>### web.xml文件配置步驟： - 1.全局初始化參數 配置spring配置文件的位置 - 2.監聽器 IOC容器對象放到Application域中 - 3.前端控制器 dispatcherServlet - 4.處理亂碼的過濾器（一定要放在所有過濾器的最前面） - 5.配置能發送reset風格url的過濾器 ~~~ <?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"> <display-name>ssm</display-name> <!-- 1.配置監聽器。當前web應用被加載的時候 來創建spring的IOC容器對象 --> <context-param> <!-- 配置一個全局初始化參數 指定spring配置文件的位置 --> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 注冊spring監聽器 作用就是當前項目被放到服務器運行之后，會自動創建Spring IOC容器對象，然后把創建好的容器對象放到application域對象中 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 2.springmvc的前端控制器，攔截所有請求 dispatcherServlet-servlet.xml--> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spingmvc.xml</param-value> </init-param> --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--3.字符編碼過濾器，處理中文亂碼，一定要放在所有過濾器之前 --> <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> <init-param> <param-name>forceRequestEncoding</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>forceResponseEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 4、使用Rest風格的URI，將頁面普通的post請求轉為指定的delete或者put請求 --> <filter> <filter-name>HiddenHttpMethodFilter</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> </filter> <filter-mapping> <filter-name>HiddenHttpMethodFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 自動可以直接通過form表單發送put，請求。。。HttpPutFormContentFilter 前提是表單中的enctype="application/x-www-form-urlencoded" --> <!-- <filter> <filter-name>HttpPutFormContentFilter</filter-name> <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class> </filter> <filter-mapping> <filter-name>HttpPutFormContentFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> --> </web-app> ~~~