AngularJS学习之旅—AngularJS SQL(十二)

一、使用 PHP 从 MySQL 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("Customers_MySQL.php")

    .success(function (response) {$scope.names = response.records;});

});

</script>

二、ASP.NET 中执行 SQL 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("Customers_SQL.aspx")

    .success(function (response) {$scope.names = response.records;});

});

</script>

三、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。

四、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。

　　eg： header("Access-Control-Allow-Origin: *");

　　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()

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()

}

@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

巴特西

AngularJS学习之旅—AngularJS SQL(十二)

1. PHP 和 MySql 代码实例

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