随笔-Spirngmvc的总结

搭建springmvc+hibernate+sping 框架

1. 首先需要的jar报导入到项目中；

2. 配置文件；spring配置文件在web.xml里面要引入，项目启动初始化spring的控制器，spingbean的注入,?<!-- Controller方法调用规则定义 --><!-- 页面View层基本信息设定 --><!-- servlet映射列表,所有控制层Controller的servlet在这里定义 -->

   web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"?
?? ?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_2_5.xsd">

?? ?<servlet>
??????? <servlet-name>dispatcherServlet</servlet-name>
??????? <servlet-class>
??????????? org.springframework.web.servlet.DispatcherServlet
??????? </servlet-class>
??????? <init-param>
??????????? <param-name>contextConfigLocation</param-name>

????????????<!--引用一些配置文件，便于管理把dao,service,hibernate,web单独一个配置文件，另一种方式参考注1-->
??????????? <param-value>/WEB-INF/hib-config.xml,/WEB-INF/web-config.xml,/WEB-INF/service-config.xml,/WEB-INF/dao-config.xml</param-value>
??????? </init-param>
??????? <load-on-startup>1</load-on-startup>
??? </servlet>
??? <servlet-mapping>
??????? <servlet-name>dispatcherServlet</servlet-name>
??????? <url-pattern>*.do</url-pattern>
??? </servlet-mapping>
</web-app>

?

注1：利用context-param 的servlet上下文引入配置文件

<context-param>
?? <param-name>contextConfigLocation</param-name>

????<!--spring开头的配置文件-->
?? <param-value>classpath:spring-*.xml</param-value>

</context-param>

?

<servlet>
?? ??? ?<description>spring mvc servlet</description>
?? ??? ?<servlet-name>springMvc</servlet-name>
?? ??? ?<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
?? ??? ?<init-param>
?? ??? ??? ?<description>spring mvc 配置文件</description>
?? ??? ??? ?<param-name>contextConfigLocation</param-name>

????????????<!--加载扫描spring的控制器-->
?? ??? ??? ?<param-value>classpath:spring-mvc.xml</param-value>
?? ??? ?</init-param>

????????<!--项目启动实例化次servlet,就一定要有<init-param>指定一个sping的配置文件-->
?? ??? ?<load-on-startup>1</load-on-startup>
?? ?</servlet>
?? ?<servlet-mapping>
?? ??? ?<servlet-name>springMvc</servlet-name>
?? ??? ?<url-pattern>*.do</url-pattern>
?? ?</servlet-mapping>

?

web-config.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"?
?? ?xsi:schemaLocation="
http://www.springframework.org/schema/beans?
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
?? ?
?? ?<!-- Controller方法调用规则定义 -->
??? <bean id="paraMethodResolver"
????? class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
??????? <property name="paramName" value="action"/>
??????? <property name="defaultMethodName" value="list"/>
??? </bean>
??
?? <!-- 页面View层基本信息设定 -->
??? <bean id="viewResolver"
????????? class="org.springframework.web.servlet.view.InternalResourceViewResolver">
??????? <property name="viewClass"
??????????? value="org.springframework.web.servlet.view.JstlView"/>
??????? <!--<property name="prefix" value="/myjsp/"/>-->
??????? <property name="suffix" value=".jsp"/>
??? </bean>

<!-- servlet映射列表,所有控制层Controller的servlet在这里定义 -->
??? <bean id="urlMapping"
????????? class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
??????? <property name="mappings">
??????????? <props>
??????????????? <prop key="user.do">userController</prop>
??????????? </props>
??????? </property>
??? </bean>

<bean id="userController" class="com.sxt.action.UserController">
?? ?<property name="userService" ref="userService"></property>
</bean>
</beans>

hib-config.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:tx="http://www.springframework.org/schema/tx"
?? ?xmlns:context="http://www.springframework.org/schema/context"
?? ?xsi:schemaLocation="
http://www.springframework.org/schema/beans?
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/aop?
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
? http://www.springframework.org/schema/context? ?
?? http://www.springframework.org/schema/context/spring-context-2.5.xsd
">
?? ?<context:component-scan? base-package="com.sxt"/>? ?
?? ?<!-- 支持aop注解 -->
?? ?<aop:aspectj-autoproxy />
?? ?
?? ???? <!--数据源的信息可以放到properties文件夹里面，注2-->
?? ?<bean id="dataSource" ?
??????????? class="org.apache.commons.dbcp.BasicDataSource"> ?
??????????? <property name="driverClassName" value="com.mysql.jdbc.Driver"> </property> ?
??????????? <property name="url" value="jdbc:mysql://localhost:3306/myhib"></property> ?
??????????? <property name="username" value="root"></property> ?
??????????? <property name="password" value="123456"></property>
??? </bean> ?

?? <bean id="sessionFactory" ?
?????? class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">?
?????????? <property name="dataSource"> <ref bean="dataSource" /></property>
?????????? <property name="hibernateProperties"> ?
?????????????? <props> ?
????????????? ??? ?<!-- key的名字前面都要加hibernate. -->
?????????????????? <prop key="hibernate.dialect"> ?
?????????????????????? org.hibernate.dialect.MySQLDialect ?
?????????????????? </prop> ?
?????????????????? <prop key="hibernate.show_sql">true</prop>
?????????????????? <prop key="hibernate.hbm2ddl.auto">update</prop>
?????????????? </props>
?????????? </property>
?? ??? ?<property name="packagesToScan">
?? ??? ??? ?<value>com.sxt.po</value>
?? ??? ?</property>
?? </bean> ?

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate" >
?? ?<property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<!--配置一个JdbcTemplate实例--> ?
<bean id="jdbcTemplate"? class="org.springframework.jdbc.core.JdbcTemplate">? ?
???? <property name="dataSource" ref="dataSource"/>? ?
</bean>??

<!-- 配置事务管理 注3 -->
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" >
?? ?<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:annotation-driven transaction-manager="txManager" />
<aop:config>?
?? ?<aop:pointcut expression="execution(public * com.sxt.service.impl.*.*(..))" id="businessService"/>
?? ?<aop:advisor advice-ref="txAdvice" pointcut-ref="businessService" />?
</aop:config>?
<tx:advice id="txAdvice" transaction-manager="txManager" >?
?? ?<tx:attributes>?
?? ??? ?<tx:method name="find*"? read-only="true" propagation="NOT_SUPPORTED"? />?
?? ??? ?<!-- get开头的方法不需要在事务中运行 。?
?? ??? ?有些情况是没有必要使用事务的，比如获取数据。开启事务本身对性能是有一定的影响的-->?
?? ??? ?<tx:method name="*"/>??? <!-- 其他方法在实务中运行 -->?
?? ?</tx:attributes>?
</tx:advice>?

</beans>

?

Hibernate的配置主要有！！！！：

要扫描的包（hibernate注解）；

数据源；sessionFactory；

hibernateTemplate；

配置事物（获取数据不启动事务）

?

注2：

<!-- 引入属性文件 -->
<context:property-placeholder location="classpath:dbconfig.properties" />

这样获取值${jdbc.url.jeecg}

db.properties内容
hibernate.dialect=org.hibernate.dialect.MySQLDialect
validationQuery.sqlserver=SELECT 1
jdbc.url.jeecg=jdbc:mysql://localhost:3306/projectdb?useUnicode=true&characterEncoding=UTF-8
jdbc.username.jeecg=root
jdbc.password.jeecg=xlj123
jdbc.dbType=mysql

?

注3：

<!-- 配置事物管理器，在*ServiceImpl里写@Transactional就可以启用事物管理，在查找的方法加上 read-only只读，@Transactional(readOnly=true,propagation=Propagation.NOT_SUPPORTED)//查询不需要开事务-->
?? ?<bean name="transactionManager"
?? ??? ?class="org.springframework.orm.hibernate4.HibernateTransactionManager">
?? ??? ?<property name="sessionFactory" ref="sessionFactory"></property>
?? ?</bean>
?? ?<tx:annotation-driven transaction-manager="transactionManager" />

?

?

service-config.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"?
?? ?xsi:schemaLocation="
http://www.springframework.org/schema/beans?
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

?? ?<bean id="userService" class="com.sxt.service.UserService">
?? ??? ?<property name="userDao" ref="userDao"></property>
?? ?</bean>
?? ?
</beans>

dao-config.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"?
?? ?xsi:schemaLocation="
http://www.springframework.org/schema/beans?
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
?? ?
?? ?<bean id="userDao" class="com.sxt.dao.UserDao">
?? ?? <property name="hibernateTemplate" ref="hibernateTemplate"></property>
?? ?</bean>
</beans>