Secure the ArcGIS Server

References for securing the ArcGIS server:

• http://blogs.esri.com/esri/arcgis/2010/06/23/five-things-to-consider-when-securing-arcgis-server/
• http://geochalkboard.wordpress.com/2010/12/13/using-a-proxy-page-with-the-arcgis-server-api-for-javascript/
• http://resources.esri.com/help/9.3/arcgisserver/apis/javascript/arcgis/help/jshelp/ags_proxy.htm#webprint

Small HTTP servers for Windows

Some mini size HTTP server software for Windows:

• QuickPHP
• Abyss
• nginx

For nginx, if you want to add an alias which point to another location which is not under the root directory, you can put the following in the nginx.conf:

location /web {

    alias   d:/Code/nginx_web;

}

        

This means for locations http://yourhost/web, it is pointing to d:\Code\nginx_web actually.

So what about ProxyPass in nginx? I will try on it tomorrow. Keep update soon.

Java encoding : UTF-8, Big5, x-MS950-HKSCS

Suppose you got a file in Big5 containing some HKSCS characters (e.g. 深水埗, 赤鱲角, etc). When your environment (Ref: Charset.defaultCharset( ) ) is either UTF-8 / Big5, you will never get the things work.

The proper encoding should be "x-MS950-HKSCS"

This situation happens when I'm try the same pieces of code in Java console / Eclipse console and JSP @ Tomcat. While JSP works fine, but sucks in console mode. Finally I found the JSP is actually using encoding "x-MS950-HKSCS".

To set environment charset in Eclipse:

Right click on the file that you are going to execute (e.g. Testing.java), then "Properties" → "Run/Debug Settings" → "Common" → "Encoding". Type "x-MS950-HKSCS" in the field.

What a pity!

YUI LayoutUnit collapse

One can use layout.getUnitByPosition('left').collapse() and layout.getUnitByPosition('left').expand() to the layout units (except 'center' layout unit) in YUI's Layout.

Once the layout unit is collapsed, the size is determined by the attribute 'collapseSize'.

Anyway, YUI is something historical now.

Change Windows Update Server URL

Modify the Windows Registry to change the WSUS URL:

\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\WUServer

Ref: http://technet.microsoft.com/en-us/library/cc708554(v=ws.10).aspx

Regexp match with GenericValidator

Just a reminder to use GenericValidator for a quick way to do regexp matching in Java.

boolean rslt = org.apache.commons.validator.GenericValidator.matchRegexp(str, "(?i)abc|def|ghi");

Using "define" function in Dojo

You may experienced an error message "define is not defined" when using Dojo I got this error when trying the dojo.i18n feature when I did a dojo.requireLocalization( ) call. In some occasions a pre-built version of Dojo just don't have the "define" function at all (sigh.. ridiculous!). To solve this problem, consider the following (Dojo 1.6):

<script>
dojo.ready(function() {
    var currentModule;
    define=function(d,b,c){function g(a){if(a.charAt(0)==="."){for(a=d.substring(0,d.lastIndexOf("/")+1)+a;b!==a;)var b=a,a=a.replace(/\/[^\/]*\/\.\.\//,"/");a=a.replace(/\/\.\//g,"/")}return a.replace(/\//g,".")}c||(b?(c=b,b=d):(c=d,b=typeof c=="function"?["require","exports","module"].slice(0,c.length):[]),d=currentModule?currentModule.replace(/\./g,"/"):"anon");var e=d.replace(/\//g,"."),h=dojo.provide(e);if(typeof c=="function"){for(var i=[],a,f=0;f<b.length;f++){a=g(b[f]);var j=a.indexOf("!");if(j> -1)a.substring(0,j)=="i18n"&&(a=a.match(/^i18n\!(.+)\.nls\.([^\.]+)$/),dojo.requireLocalization(a[1],a[2])),a=null;else switch(a){case "require":a=function(a){return dojo.require(g(a))};break;case "exports":a=h;break;case "module":var k=a={exports:h};break;case "dojox":a=dojo.getObject(a);break;case "dojo/lib/kernel":case "dojo/lib/backCompat":a=dojo;break;default:a=dojo.require(a)}i.push(a)}b=c.apply(null,i)}else b=c;b&&(dojo._loadedModules[e]=b,dojo.setObject(e,b));if(k)dojo._loadedModules[e]=k.exports; return b};define.vendor="dojotoolkit.org";define.version=dojo.version;define("dojo/lib/kernel",[],dojo);define("dojo/lib/backCompat",[],dojo);define("dojo",[],dojo);define("dijit",[],this.dijit||(this.dijit={}));

    dojo.require("dojo.i18n");
    dojo.registerModulePath("language", "/path_to/language");

    // OR you can try the following if you want a relative path

    // dojo.registerModulePath("language", "../../../../../../language");

    // Suppose you are using Main.js to define the language

    dojo.requireLocalization("language","Main");

});

</script>

Reference: http://dojo-toolkit.33424.n3.nabble.com/define-is-not-defined-in-dojo-build-tt3128408.html#a3241874

Solution for java.io.NotSerializableException error when Tomcat reloads

To solve the Tomcat restart error, add <Manager> setting in <Context> section:

<Manager className="org.apache.catalina.session.PersistentManager" 
         saveOnRestart="false">
    <Store className="org.apache.catalina.session.FileStore"/>
</Manager>


References:

• http://blog.csdn.net/forandever/article/details/4553447
• http://stackoverflow.com/questions/4232222/cannot-resolve-this-error-notserializableexception

JavaScript libraries list

Just wanna to find some list for JavaScript libraries collection, I only got one at this moment:

• JS Dev Tools -- A roundup of Javascript development tools and libraries

HIde Account at Windows Login Screen

The following steps can hide user account in Windows login screen:

1. Go to HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\, if key not exists, create them.
2. Add DWORD registry
3. Set name = User account name (e.g. demouser)
4. Set value = 0

Done.