Spring JSON请求体未映射到Java POJO [英] Spring JSON request body not mapped to Java POJO

问题描述

我正在使用Spring来实现RESTful Web服务。其中一个端点将JSON字符串作为请求体，我希望将其映射到POJO。但是，现在似乎传入的JSON字符串不是映射到POJO的属性。

这里是@RestController接口

  @RequestMapping（value =/ send，headers =Accept = application / json，method = RequestMethod.POST）
 public void sendEmails（@ RequestBody CustomerInfo customerInfo）; 
  

数据模型

  public class CustomerInfo {
 private String firstname; 
 private String lastname; 
 public CustomerInfo（）{
 this.firstname =first; 
 this.lastname =last; 
} 
 
 public CustomerInfo（String firstname，String lastname）
 {
 this.firstname = firstname; 
 this.lastname = lastname; 
} 
 
 public String getFirstname（）{
 return firstname; 
} 
 
 public void setFirstname（String firstname）{
 this.firstname = firstname; 
} 
 
 public String getLastname（）{
 return lastname; 
} 
 
 public void getLastname（String lastname）{
 this.lastname = lastname; 
} 
} 
  

最后我的POST请求：

  {CustomerInfo：{firstname：xyz，lastname：XYZ}} 
  

Content-Type指定为application / json

然而，当我打印出对象值，打印出默认值（first和last）而不是我传入的值（xyz和XYZ）

<有谁知道为什么我没有得到我预期的结果？

FIX

事实证明，请求体的值没有传入，因为我不仅需要在我的界面中使用@RequestBody注释，而且还需要实际的方法实现。一旦我有了，问题就解决了。

解决方案

事实证明，请求体的值没有传入因为我不仅需要在我的界面中使用@RequestBody注释，而且还需要在实际的方法实现中。一旦我有了，问题就解决了。

I'm using Spring to implement a RESTful web service. One of the endpoints takes in a JSON string as request body and I wish to map it to a POJO. However, it seems right now that the passed-in JSON string is not property mapped to the POJO.

here's the @RestController interface

@RequestMapping(value="/send", headers="Accept=application/json", method=RequestMethod.POST)
public void sendEmails(@RequestBody CustomerInfo customerInfo);

the data model

public class CustomerInfo {
    private String firstname;
    private String lastname; 
    public CustomerInfo() {
        this.firstname = "first";
        this.lastname = "last";
    }

    public CustomerInfo(String firstname, String lastname)
    {
        this.firstname = firstname;
        this.lastname = lastname;
    }

    public String getFirstname(){
        return firstname;
    }

    public void setFirstname(String firstname){
        this.firstname = firstname;
    }

    public String getLastname(){
        return lastname;
    }

    public void getLastname(String lastname){
        this.lastname = lastname;
    }
}

And finally my POST request:

{"CustomerInfo":{"firstname":"xyz","lastname":"XYZ"}}

with Content-Type specified to be application/json

However, when I print out the object value, the default value("first" and "last") got printed out instead of the value I passed in("xyz" and "XYZ")

Does anyone know why I am not getting the result I expected?

FIX

So it turned out that, the value of request body is not passed in because I need to have the @RequestBody annotation not only in my interface, but in the actual method implementation. Once I have that, the problem is solved.

解决方案

So it turned out that, the value of request body is not passed in because I need to have the @RequestBody annotation not only in my interface, but in the actual method implementation. Once I have that, the problem is solved.

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