Myeclipse中Mybatis Generator自动创建代码总结

桃扇骨 2022-09-28 11:42 192阅读 0赞

学习SSM中要写大量的配置文件和同样格式的文件, 就了解到了 Mybatis Generator 在这里做个总结

Myeclipse 中安装mybatis插件和使用:

一、首先下载和安装插件

1、Mybatis Generator 的下载地址：http://download.csdn.net/download/shayboke/9776906;

2、复制插件包中的features和plugins放到myeclipse的安装目录下的 dropins 文件夹下面;

3、重启 Myeclipse 然后在 File->New->other 搜索 mybatis 如果有，说明成功了;

二、工程目录下建立generator的配置文件

1、在创建配置文件的资源文件下右击,New->other  选择 Mybatis Generator Configuration File 双击,创建 generatorConfig.xml;

2、然后就是对 generatorConfig.xml的配置

<?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" />
    	
    	<classPathEntry location="${mysql.classPath}" />
    	
    	<context id="Mysql" targetRuntime="MyBatis3">
    		  
    		<commentGenerator>
    			
    			<property name="suppressDate" value="true" />
    			
    			<property name="suppressAllComments" value="true" />
    		</commentGenerator>
    		
    		<jdbcConnection driverClass="${driver}"
    			connectionURL="${url}" userId="${username}"
    			password="${password}">
    		</jdbcConnection>
    		  
    		<javaTypeResolver>
    			 
    			<property name="forceBigDecimals" value="false" />
    		</javaTypeResolver>
    		 
    		<javaModelGenerator targetPackage="com.shayboke.user.pojo"
    			targetProject="src/main/java">
    			
    			<property name="constructorBased" value="false"/>
    			
    			<property name="enableSubPackages" value="false" />
    			
    			<property name="trimStrings" value="true" />
    		</javaModelGenerator>
    		
    		<sqlMapGenerator targetPackage="com.shayboke.user.mapper"
    			targetProject="src/main/java">
    			<property name="enableSubPackages" value="false" />
    		</sqlMapGenerator>
    		
    		<javaClientGenerator type="XMLMAPPER"
    			targetPackage="com.shayboke.user.dao" targetProject="src/main/java">
    			<property name="enableSubPackages" value="false" />
    		</javaClientGenerator>
    		
    		<table tableName="t_user" domainObjectName="User"
    			   enableCountByExample="false" enableUpdateByExample="false"
    			   enableDeleteByExample="false" enableSelectByExample="false"
    			   selectByExampleQueryId="false">
    			<generatedKey column="id" sqlStatement="Mysql" identity="true" />	
    		</table>
    	</context>
    </generatorConfiguration>

3、运行，根据配置文件生成文件

首先要引入 mybatis-generator-core-1.3.4的jar包

package com.shayboke.main;
    
    import java.io.File;  
    import java.io.IOException;  
    import java.sql.SQLException;  
    import java.util.ArrayList;  
    import java.util.List;  
     
    import org.mybatis.generator.api.MyBatisGenerator;  
    import org.mybatis.generator.config.Configuration;  
    import org.mybatis.generator.config.xml.ConfigurationParser;  
    import org.mybatis.generator.exception.InvalidConfigurationException;  
    import org.mybatis.generator.exception.XMLParserException;  
    import org.mybatis.generator.internal.DefaultShellCallback;  
    
    
    public class GenMain {
    	
    	public static void main(String[] args) {
    		
    		 List<String> warnings = new ArrayList<String>();  
    	        boolean overwrite = true;  
    	        String genCfg = "/generatorConfig.xml";  
    	        File configFile = new File(GenMain.class.getResource(genCfg).getFile());  
    	        ConfigurationParser cp = new ConfigurationParser(warnings);  
    	        Configuration config = null;  
    	        try {  
    	            config = cp.parseConfiguration(configFile);  
    	        } catch (IOException e) {  
    	            e.printStackTrace();  
    	        } catch (XMLParserException e) {  
    	            e.printStackTrace();  
    	        }  
    	        DefaultShellCallback callback = new DefaultShellCallback(overwrite);  
    	        MyBatisGenerator myBatisGenerator = null;  
    	        try {  
    	            myBatisGenerator = new MyBatisGenerator(config, callback, warnings);  
    	        } catch (InvalidConfigurationException e) {  
    	            e.printStackTrace();  
    	        }  
    	        try {  
    	            myBatisGenerator.generate(null);  
    	        } catch (SQLException e) {  
    	            e.printStackTrace();  
    	        } catch (IOException e) {  
    	            e.printStackTrace();  
    	        } catch (InterruptedException e) {  
    	            e.printStackTrace();  
    	        }  
    		
    		
    	}
    
    }

关于上面的配置文档说明可以查看我的另一篇博客文章：http://blog.csdn.net/shayboke/article/details/61202079