ggdio · October 1, 2013 10:49
diff --git a/UploadServlet.java b/UploadServlet.java
 // Import required java libraries
 import java.io.*;
 import java.util.*;
 
 import javax.servlet.ServletConfig;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.commons.fileupload.FileItem;
 import org.apache.commons.fileupload.FileUploadException;
 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
 import org.apache.commons.fileupload.servlet.ServletFileUpload;
 import org.apache.commons.io.output.*;

 public class UploadServlet extends HttpServlet {
   
   private boolean isMultipart;
   private String filePath;
   private int maxFileSize = 50 * 1024;
   private int maxMemSize = 4 * 1024;
   private File file ;

   public void init( ){
      // Get the file location where it would be stored.
      filePath = 
             getServletContext().getInitParameter("file-upload"); 
   }
   public void doPost(HttpServletRequest request, 
               HttpServletResponse response)
              throws ServletException, java.io.IOException {
      // Check that we have a file upload request
      isMultipart = ServletFileUpload.isMultipartContent(request);
      response.setContentType("text/html");
      java.io.PrintWriter out = response.getWriter( );
      if( !isMultipart ){
         out.println("<html>");
         out.println("<head>");
         out.println("<title>Servlet upload</title>");  
         out.println("</head>");
         out.println("<body>");
         out.println("<p>No file uploaded</p>"); 
         out.println("</body>");
         out.println("</html>");
         return;
      }
      DiskFileItemFactory factory = new DiskFileItemFactory();
      // maximum size that will be stored in memory
      factory.setSizeThreshold(maxMemSize);
      // Location to save data that is larger than maxMemSize.
      factory.setRepository(new File("c:\\temp"));

      // Create a new file upload handler
      ServletFileUpload upload = new ServletFileUpload(factory);
      // maximum file size to be uploaded.
      upload.setSizeMax( maxFileSize );

      try{ 
      // Parse the request to get file items.
      List fileItems = upload.parseRequest(request);
  
      // Process the uploaded file items
      Iterator i = fileItems.iterator();

      out.println("<html>");
      out.println("<head>");
      out.println("<title>Servlet upload</title>");  
      out.println("</head>");
      out.println("<body>");
      while ( i.hasNext () ) 
      {
         FileItem fi = (FileItem)i.next();
         if ( !fi.isFormField () )	
         {
            // Get the uploaded file parameters
            String fieldName = fi.getFieldName();
            String fileName = fi.getName();
            String contentType = fi.getContentType();
            boolean isInMemory = fi.isInMemory();
            long sizeInBytes = fi.getSize();
            // Write the file
            if( fileName.lastIndexOf("\\") >= 0 ){
               file = new File( filePath + 
               fileName.substring( fileName.lastIndexOf("\\"))) ;
            }else{
               file = new File( filePath + 
               fileName.substring(fileName.lastIndexOf("\\")+1)) ;
            }
            fi.write( file ) ;
            out.println("Uploaded Filename: " + fileName + "<br>");
         }
      }
      out.println("</body>");
      out.println("</html>");
   }catch(Exception ex) {
       System.out.println(ex);
   }
   }
   public void doGet(HttpServletRequest request, 
                       HttpServletResponse response)
        throws ServletException, java.io.IOException {
        
        throw new ServletException("GET method used with " +
                getClass( ).getName( )+": POST method required.");
   } 
 }
	// Import required java libraries
	import java.io.*;
	import java.util.*;

	import javax.servlet.ServletConfig;
	import javax.servlet.ServletException;
	import javax.servlet.http.HttpServlet;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.http.HttpServletResponse;

	import org.apache.commons.fileupload.FileItem;
	import org.apache.commons.fileupload.FileUploadException;
	import org.apache.commons.fileupload.disk.DiskFileItemFactory;
	import org.apache.commons.fileupload.servlet.ServletFileUpload;
	import org.apache.commons.io.output.*;

	public class UploadServlet extends HttpServlet {

	private boolean isMultipart;
	private String filePath;
	private int maxFileSize = 50 * 1024;
	private int maxMemSize = 4 * 1024;
	private File file ;

	public void init( ){
	// Get the file location where it would be stored.
	filePath =
	getServletContext().getInitParameter("file-upload");
	}
	public void doPost(HttpServletRequest request,
	HttpServletResponse response)
	throws ServletException, java.io.IOException {
	// Check that we have a file upload request
	isMultipart = ServletFileUpload.isMultipartContent(request);
	response.setContentType("text/html");
	java.io.PrintWriter out = response.getWriter( );
	if( !isMultipart ){
	out.println("<html>");
	out.println("<head>");
	out.println("<title>Servlet upload</title>");
	out.println("</head>");
	out.println("<body>");
	out.println("<p>No file uploaded</p>");
	out.println("</body>");
	out.println("</html>");
	return;
	}
	DiskFileItemFactory factory = new DiskFileItemFactory();
	// maximum size that will be stored in memory
	factory.setSizeThreshold(maxMemSize);
	// Location to save data that is larger than maxMemSize.
	factory.setRepository(new File("c:\\temp"));

	// Create a new file upload handler
	ServletFileUpload upload = new ServletFileUpload(factory);
	// maximum file size to be uploaded.
	upload.setSizeMax( maxFileSize );

	try{
	// Parse the request to get file items.
	List fileItems = upload.parseRequest(request);

	// Process the uploaded file items
	Iterator i = fileItems.iterator();

	out.println("<html>");
	out.println("<head>");
	out.println("<title>Servlet upload</title>");
	out.println("</head>");
	out.println("<body>");
	while ( i.hasNext () )
	{
	FileItem fi = (FileItem)i.next();
	if ( !fi.isFormField () )
	{
	// Get the uploaded file parameters
	String fieldName = fi.getFieldName();
	String fileName = fi.getName();
	String contentType = fi.getContentType();
	boolean isInMemory = fi.isInMemory();
	long sizeInBytes = fi.getSize();
	// Write the file
	if( fileName.lastIndexOf("\\") >= 0 ){
	file = new File( filePath +
	fileName.substring( fileName.lastIndexOf("\\"))) ;
	}else{
	file = new File( filePath +
	fileName.substring(fileName.lastIndexOf("\\")+1)) ;
	}
	fi.write( file ) ;
	out.println("Uploaded Filename: " + fileName + "<br>");
	}
	}
	out.println("</body>");
	out.println("</html>");
	}catch(Exception ex) {
	System.out.println(ex);
	}
	}
	public void doGet(HttpServletRequest request,
	HttpServletResponse response)
	throws ServletException, java.io.IOException {

	throw new ServletException("GET method used with " +
	getClass( ).getName( )+": POST method required.");
	}
	}