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Grails是個典型的遵照MVC模式開發的框架，至少包含了以下3個部分：控制器(Controllers)、領域(Domain)對象(模型)、視圖(Views)。既然環境配置好了，Hello項目的基本構架也通過grails create-app hello創建好了，下面進入第一個grails例子。

進入hello項目文件夾(>cd hello)，輸入 grails create-controller hello

1

E:\Groovy\projects\hello>grails create-controller hello
2

3

Welcome to Grails 1.0.4 - http://grails.org/
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Licensed under Apache Standard License 2.0
5

Grails home is set to: E:\Groovy\grails-1.0.4
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7

Base Directory: E:\Groovy\projects\hello
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Note: No plugin scripts found
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Running script E:\Groovy\grails-1.0.4\scripts\CreateController.groovy
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Environment set to development
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[copy] Copying 1 file to E:\Groovy\projects\hello\grails-app\controllers
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Created Controller for Hello
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[mkdir] Created dir: E:\Groovy\projects\hello\grails-app\views\hello
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[copy] Copying 1 file to E:\Groovy\projects\hello\test\integration
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Created ControllerTests for Hello

這樣，在grails-app/controller目錄下自動生成HelloController.groovy文件，同時grails-test下生成HelloControllerTest.groovy測試文件。
我們編輯HelloController控制器，在index{}中輸出Hello World.其中，index是系統默認的操作，相當于JSP中的index.jsp。

1 class HelloController {
2 def index = {render 'Hello world!' }
3 }

運行項目 grails run-app

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E:\Groovy\projects\hello>grails run-app
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3

Welcome to Grails 1.0.4 - http://grails.org/
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Licensed under Apache Standard License 2.0
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Grails home is set to: E:\Groovy\grails-1.0.4
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7

Base Directory: E:\Groovy\projects\hello
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Note: No plugin scripts found
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Running script E:\Groovy\grails-1.0.4\scripts\RunApp.groovy
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Environment set to development
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[groovyc] Compiling 7 source files to C:\Documents and Settings\Administrator\.grails\1.0.4\projects\hello\classes
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[native2ascii] Converting 11 files from E:\Groovy\projects\hello\grails-app\i18n to C:\Documents and Settings\Administrator\.grails\1.0.4\projects\hello\resources\grails-app\i18n
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[copy] Copying 1 file to C:\Documents and Settings\Administrator\.grails\1.0.4\projects\hello\classes
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[copy] Copying 1 file to C:\Documents and Settings\Administrator\.grails\1.0.4\projects\hello\resources
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[copy] Copying 1 file to C:\Documents and Settings\Administrator\.grails\1.0.4\projects\hello
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Running Grails application..
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2009-03-12 20:00:01.183::INFO: Logging to STDERR via org.mortbay.log.StdErrLog
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2009-03-12 20:00:01.402::INFO: jetty-6.1.12
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2009-03-12 20:00:02.652::INFO: No Transaction manager found - if your webapp requires one, please configure one.
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2009-03-12 20:00:02.308:/hello:INFO: Set web app root system property: 'hello-development-0.1' = [E:\Groovy\projects\hello\web-app]
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2009-03-12 20:00:02.308:/hello:INFO: Initializing log4j from [file:C:\Documents and Settings\Administrator/.grails/1.0.4/projects/hello/resources/log4j.properties]
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2009-03-12 20:00:02.340:/hello:INFO: Initializing Spring root WebApplicationContext
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[0] spring.GrailsWebApplicationContext Refreshing org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@396c7: display name [org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@396c7]; startup date [Thu Mar 12 20:00:05 CST 2009]; parent: org.springframework.web.context.support.XmlWebApplicationContext@1e7c609
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[0] spring.GrailsWebApplicationContext Bean factory for application context [org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@396c7]: org.springframework.beans.factory.support.DefaultListableBeanFactory@c4c05
25

2009-03-12 20:00:08.179:/hello:INFO: Initializing Spring FrameworkServlet 'grails'
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2009-03-12 20:00:09.445::INFO: Started SelectChannelConnector@0.0.0.0:8080
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Server running. Browse to http://localhost:8080/hello

打開瀏覽器，輸入http://localhost:8080/hello/hello/index 查看運行結果

地址欄中，第一個hello為項目名，第二hello為控制器名，index為操作名。

最基本的一個入門程序寫完了，除了手工編寫外，我們還可以使用NetBeans作為開發IDE，大大簡化開發流程。至少不用記那么多命令了哈！

posted on 2009-03-12 18:12 Rique 閱讀(1123) 評論(0) 編輯收藏所屬分類: Groovy涉獵

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相關文章: Grails入門之二：一切從Hello World開始 Grails入門之一：環境配置及簡單命令介紹

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