1.前言
有新的表之后,使用mybatis-generator工具生成entity、dao和mapper.xml还是挺方便的。
2.代码
(1)mysql创建xm_product库和表product(库和表与下面xml中配置的一样就好)
(2)pom.xml添加内容,最下边添加plugin
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<!--Mybatis-generator插件,用于自动生成Mapper和POJO-->
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<!--配置文件的位置-->
<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>
</dependencies>
</plugin>
</plugins>
</build>
(3)添加generatorConfig.xml,看一下注释还挺清晰的
<?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>
<!-- 本地数据库驱动程序jar包的全路径 -->
<classPathEntry location="F:\repository\mysql\mysql-connector-java\5.1.44\mysql-connector-java-5.1.44.jar"/>
<context id="context" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressAllComments" value="true"/>
<property name="suppressDate" value="true"/>
</commentGenerator>
<!-- 数据库的相关配置 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://127.0.0.1:3306/xm_product?useUnicode=true&characterEncoding=utf-8"
userId="root"
password="root"/>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- 实体类生成的位置 -->
<javaModelGenerator targetPackage="xm.service.product.entity" targetProject="src/main/java">
<property name="enableSubPackages" value="false"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!-- *Mapper.xml 文件的位置 -->
<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
<property name="enableSubPackages" value="false"/>
</sqlMapGenerator>
<!-- Mapper 接口文件的位置,注意type的值这里是熟悉的xml格式 -->
<!--
type:选择怎么生成mapper接口(在MyBatis3/MyBatis3Simple下):
1,ANNOTATEDMAPPER:会生成使用Mapper接口+Annotation的方式创建(SQL生成在annotation中),不会生成对应的XML;
2,MIXEDMAPPER:使用混合配置,会生成Mapper接口,并适当添加合适的Annotation,但是XML会生成在XML中;
3,XMLMAPPER:会生成Mapper接口,接口完全依赖XML;
注意,如果context是MyBatis3Simple:只支持ANNOTATEDMAPPER和XMLMAPPER
-->
<javaClientGenerator targetPackage="xm.service.product.persistence.dao" targetProject="src/main/java" type="XMLMAPPER">
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<!-- 相关表的配置 -->
<table tableName="product" enableCountByExample="false" enableDeleteByExample="false" enableSelectByExample="false"
enableUpdateByExample="false"/>
</context>
</generatorConfiguration>
(4)运行maven生成文件,idea右侧窗口,如下图,点击一下就好。