我在IBM MobileFirst Platform Foundation应用程序中使用AngularJS。我有一个登录表单，当我单击登录按钮时，它会收集一些数据并将其传递给适配器调用函数。如果成功，它永远不会调用成功loginSuccess函数。我需要单击登录按钮两次，以便调用成功函数。
为什么我需要点击两次按钮？
app.js
var app = angular.module('myApp', ['ui.router']);
app.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise('/login');
$stateProvider.state('login', {
url: '/login',
templateUrl: 'view/login.html',
controller: 'loginController'
});
});
login.js
app.controller('loginController', function($scope) {
$scope.login = function(usrName, pass) {
var usrName = angular.element('#usrName').val();
var pass = angular.element('#pass').val();
console.log("Variable values: " + usrName + " : " + pass);
$scope.loginProcedure = {
adapter: 'SQL',
procedure: 'login',
parameters: [usrName, pass]
};
WL.Client.invokeProcedure($scope.loginProcedure, {
onSuccess: $scope.loginSuccess,
onFailure: $scope.loginFailure
});
$scope.loginSuccess = function(data) {
$scope.data = data;
$scope.resultSet = data.resultSet;
console.log('success: ' + JSON.stringify($scope.data + " : " + $scope.resultSet));
};
$scope.loginFailure = function() {
console.log('failed');
};
}
});
SQL-impl.js
/*
* Licensed Materials - Property of IBM
* 5725-I43 (C) Copyright IBM Corp. 2011, 2013. All Rights Reserved.
* US Government Users Restricted Rights - Use, duplication or
* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
*/
/************************************************************************
* Implementation code for procedure - 'procedure1'
*
*
* @return - invocationResult
*/
var loginStatement = WL.Server.createSQLStatement("select usrname,password from jay1 where usrname = ? and password=? ");
function login(usr, pass) {
return WL.Server.invokeSQLStatement({
preparedStatement: loginStatement,
parameters: [usr, pass]
});
}
/************************************************************************
* Implementation code for procedure - 'procedure2'
*
*
* @return - invocationResult
*/
function procedure2(param) {
return WL.Server.invokeSQLStoredProcedure({
procedure: "storedProcedure2",
parameters: [param]
});
}
的index.html
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8">
<title>AB</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0">
<!--
<link rel="shortcut icon" href="images/favicon.png">
<link rel="apple-touch-icon" href="images/apple-touch-icon.png">
-->
<link rel="stylesheet" href="css/main.css" />
<link rel="stylesheet" href="css/bootstrap.min.css" />
<link rel="stylesheet" href="css/bootstrap-responsive.min.css" />
<script>
window.$ = window.jQuery = WLJQ;
</script>
</head>
<body ng-app="myApp">
<!--application UI goes here-->
<div id="view" ui-view></div>
<script src="js/initOptions.js"></script>
<script src="js/main.js"></script>
<script src="js/messages.js"></script>
<script src="library/jquery.min.js"></script>
<script src="library/angular.1.4.9.js"></script>
<script src="library/angular-ui-router.min.js"></script>
<script src="library/bootstrap.min.js"></script>
<script src="controller/app.js"></script>
<script src="controller/login.js"></script>
</body>
</html>
的login.html
<div ng-controller="loginController" class="col-xs-12 col-sm-6 col-md-4 center-block" id="lgBlock">
<!-- Login Box Start -->
<div class="panel panel-primary">
<div class="panel-heading">Login</div>
<div class="panel-body">
<form class="form-group" name="lgForm">
<input type="text" class="form-control" id="usrName" required />
<input type="password" class="form-control" id="pass" required />
<input type="submit" class="btn btn-primary btn-block" id="submit" value="Login" ng-click="login()" />
</form>
</div>
</div>
<!-- Login Box End -->
<!-- error Modal start -->
<div class="modal" role="modal" id="errorPopup">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">Error</div>
<div class="modal-body"></div>
</div>
</div>
</div>
<!-- error Modal End -->
</div>
使用angularJS $scope解析JSON数据的正确方法是什么？
1）$scope.data = data; $scope.resultSet = data.resultSet;
2）$scope.data = data; $scope.resultSet = $scope.data.resultSet;
答案 0 :(得分：2)
您应该利用AngularJS双向绑定更新您的登录控制器，如下所示：
<强> login.js
app.controller('loginController', function($scope) {
$scope.login = function() {
// TODO: if block to validate user input i.e., username and password
$scope.loginProcedure = {
adapter: 'SQL',
procedure: 'login',
parameters: [$scope.username, $scope.password]
};
WL.Client.invokeProcedure($scope.loginProcedure, {
onSuccess: $scope.loginSuccess,
onFailure: $scope.loginFailure
});
console.log($scope.loginProcedure);
$scope.loginSuccess = function(data) {
$scope.data = data;
// resultSet is part of data so you don't need to refrences
// you can use $scope.data.resultSet to access resultSet
console.log('success: ' + JSON.stringify($scope.data + " : " + $scope.data.resultSet));
};
$scope.loginFailure = function() {
console.log('failed');
};
}
});
您还应该更新视图以声明username和password
<强>的login.html
<div ng-controller="loginController" class="col-xs-12 col-sm-6 col-md-4 center-block" id="lgBlock">
<!-- Login Box Start -->
<div class="panel panel-primary">
<div class="panel-heading">Login</div>
<div class="panel-body">
<form class="form-group" name="lgForm">
<input type="text" class="form-control" id="usrName" ng-model="username" required />
<input type="password" class="form-control" id="pass" ng-model="password" required />
<input type="submit" class="btn btn-primary btn-block" id="submit" value="Login" ng-click="login()" />
</form>
</div>
</div>
<!-- Login Box End -->
<!-- error Modal start -->
<div class="modal" role="modal" id="errorPopup">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">Error</div>
<div class="modal-body"></div>
</div>
</div>
</div>
<!-- error Modal End -->
</div>
将数据传递到$scope的方式完全取决于您和您的需求。我的建议是确定您需要的内容并仅将其绑定到$scope，例如，如果您只需要data.resultSet，那么您应该$scope.resultSet。另一方面，如果您需要完全访问data对象，则应将data绑定到$scope，然后您仍然可以从那里访问resultSet，即$scope.data.resultSet
<强>建议：
仅将您需要在视图中引用的内容绑定到$scope，例如，您不需要访问视图中的loginSuccess和loginFailure，并且您只使用这两个功能一次，所以我建议您按如下方式更新loginController：
app.controller('loginController', function($scope) {
$scope.login = function() {
// TODO: if block to validate user input i.e., username and password
$scope.loginProcedure = {
adapter: 'SQL',
procedure: 'login',
parameters: [$scope.username, $scope.password]
};
WL.Client.invokeProcedure($scope.loginProcedure, {
onSuccess: function(data) {
$scope.data = data;
// resultSet is part of data so you don't need to refrences
// you can use $scope.data.resultSet to access resultSet
console.log('success: ' + JSON.stringify($scope.data + " : " + $scope.data.resultSet));
},
onFailure: function() {
console.log('failed');
}
});
}
});