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File Uploading in Java, How to upload file in JSP and Servlet:-

Java provides a File input element to upload external files in Java Web project.

The external file can be an image file, text file, audio file, or video file.


1)To create First we Create Web Form using <form  enctype="multipart/form-data">


2)Create File Element using <input type="file"   name="any"  />


3)Now we will create Servlet and Write File Uploading code which is similar to File Handling Programming.

4) Add the Jar file to upload,cos.jar


Follow these links:-

https://github.com/shivaconceptsolution/FileUpload


Code of JSP For designing



<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <form action="UploadSer" name="frm1" method="post" enctype="multipart/form-data">
         
            <input type="file" name="file" />
            <br>
            <input type="submit" name="btnsubmit" value="Upload" />
         
         
        </form>
    </body>
</html>



2) Code For Servlet to upload data:-


import com.oreilly.servlet.MultipartRequest;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class UploadSer extends HttpServlet {

  hrows ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
           MultipartRequest m=new MultipartRequest(request,"E://upload");
           out.print("successfully uploaded");
        }
    }
}



How to upload multiple files in JSP and Servlet

File Uploading For Multiple File:-


JSP Code:-

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <form action="UploadSer" name="frm1" method="post" enctype="multipart/form-data">
           
            Enter name
            <br>
            <input type="text" name="txtname"  />
            <br>
            <br>
            Upload Text File
            <br>
            <input type="file" name="file" />
            <br>
            Upload Image File
            <br>
             <input type="file" name="file1" />
             <br>
            <input type="submit" name="btnsubmit" value="Upload" />
           
           
        </form>
    </body>
</html>

Servlet Code:-
 protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try  {
           MultipartRequest m=new MultipartRequest(request,"E://upload"); 
          /* Enumeration files = m.getFileNames();
           while (files.hasMoreElements())
                 {
                    
                      String name = (String)files.nextElement();
                      String filename = m.getFilesystemName(name);
                      String type = m.getContentType(name);
                      out.println("<BR>name: " + filename);
                      out.println("<BR>filename: " + filename);
                      out.println("<BR>type: " + type);
                   }*/
          out.print(m.getFilesystemName("file")+"<br>");
          out.print(m.getFilesystemName("file1")+"<br>");
          out.print(m.getParameter("txtname")+"<br>");
          // out.print("successfully uploaded");  
        }
        catch(Exception ex)
        {
            out.print(ex.getMessage());
        }
    }








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