在學習angularJS過程中關於使用$http請求與後臺互動的問題
Html程式碼（注意引入了angularJS）：
<!DOCTYPE>
<html>
<head>
<title>$http請求測試</title>
<meta charset="UTF-8">
<script src="../javascript/angular.js" type="text/javascript"></script>
<script src="../javascript/index.js" type="text/javascript"></script>
</head>
<body ng-app="myApp">
<div ng-controller="MyController">
<button ng-click="communicate()">請點選我來與後臺進行互動</button>
</div>
</body>
</html>
JavaScript程式碼：
angular.module('myApp',[])
.factory('communicateService', function($http) {
var blob = new Blob(['Hello World'], {type: 'text/plain'});
var returnData = function (data) {
return $http({
method: 'GET',
url: '../servlet',
params: {
'name': data.name,
'teleNumber': data.teleNumber
},
data: blob
}).success(function(data, status,headers,config) {
//成功將資料傳送到後臺並接收到資料
alert("從後臺獲取的資料為:" + data);
}).error(function(data, status, headers, config) {
//$http請求出現錯誤
alert("從後臺獲取資料失敗" + data);
});
}
return {
events: function(data) {
return returnData(data);
}
}
})
.controller('MyController', function ($scope, communicateService) {
$scope.communicate = function ($scope) {
alert("即將進行互動");
var message = {name: "RedLee", teleNumber: "13996414**"};
communicateService.events(message);
}
})
後臺servlet程式碼：
package servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class servlet
*/
@WebServlet("/servlet")
public class servlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public servlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
// 設定響應內容型別
String method = request.getMethod();
response.setContentType("text/html;charset=UTF-8");
/**
* 返回資訊
*/
if("GET".equals(method)){
response.getWriter().write("後臺接受資訊成功: \n" + "姓名: " + request.getParameter("name")
+ "\n" + "電話: " + request.getParameter("teleNumber"));
}
}
}