mybatis逆向生成pom.xml文件
mybatis-generator是一款在使用mybatis框架时,自动1生成model,dao,mapper的工具,很大程度上减少了开发人员业务编码的时间。
mybatis逆向生成文件的关键jar包mybaties-generator-core,如果是Maven用户需要在pom.xml加入依赖
<build>
<plugins>
<plugin>
<groupId>org.mybaties.grenerator</groupId>
<artifactId>mybaties-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mybatis-connector-java</artifactId>
</dependency>
</dependencies>
<configuration>
<configurationFiles>mybatis-generator.xml</configurationFiles>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>
mybatis-generator.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="DB2Tables" targetRuntime="MyBatis3">
<!--将无用的功能注释掉,我们只保留自己所需要的-->
<!-- <classPathEntry location="/Program Files/IBM/SQLLIB/java/db2java.zip" />-->
<!--配置数据库连接的四要素-->
<jdbcConnection driverClass="COM.ibm.db2.jdbc.app.DB2Driver"
connectionURL="jdbc:db2:TEST"
userId="db2admin"
password="db2admin">
</jdbcConnection>
<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- 指定javaBean实体类的生成位置属性等,是按照数据库中表来生成 -->
<javaModelGenerator targetPackage="com.newtouch.bcl.entity" targetProject="sms-de/src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="true" />
<!-- 从数据库返回的值被清理前后的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- 指定映射文件生成的位置 -->
<sqlMapGenerator targetPackage="com.newtouch.bcl.dao" targetProject="sms-de/src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- 指定dao接口生成位置,mapper接口 -->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.newtouch.bcl.dao"
targetProject="sms-de/src/main/java">
<!-- enableSubPackages:是否让schema作为包的后缀 -->
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!-- table指定每一个表生成策略 -->
<!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是
实体类名-->
<table schema="DB2ADMIN" tableName="ALLTYPES" > </table>
</context>
</generatorConfiguration>
创建简单入口函数类
public class demo {
public static void main(String[] args) throws IOException,XMLParserException, InvalidConfigurationException, SQLException, InterruptedException{
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mybatis-generator.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
}
然后运行这个程序,可以看到程序已经按我们所要求的生成了相应的实体类,mapper映射文件和数据持久层Dao