MyBatis3整合Spring3、SpringMVC3

<!--加载Spring容器配置-->

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<!--设置Spring容器加载配置文件路径-->

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath*:applicationContext-*.xml</param-value>

</context-param>

<!--配置Spring核心控制器-->

<servlet>

<servlet-name>dispatcher</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>/WEB-INF/dispatcher.xml</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>dispatcher</servlet-name>

<url-pattern>*.do</url-pattern>

</servlet-mapping>

<!--解决工程编码过滤器-->

<filter>

<filter-name>characterEncodingFilter</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>characterEncodingFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="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>

'target='_blank'>http://www.springframework.org/schema/beans/spring-beans-3.0.xsd[/code]
'target='_blank'>http://www.springframework.org/schema/context[/code]
'target='_blank'>http://www.springframework.org/schema/context/spring-context-3.0.xsd"[/code]
<!--注解探测器-->

<context:component-scanbase-package="com.hoo"/>


<!--annotation默认的方法映射适配器-->

<beanid="handlerMapping"class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>


<beanid="handlerAdapter"class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>

</beans>


4、在src目录下添加applicationContext-common.xml，内容如下：

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="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-->

<beanid="dataSource"class="org.springframework.jdbc.datasource.DriverManagerDataSource">

<propertyname="driverClassName"value="com.mysql.jdbc.Driver"/>

<propertyname="url"value="jdbc:mysql://10.0.0.131:3306/ash2"/>

<propertyname="username"value="dev"/>

<propertyname="password"value="dev"/>

</bean>


<!--配置SqlSessionFactoryBean-->

<beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">

<propertyname="dataSource"ref="dataSource"/>

<propertyname="configLocation"value="classpath:mybatis.xml"/>

<!--mapper和resultmap配置路径-->

<propertyname="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.xml</value>

<value>classpath:com/hoo/entity/*-resultmap.xml</value>

<value>classpath:com/hoo/mapper/**/*-mapper.xml</value>

</list>

</property>

</bean>


<!--单独配置一个Mapper；这种模式就是得给每个mapper接口配置一个bean-->

<!--

<beanid="accountMapper"class="org.mybatis.spring.mapper.MapperFactoryBean">

<propertyname="mapperInterface"value="com.hoo.mapper.AccountMapper"/>

<propertyname="sqlSessionFactory"ref="sqlSessionFactory"/>

</bean>


<beanid="companyMapper"class="org.mybatis.spring.mapper.MapperFactoryBean">

<propertyname="mapperInterface"value="com.hoo.mapper.CompanyMapper"/>

<propertyname="sqlSessionFactory"ref="sqlSessionFactory"/>

</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-->

<beanclass="org.mybatis.spring.mapper.MapperScannerConfigurer">

<propertyname="basePackage"value="com.hoo.mapper"/>

<propertyname="markerInterface"value="com.hoo.mapper.SqlMapper"/>

</bean>

</beans>


上面的配置最先配置的是DataSource，这里采用的是jdbc的DataSource；
然后是SqlSessionFactoryBean，这个配置比较关键。SqlSessionFactoryBean需要注入DataSource数据源，其次还要设置configLocation也就是mybatis的xml配置文件路径，完成一些关于mybatis的配置，如settings、mappers、plugin等；
如果使用mapperCannerConfigurer模式，需要设置扫描根路径也就是你的mybatis的mapper接口所在包路径；凡是markerInterface这个接口的子接口都参与到这个扫描，也就是说所有的mapper接口继承这个SqlMapper。
如果你不使用自己的transaction事务，就使用MapperScannerConfigurer来完成SqlSession的打开、关闭和事务的回滚操作。在此期间，出现数据库操作的如何异常都会被转换成DataAccessException，这个异常是一个抽象的类，继承RuntimeException；
5、SqlMapper内容如下：

packagecom.hoo.mapper;


/**

*<b>function:</b>所有的Mapper继承这个接口

*@authorhoojo

*@createDate2011-4-12下午04:00:31

*@fileSqlMapper.java

*@packagecom.hoo.mapper

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicinterfaceSqlMapper{


}


6、实体类和ResultMap.xml

packagecom.hoo.entity;


importjava.io.Serializable;

importjavax.persistence.Entity;


@Entity

publicclassAccountimplementsSerializable{


privatestaticfinallongserialVersionUID=-7970848646314840509L;


privateIntegeraccountId;

privateIntegerstatus;

privateStringusername;

privateStringpassword;

privateStringsalt;

privateStringemail;

privateIntegerroleId;


//getter、setter


@Override

publicStringtoString(){

returnthis.accountId+"#"+this.status+"#"+this.username+"#"+

this.password+"#"+this.email+"#"+this.salt+"#"+this.roleId;

}

}


account-resultmap.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEmapperPUBLIC"-//mybatis.org//DTDMapper3.0//EN"

"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mappernamespace="accountMap">

<resultMaptype="com.hoo.entity.Account"id="accountResultMap">

<idproperty="accountId"column="account_id"/>

<resultproperty="username"column="username"/>

<resultproperty="password"column="password"/>

<resultproperty="status"column="status"/>

</resultMap>

</mapper>


7、在src目录中添加applicationContext-beans.xml内容如下：

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="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>

'target='_blank'>http://www.springframework.org/schema/beans/spring-beans-3.0.xsd[/code]
'target='_blank'>http://www.springframework.org/schema/context[/code]
'target='_blank'>http://www.springframework.org/schema/context/spring-context-3.0.xsd"[/code]
<!--注解探测器，在JUnit测试的时候需要-->

<context:component-scanbase-package="com.hoo"/>


</beans>


这里配置bean对象，一些不能用annotation注解的对象就可以配置在这里
8、在src目录中添加mybatis.xml，内容如下：

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEconfigurationPUBLIC"-//mybatis.org//DTDConfig3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

<!--别名-->

<typeAliases>

<typeAliastype="com.hoo.entity.Account"alias="account"/>

</typeAliases>

</configuration>


在这个文件放置一些全局性的配置，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
9、AccountMapper接口，内容如下：

packagecom.hoo.mapper;


importjava.util.List;

importorg.apache.ibatis.annotations.Select;

importcom.hoo.entity.Account;


/**

*<b>function:</b>继承SqlMapper，MyBatis数据操作接口；此接口无需实现类

*@authorhoojo

*@createDate2010-12-21下午05:21:20

*@fileAccountMapper.java

*@packagecom.hoo.mapper

*@projectMyBatis

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicinterfaceAccountMapperextendsSqlMapper{


publicList<Account>getAllAccount();


publicAccountgetAccount();


publicAccountgetAccountById(Stringid);


publicAccountgetAccountByNames(Stringspring);


@Select("select*fromaccountwhereusername=#{name}")

publicAccountgetAccountByName(Stringname);


publicvoidaddAccount(Accountaccount);


publicvoideditAccount(Accountaccount);


publicvoidremoveAccount(intid);

}


这个接口我们不需要实现，由mybatis帮助我们实现，我们通过mapper文件配置sql语句即可完成接口的实现。然后这个接口需要继承SqlMapper接口，不然在其他地方就不能从Spring容器中拿到这个mapper接口，也就是说当我们注入这个接口的时候将会失败。
当然，你不继承这个接口也可以。那就是你需要给买个mapper配置一个bean。配置方法如下：

<beanid="accountMapper"class="org.mybatis.spring.mapper.MapperFactoryBean">

<propertyname="mapperInterface"value="com.hoo.mapper.AccountMapper"/>

<propertyname="sqlSessionFactory"ref="sqlSessionFactory"/>

</bean>


这里的MapperFactoryBean可以帮助我们完成Session的打开、关闭等操作
10、在com.hoo.mapper也就是在AccountMapper接口的同一个包下，添加account-mapper.xml，内容如下：

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEmapperPUBLIC"-//mybatis.org//DTDMapper3.0//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-->

<mappernamespace="com.hoo.mapper.AccountMapper">

<!--id和mapper接口中的方法名对应，resultType使用mybatis.xml中的别名-->

<selectid="getAccount"resultType="account">

<![CDATA[

select*fromaccountlimit1

]]>

</select>


<selectid="getAllAccount"resultType="list"resultMap="accountResultMap">

<![CDATA[

select*fromaccount

]]>

</select>


<!--accountResultMap是account-resultmap.xml中定义的resultmap-->

<selectid="getAccountById"parameterType="string"resultType="com.hoo.entity.Account"resultMap="accountResultMap">

<![CDATA[

select*fromaccountwhereaccount_id=#{id}

]]>

</select>


<!--accountMap.accountResultMap是account-resultmap.xml中定义的resultmap，通过namespace.id找到-->

<selectid="getAccountByNames"parameterType="string"resultMap="accountMap.accountResultMap">

<![CDATA[

select*fromaccountwhereusername=#{name}

]]>

</select>


<sqlid="user_name_pwd">

username,password

</sql>


<!--自动生成id策略-->

<insertid="addAccount"useGeneratedKeys="true"keyProperty="account_id"parameterType="account">

insertintoaccount(account_id,status,username,password)

values(#{accountId},#{status},#{username},#{password})

</insert>


<!--根据selectKey语句生成主键-->

<insertid="addAccount4Key"parameterType="account">

<selectKeykeyProperty="account_id"order="BEFORE"resultType="int">

selectcast(random()*10000asInteger)afrom#Tab

</selectKey>

insertintoaccount(account_id,status,username,password)

values(#{accountId},#{status},#{username},#{password})

</insert>


<updateid="editAccount"parameterType="account">

updateaccountset

status=#{status},

username=#{username},

password=#{password}

whereaccount_id=#{accountId}

</update>


<deleteid="removeAccount"parameterType="int">

deletefromaccountwhereaccount_id=#{id}

</delete>

</mapper>


上面的namespace和定义接口类路径对应，所有的sql语句，如select、insert、delete、update的id和方法名称对应。关于更多MyBatis内容的讲解，这里就不赘述的。这里只完成整合！如果你不懂可以去阅读其他关于MyBatis的资料。
11、为了测试发布，这里使用junit和spring官方提供的spring-test.jar，完成spring框架整合的测试，代码如下：

packagecom.hoo.mapper;


importjava.util.List;

importjavax.inject.Inject;

importorg.springframework.test.context.ContextConfiguration;

importorg.springframework.test.context.junit38.AbstractJUnit38SpringContextTests;

importcom.hoo.entity.Account;


/**

*<b>function:</b>AccountMapperJUnit测试类

*@authorhoojo

*@createDate2011-4-12下午04:21:50

*@fileAccountMapperTest.java

*@packagecom.hoo.mapper

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/


@ContextConfiguration("classpath:applicationContext-*.xml")

publicclassAccountMapperTestextendsAbstractJUnit38SpringContextTests{


@Inject

//@Named("accountMapper")

privateAccountMappermapper;


publicvoidtestGetAccount(){

System.out.println(mapper.getAccount());

}


publicvoidtestGetAccountById(){

System.out.println(mapper.getAccountById("28"));

}


publicvoidtestGetAccountByName(){

System.out.println(mapper.getAccountByName("user"));

}


publicvoidtestGetAccountByNames(){

System.out.println(mapper.getAccountByNames("user"));

}


publicvoidtestAdd(){

Accountaccount=newAccount();

account.setEmail("temp@155.com");

account.setPassword("abc");

account.setRoleId(1);

account.setSalt("ss");

account.setStatus(0);

account.setUsername("Jack");

mapper.addAccount(account);

}


publicvoidtestEditAccount(){

Accountacc=mapper.getAccountByNames("Jack");

System.out.println(acc);

acc.setUsername("Zhangsan");

acc.setPassword("123123");

mapper.editAccount(acc);

System.out.println(mapper.getAccountById(acc.getAccountId()+""));

}


publicvoidtestRemoveAccount(){

Accountacc=mapper.getAccountByNames("Jack");

mapper.removeAccount(acc.getAccountId());

System.out.println(mapper.getAccountByNames("Jack"));

}


publicvoidtestAccountList(){

List<Account>acc=mapper.getAllAccount();

System.out.println(acc.size());

System.out.println(acc);

}

}


这里的注入并没有使用@Autowired、@Resource、@Qualifier注入，而是使用@Inject、@Named注入方式，Inject注入是JSR330的标准注入方式；而不局限于某个产品，使用于多个产品的使用，推荐使用这种方式；运行后，没有发现问题，就可以继续后续的编码工作了。
12、定义AccountDao接口及实现代码，代码如下：

packagecom.hoo.dao;


importjava.util.List;

importorg.springframework.dao.DataAccessException;


/**

*<b>function:</b>Account数据库操作dao接口

*@authorhoojo

*@createDate2011-4-13上午10:21:38

*@fileAccountDao.java

*@packagecom.hoo.dao

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicinterfaceAccountDao<T>{


/**

*<b>function:</b>添加Account对象信息

*@authorhoojo

*@createDate2011-4-13上午11:50:05

*@paramentityAccount

*@returnboolean是否成功

*@throwsDataAccessException

*/

publicbooleanaddAccount(Tentity)throwsDataAccessException;


/**

*<b>function:</b>根据id对到Account信息

*@authorhoojo

*@createDate2011-4-13上午11:50:45

*@paramid编号id

*@returnAccount

*@throwsDataAccessException

*/

publicTgetAccount(Integerid)throwsDataAccessException;


/**

*<b>function:</b>查询所有Account信息

*@authorhoojo

*@createDate2011-4-13上午11:51:45

*@paramid编号id

*@returnAccount

*@throwsDataAccessException

*/

publicList<T>getList()throwsDataAccessException;

}


接口实现

packagecom.hoo.dao.impl;


importjava.util.List;

importjavax.inject.Inject;

importorg.springframework.dao.DataAccessException;

importorg.springframework.stereotype.Repository;

importcom.hoo.dao.AccountDao;

importcom.hoo.entity.Account;

importcom.hoo.mapper.AccountMapper;


/**

*<b>function:</b>Account数据库操作dao

*@authorhoojo

*@createDate2011-4-13上午10:25:02

*@fileAccountDaoImpl.java

*@packagecom.hoo.dao.impl

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

@SuppressWarnings("unchecked")

@Repository

publicclassAccountDaoImpl<TextendsAccount>implementsAccountDao<T>{


@Inject

privateAccountMappermapper;


publicbooleanaddAccount(Tentity)throwsDataAccessException{

booleanflag=false;

try{

mapper.addAccount(entity);

flag=true;

}catch(DataAccessExceptione){

flag=false;

throwe;

}

returnflag;

}


publicTgetAccount(Integerid)throwsDataAccessException{

Tentity=null;

try{

entity=(T)mapper.getAccountById(String.valueOf(id));

}catch(DataAccessExceptione){

throwe;

}

returnentity;

}


publicList<T>getList()throwsDataAccessException{

return(List<T>)mapper.getAllAccount();

}

}


13、服务层AccountBiz接口及实现代码
接口：

packagecom.hoo.biz;


importjava.util.List;

importorg.springframework.dao.DataAccessException;


/**

*<b>function:</b>biz层Account接口

*@authorhoojo

*@createDate2011-4-13上午11:33:04

*@fileAccountBiz.java

*@packagecom.hoo.biz

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicinterfaceAccountBiz<T>{

/**

*<b>function:</b>添加Account对象信息

*@authorhoojo

*@createDate2011-4-13上午11:50:05

*@paramentityAccount

*@returnboolean是否成功

*@throwsDataAccessException

*/

publicbooleanaddAccount(Tentity)throwsDataAccessException;


/**

*<b>function:</b>根据id对到Account信息

*@authorhoojo

*@createDate2011-4-13上午11:50:45

*@paramid编号id

*@returnAccount

*@throwsDataAccessException

*/

publicTgetAccount(Integerid)throwsDataAccessException;


/**

*<b>function:</b>查询所有Account信息

*@authorhoojo

*@createDate2011-4-13上午11:51:45

*@paramid编号id

*@returnAccount

*@throwsDataAccessException

*/

publicList<T>getList()throwsDataAccessException;

}


实现代码：

packagecom.hoo.biz.impl;


importjava.util.List;

importjavax.inject.Inject;

importorg.springframework.dao.DataAccessException;

importorg.springframework.stereotype.Service;

importcom.hoo.biz.AccountBiz;

importcom.hoo.dao.AccountDao;

importcom.hoo.entity.Account;

importcom.hoo.exception.BizException;


/**

*<b>function:</b>AccountBiz接口实现

*@authorhoojo

*@createDate2011-4-13上午11:34:39

*@fileAccountBizImpl.java

*@packagecom.hoo.biz.impl

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

//@Component

@Service

publicclassAccountBizImpl<TextendsAccount>implementsAccountBiz<T>{


@Inject

privateAccountDao<T>dao;


publicbooleanaddAccount(Tentity)throwsDataAccessException{

if(entity==null){

thrownewBizException(Account.class.getName()+"对象参数信息为Empty！");

}

returndao.addAccount(entity);

}


publicTgetAccount(Integerid)throwsDataAccessException{

returndao.getAccount(id);

}


publicList<T>getList()throwsDataAccessException{

returndao.getList();

}

}


上面用到了一个自定义的异常信息，代码如下：

packagecom.hoo.exception;


importorg.springframework.dao.DataAccessException;


/**

*<b>function:</b>自定义Biz层异常信息

*@authorhoojo

*@createDate2011-4-13上午11:42:19

*@fileBizException.java

*@packagecom.hoo.exception

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicclassBizExceptionextendsDataAccessException{


/**

*@authorHoojo

*/

privatestaticfinallongserialVersionUID=1L;


publicBizException(Stringmsg){

super(msg);

}


publicBizException(Stringmsg,Throwablecause){

super(msg,cause);

}

}


这里只是简单的继承，如果还有其他的异常业务或需求可以进行具体的实现
14、springMVC的控制器，AccountController代码如下：

packagecom.hoo.controller;


importjavax.inject.Inject;

importjavax.servlet.http.HttpServletRequest;

importorg.springframework.stereotype.Controller;

importorg.springframework.ui.Model;

importorg.springframework.web.bind.annotation.ExceptionHandler;

importorg.springframework.web.bind.annotation.RequestMapping;

importcom.hoo.biz.AccountBiz;

importcom.hoo.entity.Account;


/**

*<b>function:</b>Account控制器

*@authorhoojo

*@createDate2011-4-13上午10:18:02

*@fileAccountController.java

*@packagecom.hoo.controller

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

@Controller

@RequestMapping("/account")

publicclassAccountController{


@Inject

privateAccountBiz<Account>biz;


@RequestMapping("/add")

publicStringadd(Accountacc){

System.out.println(acc);

biz.addAccount(acc);

return"redirect:/account/list.do";

}


@RequestMapping("/get")

publicStringget(Integerid,Modelmodel){

System.out.println("##ID:"+id);

model.addAttribute(biz.getAccount(id));

return"/show.jsp";

}


@RequestMapping("/list")

publicStringlist(Modelmodel){

model.addAttribute("list",biz.getList());

return"/list.jsp";

}


@ExceptionHandler(Exception.class)

publicStringexception(Exceptione,HttpServletRequestrequest){

//e.printStackTrace();

request.setAttribute("exception",e);

return"/error.jsp";

}

}


15、基本页面代码
index.jsp

<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%>

<%1:
2:Stringpath=request.getContextPath();
3:StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">


<title>MyBatis整合Spring3.0.5</title>

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="Thisismypage">

</head>


<body>

<h3>MyBatis3.0.4整合Spring3.0.5</h3>

<ahref="account/list.do">查询所有</a><br/>

<ahref="account/add.do?username=abcdef&password=123132&status=2">添加</a><br/>

<ahref="account/get.do?id=25">查询</a><br/>

</body>

</html>


List.jsp

<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%>

<%@tagliburi="http://java.sun.com/jsp/jstl/core"prefix="c"%>

<%1:
2:Stringpath=request.getContextPath();
3:StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">


<title>allAccountResult</title>


<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="Thisismypage">

</head>


<body>

<c:forEachitems="${list}"var="data">

id:${data.accountId}---name:${data.username}---password:${data.password}<hr/>

</c:forEach>

</body>

</html>


show.jsp

<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%>

<%1:
2:Stringpath=request.getContextPath();
3:StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">


<title>showAccount</title>


<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="Thisismypage">

</head>


<body>

${account}<br/>

${account.username}#${account.accountId}

</body>

</html>



error.jsp
<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%>
<%
Stringpath=request.getContextPath();
StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">
<html>
<head>
<basehref="<%=basePath%>">

<title>ErrorPage</title>

<metahttp-equiv="pragma"content="no-cache">
<metahttp-equiv="cache-control"content="no-cache">
<metahttp-equiv="expires"content="0">
<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">
<metahttp-equiv="description"content="Thisismypage">
</head>

<body>
<H2>Exception:${exception}</H2>
<ahref="javascript:document.getElementById('show').style.display='block';void(0);">
详细信息
</a>
<divid="show"style="color:red;display:none;">
<%Exceptionex=(Exception)request.getAttribute("exception");%>

<%ex.printStackTrace(newjava.io.PrintWriter(out));%>
</div>
</body>
</html>

16、以上就基本上完成了整个Spring+SpringMVC+MyBatis的整合了。如果你想添加事务管理，得在applicationContext-common.xml中加入如下配置：

<!--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-->

<beanid="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<propertyname="dataSource"ref="dataSource"/>

</bean>


同时还需要加入aspectjweaver.jar这个jar包；
注意的是：Jdbc的TransactionManager不支持事务隔离级别，我在整个地方加入其它的TransactionManager，增加对transaction的隔离级别都尝试失败！
也许可以用于jpa、jdo、jta这方面的东西。不知道大家对MyBatis的事务是怎么处理的？
17、对Dao进行扩展封装，运用SqlSessionDaoSupport进行模板的扩展或运用：
BaseDao代码如下：

packagecom.hoo.dao;


importjava.util.List;


/**

*<b>function:</b>

*@authorhoojo

*@createDate2011-4-12下午04:18:09

*@fileIBaseDao.java

*@packagecom.hoo.dao

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*@param<T>

*/

publicinterfaceBaseDao<T>{


publicbooleanadd(StringclassMethod,Tentity)throwsException;


publicbooleanedit(StringclassMethod,Tentity)throwsException;


publicbooleanremove(StringclassMethod,Tentity)throwsException;


publicTget(StringclassMethod,Tentity)throwsException;


publicList<T>getAll(StringclassMethod)throwsException;

}


实现类代码：

packagecom.hoo.dao.impl;


importjava.util.ArrayList;

importjava.util.List;

importjavax.inject.Inject;

importorg.apache.ibatis.session.SqlSessionFactory;

importorg.mybatis.spring.support.SqlSessionDaoSupport;

importorg.springframework.stereotype.Repository;

importcom.hoo.dao.BaseDao;


/**

*<b>function:</b>运用SqlSessionDaoSupport封装Dao常用增删改方法，可以进行扩展

*@authorhoojo

*@createDate2011-4-13下午06:33:37

*@fileBaseDaoImpl.java

*@packagecom.hoo.dao.impl

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

@Repository

@SuppressWarnings({"unchecked","unused"})

publicclassBaseDaoImpl<TextendsObject>extendsSqlSessionDaoSupportimplementsBaseDao<T>{


@Inject

privateSqlSessionFactorysqlSessionFactory;


publicbooleanadd(StringclassMethod,Tentity)throwsException{

booleanflag=false;

try{

flag=this.getSqlSession().insert(classMethod,entity)>0?true:false;

}catch(Exceptione){

flag=false;

throwe;

}

returnflag;

}


publicbooleanedit(StringclassMethod,Tentity)throwsException{

booleanflag=false;

try{

flag=this.getSqlSession().update(classMethod,entity)>0?true:false;

}catch(Exceptione){

flag=false;

throwe;

}

returnflag;

}


publicTget(StringclassMethod,Tentity)throwsException{

Tresult=null;

try{

result=(T)this.getSqlSession().selectOne(classMethod,entity);

}catch(Exceptione){

throwe;

}

returnresult;

}


publicList<T>getAll(StringclassMethod)throwsException{

List<T>result=newArrayList<T>();

try{

result=this.getSqlSession().selectList(classMethod);

}catch(Exceptione){

throwe;

}

returnresult;

}


publicbooleanremove(StringclassMethod,Tentity)throwsException{

booleanflag=false;

try{

flag=this.getSqlSession().delete(classMethod,entity)>0?true:false;

}catch(Exceptione){

flag=false;

throwe;

}

returnflag;

}

}


值得说明的是，这个类继承了SqlSessionDaoSupport，它需要我们帮助它注入SqlSessionFactory或是SqlSessionTemplate，如果两者都被注入将忽略SqlSessionFactory属性，使用SqlSessionTemplate模板。
继承SqlSessionDaoSupport后，可以拿到SqlSession完成数据库的操作；
18、对Dao进行扩展封装，运用SqlSessionTemplate进行模板的扩展或运用：
首先看看这个组件中运用的一个Mapper的基类接口：

packagecom.hoo.mapper;


importjava.util.List;

importorg.springframework.dao.DataAccessException;


/**

*<b>function:</b>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

*@authorhoojo

*@createDate2011-4-14上午11:36:41

*@fileBaseSqlMapper.java

*@packagecom.hoo.mapper

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicinterfaceBaseSqlMapper<T>extendsSqlMapper{


publicvoidadd(Tentity)throwsDataAccessException;


publicvoidedit(Tentity)throwsDataAccessException;


publicvoidremvoe(Tentity)throwsDataAccessException;


publicTget(Tentity)throwsDataAccessException;


publicList<T>getList(Tentity)throwsDataAccessException;

}


该接口继承SqlMapper接口，但是该接口没有MyBatis的mapper实现。需要我们自己的业务mapper继承这个接口，完成上面的方法的实现。
看看继承SqlSessionTemplate的BaseMapperDao代码：

packagecom.hoo.dao;


importjava.util.List;

importcom.hoo.mapper.BaseSqlMapper;


/**

*<b>function:</b>

*@authorhoojo

*@createDate2011-4-14上午11:30:09

*@fileBaseMapperDao.java

*@packagecom.hoo.dao

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

publicinterfaceBaseMapperDao<T>{


@SuppressWarnings("unchecked")

publicvoidsetMapperClass(Class<?extendsBaseSqlMapper>mapperClass);


publicbooleanadd(Tentity)throwsException;


publicbooleanedit(Tentity)throwsException;


publicbooleanremove(Tentity)throwsException;


publicTget(Tentity)throwsException;


publicList<T>getAll()throwsException;

}


packagecom.hoo.dao.impl;


importjava.util.List;

importjavax.inject.Inject;

importorg.apache.ibatis.session.SqlSessionFactory;

importorg.mybatis.spring.SqlSessionTemplate;

importorg.springframework.stereotype.Repository;

importcom.hoo.dao.BaseMapperDao;

importcom.hoo.mapper.BaseSqlMapper;


/**

*<b>function:</b>运用SqlSessionTemplate封装Dao常用增删改方法，可以进行扩展

*@authorhoojo

*@createDate2011-4-14下午12:22:07

*@fileBaseMapperDaoImpl.java

*@packagecom.hoo.dao.impl

*@projectMyBatisForSpring

*@blog'target='_blank'>http://blog.csdn.net/IBM_hoojo[/code]
*@emailhoojo_@126.com

*@version1.0

*/

@SuppressWarnings("unchecked")

@Repository

publicclassBaseMapperDaoImpl<T>extendsSqlSessionTemplateimplementsBaseMapperDao<T>{


@Inject

publicBaseMapperDaoImpl(SqlSessionFactorysqlSessionFactory){

super(sqlSessionFactory);

}


privateClass<?extendsBaseSqlMapper>mapperClass;


publicvoidsetMapperClass(Class<?extendsBaseSqlMapper>mapperClass){

this.mapperClass=mapperClass;

}


privateBaseSqlMapper<T>getMapper(){

returnthis.getMapper(mapperClass);

}


publicbooleanadd(Tentity)throwsException{

booleanflag=false;

try{

this.getMapper().add(entity);

flag=true;

}catch(Exceptione){

flag=false;

throwe;

}

returnflag;

}


publicbooleanedit(Tentity)throwsException{

booleanflag=false;

try{

this.getMapper().edit(entity);

flag=true;

}catch(Exceptione){

flag=false;

throwe;

}

returnflag;

}


publicTget(Tentity)throwsException{

returnthis.getMapper().get(entity);

}


publicList<T>getAll()throwsException{

returnthis.getMapper().getList(null);

}


publicbooleanremove(Tentity)throwsException{

booleanflag=false;

try{

this.getMapper().remvoe(entity);

flag=true;

}catch(Exceptione){

flag=false;

throwe;

}

returnflag;

}

}


上面这个类继承了SqlSessionTemplate，这个类需要提供一个构造函数。这里提供的是SqlSessionFactory的构造函数，通过该函数注入SqlSessionFactory即可完成数据库操作；
例外的是这个类还有一个关键属性mapperClass，这个class需要是BaseSqlMapper接口或是子接口，然后通过SqlSessionTemplate模板获得当前设置的Class的Mapper对象，完成数据库操作。
该类的测试代码：

@ContextConfiguration("classpath:applicationContext-*.xml")

publicclassBaseMapperDaoImplTestextendsAbstractJUnit38SpringContextTests{


@Inject

privateBaseMapperDao<Company>dao;


publicvoidinit(){

dao.setMapperClass(CompanyMapper.class);

}


publicvoidtestGet()throwsException{

init();

Companyc=newCompany();

c.setCompanyId(4);

System.out.println(dao.get(c));

}


publicvoidtestAdd()throwsException{

init();

Companyc=newCompany();

c.setAddress("北京中关村");

c.setName("beijin");

System.out.println(dao.add(c));

}

}


一般情况下，你可以在一个Dao中注入BaseMapperDao，紧跟着需要设置MapperClass。只有设置了MapperClass后，BaseMapperDao才能获取对应mapper，完成相关的数据库操作。当然你可以在这个Dao中将SqlSessionTemplate、SqlSession暴露出来，当BaseMapperDao的方法不够用，可以进行扩展。