Mybatis+SpringMVC的项目环境搭建

一、web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>ssm</display-name>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMVC.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>PostEncoding</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>PostEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>changMethod</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>changMethod</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<display-name>MIPO_CRM</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>

二、jdbc.properties（Mysql）

#config
mySQLdriver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/crm
user=root
pwd=

三、spring.xml

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> <!-- 扫包 -->
<context:component-scan base-package="com.wql.service"/>
<context:component-scan base-package="com.wql.dao"/>

<!-- 引用jdbc.properties -->
<context:property-placeholder location="classpath:jdbc.properties"/>

<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${mySQLdriver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${user}"/>
<property name="password" value="${pwd}"/>
</bean>

<!--获取sqlSesssionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" >
<property name="dataSource" ref="dataSource"/>
<property name="mapperLocations" value="classpath:com/wql/vo/*.xml"/>
<property name="typeAliasesPackage" value="com.wql.vo"/>
</bean>

<!-- 获取SqlSessionTemplate -->
<bean class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg ref="sqlSessionFactory"></constructor-arg>
</bean>

<!-- 上传文件拦截，设置最大上传文件大小   10M=10*1024*1024(B)=10485760 bytes -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="10485760" />
</bean>

<!-- 事务管理器  -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>

<!-- 使用事务的注解模式 -->
<tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

四、springMVC.xml

<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> 
<!-- 扫包 -->
<context:component-scan base-package="com.jun.controller"/>

<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>

<!-- 访问静态资源 使用tomcat的默认的servlet-->
<mvc:annotation-driven/>

<mvc:resources location="/images/" mapping="/images/**"/>
<mvc:resources location="/imgs/" mapping="/imgs/**"/>
<mvc:resources location="/img/" mapping="/img/**"/>
<mvc:resources location="/css/" mapping="/css/**"/>
<mvc:resources location="/js/" mapping="/js/**"/>
<mvc:resources location="/easyui/" mapping="/easyui/**"/>
<mvc:resources location="/My97DatePicker/" mapping="/My97DatePicker/**"/>

</beans>

下面贴一下模型层、服务层代码，看一下在模型层是如何通过注解模式获取spring.xml中的SqlSessionFactory实例的以及在服务层如何通过注解模式达到事务配置的。

1.模型层

BaseDaoImpl.java 从下面代码可看出在BaseDaoImpl类中是通过@Autowired标识符装载spring.xml中的SqlSessionFactory实例的。

public class BaseDaoImpl<T>  {

private Class clazz;

public BaseDaoImpl(){
ParameterizedType type = (ParameterizedType)this.getClass().getGenericSuperclass();
clazz = (Class)type.getActualTypeArguments()[0];
}

@Autowired
protected SqlSessionTemplate session;

/**
* 添加
* @param obj
*/
public boolean insert(Object obj){
return session.insert(clazz.getName()+".insert" , obj)>0;
}

/**
* 修改
*/
public boolean update(Object obj){
return session.update(clazz.getName()+".update",obj)>0;
}

/**
* 删除
*/
public boolean delete(Serializable id){
return session.delete(clazz.getName()+".delete",id)>0;
}

/**
* findbyId
*/
public T findById(Serializable id){
return session.selectOne(clazz.getName()+".findById", id);
}
/**
* findAll
*/
public List<T> findAll(Map map){
return session.selectList(clazz.getName()+".findAll", map);
}
/**
* list
* @return
*/
public List<T> list(){
return session.selectList(clazz.getName()+".list");
}

/**
* 分页
* @param curPage 当前页
* @param pageRows 每页的条数
* @param map
* @return
*/
public Page getPageData(long curPage , long pageRows ,Map map){
Page page = new Page();

long count = session.selectOne(clazz.getName()+".getCount",map);//获取数据的总条数
long allPage = (count+pageRows -1)/pageRows;//根据每页的行数+总条数获取总页数

//设置当前页
if(curPage < 1)curPage = 1;//如果当前页小于1则设当前页的值为1
if(allPage > 0 && curPage > allPage ) curPage = allPage;//如果当前页大于总页数则设当前页为总页数

map.put("start", (curPage -1)* pageRows);//设置查询的起始值
map.put("stop", pageRows);//设置返回的最大条数——即每页的行数

//获取数据
List<T> dataList = session.selectList(clazz.getName()+".getDataList",map);
page.setCurPage(curPage);//当前页
page.setPageRows(pageRows);//每页的行数
page.setPageNum(allPage);//总页数
page.setDataList(dataList);//数据

return page;
}

}

OrdergoodDaoImpl.java

@Repository
public class OrdergoodDaoImpl extends BaseDaoImpl<Ordergood>{

/**
* 显示所有订单商品表（根据id查询）
* @return
*/
public List<Ordergood> listOrdergood(Map map){
return super.findAll(map);
}

/**
* 添加订单商品表
* @param ordergoods
* @return
*/
public boolean addOrdergood(List<Ordergood> ordergoods){
return session.insert(Ordergood.class.getName()+".addOrdergood", ordergoods)>0;
}

}

2.服务层

FunctionService.java 从下面代码可看出在服务层是通过@Transactional标识符来配置事务的。

@Service
@Transactional
public class FunctionService {

@Autowired
private FunctionDaoImpl functionDao;
/**
* 所有的权限
* @return
*/
public List<Function> listFunction(){
return functionDao.listFunction();
}
/**
* 父权限查询
* @param map
* @return
*/
public List<Function> listParentFunction(){
return functionDao.listParentFunction();
}
/**
* 子权限查询
* @param map
* @return
*/
public List<Function> listChildFunction(int parentid){
return functionDao.listChildFunction(parentid);
}
}