java - 如何在 Spring Controller 中自动将 JSON 映射到 Java 类

Question

我有以下代码:

public class MyClass {

    String xxx;
    String yyy;

    public String getXxx() {
        return xxx;
    }
    public void setXxx(String xxx) {
        this.xxx = xxx;
    }
    public String getYyy() {
        return yyy;
    }
    public void setYyy(String yyy) {
        this.yyy = yyy;
    }
    public MyClass(String xxx, String yyy) {
        super();
        this.xxx = xxx;
        this.yyy = yyy;
    }

    @Override
    public String toString() {
        return "MyClass [xxx=" + xxx + ", yyy=" + yyy + "]";
    }
}

我还实现了服务:

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
class MyService {

    @RequestMapping(value = "/abc", method = RequestMethod.POST, produces = "application/json")

    public @ResponseBody
    String add(@RequestBody String myClass, HttpServletRequest request,
        HttpServletResponse response) {

        return "Test";
    }

}

当我使用带有 JSON 的 DEV HTTP CLIENT 进行 HTTP 调用时:

{"xxx":"abc", "yyy":"abc"}

我看到一个错误:

Error 406 NOT_ACCEPTABLE

是否可以通过这种方式进行，或者我必须对 JSON 进行编码并创建一个 Java 对象？

Answer 1

尝试在@RequestMapping中添加produces="application/json"

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
class MyService {

@RequestMapping(value = "/abc", method = RequestMethod.POST,produces = "application/json" )
    public @ResponseBody String myMethod( @RequestBody String _json,HttpServletRequest request,
        HttpServletResponse response) {
        return _json;
    }   
}