Skip to main content

FIle Uploading in Java,How to upload file in JSP and Servlet



using this concept of java we can upload external content or file into Java Web Application.
Java provides a File input element of HTML form to upload external files in the Java Web project.
The external file can be an image file, text file, audio file, or video file.
1) create a form for file uploading and the form should be 
 <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());
        }
    }
File upload on database:-
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.oreilly.servlet.MultipartRequest;
/**
 * Servlet implementation class UploadSer
 */
@WebServlet("/UploadSer")
public class UploadSer extends HttpServlet {
private static final long serialVersionUID = 1L;
          /**
     * @see HttpServlet#HttpServlet()
     */
    public UploadSer() {
        super();
        // TODO Auto-generated constructor stub
    }
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PrintWriter out = response.getWriter(); 
       try
{
        response.setContentType("text/html");
    MultipartRequest m=new MultipartRequest(request,getServletContext().getRealPath("/")+"upload");
    out.print(m.getFilesystemName("file")+"<br>");
    out.print(m.getContentType("file")+"<br>");
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/projectcrm","root","");
Statement st = con.createStatement();
int x = st.executeUpdate("insert into imgupload(path) values('"+m.getFilesystemName("file")+"')");
if(x!=0)
{
response.sendRedirect("fileupload.jsp");
//out.print("File uploaded Successfully");
}
con.close();
}
catch(Exception ex)
{
out.print(ex.getMessage().toString());
}
}
}
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ page import="java.sql.*" %>    
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="UploadSer" method="post" enctype="multipart/form-data">
<input type="file" name="file"  />
<br>
<input type="submit" name="btnsubmit" value="Upload" />
</form> 
<%
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/projectcrm","root","");
Statement st = con.createStatement();
ResultSet x = st.executeQuery("select * from imgupload");
while(x.next())
{ %>
<img src="<%= "upload/"+x.getString(2) %>" width="100px" height="100px" />
<% }%>
</body>
</html>
Labels:

Comments

Post a Comment

POST Answer of Questions and ASK to Doubt

Popular posts from this blog

Uncontrolled form input in React-JS

  Uncontrolled form input in React-JS? If we want to take input from users without any separate event handling then we can uncontrolled the data binding technique. The uncontrolled input is similar to the traditional HTML form inputs. The DOM itself handles the form data. Here, the HTML elements maintain their own state that will be updated when the input value changes. To write an uncontrolled component, you need to use a ref to get form values from the DOM. In other words, there is no need to write an event handler for every state update. You can use a ref to access the input field value of the form from the DOM. Example of Uncontrolled Form Input:- import React from "react" ; export class Info extends React . Component {     constructor ( props )     {         super ( props );         this . fun = this . fun . bind ( this ); //event method binding         this . input = React . createRef ();...
Post a Comment
Read more

JDBC using JSP and Servlet

JDBC means Java Database Connectivity ,It is intermediates from Application to database. JDBC has different type of divers and provides to communicate from database server. JDBC contain four different type of approach to communicate with Database Type 1:- JDBC-ODBC Driver Type2:- JDBC Vendor specific Type3 :- JDBC Network Specific Type4:- JDBC Client-Server based Driver  or JAVA thin driver:- Mostly we prefer Type 4 type of Driver to communicate with database server. Step for JDBC:- 1  Create Database using MYSQL ,ORACLE ,MS-SQL or any other database 2   Create Table using database server 3   Create Form according to database table 4  Submit Form and get form data into servlet 5  write JDBC Code:-     5.1)   import package    import java.sql.*     5.2)  Add JDBC Driver according to database ide tools     5.3)  call driver in program         ...
4 comments
Read more

JSP Page design using Internal CSS

  JSP is used to design the user interface of an application, CSS is used to provide set of properties. Jsp provide proper page template to create user interface of dynamic web application. We can write CSS using three different ways 1)  inline CSS:-   we will write CSS tag under HTML elements <div style="width:200px; height:100px; background-color:green;"></div> 2)  Internal CSS:-  we will write CSS under <style> block. <style type="text/css"> #abc { width:200px;  height:100px;  background-color:green; } </style> <div id="abc"></div> 3) External CSS:-  we will write CSS to create a separate file and link it into HTML Web pages. create a separate file and named it style.css #abc { width:200px;  height:100px;  background-color:green; } go into Jsp page and link style.css <link href="style.css"  type="text/css" rel="stylesheet"   /> <div id="abc"> </div> Exam...
Post a Comment
Read more