<p ng-app="myInject">
    <p ng-controller="myController">
        <span>{{TestInjector1}}</span>
    </p>
</p>
var myInject = angular.module("myInject",[]);
myInject.controller("myController", ["$scope", function($scope) {
    $scope.TestInjector1= "Hello  Injector";
}])

改成下面这样就可以了

HTML文件内容：

<p ng-app="MyInjectorModule">
    <p ng-controller="MyInjectorCtrl">
        <span>{{TestInjector1}}</span>
    </p>
</p>

JS文件内容：

var myInjectorModule = angular.module("MyInjectorModule",[]);
var myInjectorCtrl = function($scope){
    $scope.TestInjector1 = "Hello  Injector";
}
myInjectorModule.controller("MyInjectorCtrl",myInjectorCtrl);