and why it is here.
#Bean
public RequestMappingHandlerMapping requestMappingHandlerMapping() {
RequestMappingHandlerMapping result = new RequestMappingHandlerMapping();
result.setUseSuffixPatternMatch(false);
result.setUseTrailingSlashMatch(false);
return result;
}
#Override
public void addResourceHandlers(final ResourceHandlerRegistry registry) {
super.addResourceHandlers(registry);
registry.addResourceHandler("/resources/**")
.addResourceLocations("/resources/")
.setCachePeriod(31_556_926)
;
}
#Override
public void configureContentNegotiation(final ContentNegotiationConfigurer configurer) {
configurer
.ignoreAcceptHeader(false)
.favorPathExtension(true) // .html / .json / .ms
.defaultContentType(MediaType.TEXT_HTML) // text/html
.mediaTypes(
new HashMap<String, MediaType>(){
{
put("html", MediaType.TEXT_HTML);
put("xml", MediaType.APPLICATION_XML);
put("json", MediaType.APPLICATION_JSON);
}
})
;
}
#Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(new MappingJackson2HttpMessageConverter());
}
/*#Bean
public ContentNegotiatingViewResolver contentNegotiatingViewResolver() {
ContentNegotiatingViewResolver result = new ContentNegotiatingViewResolver();
Map<String, String> mediaTypes = new HashMap<>();
mediaTypes.put("json", MediaType.APPLICATION_JSON_VALUE);
// result.setMediaTypes(mediaTypes);
result.setDefaultViews(Collections.singletonList(jacksonView()));
return result;
}*/
#Bean
public MappingJackson2JsonView jacksonView() {
MappingJackson2JsonView jacksonView = new MappingJackson2JsonView();
jacksonView.setExtractValueFromSingleKeyModel(true);
Set<String> modelKeys = new HashSet<String>();
modelKeys.add("events");
modelKeys.add("event");
jacksonView.setModelKeys(modelKeys);
return jacksonView;
}
#Override
public void configureViewResolvers(final ViewResolverRegistry registry) {
registry.viewResolver(thymeleafViewResolver);
}
// i18N support
#Bean
public ReloadableResourceBundleMessageSource messageSource() {
ReloadableResourceBundleMessageSource resource = new ReloadableResourceBundleMessageSource();
resource.setBasenames("/WEB-INF/locales/messages");
resource.setDefaultEncoding("UTF-8");
resource.setFallbackToSystemLocale(Boolean.TRUE);
return resource;
}
#Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer){
configurer.enable();
}
}
UPDATED
I have deleted the following dependencies from the POM according to #Adina in the comment below but still get the errors
<!-- dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency-->
What else can i do again

After some debugging on your code, the real problem is that you are autowiring ThymeleafViewResolver in the configuration responsible to configure servlet context.
public class WebMvcConfig implements WebMvcConfigurer{
#Autowired
private ThymeleafViewResolver thymeleafViewResolver;
The main problem is that before initializing your ServletContext, the application will try to initialize the ServletContextTemplateResolver (autowired will impose bean order initialization) and as you've noticed it depends on ServletContext.
Solution :
delete ThymeleafConfig class
don't autowire ThymeleafViewResolver in WebMvcConfig
and don't override method configureViewResolvers.
Don't worry, Thymeleaf will be set by default as the viewResolver.
Most of the config you've provided is already "taken care" by spring-boot-starter-thymeleaf.
If you want just to change default view directory resolver, you can just add in application.properties
spring.mvc.view.prefix=/WEB-INF/templates/
spring.mvc.view.suffix=.html
P.S: Take extra care when you override default definition from spring starters, as you can see these types of bugs are not easy to find.

Spring Cloud DataFlow - How to use a custom TCP encoder/decoder in TCP source

I have already asked this question for Spring XD. I am now trying to migrate to Spring CDF.
I found this link and I tried to reuse the code there and change the encoding with mine.
I created the following POM:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>tcp-ber-source</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>TCP Ber Source</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<tcp-app-starters-common.version>1.1.0.RELEASE</tcp-app-starters-common.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-kafka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud.stream.app</groupId>
<artifactId>tcp-app-starters-common</artifactId>
<version>${tcp-app-starters-common.version}</version>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>ber-byte-array-serializers</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Configuration:
#EnableBinding(Source.class)
#EnableConfigurationProperties(TcpBerSourceProperties.class)
public class TcpBerSourceConfiguration {
private final Source channels;
private final TcpBerSourceProperties properties;
#Autowired
public TcpSourceConfiguration(final TcpBerSourceProperties properties, final Source channels) {
this.properties = properties;
this.channels = channels;
}
#Bean
public TcpReceivingChannelAdapter adapter(#Qualifier("tcpBerSourceConnectionFactory") final AbstractConnectionFactory connectionFactory) {
final TcpReceivingChannelAdapter adapter = new TcpReceivingChannelAdapter();
adapter.setConnectionFactory(connectionFactory);
adapter.setOutputChannel(this.channels.output());
return adapter;
}
#Bean
public TcpConnectionFactoryFactoryBean tcpBerSourceConnectionFactory(#Qualifier("tcpBerSourceDecoder") final AbstractByteArraySerializer decoder) throws Exception {
final TcpConnectionFactoryFactoryBean factoryBean = new TcpConnectionFactoryFactoryBean();
factoryBean.setType("server");
factoryBean.setPort(this.properties.getPort());
factoryBean.setUsingNio(this.properties.isNio());
factoryBean.setUsingDirectBuffers(this.properties.isUseDirectBuffers());
factoryBean.setLookupHost(this.properties.isReverseLookup());
factoryBean.setDeserializer(decoder);
factoryBean.setSoTimeout(this.properties.getSocketTimeout());
return factoryBean;
}
#Bean
public BerEncoderDecoderFactoryBean tcpBerSourceDecoder() {
final BerEncoderDecoderFactoryBean factoryBean = new BerEncoderDecoderFactoryBean(this.properties.getDecoder());
factoryBean.setMaxMessageSize(this.properties.getBufferSize());
return factoryBean;
}
}
And this FactoryBean:
public class BerEncoderDecoderFactoryBean extends AbstractFactoryBean<AbstractByteArraySerializer> implements ApplicationEventPublisherAware {
private final BerEncoding encoding;
private ApplicationEventPublisher applicationEventPublisher;
private Integer maxMessageSize;
public BerEncoderDecoderFactoryBean(final BerEncoding encoding) {
Assert.notNull(encoding, "'encoding' cannot be null");
this.encoding = encoding;
}
#Override
public void setApplicationEventPublisher(final ApplicationEventPublisher applicationEventPublisher) {
this.applicationEventPublisher = applicationEventPublisher;
}
/**
* The maximum message size allowed when decoding.
* #param maxMessageSize the maximum message size.
*/
public void setMaxMessageSize(final int maxMessageSize) {
this.maxMessageSize = maxMessageSize;
}
#Override
protected AbstractByteArraySerializer createInstance() throws Exception {
final AbstractByteArraySerializer codec;
switch (this.encoding) {
case SPLIT:
codec = new ByteArrayBerSplitSerializer();
break;
case EXTRACT:
codec = new ByteArrayBerExtractSerializer();
break;
default:
throw new IllegalArgumentException("Invalid encoding: " + this.encoding);
}
codec.setApplicationEventPublisher(this.applicationEventPublisher);
if (this.maxMessageSize != null) {
codec.setMaxMessageSize(this.maxMessageSize);
}
return codec;
}
#Override
public Class<?> getObjectType() {
return AbstractByteArraySerializer.class;
}
}
BerEncoding is a simple enum, and TcpBerSourceProperties are pretty straightforward.
Is this the right approach?
If it is, how can I run this? I can't see #SpringBootApplication anywhere on the tcp stream app starters I found on the mentioned link to run as Spring Boot standalone applications?

You have to create your own Spring Boot App class and import the configuration class; see the documentation about creating custom apps.
We generate a standard app (for rabbit and kafka binders) from the starters as explained here.