框架整合

框架整合

Dao层

• mybatis整合spring,通过spring管理SqlSessionFactory、mapper代理对象，需要mybatis和spring的整合包，有spring创建数据库连接池
• POJO
• Mapper映射文件、Mapper接口
• SqlMapConfig.xml
• applicationContext-dao.xml(数据库连接池)

Service层

• 所有的实现类都放到spring容器中管理。并有spring管理事物；发布dubbo服务
• Service 接口
• Service实现类
• applicationContext-Service.xml
• applicationContext-trans.xml

web.xml配置：配置加载spring容器

表现层

• Springmvc整合spring框架，由springmvc管理controller;引入Dubbo服务

• springmvc.xml

• Controller

web.xml的配置：前端控制器的配置，配置URL拦截形式.

Druid 连接池 不用c3p0.

Druid是目前最好的数据库连接池，在功能、性能、扩展性方面，都超过其他数据库连接池，包括DBCP、C3P0、BoneCP、Proxool、JBoss DataSource。
Druid已经在阿里巴巴部署了超过600个应用，经过多年多生产环境大规模部署的严苛考验。

Service

SqlMapConfig.xml

---

    <?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>

  </configuration>

---

Spring整合Mybatis

---

    <?xml version="1.0" encoding="UTF-8"?>
 <beans 

    xmlns="http://www.springframework.org/
  schema/beans"
xmlns:context="http://www.springframework
   .org/schema/context" 
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schem
a/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-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
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">

<!-- 数据库连接池 -->
<!-- 加载配置文件 -->
<context:property-placeholder     
    location="classpath:properties/*.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource" 
  class="com.alibaba.druid.pool.DruidDataSource"
    destroy-method="close">
    <property name="url" value="${jdbc.url}" />
    <property name="username" 
   value="${jdbc.username}" />
    <property name="password" 
  value="${jdbc.password}" />
    <property name="driverClassName" 
  value="${jdbc.driver}" />
    <property name="maxActive" value="10" />
    <property name="minIdle" value="5" />
</bean>
<!-- 让spring管理sqlsessionfactory 使用mybatis和
  spring整合包中的 -->
<bean id="sqlSessionFactory" 
class="org.mybatis.spring.SqlSessionFactoryBean">
    <!-- 数据库连接池 -->
    <property name="dataSource" 
  ref="dataSource" />
    <!-- 加载mybatis的全局配置文件 -->
    <property name="configLocation" 
 value="classpath:mybatis/SqlMapConfig.xml" />
</bean>
     <bean class="org.mybatis.spring.mapper
     .MapperScannerConfigurer">
    <property name="basePackage" 
   value="com.taotao.mapper" />
</bean>
  </beans>

---

db.properties

---

  jdbc.driver=com.mysql.jdbc.Driver
  jdbc.url=jdbc:mysql://localhost:3306/taotao?      
  characterEncoding=utf-8
  jdbc.username=root
  jdbc.password=itcast

---

applicationContext-service

---

 <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" 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-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
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">

<context:component-scan base-package="com.taotao.service"></context:component-scan>

<!-- 使用dubbo发布服务 -->
<!-- 提供方应用信息，用于计算依赖关系 -->
<dubbo:application name="taotao-manager" />
<dubbo:registry protocol="zookeeper" address="192.168.25.128:2181" />
<!-- 用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" port="20880" />
<!-- 声明需要暴露的服务接口 -->
<!--<dubbo:service interface="com.taotao.service.TestService" ref="testServiceImpl" />-->

 </beans>

---

applicationContext-transaction.xml

---

    <beans       xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
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-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
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<!-- 事务管理器 -->
<bean id="transactionManager"
    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <!-- 数据源 -->
    <property name="dataSource" ref="dataSource" />
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <!-- 传播行为 -->
        <tx:method name="save*" propagation="REQUIRED" />
        <tx:method name="insert*" propagation="REQUIRED" />
        <tx:method name="add*" propagation="REQUIRED" />
        <tx:method name="create*" propagation="REQUIRED" />
        <tx:method name="delete*" propagation="REQUIRED" />
        <tx:method name="update*" propagation="REQUIRED" />
        <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
        <tx:method name="select*" propagation="SUPPORTS" read-only="true" />
        <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
    </tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
    <aop:advisor advice-ref="txAdvice"
        pointcut="execution(* com.taotao.service.*.*(..))" />
</aop:config>
  </beans>

---

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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
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>taotao-manager</display-name>
<!-- 加载spring容器 -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext-*.xml</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
  </web-app>

---