I'm trying to link a HTML page to my Spring boot application.
I've connected a SQL DB to it, and have set up the needed controllers, but cannot map the HTML page to the local host.
Here is the GIT for the project.
https://github.com/ThierryLucDenichaud/SpringBoot_SQL_SPRING_HTML.git
Create a configuration file that look like the following:
#Configuration
public class WebMvcConfiguration extends WebMvcConfigurerAdapter {
#Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("indexPage.html");
registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
}
}
This will create a default controller for serving your index.html on /.
A little recommendation, change indexPage.html to index.html and also setViewName("indexPage.html") to setViewName("index.html") as index.html is usually the default in most systems and frameworks.
EDIT
I just noticed your public folder is in src/main while it should be in src/main/resources. spring boot won't handle your static files unless they are first in src/main/resources then in public as the default folder that is exposed to the outside world.
Also in Java you should place classpath resources in src/main/resources or src/test/resources for tests.
Related
I have to provide static .js files through a JAR project.
For this I created a JAR(using MAVEN) which looks like:
parent
|--com
|--META-INF
|--webapp
|--resources
|--js
|--myjs.js
Now, I added this JAR to my parent spring-boot project and in one of the JSPs added
<script src="resources/js/myjs.js"></script>
This gives me a 404 error.
My conclusion: Either the boot project does not merge webapp folders from JARs into its own webapp or I am accessing the file incorrectly.
These questions did not help(cannot change WebMvcConfigurerAdapter and java code is strictly not allowed ):
SpringBoot - accessing a file inside resources folder
Serve static resources within jar files by Spring boot
Usually, such things are handled using overlays but that would be and overkill for a simple use case.
Your webapp folder is secured folder.You cannot access files directly inside it.
You need to permit all your incoming requests of js and other static files as following:-
#Configuration
#EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/", "/js/**", "/css/**").permitAll();
http.csrf().disable();
}
}
I'm trying to make Spring Security permit access to static resources to all users, but for now nothing works.
When I used jsp in previous project, the solution was simple:
http
.authorizeRequests()
.antMatchers("/static/**").permitAll()
.anyRequest().authenticated()
Static folder was placed inside webapp folder which was the root folder and was easily detected by Spring Security. Now, because of Thymeleaf, there is no webapp folder and all the static folders are placed into src/main/resources. I have no idea, how to create antMatcher for something that is inside resources folder... I tried that:
http
.authorizeRequests()
.antMatchers("resources:/static/**").permitAll()
.anyRequest().authenticated()
It never worked. What is the solution?
ps. I have seen a statement that Spring Boot + Spring Security allows this intra-resources access by default, but it does not.
The solution is found. For my folder structure src/main/resource/static/css I should have used
.antMatchers("/css/**").permitAll()
instead of
.antMatchers("/static/**").permitAll()
Check my answer there: Spring boot mapping static html
Basically you have to add resource handlers by extending WebMvcConfigurerAdapter to map http://yoursite/static_url_prefix to your static_app_dir directory in your resources directory.
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/static_url_prefix/**").addResourceLocations("classpath:/static_app_dir/");
super.addResourceHandlers(registry);
}
This will intercept all request coming to http://yoursite/static_url_prefix and return results from classpath://static_app_dir in your jar file or from /resources/static_app_dir when running application from your IDE.
Spring security can be configured as before as it has nothing to do with it i.e. your first code example seems correct.
I read the following documentation from spring.io and it said By default Spring Boot will serve static content from a directory called /static (or /public or /resources or /META-INF/resources) in the classpath however when I put my index.html file under /resources the string index is just rendered. Currently index.html is under webapp and I am using AngularJS.
MvcConfiguration
#Configuration
public class MvcConfig {
#Bean
InternalResourceViewResolver viewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/webapp/");
resolver.setSuffix(".html");
return resolver;
}
}
Restful Service for index page
#RestController
public class IndexController {
#RequestMapping("/")
public String index(){
System.out.println("Looking in the index controller.........");
return "index";
}
}
ON my IDE console I do see Looking in the index controller...... printed from IndexController and under network in the Chrome development tools I only see localhost 200.
index.html
<body>
<!--[if lt IE 7]>
<p class="browsehappy">You are using an <strong>outdated</strong> browser. Please upgrade your browser to improve your experience.</p>
<![endif]-->
<div ng-view></div>
<div>Angular seed app: v<span app-version></span></div>
Spring Boot docs also says:
Do not use the src/main/webapp directory if your application will be
packaged as a jar. Although this directory is a common standard, it
will only work with war packaging and it will be silently ignored by
most build tools if you generate a jar.
Spring Boot is very opinionated and works best when you do not try to resist defaults. I don't see any reason having your files placed in /src/main/webapp. Just use /src/main/resources/static for your front-end assets. That is most common place.
It will serve these static files from root URI automatically, without need to create any root level Controller. In fact your IndexController would prevent static front-end files to be served from root URI. There is no need to create Controller for static files at all.
Also view resolver is not needed for your app. Your app is just REST API consumed by single page angular application. So your HTML templating is on client. View resolvers are needed if you are doing server side HTML templating (e.g. with Thymeleaf or JSP). So remove that piece also.
#RestController
public class IndexController {
#RequestMapping("/")
public String index(){
System.out.println("Looking in the index controller.........");
return "index";
}
}
Problem is here, you are using #RestController, so in this case, if you write "return 'index';" spring boot covers it as just string answer. You need use #Controller annotation instead.
I am doing a research on how to make a proper structure for my web application.
It will be a web application serving as a platform for additional, independent components.
The components must be able to map requests by using the #Controller annotaion.
So far I have learned, that:
The platform will be deployed as a .war file on Tomcat.
The platform classpath location will contain components in a form of .jar files.
My question is:
How to setup the components and the platform, so that platform will make use of the components' #Controllers?
So far I have the platform.war running on Tomcat. It is annotation based Spring configuration.
I also have the first component, it is a single Java class with #Controller annotation and first mapping. For some reason when I include this component in the classpath of the platform and try to access the url mapped in the component, the application returns 404 error. In the log files it says "No mapping found for HTTP request" so it does not initialize the component's #Controller.
For further explanation click here.
In your JAR file, create a package defining your namespace, i.e: "com.platformproject.web". Then all you need to do is put the JAR file in WEB-INF/lib (or better use Maven Modules) and scan the annotations at startup:
MvcConfig.java
#EnableWebMvc
#Configuration
#ComponentScan(basePackages = { "com.platformproject.web" })
public class MvcConfig extends WebMvcConfigurerAdapter { ... }
I am using spring boot with thymeleaf. This is my project structure:
And this is my App start class:
#EnableAutoConfiguration
#Configuration
#ComponentScan
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class);
}
}
I have this on my home.leaf.html: <p th:text = "#{username}"></p>
But when I run this application this is what I get: ??username_en_US??
I have tried various things on how to resolve this configuration issue. Please, can anyone help?
Refer the official documentation for spring boot
http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#howto-convert-an-existing-application-to-spring-boot
It says
Static resources can be moved to /public (or /static or /resources or
/META-INF/resources) in the classpath root. Same for
messages.properties (Spring Boot detects this automatically in the
root of the classpath).
So you should create ur internationalization file as messages.properties and place in the root classpath.
Or you can also edit the default location to a more proper location by adding this entry in the application.properties file
#messages
spring.messages.basename=locale/messages
so you can store your files in the locale folder inside resources folder, with the name messages.properties or in any specific language.