I create a project using Spring Initializer.
I added a mapping for /hello:
package com.propfinancing.www;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
#RestController
#SpringBootApplication
public class PfWebApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(PfWebApplication.class, args);
}
#GetMapping("/hello")
public String hello(#RequestParam(value = "name", defaultValue = "World") String name) {
return String.format("Hello %s!", name);
}
}
I created a war file and uploaded that to my tomcat server.
When I go to the URL http://dev.propfinancing.com/www/hello
I get a 404 - Not Found page.
Any idea what went wrong?
I think I figured it out.
Apparently, Spring 5 does not work with tomcat 10:
https://github.com/spring-projects/spring-boot/issues/22414
I am going to install Tomcat 9 on my server and see if that works.
Related
Hi I m beginner and I have a simple problem, my url doesn't work. localhost:8080 work but not with /api. The project is built properly.
Localhost:8080
I put #ComponentScan("com.tutojwt.test.repository") because without it doesn't work.
Here my code
Controller :
package com.tutojwt.test.api;
import com.tutojwt.test.model.User;
import com.tutojwt.test.service.UserService;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
#RestController
#RequestMapping("/api")
#RequiredArgsConstructor
public class UserController {
private final UserService userService;
#GetMapping("/users")
public ResponseEntity<List<User>>getUsers(){
return ResponseEntity.ok().body(userService.getUsers());
}
Testapplication :
package com.tutojwt.test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
#SpringBootApplication
#ComponentScan("com.tutojwt.test.repository")
public class TestApplication {
public static void main(String[] args) {
SpringApplication.run(TestApplication.class, args);
}
}
Project structure
MAJ : Some of you say that is ComponentScan the prob but there are error if I dont put com.tutojwt.test.repository or just com.tutojwt.test
#ComponentScan("com.tutojwt.test") error
Without ComponentScan
You should call http://localhost:8080/api/users . #ComponentScan shouldn't be necessary and might actually cause problems (I don't think your controller class is scanned now, and some default hateoas endpoint is the one you're calling). #SpringBootApplication annotation has #EnableAutoConfiguration annotation by default and should scan all component annotated classes. If not, check your class structure again.
I have my spring project setup as shown below, but I am getting a 404 on the /custom endpoint. All answers I've found similar to this problem highlighted that the controller layer needs to be in a package below the project layer however I have it set out like this so I'm unsure why Spring isn't recognising the endpoint.
package com.myproject.controller;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
#RequestMapping("custom")
public class CustomPathController {
#GetMapping
public ResponseEntity<Void> test() {
return new ResponseEntity<>(HttpStatus.OK);
}
}
package com.myproject;
import com.ryantenney.metrics.spring.config.annotation.EnableMetrics;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.transaction.annotation.EnableTransactionManagement;
#EnableMetrics
#EnableJpaRepositories
#SpringBootApplication
public class MyProject {
public static void main(String[] args) {
SpringApplication.run(MyProject.class, args);
}
}
There must have been a port clash as a PC restart has fixed the issue
newbie pb on Spring Boot, I cannot get a RestController to be added to my application.
Here are the 2 files used to build this very simple app with maven:
1) Application.java
package com.learn.hello;
import java.util.Arrays;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
#Configuration
#ComponentScan(basePackages = "com.learn.hello.controller")
#RestController
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
#RequestMapping("/")
public String index() {
return "Greetings from Spring Boot!";
}
}
HelloController.java
package com.learn.hello.controller;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMapping;
#RestController
public class HelloController {
#RequestMapping("/titi")
public String index() {
return "Greetings from titi Boot!";
}
}
Structure of the project
/src/main/java/com/learn/hello/Application.java
/src/main/java/com/learn/hello/controller/HelloController.java
/target/*
/pom.xml
localhost:8080 works
but localhost:8080/titi does not (404 not found)
Any idea ?
Thx
You forgot to provide request method RequestMethod.GET :
#RequestMapping(value = "/students", method = RequestMethod.GET)
You can use #GetMapping("/titi") instead of #RequestMapping("/titi") :
#GetMapping("/titi")
To all, thanks a lot to all for your answers.
#Valerio,
you were right it was correct!!! In fact an invisible char got added at the end of the filename: HelloController.java (me probably messing-up with Sublime...), thus it was not processed as a java file by maven...
Sorry for the noise.My apologies.
BTW if anybody knows about any sort of options to actually warn that a file located in the /src/main/java/* directories was not processed as a "regular java project" file I'm interested to know about it even though I doubt that this is really feasible and thus existing...
I have Spring Boot application with a single index.html page.
I need to have server.servlet.path=/api setting.
In order to get index.html I have to go localhost:8080/api/ becase of my setting described above.
I want to be able to get index.html by localhost:8080/ and any else endpoints by localhost:8080/api/**.
How can I do it?
Thanks
Once you configured server.servlet.path=/api, DispatcherServlet is going to handle only request matching URL Patterns /api/**.
One way to achieve your requirement is to use a plain Servlet.
import org.springframework.core.io.ClassPathResource;
import org.springframework.util.StreamUtils;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.Charset;
#WebServlet(urlPatterns = {"/"})
public class RootServlet extends HttpServlet {
#Override
protected void service(HttpServletRequest req, HttpServletResponse resp) throws IOException {
ClassPathResource resource = new ClassPathResource("static/index.html");
String content = StreamUtils.copyToString(resource.getInputStream(), Charset.defaultCharset() );
resp.getWriter().write(content);
}
}
Now you can register the Servlet using #ServletComponentScan annotation. Assuming you put RootServlet in com.myapp.servlets package:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
#SpringBootApplication
#ServletComponentScan(basePackages = "com.myapp.servlets")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
For more info see https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-add-a-servlet-filter-or-listener
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#SpringBootApplication
#RestController
public class TrackingManagementSystemApplication {
public static void main(String[] args) {
SpringApplication.run(TrackingManagementSystemApplication.class, args);
}
#RequestMapping("/hello")
public String sayHello(){
return "Hello";
}
}
I ran the above application by using mvn spring-boot:run command it is deploying successfully but when i am trying to access it from browser it is throwing Http 404 exception.
I wanna access it from any web browser.
thank you