JSON字符串转为对象

import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;


@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class MsgResult {
    @JsonProperty("user_id")
    private String userId;
    @JsonProperty("template_id")
    private String templateId;
    @JsonProperty("biz_card_no")
    private String bizCardNo;
    @JsonProperty("external_card_no")
    private String externalCardNo;
    @JsonProperty("success")
    private String success;
    @JsonProperty("error_code")
    private String errorCode;
    @JsonProperty("error_msg")
    private String errorMsg;
}

import com.alibaba.fastjson.JSON;

public class Test_05 {
    public static void main(String[] args) {
        String message = "{\n" +
                "\"user_id\":\"2088902351536970\",\n" +
                "\"template_id\":\"20200312000000000414103000300846\",\n" +
                "\"biz_card_no\":\"000001\",\n" +
                "\"external_card_no\":\"EXT0001\",\n" +
                "\"success\":\"true\",\n" +
                "\"error_code\":\"ILLEGAL_ARGUMENT\",\n" +
                "\"error_msg\":\"参数非法\"\n" +
                "}";
        MsgResult msgResult = JSON.parseObject(message, MsgResult.class);
        System.out.println(msgResult);
    }
}

运行结果：
MsgResult(userId=2088902351536970, templateId=20200312000000000414103000300846, bizCardNo=000001, externalCardNo=EXT0001, success=true, errorCode=ILLEGAL_ARGUMENT, errorMsg=参数非法)