使用angularjs从promise服务器获取数据

使用angularjs从promise服务器获取数据,angularjs,Angularjs,我如何从db获取表,并承诺。我已经创建了一个带有promise的服务和http调用。我已经检查了控制台,没有调用url。我不确定这是创建服务返回http承诺的八种方法 <!doctype html> <html lang="en" ng-app="myApp"> <head> <meta charset="utf-8"> <base href="/"> <title>T

我如何从db获取表,并承诺。我已经创建了一个带有promise的服务和http调用。我已经检查了控制台,没有调用url。我不确定这是创建服务返回http承诺的八种方法

<!doctype html>
<html lang="en" ng-app="myApp">
    <head>
        <meta charset="utf-8">
        <base href="/">
        <title>The Single Page Blogger</title>
        <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular-resource.min.js"></script>
        <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
        <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
        <script data-require="ui-bootstrap@*" data-semver="0.12.1" src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.12.1.min.js"></script>
        <script src="<%=request.getContextPath()%>/js/module.js"></script>
        <link rel="stylesheet" href="<%=request.getContextPath()%>/style2.css" />
        <script>

            app.controller('tableController', function ($log, $scope, tableService)
            {
                $scope.customerTable = [];
                var promise = tableService.fetchTable();
                promise.then(function (data)
                {
                    console.log("Your name is: " + data);
                    $scope.customerTable = data;
                });
            });

            app.factory('tableService', function ($http)
            {
                return
                {
                    fetchTable: function()
                    {
                        return $http.get('<%=request.getContextPath()%>/GetTable.do');
                    }
                }
            });

        </script>
    </head>
    <body>
        <div class="container" id="main"><br/><br/>
            Search: <input type="text" ng-model="search" placeholder="Search">
            <div ng-controller="tableController">
                <table class="table table-striped table-hover table-bordered">
                    <tr>
                        <th style="font-size: 13.3px">Card number</th>
                        <th style="font-size: 13.3px">First name</th>
                        <th style="font-size: 13.3px">Opening balance</th>
                        <th style="font-size: 13.3px">Withdrawal</th>
                        <th style="font-size: 13.3px">Deposit</th>
                        <th style="font-size: 13.3px">Closing balance</th>
                        <th style="font-size: 13.3px">Tx date</th>
                        <th style="font-size: 13.3px">Usage type</th>
                    </tr>
                    <tr ng-repeat="data in filteredTodos| filter: search">
                        <td>{{data.CARD_NUMBER}}</td>
                        <td>{{data.FIRST_NAME}}</td>
                        <td>{{data.OPENING_BALANCE}}</td>
                        <td>{{data.WITHDRAWAL}}</td>
                        <td>{{data.DEPOSIT}}</td>
                        <td>{{data.CLOSING_BAL}}</td>
                        <td>{{data.TXDATE}}</td>
                        <td>{{data.USAGE_TYPE}}</td>
                    </tr>
                </table>
                <pagination 
                    ng-model="currentPage"
                    total-items="customerTable.length"
                    max-size="maxSize"  
                    boundary-links="true">
                </pagination>
                <br/><br/><br>
                <button class="form-control btn btn-success" type="submit" ng-click="fetchTable()">Load Table Data</button>
            </div>
        </div>
    </body>
</html>

单页博客
app.controller('tableController',函数($log,$scope,tableService)
{
$scope.customerTable=[];
var promise=tableService.fetchTable();
promise.then(函数(数据)
{
log(“您的名字是:“+data”);
$scope.customerTable=数据;
});
});
app.factory('tableService',函数($http)
{
返回
{
fetchTable:function()
{
返回$http.get('/GetTable.do');
}
}
});


搜索: 卡号 名字 期初余额 撤回 押金 期终余额 发送日期 使用类型 {{data.CARD_NUMBER} {{data.FIRST{u NAME} {{data.OPENING{u BALANCE}} {{data.drawing} {{data.DEPOSIT}} {{data.CLOSING{u BAL}} {{data.TXDATE} {{data.USAGE{u TYPE}


加载表数据

这应该可以做到。您在设置
$scope.customerTable
之前返回了数据。事实上,你为什么还要返回数据呢?你不能从那样的回调中返回任何东西。我也删除了该行。

您的服务做出了承诺,但没有实现,请尝试将$q服务添加到您的服务中,如下所示:

app.factory('tableService', function ($http, $q) {
    return {
        fetchTable: function() {
            // the $http API is based on the deferred/promise APIs exposed by the $q service
            // so it returns a promise for us by default
            return $http.get('<%=request.getContextPath()%>/GetTable.do')
                .then(function(response) {
                    if (typeof response.data === 'object') {
                        return response.data;
                    } else {
                        // invalid response
                        return $q.reject(response.data);
                    }
                }, function(response) {
                    // something went wrong
                    return $q.reject(response.data);
                });
        }
    };
});

app.controller('tableController', function ($log, $scope, tableService)
{
    $scope.customerTable = [];

    $scope.getData = function() {
        var promise = tableService.fetchTable();

        promise.then(function (data)
        {
            console.log("Your name is: " + data);

            $scope.customerTable = data;
        });
    }
});

<div ng-controller="tableController" ng-init="getData()">
app.factory('tableService',函数($http,$q){
返回{
fetchTable:function(){
//$http API基于$q服务公开的延迟/承诺API
//因此,默认情况下,它会为我们返回一个承诺
返回$http.get('/GetTable.do')
.然后(功能(响应){
if(type of response.data==='object'){
返回响应数据;
}否则{
//无效响应
返回$q.reject(response.data);
}
},功能(回应){
//出了点问题
返回$q.reject(response.data);
});
}
};
});
app.controller('tableController',函数($log,$scope,tableService)
{
$scope.customerTable=[];
$scope.getData=function(){
var promise=tableService.fetchTable();
promise.then(函数(数据)
{
log(“您的名字是:“+data”);
$scope.customerTable=数据;
});
}
});

http url未被调用。正如你所说,我更改了代码。我写的服务正确吗?@kittu在返回$http.get之前,你能放一个控制台日志吗?只是为了确保函数本身正确运行。尝试在then()之后添加一个.catch,并记录错误,看看它是否有任何含义。例如:
catch(function(error){console.log(“发生了一个错误:+error”);
?fetchTable函数运行了吗?尝试了吗?没有控制器吗?我如何在html中调用它?只需调用
fetchTable()
单击按钮?尝试此操作:
加载表数据
仍然不工作您的控制器保持不变,尽管我会将您的服务调用添加到方法中,并在div上调用ng init。您不需要像他一样返回$q服务。仅当您希望手动创建延迟承诺并挂接解析和但应该可以工作,尤其是使用init,这样他的代码就不会在创建控制器时执行
app.factory('tableService', function ($http, $q) {
    return {
        fetchTable: function() {
            // the $http API is based on the deferred/promise APIs exposed by the $q service
            // so it returns a promise for us by default
            return $http.get('<%=request.getContextPath()%>/GetTable.do')
                .then(function(response) {
                    if (typeof response.data === 'object') {
                        return response.data;
                    } else {
                        // invalid response
                        return $q.reject(response.data);
                    }
                }, function(response) {
                    // something went wrong
                    return $q.reject(response.data);
                });
        }
    };
});

app.controller('tableController', function ($log, $scope, tableService)
{
    $scope.customerTable = [];

    $scope.getData = function() {
        var promise = tableService.fetchTable();

        promise.then(function (data)
        {
            console.log("Your name is: " + data);

            $scope.customerTable = data;
        });
    }
});

<div ng-controller="tableController" ng-init="getData()">