一 配置pom.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.xingxue.genernater</groupId> <artifactId>genernater-mybatis</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <!-- 配置 mybatis 核心依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.5</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.44</version> </dependency> <!-- 导入log4j 日志包 --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.21</version> </dependency> </dependencies> <build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.xml</include> <include>**/*.properties</include> </includes> <filtering>false</filtering> </resource> </resources> <plugins> <!--逆向工程的插件--> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <configuration> <verbose>true</verbose> <overwrite>true</overwrite> </configuration> </plugin> </plugins> </build> </project>
二 配置generator.properties
//配置generator.properties jdbc.connectionURL=jdbc:mysql:///xingxue27 jdbc.userId=root jdbc.password=root jdbc.driverClass=com.mysql.jdbc.Driver
三 配置 generatorConfig.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <!--导入属性配置--> <properties resource="generator.properties"></properties> <!--指定特定数据库的jdbc驱动jar包的位置--> <!--路径找到自己的安装路径-->//要改的地方 <classPathEntry location="C:/Users/Administrator/.m2/repository/mysql/mysql-connector-java/5.1.44/mysql-connector-java-5.1.44.jar"/> <context id="default" targetRuntime="MyBatis3"> <!-- optional,旨在创建class时,对注释进行控制 --> <commentGenerator> <property name="suppressDate" value="true"/> <property name="suppressAllComments" value="true"/> </commentGenerator> <!--jdbc的数据库连接 --> <jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}" userId="${jdbc.userId}" password="${jdbc.password}"> </jdbcConnection> <!-- 非必需,类型处理器,在数据库类型和java类型之间的转换控制--> <javaTypeResolver> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <!-- Model模型生成器,用来生成含有主键key的类,记录类 以及查询Example类 targetPackage 指定生成的model生成所在的包名 targetProject 指定在该项目下所在的路径 --> <javaModelGenerator targetPackage="com.xingxue.mybatis.model"//要改的地方 targetProject="src/main/java"> <!-- 是否允许子包,即targetPackage.schemaName.tableName --> <property name="enableSubPackages" value="false"/> <!-- 是否对model添加 构造函数 --> <property name="constructorBased" value="true"/> <!-- 是否对类CHAR类型的列的数据进行trim操作 --> <property name="trimStrings" value="true"/> <!-- 建立的Model对象是否 不可改变 即生成的Model对象不会有 setter方法,只有构造方法 --> <property name="immutable" value="false"/> </javaModelGenerator> <!--Mapper映射文件生成所在的目录 为每一个数据库的表生成对应的SqlMap文件 --> <sqlMapGenerator targetPackage="com.xingxue.mybatis.mapper"//要改的地方
targetProject="src/main/java"> <property name="enableSubPackages" value="false"/> </sqlMapGenerator><!-- 客户端代码,生成易于使用的针对Model对象和XML配置文件 的代码 type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 --> <javaClientGenerator targetPackage="com.xingxue.mybatis.mapper"//要改的地方 targetProject="src/main/java" type="XMLMAPPER"> <property name="enableSubPackages" value="true"/> </javaClientGenerator> <!--数据库的表名--> <table tableName="tb_class" domainObjectName="ClassModel"//要改的地方 enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"> </table> </context></generatorConfiguration>
四 帮助工具
package com.xingxue.mybatis.util; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; public class SessionUtil { private static final SqlSessionFactory factory; static { try { factory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("SqlMapConfig.xml")); }catch (Exception e){ throw new RuntimeException(e); } } public static SqlSessionFactory getFactory(){ return factory; } public static SqlSession getSession(){ return factory.openSession(); } }
点击插件 自动生成 mapper 和 model
最后进行测试