AngularJS SQL
在前面章节中的代码也可以用于读取数据库中的数据。
使用 PHP 从 MySQL 中获取数据
AngularJS 实例
<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) {
$http.get(“https://www.runoob.com/try/angularjs/data/Customers_MySQL.php”
.success(function (response) {$scope.names = response.records;});
});
</script>
ASP.NET 中执行 SQL 获取数据
AngularJS 实例
<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) {
$http.get(“https://www.runoob.com/try/angularjs/data/Customers_SQL.aspx”
.success(function (response) {$scope.names = response.records;});
});
</script>
服务端代码
以下列出了几种服务端代码类型：
- 使用 PHP 和 MySQL。返回 JSON。
- 使用 PHP 和 MS Access。返回 JSON。
- 使用 ASP.NET, VB, 及 MS Access。 返回 JSON。
- 使用 ASP.NET, Razor, 及 SQL Lite。 返回 JSON。
跨域 HTTP 请求
如果你需要从不同的服务器（不同域名）上获取数据就需要使用跨域 HTTP 请求。
跨域请求在网页上非常常见。很多网页从不同服务器上载入 CSS, 图片，Js脚本等。
在现代浏览器中，为了数据的安全，所有请求被严格限制在同一域名下，如果需要调用不同站点的数据，需要通过跨域来解决。
以下的 PHP 代码运行使用的网站进行跨域访问。
header(“Access-Control-Allow-Origin: *”);
更多跨域访问解决方案可参阅：PHP Ajax 跨域问题最佳解决方案。
1. PHP 和 MySql 代码实例
<?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. PHP 和 MS Access 代码实例
<?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. ASP.NET, VB 和 MS Access 代码实例
<%@ 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. ASP.NET, VB Razor 和 SQL Lite 代码实例
@{
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
+ @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
