org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representatio

封装springboot返回值+枚举出现org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation

代码实现

1.定义返回值类ResultData

public class ResultData {    private String code;    private String message;    private java.util.List<Object> List;    public ResultData(String code, String message, java.util.List<Object> list) {        this.code = code;        this.message = message;        List = list;    }    public ResultData(CTPEnum retsuccess, ArrayList<Object> list) {        this.code = retsuccess.getCode();        this.message = retsuccess.getMessage();        List = list;    }    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }    public java.util.List<Object> getList() {        return List;    }    public void setList(java.util.List<Object> list) {        List = list;    }}

2.定义枚举类CTPEnum

public enum CTPEnum {    PARAMETER("0001","参数为空"),    RETURNDATA("0002","数据为空"),    ok("ok","成功");    private String code;    private String message;    CTPEnum(String code, String message) {        this.code=code;        this.message=message;    }    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }}

3.定义请求controller

@RestControllerpublic class TestController {    //    @CrossOrigin(origins = {"http://localhost:8081", "null"})    @RequestMapping("/hello")    public ResultData hello() {        System.out.println("4444");        HashMap<Object, Object> hashMap = new HashMap<>();        ArrayList<Object> list = new ArrayList<>();        hashMap.put("name","liu");        hashMap.put("pk","0000001");        list.add(hashMap);        ResultData resultData = new ResultData(CTPEnum.ok, list);        return resultData;    }

}

4.启动程序

5.发送请求

6.问题+解决

Resolved [org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation]

解决方法一：封装的返回类ResultData中没有加set个get方法，加上就可以了。

解决方法二：封装的返回类ResultData上加上@Data注解。

1.在pom.xml中加入lombok依赖

<dependency>    <groupId>org.projectlombok</groupId>    <artifactId>lombok</artifactId>    <version>1.18.4</version></dependency>

2.在ResultData类上加上@Data注解