JAVA JSP file upload example source code
In this video I have shown how you can create a JSP file upload. This project is shown in Eclipse IDE.
1. Project Structure
2. The jar file used in the project are,
1.org.apache.commons.io.jar
2.commons-fileupload-1.3.1.jar
3. The servlet will upload the image to d:\uploaded_files folder
FileUploadHandler.java
package com.chilyfacts.com;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
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.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class FileUploadHandler extends HttpServlet {
private static final long serialVersionUID = 1 ;
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
String file_name = null;
response.setContentType("text/html");
PrintWriter out = response.getWriter();
boolean isMultipartContent = ServletFileUpload.isMultipartContent(request);
if (!isMultipartContent) {
return;
}
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
List < FileItem > fields = upload.parseRequest(request);
Iterator < FileItem > it = fields.iterator();
if (!it.hasNext()) {
return;
}
while (it.hasNext()) {
FileItem fileItem = it.next();
boolean isFormField = fileItem.isFormField();
if (isFormField) {
if (file_name == null) {
if (fileItem.getFieldName().equals("file_name")) {
file_name = fileItem.getString();
}
}
} else {
if (fileItem.getSize() > 0) {
fileItem.write(new File("D:\\uploaded_files\\" + fileItem.getName()));
}
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
out.println("<script type='text/javascript'>");
out.println("window.location.href='index.jsp?filename="+file_name+"'");
out.println("</script>");
out.close();
}
}
}
4.web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>JSP_File_Upload</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>FileUploadHandler</servlet-name>
<servlet-class>com.chilyfacts.com.FileUploadHandler</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>FileUploadHandler</servlet-name>
<url-pattern>/FileUploadHandler/*</url-pattern>
</servlet-mapping>
</web-app>
5. index.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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>
<center>
<h1>Upload File Form</h1>
<form action="FileUploadHandler" enctype="multipart/form-data" method="post">
Enter File Name <input type="text" name="file_name"><br>
Select<input type="file" name="file2" /><br>
<input type="submit" value="upload" />
</form>
<%
String file_name=(String)request.getParameter("filename");
if(file_name!=null){
out.println(file_name+" File uploaded successfuly");
}
%>
</center>
</body>
</html>
6. After running the index.jsp in server
http://localhost:8080/JSP_File_Upload/index.jsp
7. Download complete project hereJSP_File_Upload.rar
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