以JSON格式查询Microsoft Dynamics NAV 2013 Odata服务

我已经读到，ODataWebService也支持JSON格式。但是我怎么能得到呢

---

当我发送请求时，我只得到以下格式>application/atom+xml

尝试类似的方式：

$.ajax({
       type: "GET",
       contentType: "application/json; charset=utf-8",
       datatype: "json",
       url: odataSelect,
       beforeSend: function (XMLHttpRequest) { XMLHttpRequest.setRequestHeader("Accept", "application/json"); },
       success: function (data, textStatus, XmlHttpRequest) 
           { 
               ProcessReturnedEntities(data.d.results); 
               ProcessReturnedEntity(data.d);
           },
       error: function (XmlHttpRequest, textStatus, errorThrown) { alert('OData Select Failed: ' + odataSelect); }
   });

---

有关完整的示例，请参见此。

对于Windows 8应用程序中包含HTML和JS的WinJS，请参见以下内容：

WinJS.xhr({
    type: "GET",
    datatype: "json",
    url: 'http://localhost:7048/DynamicsNAV70/OData/P_21/',
    headers: {
        "Content-type": "application/json; charset=utf-8", "Accept": "application/json" },
    }).done(function (data, textStatus, XmlHttpRequest)  {
         console.log();
    },
    function (err) {
        console.log();
    });

---

请注意标题的不同定义。值完全相同。

要使用JSON而不是XML与OData web服务通信，您只需设置以下两个标头：

• Accept:application/json

• 内容类型：application/json；字符集=utf-8

或者，您也可以将

？$format=json

放在URL的末尾

无论您使用何种编程语言与Microsoft Dynamics NAV通信，这都是正确的。它对JavaScript、JAVA、Python、Ruby、PHP等也适用

---

演示代码 下面介绍如何从PHP执行基本GET请求：

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_URL, 'https://<Server>:<WebServicePort>/<ServerInstance>/OData/Company(\'<CompanyName>\')/customer(\'1\')'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);   
curl_setopt($ch, CURLOPT_POST, false);  

curl_setopt($ch, CURLOPT_USERPWD, 'username:password');   
curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Accept: application/json',          
        'Content-Type: application/json; charset=utf-8',
]);   

$response = json_decode(curl_exec($ch), TRUE);
echo json_encode($response, JSON_PRETTY_PRINT);
// Close handle
curl_close($ch);

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_URL, 'https://<Server>:<WebServicePort>/<ServerInstance>/OData/Company(\'<CompanyName>\')/customer'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);   
curl_setopt($ch, CURLOPT_POST, true);  

curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "Name" => "This is a test customer",
    ...
]));

curl_setopt($ch, CURLOPT_USERPWD, 'username:password');   
curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Accept: application/json',          
        'Content-Type: application/json; charset=utf-8',
]);   

$response = json_decode(curl_exec($ch), TRUE);
echo json_encode($response, JSON_PRETTY_PRINT);
curl_close($ch);

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_URL, 'https://<Server>:<WebServicePort>/<ServerInstance>/OData/Company(\'<CompanyName>\')/customer(\'1\')'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);   
curl_setopt($ch, CURLOPT_POST, true);  
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PATCH');

curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "Name" => "This is a test customer",
    ...
]));

curl_setopt($ch, CURLOPT_USERPWD, 'username:password');   
curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Accept: application/json',          
        'Content-Type: application/json; charset=utf-8',
        'If-Match: W/"\'' .  $etag . '\'"'
        // You can get your etag value by doing a get request first
]);   

$response = json_decode(curl_exec($ch), TRUE);
echo json_encode($response, JSON_PRETTY_PRINT);
curl_close($ch);

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_URL, 'https://<Server>:<WebServicePort>/<ServerInstance>/OData/Company(\'<CompanyName>\')/customer(\'1\')'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);   
curl_setopt($ch, CURLOPT_POST, true);  
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');

curl_setopt($ch, CURLOPT_USERPWD, 'username:password');   
curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Accept: application/json',          
        'Content-Type: application/json; charset=utf-8',
        'If-Match: W/"\'' .  $etag . '\'"'
        // You can get your etag value by doing a get request first
]);   

$response = json_decode(curl_exec($ch), TRUE);
echo json_encode($response, JSON_PRETTY_PRINT);
curl_close($ch);

改为使用查询字符串或数组将生成错误

处理此请求时发生错误。

，这可能会让您困惑很长一段时间

---

附注2

---

对于那些不喜欢处理原始cURL请求的人，我刚刚上传了一个基本的OO包装类，您可以在上找到。

谢谢！我只需要添加以下标题来获取请求：Accept:“application/json”如何使用jsonp跨域调用？

curl_setopt($ch, CURLOPT_POST, true);  
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "Name"=> "This is the name of my new customer"
]));