mybatis逆向工程可以通过数据库的表,直接生成对应的实体类以及mapper.java mapper.xml文件,可以大大提高我们的开发效率
创建逆向工程的步骤:
1. 创建maven项目
2. 在pom.xml核心配置文件中加入mybatis逆向工程插件
<build>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
</build>
3.为项目添加依赖 -> 数据库驱动依赖
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
</dependencies>
4.创建逆向工程的配置文件 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>
<!-- 配置mysql 驱动jar包路径.用了绝对路径 -->
<classPathEntry
location="E:\maven\LocalWareHouse\mysql\mysql-connector-java\5.1.34\mysql-connector-java-5.1.34.jar" />
<context id="scm_mysql_tables" targetRuntime="MyBatis3">
<!-- 防止生成的代码中有很多注释,加入下面的配置控制 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
<property name="suppressDate" value="true" />
</commentGenerator>
<!-- 数据库连接 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/easybuy?characterEncoding=UTF-8"
userId="root"
password="root">
</jdbcConnection>
<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- 数据表对应的model层 -->
<javaModelGenerator targetPackage="com.hd.entity"
targetProject="src">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- sql mapper 映射配置文件 -->
<sqlMapGenerator targetPackage="com.hd.mapper"
targetProject="src">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!-- mybatis3中的mapper接口 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.hd.mapper"
targetProject="src">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!-- 数据表进行生成操作 schema:相当于库名; tableName:表名;
domainObjectName:对应的DO
-->
<table schema="mybatis" tableName="easybuy_news" domainObjectName="News"
enableCountByExample="false" enableUpdateByExample="false"
enableDeleteByExample="false" enableSelectByExample="false"
selectByExampleQueryId="false">
</table>
</context>
</generatorConfiguration>
5.双击下图对应位置,自动生成代码