编码过滤器Filter

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编码过滤器的java文件：

CharsetFilter.java：

package com.house.util;/** * @author * @version  * 创建时间：2006-12-13 15:08:35 * 类说明: */import javax.servlet.*;import javax.servlet.http.*;import java.io.IOException;public class CharsetFilter implements Filter {private String targetencoding = "UTF-8";protected FilterConfig filterConfig = null;public void destroy() {this.filterConfig = null;}public void doFilter(ServletRequest req, ServletResponse resp,FilterChain chain) throws IOException, ServletException {HttpServletRequest request = (HttpServletRequest)req;request.setCharacterEncoding(targetencoding);chain.doFilter(req,resp);}public void init(FilterConfig filterConfig) throws ServletException {this.filterConfig = filterConfig;this.targetencoding = filterConfig.getInitParameter("encoding");}}

web.xml文件配置文件：

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="3.0" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  <display-name />  <servlet>    <servlet-name>action</servlet-name>    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>    <init-param>      <param-name>config</param-name>      <param-value>/WEB-INF/struts-config.xml</param-value>    </init-param>    <init-param>      <param-name>debug</param-name>      <param-value>3</param-value>    </init-param>    <init-param>      <param-name>detail</param-name>      <param-value>3</param-value>    </init-param>    <load-on-startup>0</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>action</servlet-name>    <url-pattern>*.do</url-pattern>  </servlet-mapping>  <filter>    <filter-name>encoding</filter-name>    <filter-class>com.house.util.CharsetFilter</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>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>