Struts1.2文件下载(解决中文乱码)

JSP页面写的比较简单就是一个提交按纽，只为演示

download.jsp

<% ... @ page language="java" pageEncoding="utf-8" %>

<% ... @ taglib uri="http://struts.apache.org/tags-bean" divfix="bean"  %>
<% ... @ taglib uri="http://struts.apache.org/tags-html" divfix="html"  %>
<% ... @ taglib uri="http://struts.apache.org/tags-logic" divfix="logic"  %>
<% ... @ taglib uri="http://struts.apache.org/tags-tiles" divfix="tiles"  %>


<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" >
< html:html  lang ="true" >
   < head >
     < html:base  />
    
     < title > 下载 </ title >

   </ head >
  
   < body >
     < html:form  action ="download.do"  method ="post" >
    
         < html:submit  value ="下载文件" ></ html:submit >
        
     </ html:form >
   </ body >
</ html:html >

 Action

 

/**/ /*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package  com.struts.action;

import  java.io.FileInputStream;
import  java.io.FileNotFoundException;
import  java.io.IOException;
import  java.io.InputStream;
import  java.io.OutputStream;
import  java.io.UnsupportedEncodingException;
import  java.net.URLEncoder;

import  javax.servlet.http.HttpServletRequest;
import  javax.servlet.http.HttpServletResponse;
import  org.apache.struts.action.Action;
import  org.apache.struts.action.ActionForm;
import  org.apache.struts.action.ActionForward;
import  org.apache.struts.action.ActionMapping;
import  com.struts.form.DownloadForm;

/** */ /** 
 * MyEclipse Struts
 * Creation date: 03-29-2008
 * 
 * XDoclet definition:
 * @struts.action path="/download" name="downloadForm" input="/form/download.jsp" scope="request" validate="true"
 */
public   class  DownloadAction  extends  Action  ... {
    /**//*
     * Generated Methods
     */

    /** *//** 
     * Method execute
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return ActionForward
     * @throws UnsupportedEncodingException 
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException ...{
        DownloadForm d = (DownloadForm) form;
        
        
        
        InputStream is=null;
        OutputStream os=null;
        String path = "JAVA问题.doc";
        
        /**//*解决中文乱码问题，设置后产生一个新的String对象此对象以改变了编码*/
        String newpath=URLEncoder.encode(path,"utf-8");
        
        byte[] b=new byte[1024];
        int i=0;
        
            try ...{
                
                is = new FileInputStream("d:/"+path);
                os = response.getOutputStream();
                /**//*在页面上弹出一个下在窗口*/
                response.setContentType("application/x-msdownload");
                /**//*设置报头信息，弹出窗口中显示的文件名    newpath*/
                response.setHeader("Content-Disposition", "Disposition; filename="+newpath);
                /**//*具体的输入输出流操作*/
                while((i=is.read(b))!=-1)...{
                    os.write(b, 0, i);
                    i=0;
                }
                os.flush();
            } catch (IOException e) ...{
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally...{
                try ...{
                    os.close();
                    is.close();
                } catch (IOException e) ...{
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                
            }
            
            
            
            
        
        
        
        
        return null;
    }
}