Javascript 如何从angularjs中的服务回调函数中检索数据？请找到我的程序错误

您忘记返回数据：

var app = angular.module("myApp",[]);

app.controller("searchController",['$scope','searchByNameService', function($scope, searchByNameService) {

    $scope.searchName = "raj";
    $scope.doSearchByName = function () {
        alert("inside controller " + $scope.searchName);

        searchByNameService.searchByName($scope.searchName, function(r) {
            alert("inside service " + r);

            $scope.custno = r.custno;
            $scope.name = r.name;
            $scope.city = r.city;
            $scope.mobile = r.mobile;
            alert("name " + r.name + " " + " city " + r.city + " mobile " + r.city);

        });
    };//service

}])

app.service('searchByNameService',['$http','$log', function($http, $log){

    //$log.log("service instantiation ..");

    this.searchByName = function(custName, cb){
        $http({
            url: 'http://localhost:4545/customers/' + custName,
            method: 'GET'
        }).then(function(resp){
            cb(resp.data) // it does not return data , but it display on console
            $log.log(resp.data);
        }, function(res){
            $log.error('Service :: ERROR OCCURED,OR SERVER PROBLEM....');
            debugger;
        });
    };

}]);//service

this.searchByName=函数（custName，cb）{
$http({
网址：'http://localhost:4545/customers/"姓名,，
方法：“获取”
}).然后（功能（resp）{
cb（resp.data）//它不返回数据，但显示在控制台上
$log.log（各自的数据）；
return resp；//首先，控制台中有任何错误吗？“请查找我的程序错误”不是此网站的工作方式。请阅读。您应该返回您的数据。在控制台上无错误显示输出，如：Array（1）0:{custno:101，name:“raj”，city:“pune”，mobile:95270778，famillymember:“4”，}proto\uuuu:Objectlength:1\uuuu proto\uuuuu:Array（0）如果它登录到您的控制台，那么您可能无法很好地处理返回值。
this.searchByName = function(custName, cb){
        $http({
            url: 'http://localhost:4545/customers/' + custName,
            method: 'GET'
        }).then(function(resp){
            cb(resp.data) // it does not return data , but it display on console
            $log.log(resp.data);
            return resp; // <---------------------------------   Return the data
        }, function(res){
            $log.error('Service :: ERROR OCCURED,OR SERVER PROBLEM....');
            debugger;
        });
    };