前端传的数据格式如下：

{"data":[{"questionId":"3","userId":"1","questionTypeId":"1","isRight":"1","answer":"A","myAnswer":"A"},
{"questionId":"2","userId":"1","questionTypeId":"2","isRight":"1","answer":"B","myAnswer":"D"}]}

后台接收代码：

    @PostMapping("/addPracticeDirectedAnswer")public ResultBody<Question> addPracticeDirectedAnswer(@RequestBody  Map<String, Object> paramMap , @RequestParam("token") String token) {//获取登录人信息if(null != paramMap){String jsonString = JSONObject.toJSONString(paramMap);JSONObject jsonObject  = JSON.parseObject(jsonString);String data = jsonObject.getString("data");List<QuestionHistoryAnswer> list = JSONObject.parseArray(data, QuestionHistoryAnswer.class);}return ResultBody.ok().data(null);}

或者通过JSONObject 对象接收

    @PostMapping("/addPracticeDirectedAnswer")public ResultBody<Question> addPracticeDirectedAnswer(@RequestBody JSONObject obj , @RequestParam("token") String token) {//获取登录人信息if(null != obj){String jsonString = obj.toJSONString(); JSONObject jsonObject  = JSON.parseObject(jsonString);String data = jsonObject.getString("data");List<QuestionHistoryAnswer> list = JSONObject.parseArray(data, QuestionHistoryAnswer.class); }return ResultBody.ok().data(null);}

实体类参数

@Data
public class QuestionHistoryAnswer {private int examPaperId;private int questionId;private Date time;private String answer;private String myAnswer;private boolean isRight;private int questionTypeId;private int pointId;private int userId;private String createTime;private String updateTime;private String pointName;private int fieldId;private String fieldName;private String questionTypeName;
}

接收数据后的转换截图