@TableField(“user_name”)
private String userName;

/*
 Navicat Premium Data Transfer
 Source Server         : 本地庫
 Source Server Type    : MySQL
 Source Server Version : 80017
 Source Host           : localhost:3306
 Source Schema         : mp
 Target Server Type    : MySQL
 Target Server Version : 80017
 File Encoding         : 65001
 Date: 23/08/2022 22:19:37
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for tb_user
-- ----------------------------
DROP TABLE IF EXISTS `tb_user`;
CREATE TABLE `tb_user`  (
  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
  `user_name` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '用戶名',
  `password` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '密碼',
  `name` varchar(30) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '姓名',
  `age` int(11) NULL DEFAULT NULL COMMENT '年齡',
  `email` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '郵箱',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of tb_user
-- ----------------------------
INSERT INTO `tb_user` VALUES (1, 'zhangsan', '123456', '張三', 18, 'test1@qq.com');
INSERT INTO `tb_user` VALUES (2, 'lisi', '123456', '李四', 20, 'test2@qq.com');
INSERT INTO `tb_user` VALUES (3, 'wangwu', '123456', '王五', 22, 'test3@qq,com');
INSERT INTO `tb_user` VALUES (4, 'zhaoliu', '123456', '趙六', 24, 'test4@qq.com');
SET FOREIGN_KEY_CHECKS = 1;

//指定數(shù)據(jù)庫字段名稱
@TableField(value = "email")

@TableField(exist = false)

// 查詢的時(shí)候不返回該字段的值 默認(rèn)為true(返回)@TableField(select=false)