Test 2 - POST Method

JSP Tutorials - Herong's Tutorial Examples - Version 4.03, by Dr. Herong Yang

JSP Tutorials - Herong's Tutorial Examples

∟Test 2 - POST Method - Successful

This section provides a tutorial example of testing file upload with the HTTP POST method and multipart/form-data encryption type. The test worked. All input values, including uploaded files, are dumped back on the browser.

The previous test of using the HTTP GET method was not very interesting. In the next test, I changed settings on the UploadInit.html page: Submit method = Post and Encryption type = multipart/form-data.

File Upload Test Settings:

File upload handler: [UploadDump.jspx]
Submit method: [post]
Encryption type: [multipart/form-data              ]
Submit

Then I selected the same files on the UploadForm.jsp page, and I got the following dump:

-----------------------------7d53495100260
Content-Disposition: form-data; name="email"

herong_yang@yahoo.com
-----------------------------7d53495100260
Content-Disposition: form-data; name="comment"

 I am uploading two files:
   hello.txt
   dot.gif
-----------------------------7d53495100260
Content-Disposition: form-data; name="file1"; filename="C:\hello.txt"
Content-Type: text/plain

Hello world!
-----------------------------7d53495100260
Content-Disposition: form-data; name="file2"; filename="C:\dot.gif"
Content-Type: image/gif

GIF89a   333    !?   ,        D  ;
-----------------------------7d53495100260
Content-Disposition: form-data; name="submit"

Submit
-----------------------------7d53495100260--

The output looks very interesting now:

IE seems to follow the specifications of RFC 1867 correctly.
The "comment" field shows that line breaks in the value of the "textarea" field were preserved correctly.
The "file1" and "file2" fields show that the Content-Type header lines were set correctly with text/plain and image/gif.

Last update: 2012.

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JSP (JavaServer Pages) Overview

Tomcat 7 Installation on Windows Systems

JSP Scripting Elements

Java Servlet Introduction

JSP Implicit Objects

Syntax of JSP Pages and JSP Documents

JSP Application Session

Managing Cookies in JSP Pages

JavaBean Objects and "useBean" Action Elements