AngularJS教程
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SQL
從運行 MySQL 的 PHP 服務(wù)器獲取數(shù)據(jù)
AngularJS 實例
<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) {
$http.get("customers_mysql.php")
.then(function (response) {$scope.names = response.data.records;});
});
</script>
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從運行 SQL 的 ASP.NET 服務(wù)器獲取數(shù)據(jù)
AngularJS 實例
<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) {
$http.get("customers_sql.aspx")
.then(function (response) {$scope.names = response.data.records;});
});
</script>
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服務(wù)器代碼示例
以下部分列出了用于獲取 SQL 數(shù)據(jù)的服務(wù)器代碼。
- 使用 PHP 和 MySQL。返回 JSON。
- 使用 PHP 和 MS Access。返回 JSON。
- 使用 ASP.NET、VB 和 MS Access。返回 JSON。
- 使用 ASP.NET、Razor 和 SQL Lite。返回 JSON。
跨站點 HTTP 請求
從不同服務(wù)器（除請求頁面外的其他服務(wù)器）請求數(shù)據(jù)稱為跨站點 HTTP 請求。
跨站點請求在網(wǎng)絡(luò)上很常見。許多頁面從不同的服務(wù)器加載 CSS，圖像和腳本。
出于安全原因，現(xiàn)代瀏覽器中的腳本發(fā)出的跨站點 HTTP 請求被限制為同一站點。
在我們的 PHP 示例中，已添加以下行以允許跨站點訪問。
header("Access-Control-Allow-Origin: *");
1. 服務(wù)器代碼 PHP 和 MySQL
<?php
header("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. 服務(wù)器代碼 PHP 和 MS Access
<?php
header("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. 服務(wù)器代碼 ASP.NET、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 OleDbConnection
Dim objAdapter As OleDbDataAdapter
Dim objTable As DataTable
Dim objRow As DataRow
Dim objDataSet As New DataSet()
Dim outp
Dim c
conn = 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.Rows
if 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 & "}"
next
outp ="{" & c & "records" & c & ":[" & outp & "]}"
response.write(outp)
conn.close
%>
4. 服務(wù)器代碼 ASP.NET、Razor C# 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 != "") {outp = outp + ","}
outp = outp + "{" + c + "Name" + c + ":" + c + @row.CompanyName + 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