Mehmet Altiparmak's Blog

Java – HtmlEncode

altiparmakm — Sun, 19 Sep 2010 14:43:50 +0000

I think encoding user inputs is a must in web programming. It has been almost 2 months that i use java and today when i am reading a book related to java servlets, i saw the heading “Sending Special Characters”. The issue was sampled with a method written by the author or somebody but not a standard java library method. That surprized me and i googled how java guys handle the issue and found the link http://commons.apache.org/lang/api-release/org/apache/commons/lang/StringEscapeUtils.html . It is easy to encode user inputs using this library with the methods like escapeHtml, escapeCsv, escapeJava, escapeXml and unescape forms of these methods.

You can download the jar file from http://commons.apache.org/lang/download_lang.cgi

Short JSP, Servlet

altiparmakm — Sun, 12 Sep 2010 13:35:56 +0000

Write Values to the output	`<%= new java.util.date() %> or Java Expression`
Include Java Blocks(Scriptlets)	`<% int var1 = 34; out.println(var1); %>`
Generate HTML using out object	`<% out.println("Hello World "); %>`
Import Packages, Classes with Page Directive	`<%@ page import="java.util.*" %>`
Import other pages!
Add Decleration	<%! `Date theDate = new Date(); Date getDate() { System.out.println( "In getDate() method" ); return theDate; }` %>
Add Tag Library	`<%@ taglib prefix="blx" uri="/blx.tld" %>`
JSP Standard Actions	http://www.jsptutorial.net/jsp-standard-actions.aspx
Writing a Servlet	http://www.jsptutorial.net/writing-the-first-java-servlet.aspx
JSTL mandatory reading: http://heavyz.sourceforge.net/homepage/homepage_zh/comp/notes/jstl-core.html
Having Problem With JSTL? I mean tags like ,	First we include required tag libraries inside the page. <%@taglib uri=”http://java.sun.com/jsp/jstl/core” prefix=”c” %> For Other Java Server Pages Taglibrary URIs visit this very usefull link Still have problems? URI is underlined with red? Then visit the link above and follow the steps under “Installing JSTL”
	http://www.jsptutorial.net/outputing-with-c-out-action.aspx
	http://www.jsptutorial.net/working-with-variables-by-using-c-set-and-c-remove-actions.aspx
Loops, Reaching request values using requestScope, some usefull loop samples	http://www.jsptutorial.net/jstl-looping-iteration-actions.aspx
Reach URL Parameters with , Redirect Page	http://www.jsptutorial.net/jstl-working-with-url-related-actions.aspx
Number Formatting with localization	http://www.jsptutorial.net/formatting-number-with-jstl-fmtformatnumber.aspx

JSP Tutorial

altiparmakm — Tue, 07 Sep 2010 13:43:37 +0000

http://www.jsptut.com/

http://www.jsptutorial.net/

Usefull Websites, Links

altiparmakm — Tue, 07 Sep 2010 13:25:43 +0000

PDF to Word Conversion	http://www.freepdfconvert.com/convert_pdf_to_source.asp
PL-SQL vs T-SQL	http://www.seouc.com/Presentations/OraclevsMSSQLSyntaxExamples.pdf

Eclipse Shortcuts

altiparmakm — Sat, 04 Sep 2010 21:01:32 +0000

Editor Shortcuts
Delete Row	CTRL + D
Format Code	CTRL + Shift + F
Show Open Files List	CTRL + E
Open Decleration	F3
Open Call Hierarchy	Ctrl + Alt + H
Show in Breadcrumb	Alt + Shift + B
Quick Outline	Ctrl + O
Quick Type Hierarchy	Ctrl + T
Show in Breadcrumb	Alt + Shift + B
Move Current Line(s) Up	Alt + Up Arrow
Move Current Line(s) Down	Alt + Down Arrow
Copy Current Line(s) Down-Up	Ctrl + Alt + Down-Up Arrow
Delete Current Line	Ctrl + D
Incremental Find	Ctrl + J (Press this combination and start typing what you are searching. Press Ctrl + J to step to next match)
Last Edit Location	Ctrl + Q
To Upper Case	Ctrl + Shift + X
To Lower Case	Ctrl + Shift + Y
Other Shortcuts
Mazimize Any Area	Double Click
Show Key Assist	Ctrl + Shift + L
Quick Access	CTRL + 3
Close Document	Ctrl + W
Maximize Edit Window	Ctrl + M
Close Document	Ctrl + W
Activate Editor on the right	Ctrl + Page Up
Activate Editor on the left	Ctrl + Page Down

Java + Eclipse Video Tutorial Links

altiparmakm — Fri, 03 Sep 2010 06:03:39 +0000

http://sourceforge.net/projects/eclipsetutorial/files/ best

http://eclipsetutorial.sourceforge.net/
http://eclipsetutorial.sourceforge.net/totalbeginner.html
http://www.intelligentedu.com/blogs/post/best_new_training_sites/3707/top-40-java-video-tutorials-on-youtube
http://www.javavideotutes.com/

Running two apache tomcat server on windows

altiparmakm — Thu, 02 Sep 2010 11:20:42 +0000

Run Two Apache Tomcat Server on the Same Machine

Hello everybody,

I am new to java and today faced with a issue, i needed to deploy my application to a windows server
but there was also another application on the machine and the owner of that application did not want
my application to be hosted on the same tomcat server. I had to setup a new server but there were some configurations
needed to be done after installing(copying indeed) new apache server.

First the port numbers that tomcat server listen must be changed. Also the CATALINA_BASE parameter must be set inside the
startup.bat file.

Open the server.xml file under the \conf.
Change server port from 8005 to another port number that is not under use. I prefer 8006
scroll down and stop when you saw something protocol=”HTTP/1.1″. Change the port number near to again some port(not redirectPort) number that is not under use. I prefer 8888 this time
On the line “Connector port=”8009″ protocol=”AJP/1.3″ redirectPort=”8443″ /” change port. I prefere 8010
Port configuration is DONE!
Now open Tomcat installation or home directory(new tomcat server), go to bin directory and find startup.bat
Right click the file and select edit.
Add these lines above the all lines inside the file.
- set CATALINA_HOME=Your existing servers home directory — > optional
- set CATALINA_BASE=Your new Server’s directory which includes directories like conf, bin — > mandatory
- set JAVA_HOME=Java installation directory generally something like jdk1.x.x or jrex.x.x — > optional
Close the file after saving the changes and double click the file(startup.bat).
Your server must be running this time.

Also including the optional lines inside the startup.bat file is a solution to the errors like JAVa_HOME not found or CATALINA_HOME not found. On some installations these environment variables are not set and you get these errors. Including these lines inside the startup.bat file solve the problem.

It is over bye…

JS Bin

altiparmakm — Sun, 21 Feb 2010 21:29:56 +0000

http://jsbin.com/ javascript uygulamalarınızı deneyebileceğiniz ve başkasına linkini göndermek istediğinizde size yardımcı olacak bir uygulama. Popüler javascript kütüphanelerini ekleyebiliyorsunuz.

Login failed for user ‘IIS APPPOOL\DefaultAppPool’.

altiparmakm — Wed, 30 Dec 2009 15:33:54 +0000

Windows 7ye geçiş yaptıktan sonra karşılaştığım bir diğer problem ise yine localdeki IIS üzerinden LINQ kullandığım WEB uygulaması çalıştırırken aldığım Login failed for user ‘IIS APPPOOL\DefaultAppPool’ hatası idi.
Çözüm olarak yine google yaptım ve aşağıdaki makaleye ulaştım.

http://www.codetoday.net/default.aspx?g=posts&t=1595>

CSS Problem with IIS 7 ( CSS özellikleri yüklenmiyor IIS 7 )

altiparmakm — Wed, 30 Dec 2009 13:53:22 +0000

IIS 7 de CSS özellikleri yüklenmiyor. (CSS problem with IIS 7)

Herkese Merhaba,

Sonunda Windows 7′ye geçebildim ancak Windows 7′yle beraber bir takım problemler de beraberinde geldi.
Bunlardan bir tanesi de localhost üzerinde çalıştırmayı denediğim WEB uygulamarında CSS dosyalarının hiçbir etki de bulunmamasıydı. WEB Developer toolları yardımıyla pathler doğru geliyor mu diye defalarca kontrol ettim ancak doğru olmasına rağmen problem halen sürüyordu. Bir süre google yaptıktan sonra aşağıdaki makaleyi buldum. Gerçekten nokta atış yapmış yazan kişi problem anında çözüldü.

http://weblogs.asp.net/meligy/archive/2009/10/12/funny-problem-windows-7-iis-7-5-images-css-not-showing.aspx