Tutorial about Uploading Files from WAP Cell Phones
Today cell phones are becoming more and more powerful. Many of them can be used as a digital camera for taking pictures and recording video clips. With a cell phone that supports file upload, you can upload some pictures or video clips to a server, thus saving storage space of your cell phone. In this tutorial, we will provide you information about building a mobile Internet application that accepts file uploads from WAP-enabled cell phones.
We will begin the tutorial with an overview of how to upload files from a WAP cell phone. Then we will provide you an XHTML MP file upload example that works on both mobile browsers and web browsers like IE and Firefox.
At the server-side, a server-side technology is required to handle the HTTP request submitted from the client. ASP / ASP.NET, Java Servlet, JSP, Perl and PHP are some examples of commonly used server-side technologies. In this tutorial, we will cover how to use PHP and Java Servlet / JSP to handle file uploads. The techniques can be applied to both WAP and web applications.
At the end of the tutorial, we will discuss some of the security issues that you should pay attention to.
Table of Contents
Upload File from WAP Cell Phone
Overview
How to Upload Files from WAP Cell Phones
Nokia Cell Phones that Support WAP Upload
XHTML MP Example Demonstrating File Upload
Handling Form-based File Upload with PHP
Parsing Form Data and Getting Information about the Uploaded File with PHP
PHP Directives Related to (Large) File Upload
Checking for Errors
UPLOAD_ERR_INI_SIZE Error Code
UPLOAD_ERR_FORM_SIZE Error Code (Use with the MAX_FILE_SIZE Form Field)
UPLOAD_ERR_PARTIAL Error Code
UPLOAD_ERR_NO_FILE Error Code
UPLOAD_ERR_NO_TMP_DIR Error Code
UPLOAD_ERR_CANT_WRITE Error Code
Saving Uploaded Files on the File System with PHP (move_uploaded_file() Function)
Processing Contents of Uploaded Files with PHP
Retrieving Values of Ordinary Form Fields with PHP
Example PHP File Upload Script
Handling Form-based File Upload with Java Servlet or JSP
Downloading the Apache Jakarta Commons FileUpload and Commons IO Libraries
Installing Apache Jakarta Commons FileUpload and Commons IO into a Servlet/JSP Container Like Tomcat
Checking If an HTTP Request is Encoded in Multipart Format
Parsing Form Data with Java Servlet / JSP
Iterating through File Items
Retrieving Values of Ordinary Form Fields with Java Servlet / JSP
Getting Information about the Uploaded File with Java Servlet / JSP
Saving Uploaded Files in the File System with Java Servlet / JSP
Processing Contents of Uploaded Files with Java Servlet / JSP
Example JSP File Upload Script
Security Considerations of File Upload
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