JSP download TXT and Excel two kinds of files

1Download TXT File This took me a lot of time the reason is that when I download txt file with IE, I open the file directly in the page. Although looked up some information, also looked at other people's solution, but can not solve the problem, and finally found that is a letter to blame: less write a letter hehe enough sloppy!!! The code is as follows: OutputStream o=Response.getoutputstream (); byteb[]=New byte[500]; File Fileload=NewFile ("E:/test.txt"); Response.setcontenttype ("Application/octet-stream"); Response.setheader ("Content-disposition", "attachment; Filename=text.txt "); LongFilelength=fileload.length (); String length1=string.valueof (filelength); Response.setheader ("Content_length", length1); FileInputStream in=NewFileInputStream (fileload); intN;  while((N=in.read (b))!=-1) {O.write (b,0, N);    } in.close ();    Out.clear (); out=pagecontext.pushbody ();2the only difference between downloading an Excel file and downloading a TXT file is that the ContentType value is set differently: OutputStream o=Response.getoutputstream (); byteb[]=New byte[500]; File Fileload=NewFile ("E:/text.xls");        Response.reset (); Response.setcontenttype ("Application/vnd.ms-excel"); Response.setheader ("Content-disposition", "attachment; Filename=text.xls "); LongFilelength=fileload.length (); String length1=string.valueof (filelength); Response.setheader ("Content_length", length1); FileInputStream in=NewFileInputStream (fileload); intN;  while((N=in.read (b))!=-1) {O.write (b,0, N);    } in.close ();    Out.clear (); out=Pagecontext.pushbody ();        These two would have been put together, because my page needs to determine whether to download the TXT file or xls file here to separate the need to note that the last two sentences must be added, otherwise it will appear getoutputstream () Error!!!! Example:<%@ page language= "Java"Import= "java.util.*" pageencoding= "UTF-8"%> <%String Path=Request.getcontextpath (); String BasePath= Request.getscheme () + "://" +request.getservername () + ":" +request.getserverport () +path+ "/"; %> <! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" > function Download (filename) {var URL= encodeURI ("down2.jsp?filename=" +filename); Window.location.href=URL; }     </script> General test:<a href= "javascript:void (0)" onclick= "Download (' a.txt ');" >down a.txt</a>Chinese file name test:<a href= "javascript:void (0)" onclick= "Download (' Chinese. txt ');" >down Chinese .txt</a>General Steering:<a href= "A.txt" >down.txt</a> </body> down2.jsp:<%@ page language= "Java"Import= "java.util.*,java.io.*" pageencoding= "UTF-8"%> <%request.setcharacterencoding ("Utf-8"); String filename= Request.getparameter ("filename"); FileName=NewString (Filename.getbytes ("iso-8859-1"), "UTF-8"); SYSTEM.OUT.PRINTLN (filename); OutputStream o=Response.getoutputstream ();byteb[]=New byte[500]; /*** Get the current path of the file *@paramargs*/String Serverpath=request.getrealpath ("\ \"); File Fileload=NewFile (serverpath+filename); Response.setcontenttype ("Application/octet-stream"); Response.setheader ("Content-disposition", "attachment; Filename= "+filename); LongFilelength=fileload.length (); String length1=string.valueof (filelength); Response.setheader ("Content_length", length1); FileInputStream in=NewFileInputStream (fileload);intN; while((N=in.read (b))!=-1) {O.write (b,0, N); } in.close (); Out.clear (); out=pagecontext.pushbody ();%>

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JSP download TXT and Excel two kinds of files