how to show upload status in a form using jquery?
Hi
Good evening to all.
I want to upload some files using jsp and i have done that. If the size is very large then it should display some status and for that i have done like this
http://jsfiddle.net/utDRh/
But the status is not showing. Can anybody help me please.
this is the jsp codes.
<%
response.setContentType("text/html");
response.setHeader("Cache-control","no-cache");
String err = "";
String lastFileName = "";
String contentType = request.getContentType();
String boundary = "";
final int BOUNDARY_WORD_SIZE = "boundary=".length();
if(contentType == null || !contentType.startsWith("multipart/form-data")) {
err = "Ilegal ENCTYPE : must be multipart/form-data\n";
err += "ENCTYPE set = " + contentType;
}else{
boundary = contentType.substring(contentType.indexOf("boundar y=") + BOUNDARY_WORD_SIZE);
boundary = "--" + boundary;
try {
javax.servlet.ServletInputStream sis = request.getInputStream();
byte[] b = new byte[1024];
int x=0;
int state=0;
String name=null,fileName=null,contentType2=null;
java.io.FileOutputStream buffer = null;
while((x=sis.readLine(b,0,1024))>-1) {
String s = new String(b,0,x);
if(s.startsWith(boundary)) {
state = 0;
//out.println("name="+name+"<br>");
//out.println(fileName+"<br>");
name = null;
contentType2 = null;
fileName = null;
}else if(s.startsWith("Content-Disposition") && state==0) {
state = 1;
if(s.indexOf("filename=") == -1)
name = s.substring(s.indexOf("name=") + "name=".length(),s.length()-2);
else {
name = s.substring(s.indexOf("name=") + "name=".length(),s.lastIndexOf(";"));
fileName = s.substring(s.indexOf("filename=") + "filename=".length(),s.length()-2);
if(fileName.equals("\"\"")) {
fileName = null;
}else {
String userAgent = request.getHeader("User-Agent");
String userSeparator="/"; // default
if (userAgent.indexOf("Windows")!=-1)
userSeparator="\\";
if (userAgent.indexOf("Linux")!=-1)
userSeparator="/";
fileName = fileName.substring(fileName.lastIndexOf(userSeparator)+1,fileName.length()-1);
if(fileName.startsWith( "\""))
fileName = fileName.substring( 1);
}
}
name = name.substring(1,name.length()-1);
if (name.equals("file")) {
if (buffer!=null)
buffer.close();
lastFileName = fileName;
buffer = new java.io.FileOutputStream("../webapps/y/"+fileName);
}
}else if(s.startsWith("Content-Type") && state==1) {
state = 2;
contentType2 = s.substring(s.indexOf(":")+2,s.length()-2);
}else if(s.equals("\r\n") && state != 3) {
state = 3;
}else {
try
{
if (name.equals("file"))
buffer.write(b,0,x);} catch(Exception e){out.println(e);}
}
}
sis.close();
buffer.close();
}catch(java.io.IOException e) {
err = e.toString();
}
}
boolean ok = err.equals("");
if(!ok) {
out.println(err);
}else{
//response.sendRedirect(".jsp");
%>
<SCRIPT language="javascript">
history.back(1)
alert('Uploaded <%=lastFileName%>');
window.location.reload(false)
</SCRIPT>
<%
}
out.println("done");
%>