一個解決Jsp/serlvet中的中文問題的程序

(1)第一種方法,直接使用getBytes()函數

package Bean;

public class TranStrType
{
 public static String ToISO(String str) throws Exception
    {
       try
       {
   if(str==null)
   {
    return null;
   }
   else
   {
    str = new String(str.getBytes("gb2312"),"ISO8859_1");
    return str;
   }
  }
  catch(Exception e)
  {
   return null;
  }
 }
 
 public static String ToGB(String str) throws Exception
    {
       try
       {
   if(str==null)
   {
    return null;
   }
   else
   {
    str = new String(str.getBytes("ISO8859_1"),"gb2312");
    return str;
   }
  }
  catch(Exception e)
  {
   return null;
  }
 }
}

(2)另外，“Servlet API 2.3 提供一個新的函數HttpServeletRequest.setCharacterEncoding ”我試過，挺好用的，tomcat4.0.1。

方法是配置一個filter，對request進行過濾處理，過濾器如下：

[code]

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;

import javax.servlet.UnavailableException;

/**

* <p>Title: 中文問題</p>

* <p>Description: 中文問題</p>

* <p>Copyright: Copyright (c) 2002 writeonce</p>

* <p>Company: </p>

* @author writeonce

* @version 1.0

*/

 

 

 

public class EncodingFilter implements Filter {

protected String encoding = null;

protected FilterConfig filterConfig = null;

public void destroy() {

this.encoding = null;

this.filterConfig = null;

 

 

 

}

public void doFilter(ServletRequest request, ServletResponse response,

FilterChain chain)

throws IOException, ServletException {

// Select and set (if needed) the character encoding to be used

String encoding = selectEncoding(request);

if (encoding != null)

{

request.setCharacterEncoding(encoding);

}

// Pass control on to the next filter

chain.doFilter(request, response);

}

public void init(FilterConfig filterConfig) throws ServletException {

 

 

 

this.filterConfig = filterConfig;

this.encoding = filterConfig.getInitParameter("encoding");

}

protected String selectEncoding(ServletRequest request) {

 

 

 

return (this.encoding);

 

 

 

}

 

 

 

 

 

 

}

同時，在web.xml中加入如下配置：

[code]

<filter>

<filter-name>Set Character Encoding</filter-name>

<filter-class>EncodingFilter</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>GBK</param-value>

</init-param>

</filter>

 

 

 

<filter-mapping>

<filter-name>Set Character Encoding</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

[/code]