I have a very simple Spring
Application (NOT spring boot). I have implemented a GET and POST controller methods. the GET
method works fine. But the POST
is throwing 415 Unsupported MediaType
. Steps to reproduce are available below
ServiceController. java
package com.example.myApp.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping("/service/example")
public class ServiceController {
@RequestMapping(value="sample", method = RequestMethod.GET)
@ResponseBody
public String getResp() {
return "DONE";
}
@RequestMapping(value="sample2", method = RequestMethod.POST, consumes = "application/json")
@ResponseBody
public String getResponse2(@RequestBody Person person) {
return "id is " + person.getId();
}
}
class Person {
private int id;
private String name;
public Person(){
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
AppConfig.java
package com.example.myApp.app.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
@EnableWebMvc
@ComponentScan("com.example.myApp")
public class AppConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/test/**").addResourceLocations("/test/").setCachePeriod(0);
registry.addResourceHandler("/css/**").addResourceLocations("/css/").setCachePeriod(0);
registry.addResourceHandler("/img/**").addResourceLocations("/img/").setCachePeriod(0);
registry.addResourceHandler("/js/**").addResourceLocations("/js/").setCachePeriod(0);
}
}
AppInitializer.java
package com.example.myApp.app.config;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
public class AppInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
// Create the 'root' Spring application context
AnnotationConfigWebApplicationContext rootContext =
new AnnotationConfigWebApplicationContext();
rootContext.register(AppConfig.class);
servletContext.addListener(new ContextLoaderListener(rootContext));
// Register and map the dispatcher servlet
ServletRegistration.Dynamic dispatcher =
servletContext.addServlet("dispatcher", new DispatcherServlet(rootContext));
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/");
}
}
The code is available here:
git clone https://bitbucket.org/SpringDevSeattle/springrestcontroller.git
./gradlew clean build tomatrunwar
This spins up embedded tomcat.
Now you can curl the following
curl -X GET -H "Content-Type: application/json" "http://localhost:8095/myApp/service/example/sample"
works fine
But
curl -X POST -H "Content-Type: application/json" '{
"id":1,
"name":"sai"
}' "http://localhost:8095/myApp/service/example/sample2"
Throws 415 unsupported MediaType
<body>
<h1>HTTP Status 415 - </h1>
<HR size="1" noshade="noshade">
<p>
<b>type</b> Status report
</p>
<p>
<b>message</b>
<u></u>
</p>
<p>
<b>description</b>
<u>The server refused this request because the request entity is in a format not supported by the requested resource for the requested method.</u>
</p>
<HR size="1" noshade="noshade">
<h3>Apache Tomcat/7.0.54</h3>
</body>
Accept Header might be the issue.
As far as i remember, when you send a request via curl it adds a default header accept : */*
But in case of JSON you have to mention the accept header
as accept : application/json
similarly you have mentioned the content-Type.
And little more, i dont know what is that, but don't you think you have to place "request mappings" like that
@RequestMapping(value="/sample" ...
@RequestMapping(value="/sample2" ...
This may not be the case, but accept header is the thing, i think is the main issue.
Solution 2
Since you have this code
public String getResponse2(@RequestBody Person person)
I have already faced this problem before and the solution two may help here
FormHttpMessageConverter which is used for @RequestBody-annotated parameters when content type is application/x-www-form-urlencoded cannot bind target classes as @ModelAttribute can). Therefore you need @ModelAttribute instead of @RequestBody
Either Use @ModelAttribute annotation instead of @RequestBody like this
public String getResponse2(@ModelAttribute Person person)
I provided the same answer to somebody and it helped. here is that answer of mine