JSP and JSTL Tutorials - Tutorial Addendum - Authoritative HTTP Acknowledgment Attack Curve
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(Continued from antecedent part...)
Here is the output:
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Sat, 19 Nov 2005 02:28:32 GMT
Content-Type: text/xml;charset=utf-8
X-Powered-
Content-Length: 38
Version: 2005
Key-Word: PHP
Key-Word: HTTP
<html><body>Hello world!</body></html>
Okay. What can we say about the output?
- I was able to alarm header() afterwards I started to achievement the article body, because I had the achievement absorber angry on.
I entered "output_buffering = 4096" in php.ini.
- "Content-Type" authentic ok.
- "Content-Length" authentic ok. But it was outputted afterwards "X-Powered-By". Not abiding why.
- The "replace" banderole worked. There is alone one "Version", because by absence alter is angry on.
There are two "Key-Word", because I set "replace" to "false" in my additional header() call.
Forcing the Browser to Redirect
The certificate says we can use header("Location: ...") to acquaint the browser to create a new HTTP appeal to
a accustomed URL. This is alleged "redirect". Actuality is my testing script, HttpRedirect.php:
<?php #HttpRedirect.php
# Absorb (c) 2005 by Dr. Yang, http://www.yang.com/
#
$text = "<html><body>Moved!</body></html>";
print($text);
header("Content-Type: text/xml;charset=utf-8");
header("Content-Length: ".strlen($text));
header("Location: http://www.yang.com/");
?>
The output:
HTTP/1.1 302 Item Moved
Server: Microsoft-IIS/5.1
Date: Sat, 19 Nov 2005 03:46:58 GMT
Content-Type: text/html
X-Powered-
Content-Length: 32
Location: http://www.yang.com/
<head><title>Document Moved</title></head>
<body><h1>Object Moved</h1>This certificate may be
begin <a HREF="http://www.yang.com/">here</a></body>
I am a little bit afraid by the output:
- My article physique has been absolutely replaced by a abbreviate HTML certificate generated
by the PHP engine. This is not mentioned in the PHP affidavit at all!
- The cachet band did change to "HTTP/1.1 302 Item Moved".
- The "Content-Length" still had my value, the amount of bytes of my aboriginal HTML message,
not the replacing message.
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l version="1.0"?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="1.2">
<!-- SetHeaderRevised.jsp
Absorb (c) 2002 by Dr. Yang
-->
<jsp:scriptlet><![CDATA[
response.setContentType("text/html;charset=UTF-8");
Cord argument = "<html><body>Hello world!</body></html>";
response.setContentLength(text.length());
response.setDateHeader("Last-Modified", System.currentTimeMillis());
response.setHeader("Author", " Yang");
out.print(text);
]]></jsp:scriptlet>
</jsp:root>
(Continued on next part...)
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