jsp jug: 2017

Tuesday, 21 March 2017

Simple file upload in jsp

<HTML>
<HEAD>
<TITLE>Display file upload form to the user</TITLE>
</HEAD>
<BODY>
<FORM ENCTYPE="multipart/form-data" ACTION="upload.jsp" METHOD=POST>
<br>
<br>
<br>
<center>
<table border="0" bgcolor=#ccFDDEE>
<tr>
<center>
<td colspan="2" align="center"><B>UPLOAD THE FILE</B>
<center>
</td>
</tr>
<tr>
<td colspan="2" align="center"></td>
</tr>
<tr>
<td><b>Choose the file To Upload:</b></td>
<td><INPUT NAME="file" TYPE="file"></td>
</tr>
<tr>
<td colspan="2" align="center"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit"
value="Send File"></td>
</tr>
<table>
</center>
</FORM>
</BODY>
</HTML>

<%@ page import="java.io.*"%>

String saveFile = "";

String contentType = request.getContentType();

if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {

DataInputStream in = new DataInputStream(request.getInputStream());

int formDataLength = request.getContentLength();

byte dataBytes[] = new byte[formDataLength];

int byteRead = 0;

int totalBytesRead = 0;

while (totalBytesRead < formDataLength) {

byteRead = in.read(dataBytes, totalBytesRead, formDataLength);

totalBytesRead += byteRead;

}

String file = new String(dataBytes);

saveFile = file.substring(file.indexOf("filename=\"") + 10);

saveFile = saveFile.substring(0, saveFile.indexOf("\n"));

saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1, saveFile.indexOf("\""));

int lastIndex = contentType.lastIndexOf("=");

String boundary = contentType.substring(lastIndex + 1, contentType.length());

int pos;

pos = file.indexOf("filename=\"");

pos = file.indexOf("\n", pos) + 1;

int boundaryLocation = file.indexOf(boundary, pos) - 4;

int startPos = ((file.substring(0, pos)).getBytes()).length;

int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;

saveFile = "/var/lib/tomcat/webapps/manual_pull/file_uploads/" + saveFile;

try{

File ff = new File(saveFile);

FileOutputStream fileOut = new FileOutputStream(ff);

fileOut.write(dataBytes, startPos, (endPos - startPos));

fileOut.flush();

fileOut.close();

}catch(Exception e){

out.println(e.getMessage());

}

%><Br>

<tr>

<td><b>You have successfully upload the file by the name of:</b>

out.println(saveFile);

}

</td>

</tr>

</table>

Thursday, 16 March 2017

File upload using JSP

<%@ include file="shared/config.jsp"%>
<%@ include file="view/header.jsp"%>
<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">

<%@ page import="org.apache.commons.fileupload.*, org.apache.commons.fileupload.servlet.ServletFileUpload, org.apache.commons.fileupload.disk.DiskFileItemFactory, org.apache.commons.io.FilenameUtils, java.util.*, java.io.File, java.lang.Exception" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>File Upload Example</title>
</head>

<body>
<h1>Data Received at the Server</h1>
<hr/>
<p>

<%
String exFilename="test.sql";

if (ServletFileUpload.isMultipartContent(request)){
ServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());
List fileItemsList = servletFileUpload.parseRequest(request);

String optionalFileName = "";
FileItem fileItem = null;

Iterator it = fileItemsList.iterator();
while (it.hasNext()){
FileItem fileItemTemp = (FileItem)it.next();
if (fileItemTemp.isFormField()){
%>

<b>Name-value Pair Info:</b><br/>
Field name: <%= fileItemTemp.getFieldName() %><br/>
Field value: <%= fileItemTemp.getString() %><br/><br/>

<%
if (fileItemTemp.getFieldName().equals("filename"))
optionalFileName = fileItemTemp.getString();
}
else
fileItem = fileItemTemp;
}

if (fileItem!=null){
String fileName = fileItem.getName();
%>

<b>Uploaded File Info:</b><br/>
Content type: <%= fileItem.getContentType() %><br/>
Field name: <%= fileItem.getFieldName() %><br/>
File name: <%= fileName %><br/>
File size: <%= fileItem.getSize() %><br/><br/>

<%
/* Save the uploaded file if its size is greater than 0. */
if (fileItem.getSize() > 0){
if (optionalFileName.trim().equals(""))
fileName = FilenameUtils.getName(fileName);
else
fileName = optionalFileName;

String dirName = "/var/lib/tomcat/webapps/manual_pull/file_uploads/";
exFilename=dirName+fileName;
File saveTo = new File(dirName + fileName);
try {
fileItem.write(saveTo);
%>

<b>The uploaded file has been saved successfully.</b>

<%
}
catch (Exception e){
out.println(e);
%>

<b>An error occurred when we tried to save the uploaded file.</b>

<%
}
}
}
}
%>
<%
boolean res;
String cmd="/usr/local/mysql/bin/mysql -u root -p test < "+exFilename;
out.println(cmd);
try{
res = lib.exec(cmd);
out.println(res);
//out.println("*********no****");
}catch(Exception e){
//out.println("*********yes****");
out.println(e.getMessage());
}

%>
</p>
</body>
</html>
<%@ include file="view/footer.jsp"%>