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MyBatis-Plus（简称 MP）是一个 MyBatis 的增强工具，在 MyBatis 的基础上只做增强不做改变，为简化开发、提高效率而生。
mybatis_plus_db.sql
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` bigint(0) NOT NULL COMMENT '主键ID',
`name` varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '姓名',
`age` int(0) NULL DEFAULT NULL COMMENT '年龄',
`email` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '邮箱',
`version` int(0) NULL DEFAULT 1 COMMENT '乐观锁',
`deleted` int(1) UNSIGNED ZEROFILL NULL DEFAULT NULL COMMENT '逻辑删除',
`create_time` timestamp(0) NOT NULL DEFAULT CURRENT_TIMESTAMP(0) COMMENT '创建时间',
`update_time` timestamp(0) NOT NULL DEFAULT CURRENT_TIMESTAMP(0) ON UPDATE CURRENT_TIMESTAMP(0) COMMENT '更新时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
SET FOREIGN_KEY_CHECKS = 1;
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
application.yml配置文件中添加 mysql 数据库的相关配置：# 数据库连接配置
spring:
datasource:
username: root
password: "00000000"
url: jdbc:mysql://localhost:3306/mybatis_plus_db?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
driver-class-name: com.mysql.cj.jdbc.Driver
# 日志配置
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
global-config:
db-config:
logic-delete-field: deleted # 全局逻辑删除的实体字段名
logic-delete-value: 1 # 逻辑已删除值(默认为 1)
logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)
@MapperScan注解，扫描 Mapper 文件夹：@MapperScan("com.example.mybatisplus.mapper") // 扫描mapper文件夹
@SpringBootApplication
public class MybatisPlusApplication {
public static void main(String[] args) {
SpringApplication.run(MybatisPlusApplication.class, args);
}
}
@MapperScan("com.example.mybatisplus.mapper")
@Configuration
public class MyBatisPlusConfig {
/**
* 乐观锁插件
*/
@Bean
public OptimisticLockerInterceptor optimisticLockerInterceptor() {
return new OptimisticLockerInterceptor();
}
/**
* 分页插件
*/
@Bean
public PaginationInterceptor paginationInterceptor() {
return new PaginationInterceptor();
}
}
User.java（此处使用了 Lombok 简化代码）@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
private Long id;
private String name;
private Integer age;
private String email;
}
UserMapper.java
public interface UserMapper extends BaseMapper<User> {
}
MyMetaObjectHandler：@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
/**
* 插入数据时的填充策略
*/
@Override
public void insertFill(MetaObject metaObject) {
log.info("start insert fill ....");
this.strictInsertFill(metaObject, "createTime", LocalDateTime.class, LocalDateTime.now()); // 起始版本 3.3.0(推荐使用)
this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now()); // 起始版本 3.3.0(推荐使用)
}
/**
* 更新数据时的填充策略
*/
@Override
public void updateFill(MetaObject metaObject) {
log.info("start update fill ....");
this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now()); // 起始版本 3.3.0(推荐)
}
}
@SpringBootTest
public class BasisFunctionTests {
@Autowired
private UserMapper userMapper;
/**
* 测试查询所有
*/
@Test
void test01() {
List<User> users = userMapper.selectList(null);
users.forEach(System.out::println);
}
/**
* 测试插入
*/
@Test
void test02() {
User user = new User();
user.setName("Ryu");
user.setAge(23);
user.setEmail("test6@baomidou.com");
userMapper.insert(user);
}
/**
* 测试更新
*/
@Test
void test03() {
User user = new User();
user.setId(5L);
user.setAge(70);
userMapper.updateById(user);
}
/**
* 测试乐观锁成功情况
*/
@Test
void test04() {
User user = userMapper.selectById(1292990187323412482L);
user.setName("FeiLong");
userMapper.updateById(user);
}
/**
* 测试乐观锁失败情况
*/
@Test
void test05() {
// 模拟线程1
User user1 = userMapper.selectById(1292990187323412482L);
user1.setName("Ryu1");
// 模拟线程2
User user2 = userMapper.selectById(1292990187323412482L);
user2.setName("Ken1");
// 模拟线程2插队
userMapper.updateById(user2);
userMapper.updateById(user1);
}
/**
* 测试查询
*/
@Test
void test06() {
User user = userMapper.selectById(1293208949624582146L);
System.out.println(user);
}
/**
* 测试批量查询
*/
@Test
void test07() {
User user = userMapper.selectById(1292990187323412482L);
List<User> users = userMapper.selectBatchIds(Arrays.asList(1292990187323412482L, 1293193158871158786L));
System.out.println(user);
users.forEach(System.out::println);
}
/**
* 测试条件查询
*/
@Test
void test08() {
HashMap<String, Object> map = new HashMap<>();
map.put("name", "Ryu");
List<User> users = userMapper.selectByMap(map);
users.forEach(System.out::println);
}
/**
* 测试分页查询
*/
@Test
void Test09() {
Page<User> page = new Page<>(1, 5);
Page<User> userPage = userMapper.selectPage(page, null);
userPage.getRecords().forEach(System.out::println);
System.out.println(userPage.getSize());
System.out.println(userPage.getTotal());
}
/**
* 测试删除
*/
@Test
void Test10() {
int id = userMapper.deleteById(1293208949624582146L);
System.out.println(id);
}
}
@SpringBootTest
public class WrapperTest {
@Autowired
private UserMapper userMapper;
@Test
void test01() {
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.isNotNull("name") // name 不为 null
.isNotNull("email") // email 不为 null
.ge("age", 12); // age 大于 12
List<User> users = userMapper.selectList(wrapper);
users.forEach(System.out::println);
}
@Test
void test02() {
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.eq("name", "Ken");
User user = userMapper.selectOne(wrapper); // 查询一条记录
System.out.println(user);
}
@Test
void test03() {
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.between("age", 20, 30); // name 大于 20 小于 30
Integer count = userMapper.selectCount(wrapper);
System.out.println(count);
}
@Test
void test04() {
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.notLike("name", "e") // name 不包含 e
.likeRight("name", "R") // name 以 R 开头
.likeLeft("name", "u"); // name 以 u 结尾
List<Map<String, Object>> maps = userMapper.selectMaps(wrapper);
maps.forEach(System.out::println);
}
@Test
void test05() {
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.inSql("id", "select id from user where id > 0"); // 子查询
List<Object> objects = userMapper.selectObjs(wrapper);
objects.forEach(System.out::println);
}
@Test
void test06() {
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.orderByDesc("id"); // 根据 id 降序
List<User> users = userMapper.selectList(wrapper);
users.forEach(System.out::println);
}
}
generator_db.sql
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for blog
-- ----------------------------
DROP TABLE IF EXISTS `blog`;
CREATE TABLE `blog` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`bid` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '博客id',
`title` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '博客标题',
`content` longtext CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '博客内容',
`sort` int(0) NOT NULL DEFAULT 0 COMMENT '排序 0 普通 1 置顶',
`views` int(0) NOT NULL DEFAULT 0 COMMENT '浏览量',
`author_id` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '作者id',
`author_name` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '作者名',
`author_avatar` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '作者头像',
`category_id` int(0) NOT NULL COMMENT '问题分类id',
`category_name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '问题分类名称',
`gmt_create` datetime(0) NOT NULL COMMENT '创建时间',
`gmt_update` datetime(0) NOT NULL COMMENT '修改时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 30 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for blog_category
-- ----------------------------
DROP TABLE IF EXISTS `blog_category`;
CREATE TABLE `blog_category` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`category` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '博客分类',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 10 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for comment
-- ----------------------------
DROP TABLE IF EXISTS `comment`;
CREATE TABLE `comment` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`comment_id` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '评论唯一id',
`topic_category` int(0) NOT NULL COMMENT '1博客 2问答',
`topic_id` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '评论主题id',
`user_id` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '评论者id',
`user_name` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '评论者昵称',
`user_avatar` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '评论者头像',
`content` longtext CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '评论内容',
`gmt_create` datetime(0) NOT NULL COMMENT '评论创建时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 137 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for download
-- ----------------------------
DROP TABLE IF EXISTS `download`;
CREATE TABLE `download` (
`dname` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '资源名',
`ddesc` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '资源链接',
`dcode` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '提取码'
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for invite
-- ----------------------------
DROP TABLE IF EXISTS `invite`;
CREATE TABLE `invite` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`code` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '邀请码',
`uid` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '用户id',
`status` int(0) NOT NULL DEFAULT 0 COMMENT '状态 0 未使用 1 使用',
`active_time` datetime(0) NULL DEFAULT NULL COMMENT '激活时间',
`gmt_create` datetime(0) NOT NULL COMMENT '创建时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1217 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for question
-- ----------------------------
DROP TABLE IF EXISTS `question`;
CREATE TABLE `question` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`qid` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '问题id',
`title` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '问题标题',
`content` longtext CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '问题内容',
`status` int(0) NOT NULL DEFAULT 0 COMMENT '状态 0 未解决 1 已解决',
`sort` int(0) NOT NULL DEFAULT 0 COMMENT '排序 0 普通 1 置顶',
`views` int(0) NOT NULL DEFAULT 0 COMMENT '浏览量',
`author_id` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '作者id',
`author_name` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '作者名',
`author_avatar` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '作者头像',
`category_id` int(0) NOT NULL COMMENT '问题分类id',
`category_name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '问题分类名称',
`gmt_create` datetime(0) NOT NULL COMMENT '创建时间',
`gmt_update` datetime(0) NOT NULL COMMENT '修改时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 35 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for question_category
-- ----------------------------
DROP TABLE IF EXISTS `question_category`;
CREATE TABLE `question_category` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`category` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '问题分类',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 15 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for say
-- ----------------------------
DROP TABLE IF EXISTS `say`;
CREATE TABLE `say` (
`id` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '唯一id',
`title` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '标题',
`content` varchar(5000) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '内容',
`gmt_create` datetime(0) NOT NULL COMMENT '时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '自增id',
`uid` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户编号',
`role_id` int(0) NOT NULL COMMENT '角色编号',
`username` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户名',
`password` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '密码',
`avatar` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '/images/avatar/avatar-1.jpg' COMMENT '头像',
`login_date` datetime(0) NOT NULL COMMENT '登录时间',
`gmt_create` datetime(0) NOT NULL COMMENT '创建时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 840 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for user_donate
-- ----------------------------
DROP TABLE IF EXISTS `user_donate`;
CREATE TABLE `user_donate` (
`uid` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户id',
`donate_json` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '赞赏二维码信息'
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for user_info
-- ----------------------------
DROP TABLE IF EXISTS `user_info`;
CREATE TABLE `user_info` (
`uid` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户id',
`nickname` varchar(80) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '用户昵称',
`realname` varchar(80) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '真实姓名',
`qq` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT 'QQ',
`wechat` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT 'WeChat',
`email` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '邮箱',
`phone` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '手机',
`work` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '工作',
`address` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '地址',
`hobby` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '爱好',
`intro` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '自我介绍'
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for user_role
-- ----------------------------
DROP TABLE IF EXISTS `user_role`;
CREATE TABLE `user_role` (
`id` int(0) NOT NULL AUTO_INCREMENT COMMENT '角色编号',
`name` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '角色名称',
`description` varchar(500) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '无描述...' COMMENT '角色描述',
`gmt_create` datetime(0) NOT NULL COMMENT '创建时间',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 3 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
SET FOREIGN_KEY_CHECKS = 1;
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
application.yml配置文件中添加 mysql 数据库的相关配置：# 数据库连接配置
spring:
datasource:
username: root
password: "00000000"
url: jdbc:mysql://localhost:3306/generator_db?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
driver-class-name: com.mysql.cj.jdbc.Driver
# 日志配置
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
global-config:
db-config:
logic-delete-field: deleted # 全局逻辑删除的实体字段名
logic-delete-value: 1 # 逻辑已删除值(默认为 1)
logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)
@MapperScan("com.example.mybatisplus.mapper")
@Configuration
public class MyBatisPlusConfig {
/**
* 乐观锁插件
*/
@Bean
public OptimisticLockerInterceptor optimisticLockerInterceptor() {
return new OptimisticLockerInterceptor();
}
/**
* 分页插件
*/
@Bean
public PaginationInterceptor paginationInterceptor() {
return new PaginationInterceptor();
}
}
public class CodeGenerator {
/**
* 读取控制台内容
*/
public static String scanner(String tip) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入" + tip + "：");
if (scanner.hasNext()) {
String ipt = scanner.next();
if (ipt != null) {
return ipt;
}
}
throw new MybatisPlusException("请输入正确的" + tip + "！");
}
public static void main(String[] args) {
// 代码生成器
AutoGenerator mpg = new AutoGenerator();
// 全局配置
GlobalConfig gc = new GlobalConfig();
// 获取项目路径
String projectPath = System.getProperty("user.dir");
// 生成文件的输出目录
gc.setOutputDir(projectPath + "/src/main/java");
// 开发人员
gc.setAuthor("SongYu");
// 是否打开输出目录
gc.setOpen(false);
// 是否覆盖已有文件
gc.setFileOverride(false);
// 去除 Service 的 I 前缀
gc.setServiceName("%sService");
// 指定生成的主键的ID类型
gc.setIdType(IdType.ASSIGN_ID);
// 时间类型对应策略
gc.setDateType(DateType.TIME_PACK);
// 开启 swagger2 模式
gc.setSwagger2(true);
mpg.setGlobalConfig(gc);
// 数据源配置
DataSourceConfig dsc = new DataSourceConfig();
// 数据库类型
dsc.setDbType(DbType.MYSQL);
// 驱动连接的URL
dsc.setUrl("jdbc:mysql://localhost:3306/generator_db?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai");
// 驱动名称
dsc.setDriverName("com.mysql.cj.jdbc.Driver");
// 数据库连接用户名
dsc.setUsername("root");
// 数据库连接密码
dsc.setPassword("00000000");
mpg.setDataSource(dsc);
// 包配置
PackageConfig pc = new PackageConfig();
// 父包模块名
pc.setModuleName(scanner("模块名"));
// 父包名
pc.setParent("com.example.codegenerator");
// Entity包名
pc.setEntity("pojo");
// Mapper包名
pc.setMapper("mapper");
// Service包名
pc.setService("service");
// Controller包名
pc.setController("controller");
mpg.setPackageInfo(pc);
// 策略配置
StrategyConfig strategy = new StrategyConfig();
// 设置需要映射的表名
strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
// 数据库表映射到实体的命名策略
strategy.setNaming(NamingStrategy.underline_to_camel);
// 数据库表字段映射到实体的命名策略
strategy.setColumnNaming(NamingStrategy.underline_to_camel);
// 【实体】是否为lombok模型
strategy.setEntityLombokModel(true);
// 生成 @RestController 控制器
strategy.setRestControllerStyle(true);
// 自动填充配置
TableFill gmtCreate = new TableFill("gmt_create", FieldFill.INSERT);
TableFill gmtModified = new TableFill("gmt_create", FieldFill.INSERT_UPDATE);
ArrayList<TableFill> tableFills = new ArrayList<>();
tableFills.add(gmtCreate);
tableFills.add(gmtModified);
strategy.setTableFillList(tableFills);
// 乐观锁属性名称
strategy.setVersionFieldName("version");
// 驼峰转连字符
strategy.setControllerMappingHyphenStyle(true);
mpg.setStrategy(strategy);
// 执行代码生成器
mpg.execute();
}
}
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