Google 웹 툴킷 ( Google Web Toolkit )

오늘날 웹 응용프로그램을 작성하는 일은 지루하고 오류가 많이 발생하는 과정입니다. 개발자는 브라우저 문제를 해결하는 데 개발 시간의 90%를 소비할 수도 있습니다. 또한 대형 자바스크립트 코드 베이스와 AJAX 구성요소를 만들고, 다시 사용하고, 관리하는 일은 어려울 뿐 아니라 문제가 생기기 쉽습니다. Google Web Toolkit(GWT)을 사용하면 개발자가 Java 프로그래밍 언어로, 복잡하지만 성능이 우수한 자바스크립트 프런트엔드 응용프로그램을 빨리 작성하고 관리할 수 있으므로 이런 부담이 줄어듭니다.

Developing and deploying an application on Google App Engine

What Is Google App Engine?

Google App Engine lets you run your web applications on Google's infrastructure. App Engine applications are easy to build, easy to maintain, and easy to scale as your traffic and data storage needs grow. With App Engine, there are no servers to maintain: You just upload your application, and it's ready to serve your users.

You can serve your app from your own domain name (such as http://www.example.com/) using Google Apps. Or, you can serve your app using a free name on the appspot.com domain. You can share your application with the world, or limit access to members of your organization.

Google App Engine supports apps written in several programming languages. With App Engine's Java runtime environment, you can build your app using standard Java technologies, including the JVM, Java servlets, and the Java programming language—or any other language using a JVM-based interpreter or compiler, such as JavaScript or Ruby. App Engine also features a dedicated Python runtime environment, which includes a fast Python interpreter and the Python standard library, and a Go runtime environment that runs natively compiled Go code. These runtime environments are built to ensure that your application runs quickly, securely, and without interference from other apps on the system.

With App Engine, you only pay for what you use. There are no set-up costs and no recurring fees. The resources your application uses, such as storage and bandwidth, are measured by the gigabyte, and billed at competitive rates. You control the maximum amounts of resources your app can consume, so it always stays within your budget.

App Engine costs nothing to get started. All applications can use up to 500 MB of storage and enough CPU and bandwidth to support an efficient app serving around 5 million page views a month, absolutely free. When you enable billing for your application, your free limits are raised, and you only pay for resources you use above the free levels.

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Posted by 홍반장

 phonegap에서 webview가 위아래로 움직이는걸 멈추고 싶을때.
화면이 위아래나 좌우로 흔들리는걸 막을때.

~delegate.m

[[webView.subviews objectAtIndex:0] setScrollEnabled:NO];  //to stop scrolling completely
[[webView.subviews objectAtIndex:0] setBounces:NO]; //to stop bouncing

------

document.onload = function(){
    document.ontouchmove = function(e){ e.preventDefault(); }
};

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

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- (void)webViewDidStartLoad:(UIWebView *)theWebView
{
        theWebView.dataDetectorTypes = UIDataDetectorTypeNone;
        return [ super webViewDidStartLoad:theWebView ];
}

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

Posted by 홍반장

안드로이드 - 실제 휴대폰 연결해서 테스트하기

1.드라이버 설치

 : 휴대폰 제조사엣 driver를 찾아서 설치한다.
   모토로라 같은 외국업체는 미주 사이트에 드라이브가 많다.

2.USB 디버깅 활성화

 : 단말기에서 메뉴 > 설정 > 응용프로그램 또는 애플리케이션 > 개발 > USB 디버깅 허용

3.이클립스에서 테스트

 : 이클립스 DDMS perspective에서 테스트 기기를 확인 할 수 있다.

4.실 행

 : Java perspective 에서 프로젝트명 선택하고

   Run as > Android Application > 테스트 단말기 선택 후 OK

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

Posted by 홍반장

 

Getting started with Android PhoneGap in Eclipse

http://wiki.phonegap.com/w/page/164947 ··· -eclipse

한글 번역 : http://goodidea.tistory.com/11

Prerequisite Software

PhoneGap requires you have the following software installed:

     1. Eclipse Integrated Design Environment (IDE), a program to write code and manage software development

     2. Java Development Kit (JDK), the Java compiler and support tools

     3. The Android Software Development Kit (SDK), base code and emulators for developing Android apps

     4. Android Development Toolkit (ADT), a plug-in for Eclipse that makes Android development seamless

     5. Apache Ant, a program that automates software build processes (similar to 'make')

     6. Ruby, a programming language

     7. Git Bash, an alternative command program for Windows environments (Windows only)

If you've previously done any development in the Android environment, you probably have 1-4 already installed.  If you have not, it is strongly recommended you visit http://developer.android.com/index.html to better understand Android development and create your own, "Hello, World" example prior to jumping into PhoneGap.  A great resource exists at: http://developer.android.com/sdk/installing.html for new developers.

Step 1: Installing the Prerequisite Software

1A. Eclipse

Install the Eclipse IDE for Java Developers from http://www.eclipse.org/downloads/. This a ZIP archive file, extract the folder “eclipse”. Most other flavors of Eclipse (like Aptana or platform specific builds) will also work, provided that you install all the necessary Eclipse plug-ins.

1B. Java JDK

If you do not already have the java JDK installed on you're system, install the Java SE Development Kit - JDK 6 from here:
http://java.sun.com/javase/downloads/index.jsp

If you're running Windows this is a standard installer file, just follow the on screen instructions for installation.

1C. Android SDK

Install the Android SDK Package from here

http://developer.android.com/sdk/index.html 

Extract the downloaded archive and place it somewhere you'll remember and add the tools sub directory your PATH. Additional information and instructions for adding the Android SDK to your PATH can be found at:
http://developer.android.com/sdk/installing.html

Be sure to do the following (Windows):

1. If you install into a folder containing a space (c:\Program Files), you must refer to it by its truncated name in the command program.  In this case "c:\progra~1".  The truncated name will be the first six characters + ~ + a sequential number starting with 1 for each instance of the same six characters.
2. Add android SDK to your Path
3. Add android sdk tools (\android-sdk-windows\tools) to your path. This is necessary for ruby to find the command "android create project" later on.

1D. ADT Plug-in for Eclipse

Install the ADT Plug-in for Eclipse as described here:

http://developer.android.com/sdk/eclipse-adt.html

To verify your installation of Eclipse, Android SDK, ADT, and Java, you can build a sample “Hello World” application using the instructions located here:

http://developer.android.com/guide/tut ··· rld.html.

1E. Apache ANT

Visit: http://ant.apache.org/index.html

• Windows -
• If you install into a folder containing a space (c:\Program Files), you must refer to it by its truncated name in the command program.  In this case "c:\progra~1".  The truncated name will be the first six characters + ~ + a sequential number starting with 1 for each instance of the same six characters.
  
• Download and unzip binaries
• add the unzipped folder path to your PATH
• OS X - it comes with XCode otherwise "sudo port install apache-ant".

1F. Ruby

Visit: http://rubyinstaller.org for an automatic installation (Windows only)

• Windows - download and install Ruby from the official site http://www.ruby-lang.org/en/downloads/ or use the RubyInstaller (recommended) here http://rubyinstaller.org/
• OS X - nothing to see here.

         Ruby bin 으로 이동해서  'gem install nokogiri' 를 해주면 끝

1G. Git Bash (Windows only) 

     Visit: http://code.google.com/p/msysgit/downloads/list

     Download and install the latest full installer for official Git

     Visit: http://git-scm.com/ for additional information about Git

     Note: During installation, you may select the "Use Git Bash only" option

Step 2: Confirm Environment Variables

Environment variables are data stored by your system; in this case we are interested in the file locations of the various developer tools. You should have these environment variables:

• ANDROID_HOME, location of the Android SDK (for example: D:/android-sdk-windows)
• ANT_HOME, location of Android Ant (for example: D:\apache-ant-1.8.1)
• JAVA_HOME, location of the JDK (for example: C:\Program Files\Java\jdk1.6.0_20)
• Path, folders where the operating system always looks when given a command (includes these, for example: C:\Ruby191\bin; D:\apache-ant-1.8.1\bin; C:\Program Files\Java\jdk1.6.0_20\bin; D:\android-sdk-windows\tools)

You can confirm the environment variables the following way:

Windows:

2A. Right-click on My Computer (or Computer)

2B. Select Properties -> Advanced tab -> Environment Variables button).

2C.  "Edit..." the Path to include the needed folders.  Use a semicolon (;) to separate folders.

Hint:  You can copy the path from the address bar in Windows Explorer.

If everything looks good in the environment variables, try opening a command prompt (Start > Run > cmd) and typing in "ant", "ruby", "java", or "android".  If you get the error message "x was not recognized as an internal or external command" you need to check your PATH value.  If the program continues to execute you can use ctrl-c to terminate it.

Step 3. Download the PhoneGap Source Code

First you will need to download the latest PhoneGap code.  It is hosted on github.com.  The easier way to get the code is to download it directly from the github website.

3A.  Visit:  http://github.com/phonegap/phonegap-android

Alternatively, you may use a dedicated 'git' client to download the code or you may use Eclipse.  This guide will not cover either of those methods.

3B.  Unzip the files into a folder.

Step 4. Build the Example PhoneGap App

Now we will use Ruby and a script called 'droidgap' that is provided with PhoneGap to package up our example app.  This will create two outputs; a file called 'PhoneGap.jar' and an Android Eclipse project, which we will then import into Eclipse.

4A.  Open a command window and change directory ('cd') to the 'phonegap-android' folder.  In Windows, use git bash as the command window.  In Mac OS, use Terminal.

4B.  Run the following command.  This will create a PhoneGap.jar file and create a basic Android Eclipse project in the output path that can then be opened in Eclipse.

NOTE: The droidgap script has been updated and now there are two methods to create the necessary files. The new script is significantly simpler to use than the old method. For those who prefer the old method, it is still available.

NEW METHOD:

4C. From the 'phonegap-android' folder, run 'ruby bin/droidgap create [path_of_application]'. For the example app, the command would be 'ruby bin/droidgap create example'. If the example folder does not exist inside 'phonegap-android', run 'ruby bin/droidgap gen' first.

The new create command in the droidgap script will generate the Eclipse project, ready to be imported. The results of the script can be found at '[path_of_application]_android'. Example: If [path_of_application] = '~/my_app', then droidgap create will place results at '~/my_app_android'. The for the example app, the results will be placed at '../phonegap-android/example_android'

Skip ahead to Step 5 for Eclipse import instructions.

Run 'droidgap help' to see other new commands including run, log, test and ship.

OLD METHOD:

Previous users of the droidgap script please note that droidgap must now be invoked with the 'classic' command to use this method.

You should get a message in your terminal saying completed!

Example (Windows environment):

$ ruby ./droidgap classic "C:/Progra~1/Androi~1/android-sdk-windows" pgtest com.example.android.pgtest example/ "c:/Progra~1/Androi~1/phonegap-android/output"

In the above Windows example, the following environment settings were used:

android_sdk_path = "c:\Program Files\Android SDK\android-sdk-windows"

name = pgtest

path = "c:\Program Files\Android SDK\phonegap-android\output" (This is the output location where the example files were placed)

Example (Mac environment):

> cd phonegap-android

> ruby ./droidgap classic android/android-sdk-mac_86/ test_app com.mayerdan.testapp example/ ~/projects/test_droid_phonegap

Note if you get errors like:

BUILD FAILED

~/projects/phonegap-android/framework/build.xml:49: taskdef class com.android.ant.SetupTask cannot be found

followed by more errors like:

0:in `stat': No such file or directory - ~/projects/phonegap-android/framework/phonegap.jar

To fix this, just run the command with the full path to the android SDK

"sdk.dir=/andriod/android-sdk-mac_86" => "sdk.dir=/projects/andriod/android-sdk-mac_86"

Then run `ruby ./droidgap classic /Users/danmayer/projects/android/android-sdk-mac_86 test_app com.mayerdan.testapp example/ ~/projects/test_droid_phonegap` again.

Some notes:

• Your output path should not be inside your Eclipse workspace. *See note in Step 5
• Make sure the path you set to generate the application doesn't exist
• For the www folder, phonegap-android comes with a folder called example that includes some sample html, css and js.
• I found I was getting errors for not having set android or ant in my path. Make sure you followed the earlier steps.
• When pointing to a directory, you need to have quotes around the path "C:/mobile/......"
• While in the command prompt, you should manually change all the backslashes ( \ ) to forward slashes ( / ).  This helps the droidgap script with its syntax.  E.g. The android_sdk_path argument must use forward slashes (/).
• If you install into a folder containing a space (c:\Program Files), you must refer to it by its truncated name in the command program.  In this case "c:\progra~1".  Otherwise, the script will look for "c:\Program" and fail.
• Note: The truncated name will be the first six characters + '~' + a sequential number starting with 1 for each instance of the same six characters.  For instance if you have two folders c:\PhoneGapA and c:\PhoneGapB, the former's truncated name will become, "c:\phoneg~1" and the latter's will become, "c:\phoneg~2".
• For Windows users:  The droidgap script is written to expect UNIX-style syntax, which is why you need to use 'git bash' to execute these commands.  'Bash' is a shell language and the 'git bash' application can handle the expected syntax.  Alternatively you may use another bash-style command application, such as 'cygwin', but if you know what that is, you know how to install and use it.
• Do not have "tools" as a folder in your path to the android sdk folder; C:\Users\Daniel\Dev\tools\android-sdk won't work.
• If at any point you need to check your PATH variables in git bash you can use the command "echo $PATH"

 

Step 5. Importing Your Example App into Eclipse

Now time to create your project. In Eclipse, go to File > New project > Android > Android Project

Now select create project from existing source and navigate to the new folder that was generated in the last step. Select a build target and press finish.

*NOTE: The folder you specified in the Ruby script will actually be the folder that your Eclipse will save to, and compile from and NOT your current Eclipse Workspace. Saving your folder to a location inside of a Workspace will not allow you to create the project because the .metadata folder. If you have pointed your folder to one of your Eclipse Workspaces, simply cut and paste the folder to a location that is outside of any Workspace.

 

Now, in Eclipse you should see your project

Rightclick phonegap.jar under the libs folder and go to Buildpath -> Add to build path.

Note: Now the folder structure should look like the one shown below.

Click on the project folder again and then the Run button in Eclipse, it is the button that looks like "Play". When you run this project, you should the dialog box to Run As.., choose Android Application.
You may get the unable to launch dialog, this can happen if you have the Android 1.5 or some other file highlighted when you try to run the project. Just select the project folder and click run.

If you have done everything correctly, there should be an Application that loads.  It should be noted that testing with an actual device is preferable to the Emulator for many reasons, namely the fact that it's easier to test the Accelerometer, Geolocation, Beep and Vibrate Functionality.  However, for testing on the actual browser browser events, and various issues with Webkit on Android the Emulator does just as well.

Notes

• Perhaps JAVA_HOME does not point to the JDK. Or maybe JAVA_HOME doesn't exist. To fix this you must right click on my computer, go to advanced system settings, click the advanced tab, press the environment variables button, Under system variables click new and add JAVA_HOME if it doesn't exist and make the path to the JDK that was installed earlier.
• ERROR:

          droidgap:48:in ``': No such file or directory
         android create project -t 7 -k be.progone.test -a PG1 -n PG1 -p E:/baud/work/Mobile/Pr_Eclipse/PG1/build (Errno::ENOENT)
          from droidgap:48:in `create_android'

          SOLUTION:

          Add the Android SDK tools path to the system. Follow steps above to get to system environment variables.

          Eg: C:\Program Files\Android SDK\tools

• ERROR:
  "BUILD FAILED
  C:\phonegap-android\framework\build.xml:49: taskdef class com.android.ant.SetupTask cannot be found"
  
  SOLUTION:
  Try going to the "framework" folder and check the path in the local.properties file. See if its correct and pointing to your android sdk directory.

          You MUST use a forward slash in the directory (Windows users) otherwise the paths will not match up.

          Eg: C:/Program Files (x86)/Android SDK

 

 

• ERROR:

 

      "Click on various buttons on the example app, doesn't do anything" or some things are working but I can't tell what is going on, or I want more information how do I view the Android logs?

 
     SOLUTION:
     To get more information about what is going one while phonegap is running, run the Android log viewer. `adb logcat` if adb isn't found you just need to do the full path to it something like `~/projects/andriod/android-sdk-mac_86/tools/adb logcat`. If you have both a device and a Android emulator running use -d and -e like so `adb -e logcat`. This should give you more info about what is going on. Here is a small example clipping form the android logs.

D/PhoneGapLog(  291): file:///android_asset/www/phonegap.js: Line 216 : TypeError: Result of expression 'accel' [undefined] is not an object. E/Web Console(  291): TypeError: Result of expression 'accel' [undefined] is not an object. at file:///android_asset/www/phonegap.js:216 D/dalvikvm(  117): GC_EXPLICIT freed 1727 objects / 91840 bytes in 110ms D/PhoneGap(  291): The provider network is disabled D/SntpClient(   61): request time failed: java.net.SocketException: Address family not supported by protocol

    From this we can see that the accel is not working. And some information about the location of the Error. This helps debug problems and also helps you to give more information when asking the PhoneGap community for help. 

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

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PhoneGap iPhone

PhoneGapLib is a static library that enables users to include PhoneGap in their iPhone application projects easily, and also create new PhoneGap based iPhone application projects through a Xcode project template.

https://github.com/phonegap

https://github.com/phonegap/phonegap-iphone

Pre-requisites

Make sure you have installed the latest iPhone SDK. Download at http://developer.apple.com/ios

Build and install the Installer Package

1. Launch "Terminal.app"
2. Navigate to the folder where Makefile is (this folder)
3. Type in "make" then press Enter

The installer should build "PhoneGapInstaller.pkg" into this folder, then:

1. Quit Xcode
2. Launch "PhoneGapInstaller.pkg" to install PhoneGapLib, the PhoneGap framework and the PhoneGap Xcode Templates.

Create a PhoneGap project (Xcode 3)

1. Launch Xcode, then under the File menu, select "New Project...".
2. Navigate to the "User Templates" section, select PhoneGap, then in the right pane, select "PhoneGap-based Application"
3. Select the "Choose..." button, name your project and choose the location where you want the new project to be.
4. Modify the contents of the "www" directory to add your HTML, CSS and Javascript.

Create a PhoneGap project (Xcode 4)

1. Launch Xcode, then under the File menu, select "New Project...".
2. Navigate to the "iOS" section, under "Applications" - then in the right pane, select "PhoneGap-based Application"
3. Select the "Next" button, name your project and company idenfifier, then select the "Next" button again.
4. Choose the location where you want the new project to be.
5. Run the project at least once to create the "www" folder in your project folder.
6. Drag and drop this "www" folder into your project in Xcode, and add it as a folder reference.
7. Modify the contents of the "www" directory to add your HTML, CSS and Javascript.

Alternately, you can watch this screencast.

Uninstalling PhoneGapLib, PhoneGap.framework and the Xcode Templates

1. Launch "Terminal.app"
2. Navigate to the folder where Makefile is (this folder)
3. Type in "make uninstall" then press Enter

NOTE: It will ask you to confirm whether you want to delete the installed PhoneGapLib directory (just in case you made changes there) as well as the PhoneGap framework. It will not ask for confirmation in deleting the installed Xcode templates.

Installer Notes

This installer will only install items under your home folder (signified by ~)

Items that will be installed:

1. Xcode global var in ~/Library/Preferences/com.apple.Xcode.plist (which will be listed under Xcode Preferences -> Source Trees)
2. PhoneGapLib Xcode static library project under ~/Documents/PhoneGapLib
3. Xcode project template in ~/Library/Application Support/Developer/Shared/Xcode/Project Templates/PhoneGap
4. Xcode 4 project template in ~/Library/Application Support/Developer/Shared/Xcode/Templates/Project Templates/Application
5. PhoneGap Xcode static framework under /Users/Shared/PhoneGap/Frameworks/PhoneGap.framework (may change in future updates)
6. Symlink to the framework in (5) under ~/Library/Frameworks

To uninstall:

1. Remove the PHONEGAPLIB value in Xcode Preferences -> Source Trees
2. Delete the ~/Documents/PhoneGapLib folder
3. Delete the ~/Library/Application Support/Developer/Shared/Xcode/Project Templates/PhoneGap folder
4. Delete the "~/Library/Application Support/Developer/Shared/Xcode/Templates/Project Templates/Application/PhoneGap-based Application.xctemplate" folder
5. Delete the /Users/Shared/PhoneGap/Frameworks/PhoneGap.framework folder
6. Delete the ~/Library/Frameworks/PhoneGap.framework symlink

PhoneGapLib Tests

There is a Xcode project that will test PhoneGapLib according to the mobile spec. There is some setup needed before the project can be run. You will also need git installed and in your path.

Set up the test project:

1. Launch "Terminal.app"
2. Type in "chmod 755 update_test.sh"
3. Type in "./update_test.sh"

This will get the mobile-spec submodule and install it under the PhoneGapLibTests folder. You can then build and run the PhoneGapLibTest project to see the results.

You should run step (3) again before running any tests, to get the updated mobile-spec.

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

Posted by 홍반장

Episode - 아이패드용 매거진 Pleiades Corp.
 [펌] 웹앱을 만드는 사람들의 모임

Native 가 아닌 HTML5/CSS3/jQuery 로 만든 저희 어플을 소개 합니다.

실력있는 디자이너분들과 다양한 시도를 하면서 이번호를 내게 되었습니다.

특집은 일본대지진에 관해서 다루었고,

그 이외에 일러스트아트, 미디어아트, 마린블루스. 등의 다양한 꼭지들로 컨텐츠가 구성되었습니다.

webview로 모든 컨텐츠를 보여주기에 제약사항도 많았고

아직 불안한 요소도 많지만 보시면서 냉정한 평가를 해주시면,

다음달에는 조금 더 나은 모습으로 만들 수 있을거라고 생각합니다.

http://itunes.apple.com/kr/app/id401413450?mt=8#

http://cafe.naver.com/webappdev.cafe?i ··· 3Bamp%3B

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소개동영상

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주소링크!!!

http://itunes.apple.com/kr/app/id401413450?mt=8

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

Posted by 홍반장

• Homescreen Widgets
• Current Apps - Task Switching UI
• 

크리에이티브 커먼즈 라이센스

이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이센스에 따라 이용하실 수 있습니다.

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http://docs.phonegap.com/phonegap_acce ··· erometer

http://docs.phonegap.com/index.html

Accelerometer

Captures device motion in the x, y, and z direction.

Methods

• accelerometer.getCurrentAcceleration
• accelerometer.watchAcceleration
• accelerometer.clearWatch

Arguments

• accelerometerSuccess
• accelerometerError
• accelerometerOptions

Objects (Read-Only)

• Acceleration

크리에이티브 커먼즈 라이센스

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What Is Google App Engine?

# 예제 따라해보았다.
완전 시행착오 많이 하고. Ant 를 Eclipse와 연동해서 build 는 하는데, 이클립스에 이미
Ant가 플러그인되어 있는데 새로 내려받은거와 연동을 해서 혼선이 있었다.
 SDK 다 내려받고, web.xml 만들고 경로 연동에서 잘 해주어야 한다.
Ant  빌드파일 생성 시 <property name="sdk.dir" location="../appengine-java-sdk-1.4.3" /> 라고 있는데, 
실제 appengine 경로에 연결을 잘 해야 한다. 소스만 보고 따라하면 안됨.
이클립스에서 실행이 안되서(나의 설정잘못이겟지만. 아무튼.), 도스창으로 들어가서
> ant runserver 를 실행하고 나서야 웹페이지에서 확인할 수 있었다.
ant 를 도스창에서 사용할면 환경변수에 ANT_HOME 과 Path에 %ANT_HOME%/bin 을 잊지마라.
Google App Engine lets you run your web applications on Google's infrastructure. App Engine applications are easy to build, easy to maintain, and easy to scale as your traffic and data storage needs grow. With App Engine, there are no servers to maintain: You just upload your application, and it's ready to serve your users.

You can serve your app from your own domain name (such as http://www.example.com/) using Google Apps. Or, you can serve your app using a free name on the appspot.com domain. You can share your application with the world, or limit access to members of your organization.

Google App Engine supports apps written in several programming languages. With App Engine's Java runtime environment, you can build your app using standard Java technologies, including the JVM, Java servlets, and the Java programming language—or any other language using a JVM-based interpreter or compiler, such as JavaScript or Ruby. App Engine also features a dedicated Python runtime environment, which includes a fast Python interpreter and the Python standard library. The Java and Python runtime environments are built to ensure that your application runs quickly, securely, and without interference from other apps on the system.

With App Engine, you only pay for what you use. There are no set-up costs and no recurring fees. The resources your application uses, such as storage and bandwidth, are measured by the gigabyte, and billed at competitive rates. You control the maximum amounts of resources your app can consume, so it always stays within your budget.

App Engine costs nothing to get started. All applications can use up to 500 MB of storage and enough CPU and bandwidth to support an efficient app serving around 5 million page views a month, absolutely free. When you enable billing for your application, your free limits are raised, and you only pay for resources you use above the free levels.

Getting Started

• What Is Google App Engine?
• Java
  • Introduction
  • Installing the Java SDK
  • Creating a Project
  • Using the Users Service
  • Using JSPs
  • Using the Datastore with JDO
  • Using Static Files
  • Uploading Your Application

크리에이티브 커먼즈 라이센스

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