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  • Spring——三大框架整合

    整合原理

    整合步骤:

    1、导包

    2、单独配置Spring容器

    导入约束(spring-config.xml)

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns="http://www.springframework.org/schema/beans"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
    							http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
    							http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
    							http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">
    

    配置spring随项目启动(web.xml)

    <!-- 可以让spring容器随项目的启动而创建,随项目的关闭而销毁 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 指定加载spring配置文件的位置 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-config.xml</param-value>
    </context-param>
    

    3、单独配置struts2

    配置核心过滤器

    <!--配置struts2核心过滤器-->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    

    4、struts2与spring整合

    配置常量(Struts.xml)

    <!--将struts对象交给Spring创建-->
    <constant name="struts.objectFactory" value="spring"></constant>

    配置spring负责创建action以及组装

    spring-config.xml

    <!-- action -->
    <!-- 注意:Action对象作用范围一定是多例的.这样才符合struts2架构 -->
    <bean name="userAction" class="cn.x5456.web.action.UserAction" scope="prototype">
        <property name="userService" ref="userService"></property>
    </bean>

    Struts.xml

    <package name="crm" namespace="/" extends="struts-default">
    
        <!--配置全局异常-->
        <global-exception-mappings>
            <exception-mapping exception="java.lang.RuntimeException" result="error"></exception-mapping>
        </global-exception-mappings>
    
        <action name="UserAction_*" class="userAction" method="{1}">  <!--将class的值改为Spring管理对象的名字-->
            <result name="error" type="redirect">/login.jsp</result>
            <result name="success" type="redirect">/index.htm</result>
            <allowed-methods>login</allowed-methods>
         </action>
    </package>

    5、单独配置hibernate

    导入实体类&orm元数据

    配置文件

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE hibernate-configuration PUBLIC
    	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
    	<session-factory>
    
    		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    		 <!-- 数据库url -->
    		<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/xingedb</property>
    		 <!-- 数据库连接用户名 -->
    		<property name="hibernate.connection.username">root</property>
    		 <!-- 数据库连接密码 -->
    		<property name="hibernate.connection.password">xxx</property>
    		<!-- 数据库方言-->
    
    		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    
    		<!-- 将hibernate生成的sql语句打印到控制台 -->
    		<property name="hibernate.show_sql">true</property>
    		<!-- 将hibernate生成的sql语句格式化(语法缩进) -->
    		<property name="hibernate.format_sql">true</property>
    		<!-- 自动更新表,没有创建 -->
    		<property name="hibernate.hbm2ddl.auto">update</property>
    
    		<!--Spring会管理事务,session与线程绑定,所以要注释掉************************-->
    		<!--事务隔离级别-->
    		<!--<property name="hibernate.connection.isolation">4</property>-->
    		<!--session与线程绑定-->
    		<!--<property name="hibernate.current_session_context_class">thread</property>-->
    		
    		<!-- 引入orm元数据,路径书写: 填写src下的路径 -->
    		<mapping resource="cn/x5456/domain/Customer.hbm.xml" />
    		<mapping resource="cn/x5456/domain/LinkMan.hbm.xml" />
    		<mapping resource="cn/x5456/domain/User.hbm.xml" />
    		<mapping resource="cn/x5456/domain/Role.hbm.xml" />
    
    	</session-factory>
    </hibernate-configuration>
    

    6、spring整合hibernate

    将sessionFactory对象交给spring容器管理(此时可以不要hibernate.xml配置文件)

      <!--配置SessionFactory到容器中-->
        <bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
    
            <!-- 配置hibernate基本信息 -->
            <property name="hibernateProperties">
                <props>
                    <!--  必选配置 -->
                    <prop key="hibernate.connection.driver_class" >com.mysql.jdbc.Driver</prop>
                    <prop key="hibernate.connection.url" >jdbc:mysql:///xingedb</prop>
                    <prop key="hibernate.connection.username" >root</prop>
                    <prop key="hibernate.connection.password" >xxx</prop>
                    <prop key="hibernate.dialect" >org.hibernate.dialect.MySQLDialect</prop>
    
                    <!--  可选配置 -->
                    <prop key="hibernate.show_sql" >true</prop>
                    <prop key="hibernate.format_sql" >true</prop>
                    <prop key="hibernate.hbm2ddl.auto" >update</prop>
                </props>
            </property>
            <!-- 引入orm元数据,指定orm元数据所在的包路径,spring会自动读取包中的所有配置 -->
            <property name="mappingDirectoryLocations" value="classpath:cn/x5456/domain" ></property>
        </bean>

    7、spring整合c3p0连接池

    准备db.properties

    #加一个(任意)前缀,防止与关键字冲突
    jdbc.jdbcUrl=jdbc:mysql:///xingedb
    jdbc.driverClass=com.mysql.jdbc.Driver
    jdbc.user=root
    jdbc.password=xxx

    配置文件

    <!--1.设置读取db.properties文件-->
    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
    
    <!--2.设置连接池-->
    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="DriverClass" value="${jdbc.driverClass}"></property>
        <property name="JdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="User" value="${jdbc.user}"></property>
        <property name="Password" value="${jdbc.password}"></property>
    </bean>
    
    
    <!--配置SessionFactory到容器中-->
    <bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
    
        <!--3.将连接池注入sessionFactory-->
        <property name="dataSource" ref="dataSource"></property>
    
        <!-- 配置hibernate基本信息 -->
        <property name="hibernateProperties">
            <props>
                <!--  必选配置,由于使用连接池(在连接池中配置),就不用这4项了 -->
                <!--<prop key="hibernate.connection.driver_class" >com.mysql.jdbc.Driver</prop>-->
                <!--<prop key="hibernate.connection.url" >jdbc:mysql:///xingedb</prop>-->
                <!--<prop key="hibernate.connection.username" >root</prop>-->
                <!--<prop key="hibernate.connection.password" >710130520a</prop>-->
                <prop key="hibernate.dialect" >org.hibernate.dialect.MySQLDialect</prop>
    
                <!--  可选配置 -->
                <prop key="hibernate.show_sql" >true</prop>
                <prop key="hibernate.format_sql" >true</prop>
                <prop key="hibernate.hbm2ddl.auto" >update</prop>
            </props>
        </property>
        <!-- 引入orm元数据,指定orm元数据所在的包路径,spring会自动读取包中的所有配置 -->
        <property name="mappingDirectoryLocations" value="classpath:cn/x5456/domain" ></property>
    </bean>

    8、spring整合hibernate环境操作数据库

    查询方法:

    public class UserDaoImpl extends HibernateDaoSupport implements UserDao {  // 通过集成HibernateDaoSupport,获取HibernateTemplate
    
        
        public User getUserByUsercode(String user_code) {
         // 方法一:hql查询
            User u = super.getHibernateTemplate().execute(new HibernateCallback<User>() {
                @Override
                public User doInHibernate(Session session) throws HibernateException {
    
                    String hql = "from User where user_code=?";
                    Query query = session.createQuery(hql);
                    query.setParameter(0, user_code);
                    User u = (User) query.uniqueResult();
    
                    return u;
                }
            });
    
            return u;
    
            // 方法二:Criteria查询
            DetachedCriteria dc = DetachedCriteria.forClass(User.class);    // 离线对象
    
            dc.add(Restrictions.eq("user_code",user_code));
    
            List<User> list = (List<User>) super.getHibernateTemplate().findByCriteria(dc);  // 只返回list
    
            if (list!=null&&list.size()>0){
                return list.get(0);
            }else {
                return null;
            }
        }
    }

    需要提供sessionfactory对象

    <bean name="userDao" class="cn.x5456.dao.impl.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    9、Hibernate版AOP事务

    核心事务管理器(只有这个和JDBC版<注入连接池>不同)

    <!-- 核心事务管理器 -->
    <bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager" >
        <property name="sessionFactory" ref="sessionFactory" ></property>
    </bean>

    方法一:配置通知 并 织入

    <!-- 配置通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager" >
        <tx:attributes>
            <tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false"/>
            <tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
            <tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
            <tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
            <tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
            <tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
            <tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
            <tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
        </tx:attributes>
    </tx:advice>
    <!-- 配置将通知织入目标对象,配置切点,配置切面 -->
    <aop:config>
        <aop:pointcut expression="execution(* cn.x5456.service.impl.*ServiceImpl.*(..))" id="txPc"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
    </aop:config>

    方法二:配置注解事务

    <!-- 开启注解事务,一定要开启注解扫描:<context:component-scan base-package="xxx.xxx.xxx"/> -->
    <tx:annotation-driven transaction-manager="transactionManager" />

    10、扩大session作用范围

    为了避免使用懒加载时出现no-session问题.需要扩大session的作用范围

    配置filter

    <!-- 扩大session作用范围
    注意: 任何filter一定要在struts的filter之前调用(因为如果Struts的拦截器没有放行,就根本走不了我们的filter)
    -->
    <filter>
        <filter-name>openSessionInView</filter-name>
        <filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
    </filter>
    <!--配置struts2核心过滤器-->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    
    <filter-mapping>
        <filter-name>openSessionInView</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
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  • 原文地址:https://www.cnblogs.com/x54256/p/8494176.html
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