Mybatis Generator逆向工程的使用
一.在 idea 中使用 mybatis generator 逆向工程
1.在IDEA上创建maven工程。
2.在pom.xml中配置MyBatis逆向工程插件
<!--MyBatis自动生成工具插件--> <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>
3..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>
<context id="mybatisGenerator" targetRuntime="MyBatis3">
<commentGenerator>
<!-- 是否去除自动生成的注释 true:是 : false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--数据库连接的信息:驱动类、连接地址、用户名、密码 -->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/e3mall"
userId="root"
password="root">
</jdbcConnection>
<!-- 默认false,把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer,为 true时把JDBC DECIMAL 和
NUMERIC 类型解析为java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="true" />
</javaTypeResolver>
<!-- targetProject:生成PO类的位置 -->
<javaModelGenerator targetPackage="com.yp.manager.entity"
targetProject="/Users/mryuan/IdeaProjects/creditRouter-tyr/onlineShop/onlineShop-mybatis-generator/src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
<!-- 从数据库返回的值被清理前后的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- targetProject:mapper映射文件生成的位置 -->
<sqlMapGenerator targetPackage="com.yp.manager.mapper"
targetProject="/Users/mryuan/IdeaProjects/creditRouter-tyr/onlineShop/onlineShop-mybatis-generator/src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- targetPackage:mapper接口生成的位置 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.yp.manager.dao"
targetProject="/Users/mryuan/IdeaProjects/creditRouter-tyr/onlineShop/onlineShop-mybatis-generator/src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!-- 指定数据库表 -->
<table tableName="tb_content"></table>
<table tableName="tb_content_category"></table>
<table tableName="tb_item"></table>
<table tableName="tb_item_cat"></table>
<table tableName="tb_item_desc"></table>
<table tableName="tb_item_param"></table>
<table tableName="tb_item_param_item"></table>
<table tableName="tb_order"></table>
<table tableName="tb_order_item"></table>
<table tableName="tb_order_shipping"></table>
<table tableName="tb_user"></table>
<!-- 有些表的字段需要指定java类型
<table schema="" tableName="">
<columnOverride column="" javaType="" />
</table> -->
</context>
</generatorConfiguration>
4.执行Java 类
package com.yp.manager; import org.mybatis.generator.api.MyBatisGenerator; import org.mybatis.generator.config.Configuration; import org.mybatis.generator.config.xml.ConfigurationParser; import org.mybatis.generator.internal.DefaultShellCallback; import java.io.File; import java.util.ArrayList; import java.util.List; /** * desc * * @Author 袁朋 * @Date 2019/3/5 */ public class Generator { public void generator() throws Exception{ List<String> warnings = new ArrayList<String>(); boolean overwrite = true; /**指向逆向工程配置文件*/ File configFile = new File("/Users/mryuan/IdeaProjects/creditRouter-tyr/onlineShop/onlineShop-mybatis-generator/src/main/resources/generationConfig.xml"); ConfigurationParser parser = new ConfigurationParser(warnings); Configuration config = parser.parseConfiguration(configFile); DefaultShellCallback callback = new DefaultShellCallback(overwrite); MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings); myBatisGenerator.generate(null); } public static void main(String[] args) throws Exception { try { Generator generatorSqlmap = new Generator(); generatorSqlmap.generator(); } catch (Exception e) { e.printStackTrace(); } } }