我在这里使用带有struts的Angular,而且我是Angular的新手。
我有一个控制器( Controller.js ),我使用post方法调用动作类( CartAction )。
从controller.js中的帖子调用/StrutsAngular/ControllerAction.do操作时,我没有发现任何错误。
但是动作类没有执行,甚至没有执行system.out.println。 当我在成功功能中添加警报时,我能够获得输入页面。 当我给出了错误的路径时,我进入了错误功能。
我无法理解为什么不调用这个动作。
如果在这种情况下,我还有另一个澄清 - >如果调用该动作,我可以获得响应数据。
早些时候我使用过jQuery,我也提供了我使用的示例代码。 我们怎样才能以类似的方式使用AngularJS
请提供帮助,并在收到进一步信息时告诉我。
提前感谢您的答案。
Controller.js
function Controller($scope,$http) {
$http.post('/StrutsAngular/ControllerAction.do').
success(function(data, status, headers, config) {
// this callback will be called asynchronously
// when the response is available
alert("Success :: "+data);
}).
error(function(data, status, headers, config) {
// called asynchronously if an error occurs
// or server returns response with an error status.
alert("Error :: "+data);
});
}
行动类
public class CartAction extends org.apache.struts.action.Action {
/**
* This is the action called from the Struts framework.
*
* @param mapping The ActionMapping used to select this instance.
* @param form The optional ActionForm bean for this request.
* @param request The HTTP Request we are processing.
* @param response The HTTP Response we are processing.
* @throws java.lang.Exception
* @return
*/
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
System.out.println("Entering Shop Cart Action");
List<Object> objectList= new ArrayList<>();
CartDto cartDto = new ShopingCartDto();
cartDto.setSno(1);
cartDto.setTitle("Title One");
objectList.add(cartDto);
response.setHeader("cache-control","no-cache");
response.setContentType("text/json");
PrintWriter out = response.getWriter();
JSONArray jsonArray = JSONArray.fromObject(objectList);
out.println(jsonArray.toString());
return null;
}
}
Jquery的
function onSubmit(){
var url = "/StrutsAngular/ControllerAction.do";
var formID = document.getElementById('formId');
var forwardUrl = "/StrutsAngular/ControllerAction.do";
}
function doAjaxPost(formId,url,forwardUrl){
var data = $("#"+formId+" :input").serializeArray();
$.ajax({
type: "POST",
url: url,
data: data,
beforeSend: function(jqXHR, settings){
var value = "Please Wait until progressing!";
document.getElementById('progress').innerHTML=value;
},
success: function(json){
var message=json[0].message;
},
error: function(jqXHR, textStatus, errorThrown){
if(jqXHR.status==500){
document.getElementById('errorMessage').innerHTML=errorThrown;
}
},
complete: function(jqXHR, textStatus){
document.getElementById('progress').innerHTML="";
if(jqXHR.status==500){
var message = textStatus;
document.getElementById('errorMessage').innerHTML=message;
}
}
});
}
JSP
<%--
Document : Cart
Created on : 25 Mar, 2014, 5:14:42 PM
Author : Arun
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html ng-app>
<head>
<title>Cart</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<script src="js/lib/angularjs-1.0.2/angular.js"></script>
<script src="js/lib/controllers/controllers.js"></script>
<link href="js/lib/bootstrap/css/bootstrap.css" rel="stylesheet">
</head>
<body ng-controller='Controller'>
<div class="container">
<form name="shoppingForm" id="formId">
<table class="table table-striped table-hover">
<caption></caption>
<thead>
<tr>
<th>S No</th>
<th>Item</th>
</tr>
</thead>
<tr ng-repeat='item in items | orderBy:title | filter:search' >
<td ><input ng-model='item.sno' class="form-control" size="3" placeholder="Quantity" maxlength="3" required></td>
<td ><input ng-model='item.title' class="form-control" size="10" maxlength="10" placeholder="Item Name" required></td>
</tr>
</table>
<div><button class="btn btn-lg btn-success btn-block">Submit</button></div>
</form>
</div>
</body>
</html>
答案 0 :(得分:1)
好的,你有一些问题正在发生,而且大多数问题似乎都是对Angular如何运作的误解。从jQuery背景中有很多关于“思考角度”的帖子:
"Thinking in AngularJS" if I have a jQuery background?
到目前为止,根据您的代码为您提供一些细节:
首先,您需要创建一个分配了ng-app属性的app(angular.module)。例如:
var myApp = angular.module('myApp',[]); // this creates a new angular module named "myApp";
<html ng-app="myApp"> // this will bootstrap your myApp module at the html DOM element once the domIsReady event fires
其次,您需要在模块上使用Angular定义控制器,并传递一个函数。 Angular有experimental "Controller as" syntax但我建议在尝试之前以标准方式进行。
myApp.controller('myCtrl', function ($scope,$http) {
$http.post('/StrutsAngular/ControllerAction.do').
success(function(data, status, headers, config) {
// this callback will be called asynchronously
// when the response is available
alert("Success :: "+data);
}).
error(function(data, status, headers, config) {
// called asynchronously if an error occurs
// or server returns response with an error status.
alert("Error :: "+data);
});
});
<div ng-controller="myCtrl">
最后,传递给controller()的函数只会被调用一次,并且只能在它被某个地方使用之后调用。因此,在这个示例中,绑定到DIV会在加载DOM时产生单个$ http.post。它不会做任何其他事情。我假设这只是你测试它到达那里。对于“真实”代码,您将通过$ scope公开某些函数,并从您的视图中调用它们:
myApp.controller('myCtrl', function ($scope,$http) {
$scope.sendData = function() {
$http.post(.....your other code....);
}
});
<div ng-controller="myCtrl"><a ng-click="sendData()">send data</a></div>