使用jsp下载excel文件

<%@ page contenttype="application/x-xls;charset=gbk"%> 
<%@ page import="java.io.file,java.io.fileinputstream"%> 
<%@ page import="javax.servlet.servletoutputstream"%> 
<% 
out.clear(); 
out = pagecontext.pushbody(); 
string filename = request.getparameter("filename"); 
response.setheader("content-disposition","inline;filename="+filename); 
file fileload = new file(request.getrealpath("")+"/shipment/template", filename); 
long filelength = fileload.length(); 
string length = string.valueof(filelength); 
response.setheader("content_length", length); 
fileinputstream input = null; 
servletoutputstream output = null; 
try { 
   input = new fileinputstream(fileload); 
   output = response.getoutputstream(); 
   byte[] block = new byte[1024]; 
   int len = 0; 
   while ((len = input.read(block)) != -1) { 
    output.write(block, 0, len); 
   } 
} catch (exception e) { 
   e.getmessage(); 
} finally { 
   try { 
    input.close(); 
    output.flush(); 
    output.close(); 
   } catch (exception ex) { 
    ex.getmessage(); 
   } 
} 
%> 
  
 
作者“erdp技术架构”