🔥码云GVP开源项目 12k star Uniapp+ElementUI 功能强大 支持多语言、二开方便! 广告
开发环境: System:Windows WebBrowser:IE6+、Firefox3+ JavaEE Server:tomcat5.0.2.8、tomcat6 IDE:eclipse、MyEclipse 8 Database:MySQL 开发依赖库: JavaEE5、Spring 3.0.5、Mybatis 3.0.4、myBatis-spring-1.0、Struts2.2.3、junit4.8.2、ext2.2.2 Email:hoojo_@126.com Blog:[http://blog.csdn.net/IBM_hoojo](http://blog.csdn.net/IBM_hoojo) [http://hoojo.cnblogs.com/](http://hoojo.cnblogs.com/) 上次介绍过Spring3、SpringMVC、MyBatis3整合,在线博文:[http://www.cnblogs.com/hoojo/archive/2011/04/15/2016324.html](http://www.cnblogs.com/hoojo/archive/2011/04/15/2016324.html) ###一、准备工作 1、 下载jar包 Struts2 jar下载: [http://labs.renren.com/apache-mirror//struts/library/struts-2.2.3-lib.zip](http://labs.renren.com/apache-mirror/struts/library/struts-2.2.3-lib.zip) Spring3 jar下载: [http://ebr.springsource.com/repository/app/library/version/detail?name=org.springframework.spring&version=3.0.5.RELEASE](http://ebr.springsource.com/repository/app/library/version/detail?name=org.springframework.spring&version=3.0.5.RELEASE) MyBatis3 jar 下载:[http://www.mybatis.org/java.html](http://www.mybatis.org/java.html) 2、 添加的jar包如下: [![image](https://box.kancloud.cn/2016-04-01_56fe1228701fa.gif "image")](http://hi.csdn.net/attachment/201105/11/0_13051060949h9C.gif) #### 二、Spring、MyBatis整合 1、 需要的jar文件如下: [![clip_image002](https://box.kancloud.cn/2016-04-01_56fe12288ecc8.gif "clip_image002")](http://hi.csdn.net/attachment/201105/11/0_13051061019KQL.gif) 2、 在src目录中加入mybatis.xml,内容如下: ~~~ <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> <-- 别名 --> <typeAliases> <typeAlias type="com.hoo.entity.Account" alias="account"/> <typeAliases> <configuration> ~~~ 上面的配置文件中,可以加入一些公共、常用的MyBatis方面的全局配置。如handler、objectFactory、plugin、以及mappers的映射路径(由于在applicationContext-common中的SqlSessionFactoryBean有配置mapper的location,这里就不需要配置)等。这个类的文件名称和下面的applicationContext-common.xml中的configLocation中的值对应,不是随便写的。 3、 在src目录中添加applicationContext-common.xml中加入内容如下: ~~~ <xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "> <-- 配置DataSource数据源 --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://10.0.0.131:3306/ash2"/> <property name="username" value="dev"/> <property name="password" value="dev"/> bean> <-- 配置SqlSessionFactoryBean --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis.xml"/> <-- mapper和resultmap配置路径 --> <property name="mapperLocations"> <list> <-- 表示在com.hoo.resultmap包或以下所有目录中,以-resultmap.xml结尾所有文件 --> <value>classpath:com/hoo/resultmap/**/*-resultmap.xmlvalue> <value>classpath:com/hoo/entity/*-resultmap.xmlvalue> <value>classpath:com/hoo/mapper/**/*-mapper.xmlvalue> list> property> bean> <-- 配置事务管理器,注意这里的dataSource和SqlSessionFactoryBean的dataSource要一致,不然事务就没有作用了 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> bean> <-- 配置事务的传播特性 --> <bean id="baseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true"> <property name="transactionManager" ref="transactionManager" /> <property name="transactionAttributes"> <props> <prop key="add*">PROPAGATION_REQUIREDprop> <prop key="edit*">PROPAGATION_REQUIREDprop> <prop key="remove*">PROPAGATION_REQUIREDprop> <prop key="insert*">PROPAGATION_REQUIREDprop> <prop key="update*">PROPAGATION_REQUIREDprop> <prop key="del*">PROPAGATION_REQUIREDprop> <prop key="*">readOnlyprop> props> property> bean> <-- 通过扫描的模式,扫描目录在com/hoo/mapper目录下,所有的mapper都继承SqlMapper接口的接口, 这样一个bean就可以了 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.hoo.mapper"/> <property name="markerInterface" value="com.hoo.mapper.SqlMapper"/> <bean> <beans> ~~~ DataSource,这里的是采用jdbc的dataSource; SqlSessionFactory,是MyBatis团队提供整合Spring的SqlSession工厂Bean用它可以完成Spring和MyBatis的整合。SqlSessionFactoryBean需要注入DataSource,配置myBatis配置文件的location,以及配置mapper.xml和resultMap.xml文件的路径,可以用通配符模式配置。其实mapper里面是可以存放resultMap的内容的。由于resultMap文件的内容是和JavaBean及数据库表对象进行映射的。一般一张表、一个JavaBean(Model)对应一个resultMap文件。将resultMap独立出来提供可读性、维护性。 TransactionManager,事务管理器是采用jdbc的管理器。需要注入DataSource数据源,这里注入的数据源和SqlSessionFactory是同一个数据源。如果不同的数据源,事务将无法起到作用。 baseTransactionProxy,事务的传播特性才有spring提供的TransactionProxyFactoryBean这个事务代理工厂的拦截器类来完成。其他的暂时还没有可以支持事务配置的传播特性和隔离级别的方法,关于这里你可以参考:[http://www.cnblogs.com/hoojo/archive/2011/04/15/2017447.html](http://www.cnblogs.com/hoojo/archive/2011/04/15/2017447.html) MapperScannerConfigurer是MyBatis的mapper接口的扫描器,通过这个配置可以完成对指定basePackage报下的类进行扫描,如果这些类有继承SqlMapper这个类的,将会是MyBatis的接口。不需要单独配置mapper,而完成注入。 4、 在src目录添加applicationContext-beans.xml这个文件,文件内容如下: ~~~ <xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <-- 注解探测器 --> <context:component-scan base-package="com.hoo"/> <beans> ~~~ 这里面可以完成一下Action、Bean的注入配置 5、 JavaBean(Model、Entity)相关类、及resultMap.xml文件内容 Bean ~~~ package com.hoo.entity; import java.io.Serializable; import java.util.Date; public class Account implements Serializable { private static final long serialVersionUID = -7970848646314840509L; private Integer accountId; private String username; private String password; private Date createTime; public Account() { super(); } //getter、setter @Override public String toString() { return this.accountId + "#" + this.username + "#" + this.password + "#" + this.createTime; } } account-resultMap.xml xml version="1.0" encoding="UTF-8"?> DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="accountMap"> <resultMap type="com.hoo.entity.Account" id="accountResultMap"> <id property="accountId" column="account_id"/> <result property="username" column="username"/> <result property="password" column="password"/> <result property="createTime" column="create_time"/> <resultMap> <mapper> ~~~ resultMap的type属性和对应的classpath对应,id会在mapper.xml文件中用到。下面的属性property是JavaBean的属性,column和数据库的字段对应。 6、 上面的applicationContext-common.xml中配置了SqlMapper,下面是SqlMapper代码,就一个空接口 ~~~ package com.hoo.mapper; /** * function:所有的Mapper继承这个接口 * @author hoojo * @createDate 2011-4-12 下午04:00:31 * @file SqlMapper.java * @package com.hoo.mapper * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public interface SqlMapper { } ~~~ 7、 定制我们自己的增删改查(CRUD)组件,接口如下 ~~~ package com.hoo.mapper; import java.util.List; import org.springframework.dao.DataAccessException; /** * function: BaseSqlMapper继承SqlMapper,对Mapper进行接口封装,提供常用的增删改查组件; * 也可以对该接口进行扩展和封装 * @author hoojo * @createDate 2011-4-14 上午11:36:41 * @file BaseSqlMapper.java * @package com.hoo.mapper * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public interface BaseSqlMapper<T> extends SqlMapper { public void add(T entity) throws DataAccessException; public void edit(T entity) throws DataAccessException; public void remvoe(T entity) throws DataAccessException; public T get(T entity) throws DataAccessException; public List<T> getList(T entity) throws DataAccessException; } ~~~ 当然实际开发中,增删改查组件一定不止这几个方法。这里只是随便挪列几个方法做一个示例。实际中可以根据需求进行添加方法,这里添加的方法可以用一个mapper.xml进行实现,然后注入这个mapper即可完成操作。也可以定义其他的mapper,如AccountMapper继承这个接口。然后为AccountMapper提供实现也是可以的。 8、 下面看看AccountMapper接口 ~~~ package com.hoo.mapper; import java.util.List; import com.hoo.entity.Account; /** * function:继承SqlMapper,MyBatis数据操作接口;此接口无需实现类 * @author hoojo * @createDate 2010-12-21 下午05:21:20 * @file AccountMapper.java * @package com.hoo.mapper * @project MyBatis * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public interface AccountMapper<T extends Account> extends BaseSqlMapper<T> { public List<T> getAllAccount(); } ~~~ 上面的AccountMapper继承了BaseSqlMapper,并且提供了自己所需要的方法。下面实现这个Mapper中和父接口的方法。 account-mapper.xml ~~~ <xml version="1.0" encoding="UTF-8"?> <DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <-- namespace和定义的Mapper接口对应,并实现其中的方法 --> <mapper namespace="com.hoo.mapper.AccountMapper"> <select id="getList" parameterType="com.hoo.entity.Account" resultType="list" resultMap="accountResultMap"> select * from account where username like '%' #{username} '%' select> <select id="getAllAccount" resultType="list" resultMap="accountResultMap"> select * from account select> <-- accountResultMap是account-resultmap.xml中定义的resultmap --> <select id="get" parameterType="account" resultType="com.hoo.entity.Account" resultMap="accountResultMap"> [CDATA[ select * from account where account_id = #{accountId} ]]> select> <-- 自动生成id策略 --> <insert id="add" useGeneratedKeys="true" keyProperty="account_id" parameterType="account"> insert into account(account_id, username, password) values(#{accountId}, #{username}, #{password}) insert> <update id="edit" parameterType="account"> update account set username = #{username}, password = #{password} where account_id = #{accountId} update> <delete id="remove" parameterType="account"> delete from account where account_id = #{accountId} <delete> <mapper> ~~~ mapper的namespace和接口的classpath对应,里面的sql语句的id和方法名称对应。这样就完成了AccountMapper的实现。 9、 下面来测试下AccountMapper的功能,代码如下: ~~~ package com.hoo.mapper; import java.util.List; import javax.inject.Inject; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit38.AbstractJUnit38SpringContextTests; import com.hoo.entity.Account; /** * function: AccountMapper JUnit测试类 * @author hoojo * @createDate 2011-4-12 下午04:21:50 * @file AccountMapperTest.java * @package com.hoo.mapper * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ @ContextConfiguration("classpath:applicationContext-*.xml") public class AccountMapperTest extends AbstractJUnit38SpringContextTests { @Inject private AccountMapper<Account> mapper; public void testGetAccount() { Account acc = new Account(); acc.setAccountId(28); System.out.println(mapper.get(acc)); } public void testAdd() { Account account = new Account(); account.setUsername("lisi@155.com"); account.setPassword("abc"); mapper.add(account); } public void testEditAccount() { Account acc = new Account(); acc.setAccountId(28); acc = mapper.get(acc); System.out.println(acc); acc.setUsername("Zhangsan22"); acc.setPassword("123123"); mapper.edit(acc); System.out.println(mapper.get(acc)); } public void testRemoveAccount() { Account acc = new Account(); acc.setAccountId(28); mapper.remvoe(acc); System.out.println(mapper.get(acc)); } public void testAccountList() { List<Account> acc = mapper.getAllAccount(); System.out.println(acc.size()); System.out.println(acc); } public void testList() { Account acc = new Account(); acc.setUsername("@qq.com"); List<Account> list = mapper.getList(acc); System.out.println(list.size()); System.out.println(list); } } ~~~ 运行上面的方法,没有错误基本上就算完成了Mapper的功能了。 10、 下面来写一个数据库操作的基类Dao,代码如下: ~~~ package com.hoo.dao; import java.util.List; import com.hoo.mapper.BaseSqlMapper; /** * function: * @author hoojo * @createDate 2011-4-14 上午11:30:09 * @file BaseMapperDao.java * @package com.hoo.dao * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public interface BaseMapperDao<T> { @SuppressWarnings("unchecked") public void setMapperClass(Class<? extends BaseSqlMapper> mapperClass); public BaseSqlMapper<T> getMapper(); public boolean add(T entity) throws Exception; public boolean edit(T entity) throws Exception; public boolean remove(T entity) throws Exception; public T get(T entity) throws Exception; public List<T> getAll(T entity) throws Exception; } ~~~ 这个Dao定义了BaseSqlMapper中的方法,还提供了一个setMapperClass的方法。目的是在使用这个dao的时候,需要设置一个Mapper的class。且这个Mapper必须要是BaseSqlMapper或它的子类。所有的dao都可以用BaseMapperDao来完成CRUD操作即可,当BaseMapperDao的方法不够用的情况下,可以在接口中提供SqlSession、SqlSessionTemplate方法,让底层人员自己扩展所需要的方法。这里的dao和mapper好像有点冗余,因为dao和mapper完成的功能都是类似或是相同的。但是你可以在dao中,同时调用不同的mapper,来完成当前模块的dao所需要的功能。 11、 看看BaseMapperDao的实现代码 ~~~ package com.hoo.dao.impl; import java.util.List; import javax.inject.Inject; import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionTemplate; import org.springframework.stereotype.Repository; import com.hoo.dao.BaseMapperDao; import com.hoo.mapper.BaseSqlMapper; /** * function:运用SqlSessionTemplate封装Dao常用增删改方法,可以进行扩展 * @author hoojo * @createDate 2011-4-14 下午12:22:07 * @file BaseMapperDaoImpl.java * @package com.hoo.dao.impl * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ @SuppressWarnings("unchecked") @Repository public class BaseMapperDaoImpl<T> extends SqlSessionTemplate implements BaseMapperDao<T> { @Inject public BaseMapperDaoImpl(SqlSessionFactory sqlSessionFactory) { super(sqlSessionFactory); } private Class<? extends BaseSqlMapper> mapperClass; public void setMapperClass(Class<? extends BaseSqlMapper> mapperClass) { this.mapperClass = mapperClass; } public BaseSqlMapper<T> getMapper() { return this.getMapper(mapperClass); } public boolean add(T entity) throws Exception { boolean flag = false; try { this.getMapper().add(entity); flag = true; } catch (Exception e) { flag = false; throw e; } return flag; } public boolean edit(T entity) throws Exception { boolean flag = false; try { this.getMapper().edit(entity); flag = true; } catch (Exception e) { flag = false; throw e; } return flag; } public T get(T entity) throws Exception { return this.getMapper().get(entity); } public List<T> getAll() throws Exception { return this.getMapper().getList(null); } public boolean remove(T entity) throws Exception { boolean flag = false; try { this.getMapper().remvoe(entity); flag = true; } catch (Exception e) { flag = false; throw e; } return flag; } } ~~~ 这个实现类继承了SqlSessionTemplate,并且要注入SqlSessionFactory。提供的setMapperClass方法需要设置其BaseSqlMapper或它的子类。 好了,至此基本的CRUD的mapper和dao就算完成了。现在我们可以定义我们自己的业务模块,调用公共组件来完成增删改查操作。 12、 下面测试下这个BaseMapperDao功能 ~~~ package com.hoo.dao; import javax.inject.Inject; import org.junit.Before; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit38.AbstractJUnit38SpringContextTests; import com.hoo.entity.Account; import com.hoo.mapper.AccountMapper; /** * function: * @author hoojo * @createDate 2011-4-14 下午01:08:49 * @file BaseMapperDaoImplTest.java * @package com.hoo.dao * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ @ContextConfiguration("classpath:applicationContext-*.xml") public class BaseMapperDaoImplTest extends AbstractJUnit38SpringContextTests { @Inject private BaseMapperDao<Account> dao; @Before public void init() { System.out.println(dao); dao.setMapperClass(AccountMapper.class); } public void testGet() throws Exception { init(); Account acc = new Account(); acc.setAccountId(28); System.out.println(dao.get(acc)); } public void testAdd() throws Exception { init(); Account account = new Account(); account.setUsername("temp@156.com"); account.setPassword("abc"); System.out.println(dao.add(account)); } } ~~~ 13、 下面定义AccountDao接口 ~~~ package com.hoo.dao; import java.util.List; import org.springframework.dao.DataAccessException; /** * function: Account数据库操作dao接口 * @author hoojo * @createDate 2011-4-13 上午10:21:38 * @file AccountDao.java * @package com.hoo.dao * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public interface AccountDao<T> { /** * function: 添加Account对象信息 * @author hoojo * @createDate 2011-4-13 上午11:50:05 * @param entity Account * @return boolean 是否成功 * @throws DataAccessException */ public boolean addAccount(T entity) throws DataAccessException; /** * function: 根据id对到Account信息 * @author hoojo * @createDate 2011-4-13 上午11:50:45 * @param id 编号id * @return Account * @throws DataAccessException */ public T getAccount(Integer id) throws DataAccessException; /** * function: 查询所有Account信息 * @author hoojo * @createDate 2011-4-13 上午11:51:45 * @param id 编号id * @return Account * @throws DataAccessException */ public List<T> getList() throws DataAccessException; } ~~~ 14、 AccountDao实现类 ~~~ package com.hoo.dao.impl; import java.util.List; import javax.inject.Inject; import org.springframework.dao.DataAccessException; import org.springframework.stereotype.Repository; import com.hoo.dao.AccountDao; import com.hoo.dao.BaseMapperDao; import com.hoo.entity.Account; import com.hoo.mapper.AccountMapper; /** * function: Account数据库操作dao * @author hoojo * @createDate 2011-4-13 上午10:25:02 * @file AccountDaoImpl.java * @package com.hoo.dao.impl * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ @SuppressWarnings("unchecked") @Repository public class AccountDaoImpl<T extends Account> implements AccountDao<T> { @Inject private BaseMapperDao<Account> dao; public boolean addAccount(T entity) throws DataAccessException { dao.setMapperClass(AccountMapper.class); boolean flag = false; try { dao.add(entity); flag = true; } catch (DataAccessException e) { flag = false; throw e; } catch (Exception e) { throw new RuntimeException(e); } return flag; } public T getAccount(Integer id) throws DataAccessException { dao.setMapperClass(AccountMapper.class); Account acc = new Account(); T entity = null; try { acc.setAccountId(id); entity = (T) dao.get(acc); } catch (DataAccessException e) { throw e; } catch (Exception e) { throw new RuntimeException(e); } return entity; } public List<T> getList() throws DataAccessException { dao.setMapperClass(AccountMapper.class); List<T> list = null; try { list = (List<T>) ((AccountMapper)dao.getMapper()).getAllAcount(); } catch (DataAccessException e) { throw e; } catch (Exception e) { throw new RuntimeException(e); } return list; } } ~~~ 注意,上面的方法都设置了MapperClass,表示当前dao的Mapper是AccountMapper对象。所有的mapper方法都是调用AccountMapper这个对象中的方法。 15、 下面定义服务器层接口 ~~~ package com.hoo.biz; import java.util.List; import org.springframework.dao.DataAccessException; /** * function: biz层Account接口 * @author hoojo * @createDate 2011-4-13 上午11:33:04 * @file AccountBiz.java * @package com.hoo.biz * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ public interface AccountBiz<T> { /** * function: 添加Account对象信息 * @author hoojo * @createDate 2011-4-13 上午11:50:05 * @param entity Account * @return boolean 是否成功 * @throws DataAccessException */ public boolean addAccount(T entity) throws DataAccessException; public boolean execute(T entity) throws DataAccessException; /** * function: 根据id对到Account信息 * @author hoojo * @createDate 2011-4-13 上午11:50:45 * @param id 编号id * @return Account * @throws DataAccessException */ public T getAccount(Integer id) throws DataAccessException; /** * function: 查询所有Account信息 * @author hoojo * @createDate 2011-4-13 上午11:51:45 * @param id 编号id * @return Account * @throws DataAccessException */ public List<T> getList() throws DataAccessException; } ~~~ 16、 AccountBiz的实现代码 ~~~ package com.hoo.biz.impl; import java.util.List; import javax.inject.Inject; import org.springframework.dao.DataAccessException; import org.springframework.stereotype.Component; import com.hoo.biz.AccountBiz; import com.hoo.dao.AccountDao; import com.hoo.entity.Account; import com.hoo.exception.BizException; /** * function: Account Biz接口实现 * @author hoojo * @createDate 2011-4-13 上午11:34:39 * @file AccountBizImpl.java * @package com.hoo.biz.impl * @project MyBatisForSpring * @blog http://blog.csdn.net/IBM_hoojo * @email hoojo_@126.com * @version 1.0 */ //@Component @Service public class AccountBizImpl<T extends Account> implements AccountBiz<T> { @Inject private AccountDao<T> dao; public boolean addAccount(T entity) throws DataAccessException { if (entity == null) { throw new BizException(Account.class.getName() + "对象参数信息为Empty!"); } return dao.addAccount(entity); } public T getAccount(Integer id) throws DataAccessException { return dao.getAccount(id); } public List<T> getList() throws DataAccessException { return dao.getList(); } public boolean execute(T entity) throws DataAccessException { if (entity == null) { throw new BizException(Account.class.getName() + "对象参数信息为Empty!"); } return dao.addAccount(entity); } } ~~~ 直接注入AccountDao完成相关操作即可 17、 如果你需要在业务层设置事务传播特性,需要在applicationContext-bean.xml中加入配置如下: ~~~ <-- 为AccountBiz接口配置事务拦截器,baseTransactionProxy是事务拦截器,在Action中获取这个对象 --> <bean id="accountBiz" parent="baseTransactionProxy"> <-- 设置target,也就是AccountBiz的实现类 --> <property name="target" ref="accountBizImpl"/> <bean> ~~~ 这样在Action中注入accountBiz这个对象后,那么当这个对象出现DataAccessException异常的时候,就会自动回滚事务。 至此,Spring和MyBatis的整合就完成了。