415 Spring 应用程序中不支持 POST 请求的 MediaType
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415 Unsupported MediaType for POST request in spring application
提问by brain storm
I have a very simple SpringApplication (NOT spring boot). I have implemented a GET and POST controller methods. the GETmethod works fine. But the POSTis throwing 415 Unsupported MediaType. Steps to reproduce are available below
我有一个非常简单的Spring应用程序（不是 spring boot）。我已经实现了 GET 和 POST 控制器方法。该GET方法工作正常。而是在POST扔415 Unsupported MediaType。重现步骤如下
ServiceController. java
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
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
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:
该代码可在此处获得：
git clone https://bitbucket.org/SpringDevSeattle/springrestcontroller.git
./gradlew clean build tomatrunwar
This spins up embedded tomcat.
这会启动嵌入式 tomcat。
Now you can curl the following
现在您可以卷曲以下内容
curl -X GET -H "Content-Type: application/json" "http://localhost:8095/myApp/service/example/sample"
works fine
工作正常
But
但
curl -X POST -H "Content-Type: application/json" '{
"id":1,
"name":"sai"
}' "http://localhost:8095/myApp/service/example/sample2"
Throws 415 unsupported MediaType
抛出 415 个不受支持的 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>
采纳答案by brain storm
I found the solution and I want to post here so it benefits others.
我找到了解决方案，我想在这里发帖，以便其他人受益。
Firstly I need to include Hymanson in my classpath, which I added in build.gradle as follows:
首先，我需要在我的类路径中包含 Hymanson，我在 build.gradle 中添加如下：
compile 'com.fasterxml.Hymanson.core:Hymanson-databind:2.7.5'
compile 'com.fasterxml.Hymanson.core:Hymanson-annotations:2.7.5'
compile 'com.fasterxml.Hymanson.core:Hymanson-core:2.7.5'
Next, I have to change my AppConfigwhich extends WebMvcConfigurerAdapteras follows:
接下来，我必须更改 my AppConfigwhich 扩展WebMvcConfigurerAdapter如下：
@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);
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(new MappingHymanson2HttpMessageConverter());
super.configureMessageConverters(converters);
}
}
That is all and everything worked nicely
就是这样，一切都很好
回答by Tahir Hussain Mir
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.
接受标题可能是问题所在。据我所知，当您通过 curl 发送请求时，它会添加一个默认标头accept : */*
但在 JSON 的情况下，您必须提到接受标头，
就像accept : application/json
您提到的内容类型一样。
And little more, i dont know what is that, but don't you think you have to place "request mappings" like that
还有一点，我不知道那是什么，但你不认为你必须像那样放置“请求映射”
@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
情况可能并非如此，但接受标题是问题，我认为这是主要问题。
解决方案 2
因为你有这个代码
public String getResponse2(@RequestBody Person person)
I have already faced this problem before and the solution two may help here
我之前已经遇到过这个问题，解决方案二可能会在这里有所帮助
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
当内容类型为 application/x-www-form-urlencoded 时，用于 @RequestBody 注释参数的 FormHttpMessageConverter 不能像 @ModelAttribute 那样绑定目标类）。因此你需要 @ModelAttribute 而不是 @RequestBody
Either Use @ModelAttribute annotation instead of @RequestBody like this
要么像这样使用@ModelAttribute 注释而不是@RequestBody
public String getResponse2(@ModelAttribute Person person)
I provided the same answer to somebody and it helped. here is that answerof mine
我向某人提供了相同的答案，它有所帮助。这是我的答案
回答by Periklis Douvitsas
can you trying using the -d option in curl
您可以尝试在 curl 中使用 -d 选项吗
curl -H "Content-Type: application/json" -X POST -d
'{"id":"1,"name":"sai"}'
http://localhost:8095/myApp/service/example/sample2
Also, if you use windows you should escape double quotes
此外，如果您使用 Windows，您应该转义双引号
-d "{ \"id\": 1, \"name\":\"sai\" }"
