Controller Usage 控制器用法

A controller fulfills the C in the Model View Controller (MVC) pattern and is responsible for handling web requests. In Grails a controller is a class that ends in the convention "Controller" and lives in the grails-app/controllers directory. A controller can be created with the create-controller command: 控制器是模型/视图/控制器（MVC）模式中控制器（C）的实现，而且负责处理web请求。在Grails中一个控制器就是以“Controller”结尾并且在grails-app/controllers目录下的一个类，你可以通过create-controller命令来创建：

grails create-controller hello

Or via your favourite IDE or text editor. 或者是你喜欢的IDE/文本编辑器。

class HelloController {
	def world = {
		render "Hello World!"
	}
}

Each action in the controller is a callable block (for example the world action above) that has access to a number of implicit variables and methods which are covered in this reference documentation.

Refer to the user guide topic on Controllers for more information. 更多信息请参照用户指南中的控制器主题。