一個過濾器，jsp輸出中文頁面亂碼，中文提交後文本框裡亂碼，後臺中文變亂碼全部搞定

過濾器為下：

FilterEncoding

package struts.form;

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 FilterEncoding implements Filter 
{ 

 protected String encoding;          // 接收字元編碼
 protected boolean ignore;            // 是否忽略大小寫
 protected FilterConfig filterConfig; // 初始化配置

 public void init(FilterConfig filterConfig) throws ServletException 
 {
  // 從web.xml檔案中讀取encoding的值
  encoding = filterConfig.getInitParameter("encoding"); 
  // 從web.xml檔案中讀取ignore的值
  String value = filterConfig.getInitParameter("ignore"); 
  // 以下三種情況均為忽略大小寫
  if(value == null) 
  { 
   ignore = true; 
  }
  else if(value.equalsIgnoreCase("yes")) 
  { 
   ignore = true; 
  } 
  else if(value.equalsIgnoreCase("true")) 
  { 
   ignore = true; 
  } 
 } 
 // doFilter方法
 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException 
 {
  if(ignore || request.getCharacterEncoding() == null) 
  {
   // 如果為空先從web.xml中得到
   String encoding = selectEncoding(request); 
   if(encoding != null) 
   {
    // 設定字符集編碼
    request.setCharacterEncoding(encoding); 
   }
  }
  // 繼續執行
  chain.doFilter(request, response); 
 } 
 // 得到字元編碼
 private String selectEncoding(ServletRequest request) 
 { 
  return encoding; 
 } 
 public void destroy() 
 { 

 } 
}
 

web.xml裡配置

<filter>
 <filter-name>encoding</filter-name>
 <filter-class>
  struts.form.FilterEncoding
 </filter-class>
 <init-param>
  <param-name>encoding</param-name>
  <param-value>gbk</param-value>
 </init-param>
</filter>
<filter-mapping>
 <filter-name>encoding</filter-name>
 <url-pattern>/*</url-pattern>
</filter-mapping>
 

jsp標頭檔案

<%@ page contentType="text/html;charset=gbk"%>

//此處的charset的值要和web.xml裡的 <param-value></param-value>值一樣

這樣就可以在jsp輸入漢字不是亂碼了

如果是url的get提交引數帶中文的
可以改下面這個檔案，加入一個URIEncoding="GBK"
X:\Tomcat 5.5\conf\Server.xml

 <Connector 
        port="8080" 
        redirectPort="8443" 
        minSpareThreads="25" 
        connectionTimeout="30" 
        maxThreads="150" 
        maxSpareThreads="75" 
URIEncoding="GBK"> 
 

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