Mybatis plus代码生成器

案例一

• demo为​​chenx/mybatisplus-demo​​
• ​​参考​​
• ​​案例​​
• 项目初始结构



• 数据库新建表



• 
  



• 项目配置



• 
  



• 启动CodeGenerator类中的main方式，输入表名，生成代码

案例二

• demo为​​chenx/mybatisplus-demo1​​
• ​​参考​​
• ​​案例​​
• 新建1个spring boot项目，导入如下依赖

点击查看详情

<dependencies>
    <!--自动生成代码依赖-->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-generator</artifactId>
        <version>3.5.1</version>
    </dependency>
    <!--freemarker模板和velocity模板依赖，后面配置的时候会2选其1-->
    <dependency>
        <groupId>org.freemarker</groupId>
        <artifactId>freemarker</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.velocity</groupId>
        <artifactId>velocity-engine-core</artifactId>
        <version>2.1</version>
    </dependency>
    <!--swagger依赖-->
    <dependency>
        <groupId>io.swagger</groupId>
        <artifactId>swagger-annotations</artifactId>
        <version>1.5.20</version>
    </dependency>
    <!--数据库驱动-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <!--mybatis-plus启动器-->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.4.3.4</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </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>
    </dependency>
</dependencies>

<build>
    <plugins>
        <!-- 自动打包-->
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <excludes>
                    <exclude>
                        <groupId>org.projectlombok</groupId>
                        <artifactId>lombok</artifactId>
                    </exclude>
                </excludes>
            </configuration>
        </plugin>
        <!-- maven编译 -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.1</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>3.1.0</version>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.22.1</version>
            <configuration>
                <skipTests>true</skipTests>
            </configuration>
        </plugin>
    </plugins>
</build>

• 配置application.properties

# mysql 8.xx
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.url=jdbc:mysql://192.168.0.102:3306/dbtest
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
# 配置日志
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

# 配置逻辑删除
# 全局逻辑删除的实体字段名(since 3.3.0,配置后可以忽略不配置步骤2)
# mybatis-plus.global-config.db-config.logic-delete-field=deleted
# 逻辑已删除值(默认为 1)
mybatis-plus.global-config.db-config.logic-delete-value=1
# 逻辑未删除值(默认为 0)
mybatis-plus.global-config.db-config.logic-not-delete-value=0

• 编写测试类



• 测试类中需要注意的配置



• 
  



• 新建数据库并任意新建几张表



• 右键运行，自动生成代码

案例三

• demo为​​chenx/mybatis-geneator​​
• ​​案例​​
• ​​修改配置​​



• 
  
• ​​指定对应的表名​​



• 
  
• ​​generatorConfig.xml的绝对路径​​



• 
  
• ​​配置application.yml​​



• 
  
• ​​运行MybatisGeneratorMain类自动生成代码​​



• 
  
• ​​如果希望实体类中不生成不生成xxxExample，需要在generatorConfig.xml中这样配置表名​​

  <table tableName="user" domainObjectName="User"
                enableCountByExample="false" enableUpdateByExample="false"
                enableDeleteByExample="false" enableSelectByExample="false"
                selectByExampleQueryId="false">
  </table>

• ​​参考​​