1.在pom.xml文件中配置mybatis-generator-maven-plugin插件:
<!-- 自動生成mybatis代碼 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<configurationFile>src/main/resources/generator/generator.xml</configurationFile>
<overwrite>true</overwrite>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>3.4.0</version>
</dependency>
</dependencies>
</plugin>
2.在項目resources下創建generator文件夾,添加配置文件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>
<properties resource="jdbc.properties"></properties>
<!-- 這裏記錄了數據庫連接 -->
<context defaultModelType="flat" id="mysql" targetRuntime="MyBatis3">
<!-- 生成的Java文件的編碼 -->
<property name="javaFileEncoding" value="UTF-8"/>
<!-- 生成根Mapper,用戶可以看後邊代碼 -->
<plugin type="tk.mybatis.mapper.generator.MapperPlugin">
<property name="mappers" value="tk.mybatis.mapper.common.BaseMapper"/>
</plugin>
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="${jdbc.url}"
userId="${jdbc.username}" password="${jdbc.password}">
</jdbcConnection>
<!-- 默認false,把JDBC DECIMAL 和 NUMERIC 類型解析爲 Integer,爲 true時把JDBC DECIMAL 和
NUMERIC 類型解析爲java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="true" />
</javaTypeResolver>
<javaModelGenerator targetPackage="com.pcgrw.weblog.model.entity"
targetProject="src/main/java">
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<sqlMapGenerator targetPackage="mapper"
targetProject="src/main/resources">
</sqlMapGenerator>
<!--
1,ANNOTATEDMAPPER:會生成使用Mapper接口+Annotation的方式創建(SQL生成在annotation中),不會生成對應的XML;
2,XMLMAPPER:會生成Mapper接口,接口完全依賴XML;
-->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.pcgrw.weblog.mapper"
targetProject="src/main/java">
</javaClientGenerator>
<table tableName="weblog_attachment" domainObjectName="Attachment" selectByExampleQueryId="false" enableSelectByExample="false" enableDeleteByExample="false" enableUpdateByExample="false" enableCountByExample="false" ></table>
</context>
</generatorConfiguration>
注意: 在配置文件中數據庫連接我引用的jdbc.properties文件中的配置信息,你也可以自己手動寫死。