SpringMVC,Spring,Mybatis集成中Mybatis配置

1、配置mybatis配置文件<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration> <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings> <typeAliases> <package name="com.gwolf.crud.bean"/> </typeAliases></configuration>

2、建立一张员工表和部门表：

3、使用mybatis逆向工程生成对应的表以及mapper,首先添加逆向工程需要的依赖包：<dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.6</version></dependency>

4、新建一个mybatis逆向生成文件mbg.xml<?xml version="1.0" encod足毂忍珩ing="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"> <commentGenerator> <property name="suppressAllComments" value="true" /> </commentGenerator> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql:localhost:3306/ssm_crud" userId="root" password="root"> </jdbcConnection> <javaTypeResolver > <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- javabean生成位置 --> <javaModelGenerator targetPackage="com.gwolf.crud.bean" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 值得顶sql映射文件生成的位置 --> <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 指定dao接口生成的位置，mapper接口 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.gwolf.crud.bean.dao" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 指定每个表生成策略 --> <table tableName="tbl_emp" domainObjectName="Employee" > </table> <table tableName="tbl_dept" domainObjectName="Department" > </table> </context></generatorConfiguration>

5、使用java代码逆向生成代码。package com.gwolf.crud.test;import java.io.File;import java.io.IOException;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.XMLParserException;import org.mybatis.generator.internal.DefaultShellCallback;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); }}

6、运行上面java代码中main方法。查看代码是否生成。