>### web.xml文件配置步骤： - 1.全局初始化参数 配置spring配置文件的位置 - 2.监听器 IOC容器对象放到Application域中 - 3.前端控制器 dispatcherServlet - 4.处理乱码的过滤器（一定要放在所有过滤器的最前面） - 5.配置能发送reset风格url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"> <display-name>ssm</display-name> <!-- 1.配置监听器。当前web应用被加载的时候 来创建spring的IOC容器对象 --> <context-param> <!-- 配置一个全局初始化参数 指定spring配置文件的位置 --> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 注册spring监听器 作用就是当前项目被放到服务器运行之后，会自动创建Spring IOC容器对象，然后把创建好的容器对象放到application域对象中 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 2.springmvc的前端控制器，拦截所有请求 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.字符编码过滤器，处理中文乱码，一定要放在所有过滤器之前 --> <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风格的URI，将页面普通的post请求转为指定的delete或者put请求 --> <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> <!-- 自动可以直接通过form表单发送put，请求。。。HttpPutFormContentFilter 前提是表单中的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> ~~~