我们可以将之前章节中的代码用来从数据库中读取数据。
通过PHP Server从MySQL数据库中获取数据
<div ng-app="myApp" ng-controller="customersCtrl"> <table><tr ng-repeat="x in names"><td>{{ x.Name }}</td><td>{{ x.Country }}</td></tr></table></div><script>var app = angular.module('myApp', []);app.controller('customersCtrl', function($scope, $http) {$http.get("http://customers_mysql.php").success(function (response) {$scope.names = response.records;});});</script>
通过 Server从MSSQL数据库中获取数据
<div ng-app="myApp" ng-controller="customersCtrl"> <table><tr ng-repeat="x in names"><td>{{ x.Name }}</td><td>{{ x.Country }}</td></tr></table></div><script>var app = angular.module('myApp', []);app.controller('customersCtrl', function($scope, $http) {$http.get("http://customers_sql.aspx").success(function (response) {$scope.names = response.records;});});</script>
服务器代码示例
下面几小节列出了几种不同的服务器端代码，用来从数据库中获取数据。
1. 使用PHP和MySQL。返回JSON数据。
2. 使用PHP和MS Access。返回JSON数据。
3. 使用，VB和MS Access。返回JSON数据。
4. 使用，Razor和SQL Lite。返回JSON数据。
跨站HTTP请求
从不同的服务器请求数据被称为跨站HTTP请求（即cross-siteHTTP requests）。
跨站HTTP请求在web开发中很普遍。许多页面常常需要从不同的服务器加载各种资源，如CSS，images和scripts等。
在现代浏览器中，出于安全考虑，通过脚本进行跨站HTTP请求被严格限制，只允许访问同一站点内的数据。
下面这行代码被用在PHP中，用来允许跨站HTTP请求。
header("Access-Control-Allow-Origin: *");
1. 使用PHP和MySQL
<?phpheader("Access-Control-Allow-Origin: *");header("Content-Type: application/json; charset=UTF-8");$conn = new mysqli("myServer", "myUser", "myPassword", "Northwind");$result = $conn->query("SELECT CompanyName, City, Country FROM Customers");$outp = "";while($rs = $result->fetch_array(MYSQLI_ASSOC)) {if ($outp != "") {$outp .= ",";}$outp .= '{"Name":"' . $rs["CompanyName"] . '",';$outp .= '"City":"' . $rs["City"] . '",';$outp .= '"Country":"'. $rs["Country"]. '"}'; }$outp ='{"records":['.$outp.']}';$conn->close();echo($outp);?>
2. 使用PHP和MS Access
<?phpheader("Access-Control-Allow-Origin: *");header("Content-Type: application/json; charset=ISO-8859-1");$conn = new COM("ADODB.Connection");$conn->open("PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=Northwind.mdb");$rs = $conn->execute("SELECT CompanyName, City, Country FROM Customers");$outp = "";while (!$rs->EOF) {if ($outp != "") {$outp .= ",";}$outp .= '{"Name":"' . $rs["CompanyName"] . '",';$outp .= '"City":"' . $rs["City"] . '",';$outp .= '"Country":"'. $rs["Country"]. '"}'; $rs->MoveNext();}$outp ='{"records":['.$outp.']}';$conn->close();echo ($outp);?>
3. 使用，VB和MS Access
<%@ Import Namespace="System.IO"%><%@ Import Namespace="System.Data"%><%@ Import Namespace="System.Data.OleDb"%><%Response.AppendHeader("Access-Control-Allow-Origin", "*")Response.AppendHeader("Content-type", "application/json")Dim conn As OleDbConnectionDim objAdapter As OleDbDataAdapterDim objTable As DataTableDim objRow As DataRowDim objDataSet As New DataSet()Dim outpDim cconn = New OledbConnection("Provider=Microsoft.Jet.OLEDB.4.0;data source=Northwind.mdb")objAdapter = New OledbDataAdapter("SELECT CompanyName, City, Country FROM Customers", conn)objAdapter.Fill(objDataSet, "myTable")objTable=objDataSet.Tables("myTable")outp = ""c = chr(34)for each x in objTable.Rowsif outp <> "" then outp = outp & ","outp = outp & "{" & c & "Name" & c & ":" & c & x("CompanyName") & c & ","outp = outp & c & "City" & c & ":" & c & x("City") & c & "," outp = outp & c & "Country" & c & ":" & c & x("Country")& c & "}"nextoutp ="{" & c & "records" & c & ":[" & outp & "]}"response.write(outp)conn.close%>
4. 使用，Razor和SQL Lite
@{Response.AppendHeader("Access-Control-Allow-Origin", "*")Response.AppendHeader("Content-type", "application/json")var db = Database.Open("Northwind");var query = db.Query("SELECT CompanyName, City, Country FROM Customers");var outp =""var c = chr(34)}@foreach(var row in query){if outp <> "" then outp = outp + ","outp = outp + "{" + c + "Name" + c + ":" + c + @panyName + c + ","outp = outp + c + "City" + c + ":" + c + @row.City + c + ","outp = outp + c + "Country" + c + ":" + c + @row.Country+ c + "}"}outp ="{" + c + "records" + c + ":[" + outp + "]}"@outp
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