Spring 3.0.5 MyBatis 3.0.4(ibatis已正式更名为MyBatis) Struts2
MyBatis代码生成:mybatis-generator-core-1.3.1.jar
我是按照三个框架的整合步骤来做的。Spring+MyBatis+Struts2整合与传统的SSH框架不同的区别就在于把Spring和Hibernate的整合换成Spring+MyBatis。
代码层级的变动就是DAO层级以及实现的变更。
资料手册:MyBatis 3 User Guide Simplified Chinese.pdf(对照配置文件说明)
第一步:
新建Web工程,加入jar包。
第二部:
配置Web.xml 加入Struts2 和Spring Listener
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name>Web Application Tomcat 6 Servlet 3.0 JSP 2.2</display-name> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter </filter-class> <init-param> <param-name>config</param-name> <param-value> struts-default.xml,configs/struts/struts.xml </param-value> </init-param> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping> <!-- 用于初始化Spring容器的Listener --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param><!-- 配置spring配置文件的路径 --> <param-name>contextConfigLocation</param-name> <param-value> classpath:configs/spring/*-context.xml </param-value> </context-param> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
第三部:配置Spring配置文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!--配置数据源--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <!-- 指定连接数据库的驱动 --> <property name="driverClass" value="com.mysql.jdbc.Driver"/> <!-- 指定连接数据库的URL --> <property name="jdbcUrl" value="jdbc:mysql://192.168.1.121/test?autoReconnect=true&useUnicode=true&createDatabaseIfNotExist=true&characterEncoding=utf-8"/> <!-- 指定连接数据库的用户名 --> <property name="user" value="root"/> <!-- 指定连接数据库的密码 --> <property name="password" value="root"/> <!-- 指定连接数据库连接池的最大连接数 --> <property name="maxPoolSize" value="20"/> <!-- 指定连接数据库连接池的最小连接数 --> <property name="minPoolSize" value="1"/> <!-- 指定连接数据库连接池的初始化连接数 --> <property name="initialPoolSize" value="1"/> <!-- 指定连接数据库连接池的连接的最大空闲时间 --> <property name="maxIdleTime" value="20"/> </bean> <!-- TransactionManager --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource"> <ref bean="dataSource" /> </property></bean> <!--MyBatis的会话工厂 注意配置文件路径--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:configs/mybatis-config.xml"></property> <property name="dataSource" ref="dataSource"></property> </bean> <!--Mapper由Spring统一管理--> <bean id="StudentMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> <property name="mapperInterface" value="dao.StudentMapper"></property> </bean> <bean id="T1Mapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> <property name="mapperInterface" value="mapper.T1Mapper"></property> </bean> <bean id="StudentService" class="service.StudentServiceImpl"> <property name="studentMapper" ref="StudentMapper"></property> </bean> <!-- 事务拦截器 代理--> <bean id="baseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionInterceptor"> <property name="transactionManager"> <ref bean="transactionManager" /> </property> <!-- 下面定义事务传播属性--> <property name="transactionAttributes"> <props> <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop> <prop key="add*">PROPAGATION_REQUIRED</prop> <prop key="modify*">PROPAGATION_REQUIRED</prop> <prop key="remove*">PROPAGATION_REQUIRED</prop> <prop key="do*">PROPAGATION_REQUIRED</prop> </props> </property> </bean> <!-- 事务实例动态代理 --> <bean id="autoProxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> <property name="interceptorNames"> <list> <value>baseTransactionProxy</value> </list> </property> <property name="beanNames"> <value>*Service</value> </property> </bean> </beans>
第四步:配置MyBatis配置文件
mybatis-config.xml
<?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> <properties resource="configs/database/jdbc.properties"> </properties> <settings> <setting name="lazyLoadingEnabled" value="false" /> </settings> <!--配置与数据库的链接 参数定义在jdbc.properties中 跟Spring整合 这段可以省略--> <environments default="development"> <environment id="development"> <transactionManager type="JDBC" /> <dataSource type="POOLED"> <property name="driver" value="${driverClassName}" /> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> </dataSource> </environment> </environments> <mappers> <mapper resource="model/T1-sqlMapper.xml"/> <mapper resource="mapper/StudentMapper.xml"/> </mappers> </configuration>
第五步:学习如何用MyBatis代码生成器
新建mybatis-generator.xml放在src目录下
<?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="D:\lib\mysql-connector-java-5.0.8-bin.jar" /> <context id="DB2Tables" targetRuntime="MyBatis3"> <commentGenerator> <property name="suppressDate" value="true" /> </commentGenerator> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://192.168.1.121:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull" userId="root" password="root"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <javaModelGenerator targetPackage="model" targetProject="D:\workspace\SSI\src"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <sqlMapGenerator targetPackage="mapper" targetProject="D:\workspace\SSI\src"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <javaClientGenerator type="XMLMAPPER" targetPackage="dao" targetProject="D:\workspace\SSI\src"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <table tableName="push_info" domainObjectName="PushInfo"> </table> <table tableName="stu" domainObjectName="Student"> </table> </context> </generatorConfiguration>
通过java类的方式直接执行MyBatis代码生成
public class MyBatisGeneratorTest { public static void main(String[] args) throws Exception { List<String> warnings = new ArrayList<String>(); boolean overwrite = true; File configFile = new File("src\\configs\\mybatis-generator.xml"); System.out.println(configFile.getAbsolutePath()); 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); } }