AngularJS中文社区controller 中的function 怎样调用到service

你可以查查angularjs 搜依赖注入
我贴个例子
//define a module
var mainApp = angular.module("mainApp", []);
...
//create a service which defines a method square to return square of a number.
mainApp.service('CalcService', function(MathService){
this.square = function(a) {
return MathService.multiply(a,a);
}
});
//inject the service "CalcService" into the controller
mainApp.controller('CalcController', function($scope, CalcService, defaultInput) {
$scope.number = defaultInput;
$scope.result = CalcService.square($scope.number);

$scope.square = function() {
$scope.result = CalcService.square($scope.number);
}
});
就是这样调用service的