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Grails
Grails关注将"规约编程"(coding by convention)引入Groovy。它是一个开放源网络应用构架， 对Groovy语言起到杠杆作用，并且对Java网络开发起到补足作用。你可以用Grails 作为独立开发环境, 它隐藏了所有的配置细节，也可以将它同和入你的Java商务逻辑。
Grails关注与使开发最简化，而且Grails的解决方案来自于广泛的开发者，不只局限于Java社区。
Grails构建在开源技术如Spring、Hibernate和SiteMesh之上，提供了一个类似于Rails 的平台可以与Java平台无缝集成. Groovy是一种“动态”或指令语言。动态语言一般用来加速和简化程序撰写。与Python或Ruby等其他指令语言不同的是，用Groovy撰写的程序，可与Java虚拟器结合。
目录 |
Install
wget http://download.huihoo.com/grails/grails-bin-1.0.1.zip GRAILS_HOME= C:\grails-1.0.1 or /usr/local/grails-1.0.1 Add the "%GRAILS_HOME%\bin" directory to your PATH environment variable Add the "%GRAILS_HOME%\ant\bin directory to your PATH environment variable. grails create-app input project name: my-project cd my-project grails create-domain-class input domain name: Book
my-project\grails-app\domain\Book.groovy
class Book {
String title
String author
}
my-project\grails-app\conf\BootStrap.groovy
class BootStrap {
def init = { servletContext ->
// Create some test data
new Book(author:"Stephen King",title:"The Shining").save()
new Book(author:"James Patterson",title:"Along Came a Spider").save()
}
def destroy = {
}
}
my-project\grails-app\controllers\BookController.groovy
class BookController {
def scaffold = Book
}
grails run-app
http://localhost:8080/my-project/
http://localhost:8080/my-project/book
运行成功 :)
To upgrade your existing Grails projects you must run:
grails clean grails upgrade
NetBeans
http://wiki.netbeans.org/groovy
CRUD
Create
def p = new Person(name:"Jack", age:32, lastVisit:new Date()) p.save()
Read
def p = Person.get(1) assert 1 == p.id
Update
def p = Person.get(1) p.name = "Peter" p.save()
Delete
def p = Person.get(1) p.delete()
GORM
One-to-one
class Face {
Nose nose
}
class Nose {
static belongsTo = [face:Face]
}
new Face(nose:new Nose()).save() // ok
def f = Face.get(1) f.delete() // both Face and Nose deleted
One-to-many
class Author {
static hasMany = [ books : Book ]
String name
}
class Book {
static belongsTo = [author:Author]
String title
}
Many-to-many
class Book {
static belongsTo = Author
static hasMany = [authors:Author]
String title
}
class Author {
static hasMany = [books:Book]
String name
}
GPath: Groovy's ability to manipulate collections via GPath and methods like sort, findAll and so on combined with GORM results in a powerful combination.
def books = Book.list()
def books = Book.list(offset:10, max:20)
def books = Book.list(sort:"title", order:"asc")
def book = Book.get(23)
def books = Book.getAll(23, 93, 81)
def book = Book.findByTitle("The Stand")
Usage
grails help
- grails bootstrap
- grails bug-report
- grails clean
- grails compile
- grails console
- grails create-app
- grails create-controller
- grails create-domain-class
- grails create-integration-test
- grails create-plugin
- grails create-script
- grails create-service
- grails create-tag-lib
- grails create-unit-test
- grails doc
- grails generate-all
- grails generate-controller
- grails generate-views
- grails help
- grails init
- grails install-plugin
- grails install-templates
- grails list-plugins
- grails package
- grails package-plugin
- grails package-plugins
- grails plugin-info
- grails release-plugin
- grails run-app
- grails run-app-https
- grails set-proxy
- grails set-version
- grails shell
- grails stats
- grails test-app
- grails upgrade
- grails war
Plugins
grails list-plugins
To find more info about plugin type 'grails plugin-info [NAME]'
To install type 'grails install-plugin [NAME] [VERSION]'
grails install-plugin yui 2.5.0
For further info visit http://grails.org/Plugins
GSP
<html>
<body>
<%-- This is my comment --%> // <%="Hello GSP!" %> JSP-style comment
<%="Hello GSP!" %>
</body>
</html>
Ext
grails install-plugin ext or grails install-plugin ext 2.0.2 Ext has installed under your project's /web-app/js/ext/2.0.2
More Detail: http://grails.org/Ext+Plugin
Using ExtJS Layouts with Grails Layouts
GWT
grails install-plugin gwt grails create-gwt-module <module> grails compile-gwt-modules grails create-gwt-page grails events grails run-gwt-client
More Detail: http://www.grails.org/GWT+Plugin
JSON
def list = {
def results = Book.list()
render(contentType:"text/json") {
books {
for(b in results) {
book(title:b.title)
}
}
}
}
Result
[
{title:"ActiveRecord Tutorial"},
{title:"Grails Tutorial"}
]
Tutorials
Build Your First Grails Project: A Grails-Powered Blog
NetBeans
Groovy and Grails 在开发版中已经可用 http://wiki.netbeans.org/groovy
开发版: http://deadlock.netbeans.org/hudson/job/trunk/lastSuccessfulBuild/artifact/nbbuild/dist/zip/
相关项目
Samples
http://svn.codehaus.org/grails/trunk/grails-samples/
相关链接
- http://grails.codehaus.org/
- http://www.g2one.com/
- http://www.groovygrails.com
- http://download.huihoo.com/grails/
- http://docs.huihoo.com/grails/
