AngularJS SQL

作者: Arvin Chen 分类: JavaScript 来源: Break易站(www.breakyizhan.com)

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("http://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) {    $http.get("http://www.runoob.com/try/angularjs/data/Customers_SQL.aspx")    .success(function (response) {$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


<?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. PHP 和 MS Access 代码实例


<?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. ASP.NET, VB 和 MS Access 代码实例


<pre><%@ Import Namespace="System.IO"%></pre><pre><%@ Import Namespace="System.Data"%></pre>

<pre><%@ Import Namespace="System.Data.OleDb"%></pre><pre><%

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%></pre>

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

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