📄 downloadservlet.java
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package oa.servlet;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import oa.bean.*;
import oa.main.*;
import java.lang.*;
import java.sql.*;
public class DownloadServlet extends HttpServlet {
static final private String CONTENT_TYPE = "text/html; charset=GB2312";
//Initialize global variables
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//PrintWriter out = response.getWriter();
InputStream in = null;
OutputStream out = response.getOutputStream();
iMsgServer2000 imsg=new iMsgServer2000();
MailBean mb=null;
try {
DealString ds=new DealString();
mb=new MailBean();
if( mb.getConn() == null ){
PrintWriter out_writer = response.getWriter();
response.setContentType("text/html; charset=GB2312");
out_writer.println("<html>");
out_writer.println(ds.toASCII("<title>数据库无响应，请后退并重试</title>"));
out_writer.println(ds.toASCII("数据库无法响应,请 <a href='javascript:window.history.back(-1);'>返回</a> 重试"));
out_writer.println("</html>");
out_writer.close();
return;
}
String yjfjid=ds.toString(request.getParameter("id"));
String type=ds.toString(request.getParameter("type"));
String filename= ds.toGBK(ds.toString(request.getParameter("filename")));
String filepath = "";
if(!yjfjid.equals(""))//email下载邮件附件************************************************************************(1)
{
Vector vec=new Vector();
MailElementBean meb;
vec=mb.receiveFujian(yjfjid,"yjfjid");
if (vec!=null)
{
meb=new MailElementBean();
meb=(MailElementBean)vec.get(0);
//get filename and pathname
filename =meb.getFJMC();
//String filename =new String(meb.getFJMC().getBytes("ISO8859_1"),"gb2312");
String temp = meb.getFJWZ(); //virtual path(path in the database)
//temp = oa.main.ParentBean.FilesPath+"email/";
String filenewname=meb.getFJXMC() ;//new filename
String day = filenewname.substring(6,8);
filepath=temp+day+"\\"+filenewname;
response.setContentType("application/x-download");
response.setContentType("application/x-download; charset=ISO2022CN");
response.setHeader("Content-disposition","attachment; filename="+mb.toUtf8String(filename));
in = new BufferedInputStream(new FileInputStream(filepath));
byte[] buf = new byte[2048];
int bytesRead;
while ( (bytesRead = in.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
}
}
}
else if(type.equals("1"))//temp_sure下载新闻中的附件**********************************************************-(2)
{
String temp = oa.main.ParentBean.FilesPath;
filepath=temp+filename;
String name = filename.substring(filename.lastIndexOf('/')+1,filename.length());
response.setContentType("application/x-download");
response.setContentType("application/x-download; charset=ISO2022CN");
response.setHeader("Content-disposition","attachment; filename="+mb.toUtf8String(name));
in = new BufferedInputStream(new FileInputStream(filepath));
byte[] buf = new byte[2048];
int bytesRead;
while ( (bytesRead = in.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
}
}
else if(type.equals("2"))//cabinet/departfiles下载部门文件柜****************************************************(3)
{
String txt_fileID=ds.toString(request.getParameter("txt_fileID"));
String txt_departID=ds.toString(request.getParameter("txt_departID"));
Vector vect = mb.getOnePage("select WJMC,WJLJ from ZZ_BMWJB where BMBH= '"+txt_departID+"' and WJBH="+txt_fileID,1,1);
String name = "";
if(vect.size()>1)
{
Hashtable hash = (Hashtable)vect.get(1);
filepath = (String)hash.get("WJLJ");
name = (String)hash.get("WJMC");
}
String temp = oa.main.ParentBean.FilesPath;
filepath = temp + "cabinet/departfiles/" + filepath;
response.setContentType("application/x-download");
response.setContentType("application/x-download; charset=ISO2022CN");
response.setHeader("Content-disposition","attachment; filename="+mb.toUtf8String(name));
in = new BufferedInputStream(new FileInputStream(filepath));
byte[] buf = new byte[2048];
int bytesRead;
while ( (bytesRead = in.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
}
// String go = "oa/sharedfiles/departFileDownload.jsp?err=0";
// response.sendRedirect(go);
}
else if(type.equals("3"))//cabinet/personfiles下载个人文件柜**********************************************************(4)
{
String txt_fileID=ds.toString(request.getParameter("txt_fileID"));
String txt_personno=ds.toString(request.getParameter("txt_personno"));
Vector vect = mb.getOnePage("select WJMC,WJLJ from ZZ_GRWJB where ZGBH= '"+txt_personno+"' and WJBH="+txt_fileID,1,1);
String name = "";
if(vect.size()>1)
{
Hashtable hash = (Hashtable)vect.get(1);
filepath = (String)hash.get("WJLJ");
name = (String)hash.get("WJMC");
}
String temp = oa.main.ParentBean.FilesPath;
filepath = temp + "cabinet/personfiles/" + filepath;
response.setContentType("application/x-download");
response.setContentType("application/x-download; charset=ISO2022CN");
response.setHeader("Content-disposition","attachment; filename="+mb.toUtf8String(name));
in = new BufferedInputStream(new FileInputStream(filepath));
byte[] buf = new byte[2048];
int bytesRead;
while ( (bytesRead = in.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
}
// String go = "oa/person/personFileDownload.jsp?err=0";
// response.sendRedirect(go);
}
}catch(Exception e){
System.out.println(e);
}finally {
if(mb != null)
mb.closeConn();
if (in != null)
in.close();
}
}
//Clean up resources
public void destroy() {
}
}
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