//一些主要的包和类
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.net.URLDecoder;
import java.net.URLEncoder;
/**
* 下载文件
* @return
* @throws UnsupportedEncodingException
*/
@Action(value="downloadAttachFile")
public String downloadAttachFile(){
//从前台传过来的附件名字:格式是,“2006#系统测试.docx格式"
String downloadName =wpyId+"#"+attachName;
//传入的数据
System.out.println(downloadName);
try {
OutputStream os = this.response.getOutputStream();
//OutputStream os = this.getResponse().getOutputStream();
if (Util.isIE(this.request)) //判断客户端是否为IE
{
//编码
downloadName = URLEncoder.encode(downloadName, "UTF-8");
}
else
{
downloadName = new String(downloadName.getBytes("UTF-8"),"iso-8859-1");
}
//设置让浏览器弹出下载对话框的Header
this.response.setContentType("application/x-download");
this.response.addHeader("Content-Disposition","attachment;filename=\"" + downloadName + "\"");
this.response.flushBuffer();
//将前台的数据经过包装后(加了头数据,并经过编码)需要解码
String downloadName1 =URLDecoder.decode(downloadName, "UTF-8");
System.out.println(downloadName1);
//解码的结果输出
String bgFile=realPath + File.separator + downloadName1;
FileInputStream fis = new FileInputStream(bgFile);
Util.copyStrem(fis, os);
fis.close();
os.close();
System.out.println("==========成功了!!===========");
} catch (IOException e) {
e.printStackTrace();//在命令行打印异常信息在程序中出错的位置及原因
System.out.println("==========出错了!!===========");
}
return NONE;
}