Question

我创建了@RestController并映射了@PostMapping请求。

我将内容类型作为“application / json”传递给控制器，我正在阅读JSON，并将@RequestBody注释映射到我的Model类对象。

@RestController：

@PostMapping("/saveUser")
public UserDetails save(@RequestBody UserDetails user) {
    System.out.println("from json input : "+user.idVal+" : "+user.getName());
    service.save(user);
    JSONObject jsn = new JSONObject();
    jsn.put("Result", user.getName());
    return user;
}

HTTP请求

{
"idVal":"asdadasd",
"name":"TestUser"
}

模型类

import javax.persistence.Entity;
javax.persistence.Id;

@Entity
public class UserDetails {

    @Id
    public String idVal;
    public String name;

    public String getId() {
        return idVal;
    }
    public void setId(String id) {
        this.idVal = id;
    }

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

我使用Postman作为REST客户端。

以下是我得到的错误：

HTTP Status 415 â€“ Unsupported Media Type
Type Status Report

Description The origin server is refusing to service the request because the payload is in a format not supported by this method on the target resource.

Apache Tomcat/8.5.31

我尝试过如下：

@PostMapping(value="/saveUser", consumes=MediaType.APPLICATION_JSON_VALUE, produces=MediaType.APPLICATION_JSON_VALUE)
public UserDetails save(@RequestBody UserDetails user) {
    System.out.println("from json input : "+user.idVal+" : "+user.getName());
    service.save(user);
    JSONObject jsn = new JSONObject();
    jsn.put("Result", user.getName());
    return user;
}

编辑：

以下是完整的邮递员申请：

 POST /Zcrud/saveUser HTTP/1.1
Host: localhost:8080
Content-Type: application/json
Cache-Control: no-cache
Postman-Token: fa4cfc76-d60c-f8dd-53b9-fd8b0b27ef7d

{
    "idVal":"asdadasd",
    "name":"TestUser"
}

响应：

<!doctype html><html lang="en"><head><title>HTTP Status 415 – Unsupported Media Type</title><style type="text/css">h1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} h2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} h3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} body {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} b {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} p {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;} a {color:black;} a.name {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 415 – Unsupported Media Type</h1><hr class="line" /><p><b>Type</b> Status Report</p><p><b>Description</b> The origin server is refusing to service the request because the payload is in a format not supported by this method on the target resource.</p><hr class="line" /><h3>Apache Tomcat/8.5.31</h3></body></html>

Answer 1

您的请求中的application/json已从邮递员传递到您的应用。但是您的服务器无法理解application/json是什么。

所以，你必须在你的服务器中定义，将处理什么类型的请求，以及它将产生什么类型的响应。

要执行此操作，请更改@RestController @PostMapping，如下所示

@PostMapping(value ="/saveUser", consumes = MediaType.APPLICATION_JSON_VALUE,
        produces = MediaType.APPLICATION_JSON_VALUE)
public UserDetails save(@RequestBody UserDetails user) {
   System.out.println("from json input : "+user.idVal+" : "+user.getName());
   service.save(user);
   JSONObject jsn = new JSONObject();
   jsn.put("Result", user.getName());
   return user;
}

希望它有所帮助!! :)

Answer 2

将Content-Type：application / json; odata = verbose添加到@PostMapping注释中

@PostMapping不起作用。 HTTP 415不支持的MediaType错误

2 个答案: