SSM 整合

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分为三层：

DAO层：负责与数据源进行交互

Service：业务处理层，也可称为服务层，对上层提供统一接口的服务。

Controller: 控制器层，负责处理来自客户端的请求。

通用配置：

db.properties 数据库配置

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/crm?characterEncoding=utf-8

jdbc.username=root

jdbc.password=admin

log4j.properties 日志配置

# Global logging configuration

log4j.rootLogger=DEBUG, stdout

# Console output...

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

Dao：

ApplicationContext-dao.xml 分层的Spring配置文件

1.配置数据源

2.创建mybatis会话工厂

3.扫描dao层接口

<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd

    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd

    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

<!-- 加载配置文件 -->

<context:property-placeholder location="classpath:db.properties" />

<!-- 数据库连接池 -->

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"

destroy-method="close">

<property name="driverClassName" value="${jdbc.driver}" />

<property name="url" value="${jdbc.url}" />

<property name="username" value="${jdbc.username}" />

<property name="password" value="${jdbc.password}" />

<property name="maxActive" value="10" />

<property name="maxIdle" value="5" />

</bean>

<!-- mapper配置 -->

<!-- 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:SqlMapConfig.xml" />

</bean>

<!-- 配置Mapper扫描器 -->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="com.witwicky.dao" />

</bean>

</beans>

SQLMapConfig.xml mybatis 配置文件

<?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>

Service

ApplicationContext-service.xml 扫描Service类

<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd

    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

http://www.springframework.org/schema/tx

http://www.springframework.org/schema/tx/spring-tx-4.0.xsd

    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

<!-- @Service扫描 -->

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

</beans>

ApplicationContext-transcation.xml spring事物配置

<?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:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd

    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

http://www.springframework.org/schema/tx

http://www.springframework.org/schema/tx/spring-tx-4.0.xsd

    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.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="delete*" propagation="REQUIRED" />

<tx:method name="update*" propagation="REQUIRED" />

<tx:method name="find*" 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.witwicky.service.*.*(..))" />

</aop:config>

</beans>

Controller

SpringMVC.xml springMVC核心配置文件

1.组件扫描 用于扫描controller类

2.注解驱动 用户注册 处理器适配器和映射器适配器

3.试图解析器

4.配置参数转换器 如：string->date类型的转换

<?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:p="http://www.springframework.org/schema/p"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

<!-- @Controller注解扫描 -->

<context:component-scan base-package="com.witwicky.controller"></context:component-scan>

<!-- 注解驱动: 替我们显示的配置了最新版的注解的处理器映射器和处理器适配器 -->

<mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>

<!-- 配置视图解析器 作用:在controller中指定页面路径的时候就不用写页面的完整路径名称了,可以直接写页面去掉扩展名的名称 -->

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<!-- 真正的页面路径 = 前缀 + 去掉后缀名的页面名称 + 后缀 -->

<!-- 前缀 -->

<property name="prefix" value="/WEB-INF/jsp/"></property>

<!-- 后缀 -->

<property name="suffix" value=".jsp"></property>

</bean>

<!-- 配置自定义转换器 注意: 一定要将自定义的转换器配置到注解驱动上 -->

<bean id="conversionService"

class="org.springframework.format.support.FormattingConversionServiceFactoryBean">

<property name="converters">

<set>

<!-- 指定自定义转换器的全路径名称 -->

<bean

class="com.witwicky.controller.convert.CustomGlobalStrToDateConverter" />

</set>

</property>

</bean>

</beans>

web.xml

spring监听器 用于服务器启动时同时启动spring

springMVC请求处理器 DispatchServlet

统一编码的过滤器

<?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">

<!-- 加载spring容器 -->

<context-param>

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

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

</context-param>

<listener>

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

</listener>

<!-- springmvc前端控制器 -->

<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>

<!-- 在tomcat启动的时候就加载这个servlet -->

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

</servlet>

<servlet-mapping>

<servlet-name>springMvc</servlet-name>

<!-- *.action 代表拦截后缀名为.action结尾的 / 拦截所有但是不包括.jsp /* 拦截所有包括.jsp -->

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

</servlet-mapping>

<!-- 配置Post请求乱码 -->

<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>

</web-app>