JavaWeb利用struts实现文件下载时改变文件名称

先看看效果图：

package com.fenghuo.struts.download;

import java.net.urlencoder;
import java.util.map;

import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;

import org.apache.struts.action.actionform;
import org.apache.struts.action.actionforward;
import org.apache.struts.action.actionmapping;
import org.apache.struts.actions.downloadaction;

import com.fenghuo.music.util.fileutils;

public class download extends downloadaction {

@override
protected streaminfo getstreaminfo(actionmapping mapping, actionform form,
httpservletrequest request, httpservletresponse response)
throws exception {
//获取资源文件的名称
string resname = request.getparameter("resname");

//利用struts下载资源
return new downloadaction.resourcestreaminfo("audio/x-mpeg", this
.getservlet().getservletcontext(), "/resource/music/" + resname);
}

@override
public actionforward execute(actionmapping mapping, actionform form,
httpservletrequest request, httpservletresponse response)
throws exception {
//向浏览器发送消息头，使文件以附件的方式打开，并找到资源名对应的文件名称发送给浏览器
string resname = request.getparameter("resname");

fileutils fu = new fileutils(this.getservlet().getservletcontext());
map<string,string> musmap = fu.getmusmap();
string name = musmap.get(resname);

//同时对文件名进行编码。在firefox下还是有乱码，不明白原因，望指教。
response.setheader("content-disposition", "attachment;filename="
+ urlencoder.encode(name, "utf-8"));
return super.execute(mapping, form, request, response);
}
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。