SSM配置applicationContext.xml, springMVC.xml与web.xml的要点

springMVC.xml配置

springMVC.xml一般主要配置Controller的组件扫描器和视图解析器

Example:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:context="http://www.springframework.org/schema/context"
 5        xmlns:mvc="http://www.springframework.org/schema/mvc"
 6        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 7         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
 8         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
 9  
10     <!--启动注解识别-->
11     <context:annotation-config/>
12  
13     <context:component-scan base-package="com.how2java.tmall.controller">
14         <context:include-filter type="annotation"
15                                 expression="org.springframework.stereotype.Controller"/>
16     </context:component-scan>
17  
18     <mvc:annotation-driven />
19  
20     <!--开通静态资源的访问-->
21     <mvc:default-servlet-handler />
22  
23     <!-- 视图定位 -->
24     <bean
25             class="org.springframework.web.servlet.view.InternalResourceViewResolver">
26         <property name="viewClass"
27                   value="org.springframework.web.servlet.view.JstlView" />
28         <property name="prefix" value="/WEB-INF/jsp/" />
29         <property name="suffix" value=".jsp" />
30     </bean>
31  
32     <!-- 对上传文件的解析-->
33     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
34 </beans>

applicationContext.xml配置（需在web.xml文件加<listener>）

Example:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:tx="http://www.springframework.org/schema/tx"
 5        xmlns:context="http://www.springframework.org/schema/context"
 6        xsi:schemaLocation="http://www.springframework.org/schema/context 
 7        http://www.springframework.org/schema/context/spring-context-3.0.xsd
 8         http://www.springframework.org/schema/beans 
 9      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
10      http://www.springframework.org/schema/tx 
11      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
12 
13     <context:annotation-config />
14     <context:component-scan base-package="com.how2java.tmall.service" />
15 
16     <!-- 导入数据库配置文件 -->
17     <context:property-placeholder location="classpath:jdbc.properties"/>
18     <!-- 配置数据库连接池 -->
19     <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
20         <!-- 基本属性 url、user、password -->
21         <property name="url" value="${jdbc.url}" />
22         <property name="username" value="${jdbc.username}" />
23         <property name="password" value="${jdbc.password}" />
24 
25         <!-- 配置初始化大小、最小、最大 -->
26         <property name="initialSize" value="1" />
27         <property name="minIdle" value="1" />
28         <property name="maxActive" value="20" />
29 
30         <!-- 配置获取连接等待超时的时间 -->
31         <property name="maxWait" value="60000" />
32 
33         <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
34         <property name="timeBetweenEvictionRunsMillis" value="60000" />
35 
36         <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
37         <property name="minEvictableIdleTimeMillis" value="300000" />
38 
39         <property name="validationQuery" value="SELECT 1" />
40         <property name="testWhileIdle" value="true" />
41         <property name="testOnBorrow" value="false" />
42         <property name="testOnReturn" value="false" />
43 
44         <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
45         <property name="poolPreparedStatements" value="true" />
46         <property name="maxPoolPreparedStatementPerConnectionSize"
47                   value="20" />
48     </bean>
49 
50     <!--Mybatis的SessionFactory配置-->
51     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
52         <property name="typeAliasesPackage" value="com.how2java.tmall.pojo" />
53         <property name="dataSource" ref="dataSource"/>
54         <property name="mapperLocations" value="classpath:mapper/*.xml"/>
55         <!-- 分页插件 -->
56         <property name="plugins">
57             <array>
58                 <bean class="com.github.pagehelper.PageInterceptor">
59                     <property name="properties">
60                         <value>
61                         </value>
62                     </property>
63                 </bean>
64             </array>
65         </property>
66     </bean>
67 
68     <!--Mybatis的Mapper文件识别-->
69     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
70         <property name="basePackage" value="com.how2java.tmall.mapper"/>
71     </bean>
72     
73     <!--事务管理 -->
74     <tx:annotation-driven transaction-manager="transactionManager"/>
75     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
76         <property name="dataSource" ref="dataSource"/>
77     </bean>
78 
79 </beans>

web.xml文件配置

在web.xml文件里，将springMVC.xml和applicationContext.xml一起引入

Example:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3          xmlns="http://java.sun.com/xml/ns/javaee"
 4          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 5          version="2.5">
 6 
 7   <!-- spring的配置文件-->
 8   <context-param>
 9     <param-name>contextConfigLocation</param-name>
10     <param-value>classpath:applicationContext.xml</param-value>
11   </context-param>
12   <listener>
13     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
14   </listener>
15 
16   <!--中文字符编码过滤器-->
17   <filter>
18     <filter-name>CharacterEncodingFilter</filter-name>
19     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
20     <init-param>
21       <param-name>encoding</param-name>
22       <param-value>utf-8</param-value>
23     </init-param>
24   </filter>
25   <filter-mapping>
26     <filter-name>CharacterEncodingFilter</filter-name>
27     <url-pattern>/*</url-pattern>
28   </filter-mapping>
29 
30   <!-- spring mvc核心：分发servlet -->
31   <servlet>
32     <servlet-name>mvc-dispatcher</servlet-name>
33     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
34     <!-- spring mvc的配置文件 -->
35     <init-param>
36       <param-name>contextConfigLocation</param-name>
37       <param-value>classpath:springMVC.xml</param-value>
38     </init-param>
39     <load-on-startup>1</load-on-startup>
40   </servlet>
41   <servlet-mapping>
42     <servlet-name>mvc-dispatcher</servlet-name>
43     <url-pattern>/</url-pattern>
44   </servlet-mapping>
45 
46 </web-app>

Written on Oct. 14th, 2019

SSM配置applicationContext.xml, springMVC.xml与web.xml的要点

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