Filter 字符编码Filter 一
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Filter 字符编码Filter 一
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使用字符編碼Filter
package com.helloweenvsfei.filter;import java.io.IOException;import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse;public class CharacterEncodingFilter implements Filter {private String characterEncoding;private boolean enabled;@Overridepublic void init(FilterConfig config) throws ServletException {characterEncoding = config.getInitParameter("characterEncoding");enabled = "true".equalsIgnoreCase(characterEncoding.trim())|| "1".equalsIgnoreCase(characterEncoding.trim());}@Overridepublic void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {if (enabled || characterEncoding != null) {request.setCharacterEncoding(characterEncoding);response.setCharacterEncoding(characterEncoding);}chain.doFilter(request, response);}@Overridepublic void destroy() {characterEncoding = null;} }web.xml 配置如下
<filter><filter-name>characterEncodingFilter</filter-name><filter-class>com.helloweenvsfei.filter.CharacterEncodingFilter</filter-class><init-param><!-- 編碼方式 --><param-name>characterEncoding</param-name><param-value>UTF-8</param-value></init-param><init-param><!-- 是否使用編碼 --><param-name>enable</param-name><param-value>true</param-value></init-param> </filter><filter-mapping><filter-name>characterEncodingFilter</filter-name><url-pattern>/*</url-pattern> </filter-mapping>注意：頁(yè)面編碼方式必須一致。另外如果使用GET表單提交。需要修改Tomcat /conf/server.xml 里的URIEncoding 修改代碼如下
<Connector port="8080" protocol="HTTP/1.1"connectionTimeout="20000"redirectPort="8443" URIEncoding = "UTF-8"/>基本所有的javaWeb程序都用該Filter。
附：characteEncoding.jsp驗(yàn)證編碼器
1 <%@ page language="java" contentType="text/html; charset=UTF-8"%> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 6 <title>Insert title here</title> 7 <style> 8 body, input, textarea { 9 font-size: 12px; 10 } 11 textarea { 12 width: 400px; 13 height: 50px; 14 } 15 </style> 16 </head> 17 <body> 18 <pre> 19 <b>您輸入了</b>： 20 ${ param.text } 21 </pre> 22 <form action="${ param.request.requestURL }" method="post"><textarea 23 name="text">${ param.text }</textarea> <br /> 24 <input type="submit"></form> 25 26 </body> 27 </html>?
轉(zhuǎn)載于:https://www.cnblogs.com/zhaideyou/p/5914859.html
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