頁面一開始進去action，action負責把file文件夾下的所有文件讀入一個ArrayList中
Action代碼如下：
ArrayList list = new ArrayList();
String path=request.getRealPath("/")+"file";
String FullPath;
//System.out.println(path);
myDir=new File(path);
list.clear();
contents=myDir.listFiles();
for(int i=0;i<contents.length;i++){
FullPath=contents[i].getName();
list.add(FullPath);
//System.out.println(FullPath);
}
request.setAttribute("list",list);
ActionForward forward=new ActionForward("/download.jsp");
return forward;
然後進入download.jsp中，這個頁面主要負責把所有文件顯示，並提供下載連接，代碼如下：
<%@ page language="java" contentType="text/html;charset=GBK" import="java.util.ArrayList"%>
<head>
<style>
</style>
</head>
<body>
<%ArrayList list=(ArrayList)request.getAttribute("list");
for(int i=0;i<list.size();i++)
{
String a=java.net.URLEncoder.encode((String)list.get(i));
out.print("<a href=./loaded.do?name="+a+">"+list.get(i)+"</a><br>");
}
%>
</body>
</html>
注意，下劃線畫中的代碼的作用，就是解決問題的所在。
接下來可以直接傳入到loadedaction中，也可以通過一個form,我演示的是通過一個form
Form代碼如下
package org.aeolus.struts.form;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public class LoadForm extends ActionForm {
/*
* Generated Methods
*/
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
接下來就是action的代碼
LoadForm doc=(LoadForm)form;
String docName = new String(doc.getName().getBytes("8859_1"));
File f;
if(docName!=""){
String docFullPath=request.getRealPath("/");
f = new File(docFullPath+"file"+docName);
response.reset();
response.setContentType("application/x-msdownload;charset=GBK");
System.out.print(response.getContentType());
response.setCharacterEncoding("UTF-8");
docName=java.net.URLEncoder.encode(docName,"UTF-8");
response.setHeader("Content-Disposition", "p_w_upload; filename=" +new String(docName.getBytes("UTF-8"),"GBK"));
BufferedInputStream br = new BufferedInputStream(new FileInputStream(f));
byte[] buf = new byte[1024];
int len = 0;
OutputStream out = response.getOutputStream();
while((len = br.read(buf)) >0)
out.write(buf,0,len);
out.close();
response.wait();
ActionForward forward=new ActionForward("/download.jsp");
return forward;
}
return null;
注意，下劃線畫中的代碼的作用，就是解決問題的所在。
說明一下
response.setCharacterEncoding("UTF-8");
docName=java.net.URLEncoder.encode(docName,"UTF-8");
response.setHeader("Content-Disposition", "p_w_upload; filename=" +new String(docName.getBytes("UTF-8"),"GBK"));
如果不這樣做你將要下載的文件名是亂碼。
Struts實現文件下載中文亂碼解決方案
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