使用Eclipse和Ant自动化ActionScript项目

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"Automating ActionScript Projects with Eclipse and Ant by Sidney de Koning" 本书《使用Eclipse和Ant自动化ActionScript项目》由Sidney de Koning撰写，详细介绍了如何使用Eclipse集成开发环境（IDE）和Apache Ant构建工具来优化ActionScript项目的开发流程。ActionScript是一种广泛用于创建富互联网应用程序（RIA），尤其是Adobe Flash平台的编程语言。 Eclipse是流行的开源IDE，支持多种编程语言，包括ActionScript。书中的内容可能涵盖了以下知识点： 1. **Eclipse for ActionScript开发**：讲解如何设置和配置Eclipse环境以支持ActionScript项目，包括安装Flex Builder或Flash Builder插件，创建新项目，以及使用Eclipse的代码编辑、调试和版本控制功能。 2. **Ant工具介绍**：Ant是一个基于Java的构建工具，允许开发者通过XML脚本定义构建任务。书中会解释Ant的基本概念，如build.xml文件结构，目标（target）和任务（task）的定义，以及如何通过Ant管理ActionScript项目的编译和部署。 3. **ActionScript项目自动化**：涵盖如何使用Ant脚本来自动化常见的开发任务，如编译AS源代码，打包SWF文件，执行测试，以及发布到不同环境。这有助于提高开发效率并减少手动错误。 4. **构建工作流**：讨论如何设计和实现高效的构建工作流，包括依赖管理、清理任务、条件判断等，确保项目的可维护性和一致性。 5. **集成测试**：可能包含如何在Eclipse和Ant环境中集成和运行ActionScript单元测试，确保代码质量。 6. **部署策略**：介绍如何通过Ant将ActionScript应用程序部署到各种目标，如Web服务器、桌面或移动设备。 7. **最佳实践和技巧**：分享使用Eclipse和Ant进行ActionScript开发时的经验和建议，可能涉及性能优化、错误处理和日志记录等方面。 8. **版本控制系统集成**：可能包含与Git、SVN等版本控制系统集成的方法，以实现团队协作和代码版本管理。 9. **错误处理和调试**：讲解如何在Eclipse中有效地追踪和修复ActionScript项目中的问题，利用其强大的调试工具。 10. **持续集成**：可能涉及如何将Eclipse和Ant集成到持续集成系统，如Jenkins或Bamboo，以实现自动化的构建和测试流程。这本书对于想要提升ActionScript项目开发效率，尤其是希望实现自动化构建和测试流程的开发者来说，是一份宝贵的参考资料。它提供了实用的指南，帮助读者掌握使用Eclipse和Ant构建ActionScript应用的高级技巧。

Workspaces and Perspectives

When you open Eclipse after the splash screen, you are presented with a dialog window

asking you to specify a location for your workspace. Normally, you would choose your

user directory and then a folder called workspace (it defaults to the Documents directory

within the user’s home folder), but you can choose any location.

What are workspaces?

Workspaces are what make Eclipse so powerful. A workspace is a folder on your hard

drive that holds all your settings, color themes, code formatting, and other preferences.

It also keeps your projects organized. There are different ways you can organize; for

example, a workspace can hold all your projects for a specific client but also for a

specific language. As we noticed when downloading Eclipse, you could download dif-

ferent versions for specific languages (Java, C++, PHP, JavaScript, etc.). And since every

development plug-in has a different perspective, we could easily edit XML in the XML

perspective and then switch to the FDT perspective to edit our ActionScript class files—

all in one workspace. (See Figure 1-1.)

Figure 1-1. Opening different perspectives

Just think of perspectives as different glasses you use to see everything around you. One

allows you to see everything XML-related; another, everything JavaScript-related. But

you can take this concept one level further by leveraging the power of workspaces.

My workspaces are set up in such a way that I have one for normal ActionScript projects,

one for “AIR for Android” development, one for AIR development, and so on.

You can also set up workspaces in such a way that you have one workspace for your

work projects, one for your personal pet projects, and one for creating POC (proof of

concepts) or prototypes. Or you might even have one workspace per client. It all depends

on what you like and how organized you are.

2 | Chapter 1: Tools

Increase Eclipse’s Available Memory

The next thing we need to do to make Eclipse a lean and mean machine is to set the

available memory higher. These memory settings are in a file called eclipse.ini. On

Windows, just search for that file in the install directory where Eclipse resides. On a

Mac, it works a little differently. Right-click the Eclipse.app file and select Show Package

Contents. Now browse to the Contents/MacOS folder. Open up Eclipse.ini in your fa-

vorite text editor and look for the values -Xms and -Xmx.

The default values for Eclipse are -Xms40m and -Xmx384m. I’ve found they work best if

you set -Xms to 512m and -Xmx to 1024m. This should give you enough available memory

to work with. Just make sure when editing this file to keep each argument on a single

line; if you put more on one line, the JVM (Java Virtual Machine) will ignore them:

-vmargs

-Dosgi.requiredJavaVersion=1.5

-XstartOnFirstThread

-Dorg.eclipse.swt.internal.carbon.smallFonts

-XX:MaxPermSize=256m

-Xms512m

-Xmx1024m

-Xdock:icon=../Resources/Eclipse.icns

-XstartOnFirstThread

Shortcut Keys

Most people are used to working with the Flash IDE, so it makes sense to set the shortcut

key for compiling to Command-Enter (Ctrl-Enter on Windows). Open up the Eclipse

preference pane and in the search box, type key. This brings up a selection of possible

items you are searching for.

The option we are looking for is under General→Keys; here, you’ll find the key bindings

(Figure 1-3). Now search for Run Last Launched, and change the binding to Command-

Enter (Ctrl-Enter on Windows). You do this by simply pressing those keys in the bind-

ing field. And since we want this to always happen when we’re compiling/debugging,

we also need to set another option.

Go back to the main search field in the Eclipse preferences and type config. This should

bring up the Run/Debug→Launching options. At the bottom, you will find the “Always

launch the previously launched application” option that you need to select (Fig-

ure 1-4). Click Apply and OK to confirm, and we are all set (for now).

4 | Chapter 1: Tools

FDT

Next, we want to be able to actually edit and compile AS class files. We do this with a

plug-in for Eclipse called FDT. Personally, I think this is the best editor for doing

ActionScript work, but as I said, this is personal. There are tons of editors out there,

but for this book we will be using FDT.

One of the cool things about FDT is that if you create open source projects, you can

apply for a free FDT Max license.

For more information on the features that FDT offers, go to http://www

.fdt.powerflasher.com/developer-tools/fdt/features/.

For more information about FDT’s open source initiative and free FDT

Max license, go to http://www.fdt.powerflasher.com/developer-tools/fdt/

community/.

Installing updates and plug-ins in Eclipse is a little different from all the other software

downloads you are familiar with. Eclipse works with so-called update sites, which are

basically file repositories with an XML file defining the latest builds.

So, instead of going to a download site and downloading a package, we open the Help

panel and select the Install New Software option. (See Figure 1-5.)

Enter the URL to the update site from FDT: http://fdt.powerflasher.com/update.

After you click Add, you are presented with a couple of choices; at the time of this

writing, they are FDT 3.5 and FDT 4.4. Select the latest version and click Next to install

it into Eclipse. After Eclipse calculates which elements to download and install, you

will see the screen shown in Figure 1-6.

In the screens that follow, click Next, accept the EULA, and click Finish. Now it’s time

to get something to drink and stretch your legs a bit, because this part can take a while,

depending on your connection speed.

During the install procedure, you might get a dialog box saying, “You are installing

software that contains unsigned content.” This basically means that there are plug-ins

being installed that have not been signed with a certificate. In some cases, this could

be malicious software. However, since FDT tests its software before putting it on the

market, you can press the OK button.

After everything is installed, you are prompted to restart; you’ll need to do so to com-

plete the install process.

Congratulations! We have installed Eclipse and FDT. Now go the FDT website to get

your trial license and get started: http://www.fdt.powerflasher.com/getlicense.

Thankfully, Ant is also installed with Eclipse, so we don’t have to do anything addi-

tional for it. The Ant version at the time of this writing is 1.8.2.

6 | Chapter 1: Tools

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