{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 走好不送 的问题《java.lang.IllegalStateException: Already using out》','https://www.manongdao.com/q-156455.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
windchill GUI on client side browser when a user clicks on a button particular pdf file should gets downloaded on his system.I have achieved this by using the following code.
<body>
<%
String pdfname= session.getAttribute("pdfname").toString();
String Pdfpath= session.getAttribute("pdfpath").toString();
File f =new File(Pdfpath);
Boolean flag=false;
if(f.exists())
{
BufferedInputStream filein = null;
BufferedOutputStream out2=null;
try {
File file = new File(Pdfpath);//specify the file path
byte b[] = new byte[1048576];
int len = 0;
filein = new BufferedInputStream(new FileInputStream(file));
out2=new BufferedOutputStream(response.getOutputStream());
response.setHeader("Content-Length", ""+file.length());
response.setContentType("application/pdf");
response.setHeader("Content-Disposition","attachment;filename="+pdfname);
response.setHeader("Content-Transfer-Encoding", "binary");
while ((len = filein.read(b)) > 0) {
out2.write(b, 0, len);
out.println("Your Pdf Document Is Generated Please close it");
}
filein.close();
out2.flush();
out2.close();
}
catch(Exception e)
{
out.println(e);
}
}else{
String error ="File Not Found Or File Has Bean Deleted Already";
request.setAttribute("error", error);
RequestDispatcher s = request.getRequestDispatcher("NoFile.jsp");
s.forward(request, response);
}
%>
</body>
This code works fine and file is getting downloaded but after that It throws an exception.The following is my method server log
ERROR : org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/Windchill].[jsp] - Servlet.service() for servlet jsp threw exception
Thu 3/28/13 12:29:07: TP-Processor7: java.lang.IllegalStateException: Already using output stream
Thu 3/28/13 12:29:07: TP-Processor7: at wt.servlet.CompressionFilter$GzippingResponse.getWriter(CompressionFilter.java:860)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:173)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.runtime.JspWriterImpl.close(JspWriterImpl.java:187)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jsp.netmarkets.jsp.gt.get_jsp._jspService(get_jsp.java:105)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
Thu 3/28/13 12:29:07: TP-Processor7: at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
Thu 3/28/13 12:29:07: TP-Processor7: at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
Thu 3/28/13 12:29:07: TP-Processor7: at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
Thu 3/28/13 12:29:07: TP-Processor7: ......
......
There are lots of post available in google regarding this exception but I can't clear my mistake. I've also tried adding this in servlet instead of jsp. That too shows the same exception.Is this way correct for downloading a file or I'm in wrong way? I need help
Thanks
Seems like the exception is thrown from this line.
In case your code to send the PDF as Application fails during writing then it will thrown and exception and while trying to print the exception with the above line the outputputstream is already being used.
Do not intermix UI and Business Logic in JSP. Use a Servlet to do this job.
You cannot use both
getServletOutputStream()andgetWriter()in same response.Coming to your problem. Avoid writing scriptlets in JSP. Whatever you are doing in JSP , implement it in Servlet.
You are calling
response.getOutputStream();in JSP which is illegal. You should use eitherServletResponse.getOutputStream()orServletResponse.getWriter(). Since JSP's use ServletResponse.getWriter() by default. You should write to ServletResponse.getWriter() instead ServletResponse.getOutputStream()This is what Java Doc says :
You have
</body>after your scriptlet. It'll print something to the response outputstream, but you have already closed that one before.What sense does it make to include
<body>tags in your response when what you actually want to do is stream a PDF back to the client?