Spring MVC整理系列(02)————Spring MVC配置解析及整合Spring IOC

1、在Web.xml中配置SpringMVC

<!-- Spring主容器配置，加载ApplicationContext容器，如果整合mybatis，此文件包含mybaits配置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
<!-- Spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--Spring MVC Servlet配置，加载WebApplicationContext容器 -->
<servlet>
<servlet-name>springServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springServlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<!-- 编码过滤器 -->
<filter>
<filter-name>encodingFilter</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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

2、spring-mvc.xml配置

<!-- 加载配置属性文件-->
<context:property-placeholder ignore-unresolvable="true" location="classpath:config.properties" />
<!-- 使用Annotation自动注册Bean,只扫描@Controller -->
<context:component-scan base-package="com.test.springmvc" use-default-filters="false"><!-- base-package 如果多个，用“,”分隔 -->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- HandlerMapping无需配置，Spring MVC默认自动注册DefaultAnnotationHandlerMapping的annotation-driven的HandlerMapping和AnnotationMethodHandlerAdapter -->
<!-- 配置扩充注解驱动，将请求参数绑定到控制器参数上 -->
<mvc:annotation-driven />
<!-- REST中根据URL后缀自动判定Content-Type及相应的View -->
<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="mediaTypes" >
<map>
<entry key="xml" value="application/xml"/>
<entry key="json" value="application/json"/>
</map>
</property>
<property name="ignoreAcceptHeader" value="false"/>
<property name="favorPathExtension" value="false"/>
</bean>
<!-- 对静态资源文件的访问，避免使用DefaultAnnoationHandlerMapping 和 AnnotationMethodHandlerAdapter处理mapping到Controller的path -->
<mvc:default-servlet-handler />
<!-- 静态资源映射 -->
<mvc:resources mapping="/static/**" location="/static/" cache-period="31536000"/>
<!-- 定义视图文件解析 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 默认编码 -->
<property name="defaultEncoding" value="utf-8" />
<!-- 文件大小最大值 -->
<property name="maxUploadSize" value="10485760000" />
<!-- 内存中的最大值 -->
<property name="maxInMemorySize" value="40960" />
</bean>
<!-- 异常处理 -->
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<!-- 定义默认的异常处理页面，当该异常类型的注册时使用 -->
<property name="defaultErrorView" value="error"></property>
<!-- 定义异常处理页面用来获取异常信息的变量名，默认名为exception -->
<property name="exceptionAttribute" value="ex"></property>
<!-- 定义需要特殊处理的异常，比如自定义异常，用类名或完全路径名作为key，异常页名作为值 -->
<property name="exceptionMappings">
<props>
<prop key="com.test.springmvc.Interceptor.MyException">/error/403</prop>
</props>
</property>
</bean>
<!-- 自定义拦截器interceptor setting -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/mvc/**"/>
<mvc:exclude-mapping path="/static/**"/>
<bean class="com.test.springmvc.Interceptor.MyInterceptor"></bean>
</mvc:interceptor>
</mvc:interceptors>

自定义的异常处理类：

public class MyException extends RuntimeException {
private static final long serialVersionUID = 1L;
/** 错误Key，用于唯一标识错误类型 */
private String errorCode = null;
/**
* 构造函数
*/
public MyException() {
}
/**
* 构造函数
* @param errorCode 异常编码
*/
public MyException(String errorCode) {
this.errorCode = errorCode;
}
/**
* 重载构造函数
*/
public MyException(String errorCode, String errorMessage) {
super(errorMessage);
this.errorCode = errorCode;
}
/**
* 异常编码
* @return String
*/
public String getErrorCode() {
return this.errorCode;
}
}

自定义的拦截器：

public class MyInterceptor implements HandlerInterceptor {
@Override
public void afterCompletion(HttpServletRequest arg0,
HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
System.out.println("afterCompletion");
}
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2, ModelAndView arg3) throws Exception {
System.out.println("postHandle");
}
@Override
public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2) throws Exception {
System.out.println("preHandle");
return true;
}
}

3、整合SpringIOC和SpringMVC，配置spring主容器spring-context.xml

<?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:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util" xmlns:task="http://www.springframework.org/schema/task" 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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-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
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd"
default-lazy-init="false">
<!-- 加载配置属性文件 -->
<context:property-placeholder ignore-unresolvable="true" location="classpath:config.properties" />
<!-- 使用Annotation自动注册Bean，解决事物失效问题：在主容器中不扫描@Controller注解，在SpringMvc中只扫描@Controller注解。
-->
<context:component-scan base-package="com.mdf.sc,com.mdf.sentry"><!-- base-package 如果多个，用“,”分隔 -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- MyBatis begin -->
<!-- MyBatis end -->
</beans>

参照：http://www.admin10000.com/document/6436.html

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