SSM整合（二）（mybatis逆向工程）

mybatis generator http://www.mybatis.org/generator/
　　1、首先要引用jar包

　　　　 <!-- MyBatis Generator Core-->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>

　　2、添加一个配置文件mgb.xml（MBG配置（mybatis generator简称））
http://www.mybatis.org/generator/configreference/xmlconfig.html

<?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>
<classPathEntry location="/Program Files/IBM/SQLLIB/java/db2java.zip" />

<context id="DB2Tables" targetRuntime="MyBatis3">
<jdbcConnection driverClass="COM.ibm.db2.jdbc.app.DB2Driver"
connectionURL="jdbc:db2:TEST"
userId="db2admin"
password="db2admin">
</jdbcConnection>

<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>

<javaModelGenerator targetPackage="test.model" targetProject="\MBGTestProject\src">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>

<sqlMapGenerator targetPackage="test.xml"  targetProject="\MBGTestProject\src">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>

<javaClientGenerator type="XMLMAPPER" targetPackage="test.dao"  targetProject="\MBGTestProject\src">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>

<table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >
<property name="useActualColumnNames" value="true"/>
<generatedKey column="ID" sqlStatement="DB2" identity="true" />
<columnOverride column="DATE_FIELD" property="startDate" />
<ignoreColumn column="FRED" />
<columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" />
</table>

</context>
</generatorConfiguration>

mbg.xml文件是对红色框框里的内容进行修改路径

最后一个修改table



去掉注释



事例

<!--如果不配置这个，生成的文件会有很多的注释，不方便看代码-->
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator>

最后修改后的mbg.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>
<!--导入的类什么的，我们不需要，直接删除-->
<!--<classPathEntry location="/Program Files/IBM/SQLLIB/java/db2java.zip" />-->

<context id="DB2Tables" targetRuntime="MyBatis3">
<!--如果不配置这个，生成的文件会有很多的注释，不方便看代码-->
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator>

<!--配置数据库连接-->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/ssm-crud"
userId="root"
password="123456">
</jdbcConnection>
<!--配置数据库连接-->

<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>

<!--JAVA模型生成，指定javabean生成位置-->
<javaModelGenerator targetPackage="com.dotcore.model" targetProject=".\src\main\java">
<!--JAVA模型生成，指定javabean生成位置-->
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>

<!--指定sql映射文件生成位置-->
<sqlMapGenerator targetPackage="mapper"  targetProject=".\src\main\resources">
<!--指定sql映射文件生成位置-->
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>

<!--指定dao生成的位置，mapper接口-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.dotcore.dao"  targetProject=".\src\main\java">
<!--指定dao生成的位置，mapper接口-->
<property name="enableSubPackages" value="true" />
</javaClientGenerator>

<!--table指定表的生成策略-->
<table tableName="tbl_emp" domainObjectName="Employee"></table>
<table tableName="tbl_dept" domainObjectName="Department"></table>

</context>
</generatorConfiguration>

配置写好后，最后就是生成文件了



点击java program

package com.dotcore.test;

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;

/**
* @author xuerr
* @version 2017/5/3
*/
public class MBGTest {
public static void main(String[] args) throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mbg.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);
}
}

run后，就会在相应的位置生成需要的文件