mybatis-generator 概述
MyBatis官方提供了逆向工程 mybatis-generator,可以針對數據庫表自動生成MyBatis執行所需要的代碼(如Mapper.java、Mapper.xml、POJO)。mybatis-generator 有三種用法:命令行、eclipse插件、maven插件。
pom.xml中配置plugin
<build>
<plugins>
<!-- mybatis-generator -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<!-- mybatis-generator的配置文件,根據情況調整位置 -->
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
<executions>
<execution>
<id>Generate MyBatis Artifacts</id>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
generatorConfig.xml配置文件
<?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>
<!--導入jdbc屬性配置 -->
<properties resource="jdbc2.properties"/>
<!-- targetRuntime:目標代碼屬性(MyBatis3Simple:基本MyBatis的CURD,MyBatis3:功能更強大的MyBatis的CURD)-->
<context id="MysqlContext" targetRuntime="MyBatis3" defaultModelType="flat">
<commentGenerator>
<!-- 是否去除自動生成的註釋 true:是 : false:否 -->
<property name="suppressAllComments" value="true"/>
<property name="suppressDate" value="true"/>
</commentGenerator>
<!-- 數據庫鏈接URL、用戶名、密碼 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="${jdbc.url}"
userId="${jdbc.username}"
password="${jdbc.password}">
</jdbcConnection>
<!-- 生成模型的包名和位置 -->
<javaModelGenerator targetPackage="com.example.demo.entity" targetProject="src/main/java" />
<!-- 生成映射文件的包名和位置 -->
<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"/>
<!-- 生成DAO的包名和位置-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.example.demo.mapper" targetProject="src/main/java"/>
<!-- 要生成的表,tableName是數據庫中的表名或視圖名,domainObjectName是實體類名-->
<table tableName="jdwx" domainObjectName="JdwxEntity" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"/>
</context>
</generatorConfiguration>
運行Mave 插件生成代碼