springboot处理统一返回json数据格式

第一步，写一个实体类JsonResultEntity，定义返回的参数

package com.bujiang.magic.common.utils;

public class JsonResultEntity {
    private Object data;
    private String message;
    private Integer code;

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }
}

第二步，写一个工具类ResponseEntity

package com.bujiang.magic.common.utils;

public class JsonResultUtils{

    public static JsonResultEntity success(Object object) {
        JsonResultEntity jsonResult = new JsonResultEntity();
        jsonResult.setData(object);
        jsonResult.setCode(200);
        jsonResult.setMessage("success");
        return jsonResult;
    }

    public static JsonResultEntity success(Object object, Integer code, String message) {
        JsonResultEntity jsonResult = new JsonResultEntity();
        jsonResult.setData(object);
        jsonResult.setCode(code);
        jsonResult.setMessage(message);
        return jsonResult;
    }

    public static JsonResultEntity success() {
        return success(null);
    }

    public static JsonResultEntity error(Integer code, String message) {
        JsonResultEntity jsonResult = new JsonResultEntity();
        jsonResult.setCode(code);
        jsonResult.setMessage(message);
        return jsonResult;
    }

    public static JsonResultEntity success(Integer code, String message) {
        JsonResultEntity jsonResult = new JsonResultEntity();
        jsonResult.setCode(code);
        jsonResult.setMessage(message);
        return jsonResult;
    }

}

第三步，测试

DemoController:

@ApiOperation(value = "测试统一json返回", notes = "")
@RequestMapping(value = "testJsonReturn", method = RequestMethod.POST)
public ResponseEntity<JsonResultEntity> testJsonReturn() {
    return userService.testJsonReturn();
}

UserService:

/**
 * 测试json统一返回数据
 * @return
 */
ResponseEntity<JsonResultEntity> testJsonReturn();

UserServiceImpl

@Override
public ResponseEntity<JsonResultEntity> testJsonReturn() {
    Map<String, String> map = new HashMap<>();
    map.put("test", "test is success");
    return ResponseEntity.ok(JsonResultUtils.success(map));
}

结果显示成功