“总－分”结构

To do sth requests:
   1. .......
   2. .......

Do one of the following:
   Ÿ On Windows: .....
   Ÿ On Linux: ....

This section provides background information on ..... and describes how to .......
The following topics are covered:
     1....
     2...

The only circumstances under which you should need to change SGA and PGA Aggregate sizes are the following:
   1...
   2...


描述命令行

Enter the following command at the operating system prompt to start SQL Command Line: 
   .........

At the SQL Command Line prompt, enter the following command: 
   select * from table1;

If the command is successful, the following message is displayed:
   .........


确保

Ensure that sth is started.

Be certain that .....


请参见

Set environment variables according to the instructions in "Setting E... V... on the Linux Platform"

See "......." for instructions.

See "......" for more information.

See"...." for a discussion of .....

See Also: ...

>sqlplus /nolog              Just startup SQL*PLUS but haven't connected to DB

>sqlplus / as sysdba      Use os authentication

>sqlplus user/pwd         Use db authentication

SQL>startup                  Startup Oracle service (should startup TNSListener at first)

SQL>shutdown

SQL>connect user/pwd                        Local connection

SQL>connect user/pwd@host:1521    Remote connection *1* *2* *3*

SQL>connect system/pwd                   The pwd is the SYSTEM password that you set upon installation of Oracle Database XE.

>lsnrctl status               View listener status

>lsnrctl start

>lsnrctl stop

>lsnrctl reload

>lsnrctl services

>emctl start dbconsole  

>emctl start agent       start up the EM Grid Control facility

>isqlplusctl start         start up the iSQL*Plus server

Note
*1* Logging in to the Oracle Database XE host computer with an ssh (or telnet ) session and then starting SQL Command Line (or other Oracle command-line utility) is considered a local connection, even though you start the ssh (or telnet ) application on a remote computer.

*2* The remote computer must have Oracle client software installed.

*3* Only Oracle Database XE Client supports the notion of a default database service. If you connect remotely from any Oracle client software other than Oracle Database XE Client, you must include the XE service name.

 

Environment Variables:
   GROOVY_HOME=(your groovy install path)
   path=%GROOVY_HOME%/bin
   classpath=%GROOVY_HOME%/embeddable/groovy-all-1.0-JSR-06.jar


Hello.groovy (very very simple)

cmd
>groovyc Hello.groovy
>java Hello
>hello groovy

POJO principle

 

1. The class can not be final

 

2. Must implement Serializable

 

3. Must contain a non-argument constructor

 

4. The getter and setter must be public

 

     摘要: Ajax Asynchronous JavaScript and XML. Ant Ant is a software too...  阅读全文      摘要: Editing Ctrl + Space Basic code completion (the name of any class, method or v...  阅读全文

==must be installed==

RegexPlugin
http://www.intellij.org/twiki/bin/view/Main/RegexPlugin

unitTest: better (and also bigger) than JunitGenerator

CVS bar: VCS bar is too old

SpellCheckPlugin
http://www.intellij.org/twiki/bin/view/Main/SpellCheck

DBHelper: more powerful than  SQL Query Plugin. Maybe the latter will be removed after I am familiar with DBHelper.
http://ca.geocities.com/davidhuo2003/dbhelper.html

Rearranger: use it in canonical class, such as bean  
http://www.intellij.org/twiki/bin/view/Main/RearrangerPlugin

simpleUML  
http://www.intellij.org/twiki/bin/view/Main/SimpleUML

Key promoter: Shows to user how easy he can make same action using only keyboard


==good for using==

IdeaMouseGestures: IdeaMouseGestures plugin provides easy way to assign Idea's menu items to mouse gestures.
http://www.smardec.com/products/idea.html

KonaWorks PowerPack: A new code action to easily insert an expression inside a string literal
http://www.konaworks.org/

DragNDrop: This plugin will allow a user to drag and drop files into the main pane of IntelliJ

Workspaces
http://www.intellij.org/twiki/bin/view/Main/WorkspacesPlugin

RemoteTail: The plugin allows the user to view the content of a file which could be on a different computer.

Jump to Usage: Simple plugin to make navigation to element usages easier than using Alt+F7.
http://sourceforge.net/projects/jumptousage

Library Finder: helps to find library files (.jar/.zip) for a "fully qualified" class/resource name.
http://code.google.com/p/libraryfinder/

IntelliLang: IntelliLang is a combination of three basic kinds of functionality that are meant to support the developer in dealing with certain tasks that relate to (custom) languages in IntelliJ IDEA.
http://www.jetbrains.net/confluence/display/CONTEST/IntelliLang

XPathView + XSLT-Support: required by IntelliLang
http://www.intellij.org/twiki/bin/view/Main/XPathViewPlugin

Tabifier: The tabifier plugin retabs Java code so that syntactic elements are aligned vertically. 
http://www.intellij.org/twiki/bin/view/Main/TabifierPlugin

Struts Assistant: it will conflict with Struts Plugin, so Struts Assistant is enough.
http://www.intellij.org/twiki/bin/view/Main/StrutsAssistant

IdeaSpring: Helpful to edit applicationContext.xml. But it is even a commercial one! So it has to be re-download every 15 days.

XFile: defaul Changes is good enough, so maybe it will be removed later.
http://www.echologic.com/plugins/xfiles.html

UpperLowerCapitalize: just use the capticalize, since there is default upper/lower in IDEA
http://www.intellij.org/twiki/bin/view/Main/UpperLowerCapitalize

IdeaJad: a popular decompiler
http://www.tagtraum.com/ideajad.html

SyncEdit: Remove the default shortcut "Tab" (for "Next SyncEditable Word"), since I need "Tab" work normally.

World of Java
http://www.worldofjava.org/

Scratch Pad: Additional editor tool window to hold pieces of code temporarily. No syntax colouring, intentions or error highlighting.
http://www.intellij.org/twiki/bin/view/Main/ScratchPadPlugin

HTML Preview: Provides preview for html files using Mozilla browser


==learning==

TabSwitch: Open files/tabs switcher

CVS Report for IntelliJ IDEA: CVS Report for IntelliJ IDEA is a free open source plugin for IntelliJ IDEA to generate statistical reports from your CVS repository.
http://vcsreport.sourceforge.net/

RssPlugin: RSS Plugin for viewing RSS feeds within IntelliJ.
http://www.intellij.org/twiki/bin/view/Main/RssPlugin

Hibernate Tools: better than hibero which is even a commercial one!

Smart Introduce: how to use it?
http://www.intellij.org/twiki/bin/view/Main/SmartIntroducePlugin

GroovyJ: hoping it can become more powerful
http://groovy.codehaus.org/IntelliJ+IDEA+Plugin


==not very useful, so can be ignore==

Code Outline: Have not found anything useful  (dosen't work in IDEA 6.0)

OpenContainingForder: Plugin for Viewing folders with Windows Explorer, but cannot open a folder. So "Alt+Shift+E" is better 

LineMover: default "Ctrl+Shift+Up/Down" is enough.

SQL Query Plugin: DBHelper is good enough

SQL script editor: DBHelper is good enough

JavaDoc Browser: the window can't be big enough, so acutal browser (such as fire fox) is better.

BTW: if you have any good recommendation, welcome to share with us. 

计算机领域中的任何问题都可以通过增加一个“层”来解决！
   （比如：JVM、MVC、Hibernate都是用这一思想取得了成功）

这是一个配置编程的时代！
   （如何framework都可以看作是一个巨大的函数，配置文件就是传入的参数列表）

努力不一定成功！但放弃一定失败！

真的猛士，敢于直面惨淡的人生，正视淋漓的鲜血! （Jayson）

你可以拒绝学习，但你的竞争对手不会！

很多事情需要耐心等待转机。等了，可能失望，但没有遗憾（好好）

Any fool can write code that a computer can understand. Good programmers write code that humans can understand.

男人要有像厕所一样的胸怀,容忍如同粪便的一切!（不得不承认，这是我见到的最大度的一个男人）

让我们摒弃浮躁，读优秀的书，用优秀的技术，做出优秀的高质量的软件,毫无畏惧地生活，直面所有障碍和困境，并充满信心地克服！（一个优秀人的blog里的签名）

经验这种东西，机器到现在还学不来。现在各种所谓”智能”仍然像个傻瓜，包括商业智能。

专业性越强企业的生存能力要远远超过多元化的企业，其实人也是这样。（from ttnn）

1. Tomcat config file, where you can change Tomcat's port number: <CATALINA_HOME>/conf/server.xml  

note1: whether auto-reload the web application, when .class file is changed
              1) during developing, set reloadable=true
              2) after deployment, set reloadable=false


2. Some libs

/server/lib	just for Tomcat
/shared/lib	for all web apps
/common/lib	both Tomcat and all web apps
/webapps/jcat/WEB-INF/lib	just present web app

 

3. Immobile Directory Structure (the names are also immobile, include uppercase/lowercase) 
   /jcat
   /jcat/WEB-INF
   /jcat/WEB-INF/web.xml
   /jcat/WEB-INF/classes
   /jcat/WEB-INF/lib

     

Note: WEB-INF/classes is loaded by tomcat before WEB-INF/lib , so classes has priority than lib

 
4. Scopes
      Application：在整个web应用程序内有效。对应于servelet中的ServletContext对象，Action中的获取：getServlet().getServletContext()
      Session：在一个用户与服务器建立连接的整个过程中有效。Action中的获取：httpServletRequest.getSession()
      Request：在一个请求周期内有效。就是从你点击页面上的一个按钮开始到服务器返回响应页面为止（包括响应页面）。
      Page：仅在一个jsp页面内有效。

*1*   Request in Struts: PageFrom (request.setAttribute by using Form)-->Action(request.getAttribute&setAttribute)-->PageTo (request.getAttribute by using EL) 

*2* : Parameter vs Attribute in request
   Parameter 是 URL 带过来的参数，只能是个 String ，如 www.verican.com/test?para1=1&para2=ttt
   在 Action 中的调用： request.getParameter("para1"); 
   在响应页面中的调用： ${param.para1} （ param 是 EL 的隐藏对象） 

   Attribute 一般是 Form 带过来的属性，可以是任何对象
    在 Action 中的调用：一般已经存在于 Form 对象中;
   在响应页面中的调用： ${attributeName.xxx}  （ EL 会自动调用 getXxx 方法，所以该 attribute 必须实现 getXxx 方法）

5. Web server跟踪客户状态的四种方法（HTTP是无状态的协议）
    1）建立含有跟踪数据的隐藏表格字段
    2）重写包含额外参数的URL
    3）使用持续的Cookie
    4）使用Servlet API中的Session机制

6. JavaBean的标准
   1) should be a public class
   2) should have a non-argument constructor
   3) fields should be privated, and using get & set to access them
   4) also can have some other functions as a common class