ssm搭建過程

1. 需要的jar包

1. spring（包括springmvc）
2. mybatis
3. mybatis-spring整合包
4. 數據庫驅動
5. 第三方連接池。
6. Json依賴包Jackson

2.整合思路

• Dao層:

1. sqlMapConfig.xml
2. applicationContext-dao.xml
   1.數據庫連接池
   2.sessionFactory
   3.配置mapper文件掃描器,使用動態代理開發

*Service層

1. applicationContext-service.xml包掃描器，掃描@service註解的類。
2. applicationContext-trans.xml配置事務。

Controller層
1、Springmvc.xml
a) 包掃描器，掃描@Controller註解的類。
b) 配置註解驅動
c) 配置視圖解析器

Web.xml文件：
1、配置spring監聽器
2、配置前端控制器。

具體配置操作流程:

1.創建動態web工程

2.加入jar包

3.加入配置文件

1. 創建config資源文件夾，在裏面創建mybatis和spring文件夾
2. SqlMapConfig.xml 配置
   空文件即可

 
<?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>

3. applicationContext-dao.xml
   需要配置：
   加載properties文件，數據源，SqlSessionFactory，Mapper掃描

 <?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">
 
    <!-- 配置 讀取properties文件 jdbc.properties -->
    <context:property-placeholder location="classpath:jdbc.properties" />
 
    <!-- 配置 數據源 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
       <property name="driverClassName" value="${jdbc.driver}" />
       <property name="url" value="${jdbc.url}" />
       <property name="username" value="${jdbc.username}" />
       <property name="password" value="${jdbc.password}" />
    </bean>
 
    <!-- 配置SqlSessionFactory -->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
       <!-- 設置MyBatis核心配置文件 -->
       <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
       <!-- 設置數據源 -->
       <property name="dataSource" ref="dataSource" />
    </bean>
 
    <!-- 配置Mapper掃描 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
       <!-- 設置Mapper掃描包 -->
       <property name="basePackage" value="cn.itcast.crm.mapper" />
    </bean>
</beans>

4. jdbc.properties
   配置數據庫信息

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

5. log4j.properties
   配置日誌信息

# 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

6. applicationContext-service.xml
   配置service掃描

<?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">
 
    <!-- 配置Service掃描 -->
    <context:component-scan base-package="cn.itcast.crm.service" />
</beans>

7. applicationContext-trans.xml
   配置事務管理：事務管理器、通知、切面

<?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">
 
    <!-- 事務管理器 -->
    <bean id="transactionManager"    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
       <!-- 數據源 -->
       <property name="dataSource" ref="dataSource" />
    </bean>
 
    <!-- 通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
       <tx:attributes>
           <!-- 傳播行爲 -->
           <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:method name="query*" propagation="SUPPORTS" read-only="true" />
       </tx:attributes>
    </tx:advice>
 
    <!-- 切面 -->
    <aop:config>
       <aop:advisor advice-ref="txAdvice"
           pointcut="execution(* cn.itcast.crm.service.*.*(..))" />
    </aop:config>
 
</beans>

8. Springmvc.xml
   配置SpringMVC表現層：Controller掃描、註解驅動、視圖解析器

<?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: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://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!-- 配置Controller掃描 -->
    <context:component-scan base-package="cn.itcast.crm.controller" />
 
    <!-- 配置註解驅動 -->
    <mvc:annotation-driven />
 
    <!-- 配置視圖解析器 -->
    <bean  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <!-- 前綴 -->
       <property name="prefix" value="/WEB-INF/jsp/" />
       <!-- 後綴 -->
       <property name="suffix" value=".jsp" />
    </bean>
</beans>
 

9. Web.xml
   配置Spring、SpringMVC、解決post亂碼問題

<?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>boot-crm</display-name>
    <welcome-file-list>
       <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
 
    <!-- 配置spring -->
    <context-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>classpath:spring/applicationContext-*.xml</param-value>
    </context-param>
 
    <!-- 配置監聽器加載spring -->
    <listener>
       <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
 
    <!-- 配置過濾器，解決post的亂碼問題 -->
    <filter>
       <filter-name>encoding</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>encoding</filter-name>
       <url-pattern>/*</url-pattern>
    </filter-mapping>
 
    <!-- 配置SpringMVC -->
    <servlet>
       <servlet-name>boot-crm</servlet-name>
       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
       <init-param>
           <param-name>contextConfigLocation</param-name>
           <param-value>classpath:spring/springmvc.xml</param-value>
       </init-param>
       <!-- 配置springmvc什麼時候啓動，參數必須爲整數 -->
       <!-- 如果爲0或者大於0，則springMVC隨着容器啓動而啓動 -->
       <!-- 如果小於0，則在第一次請求進來的時候啓動 -->
       <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
       <servlet-name>boot-crm</servlet-name>
       <!-- 所有的請求都進入springMVC -->
       <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

至此 , 所有配置結束, 但靜態資源也被攔截了, 我們需要放行

解決方案：

1. 在springmvc.xml中配置

    <!-- 解決靜態資源無法被springMVC處理的問題 -->
    <mvc:default-servlet-handler />

2. 修改web.xml，讓所有以action結尾的請求都進入SpringMVC

  <servlet-mapping>
       <servlet-name>boot-crm</servlet-name>
       <!-- 所有的請求都進入springMVC -->
       <url-pattern>*.action</url-pattern>
    </servlet-mapping>