我正在使用 jQuery 从 API 获取一些数据。
流阅读器验证对 api 的调用并获取如下流:
public string StreamManagerUrlHandler(string requestUrl)
{
try
{
Uri reUrl = new Uri(requestUrl);
WebRequest webRequest;
WebResponse webResponse;
webRequest = HttpWebRequest.Create(reUrl) as HttpWebRequest;
webRequest.Method = WebRequestMethods.Http.Get;
webRequest.ContentType = "application/x-www-form-urlencoded";
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
webRequest.Credentials = new NetworkCredential(
ConfigurationManager.AppSettings["PoliceAPIUsername"].ToString(),
ConfigurationManager.AppSettings["PoliceAPIPassword"].ToString());
// Return the response.
webResponse = webRequest.GetResponse();
using (StreamReader reader = new StreamReader(webResponse.GetResponseStream(), encode))
{
string results = reader.ReadToEnd();
reader.Close();
webResponse.Close();
return results;
}
}
catch (Exception e)
{
return e.Message;
}
}
我的服务如下所示:
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//[System.Web.Script.Services.ScriptService]
[ScriptService()]
public class PoliceApi : System.Web.Services.WebService {
public PoliceApi () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod(true)]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public string requestLocalCrime(string lat, string lng)
{
StreamManager streamMan = new StreamManager();
return streamMan.StreamManagerUrlHandler("http://policeapi2.rkh.co.uk/api/crimes-street/all-crime?lat=" + lat + "&lng=" + lng + "");
}
// Method for getting the data database was Last updated
[WebMethod(true)]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public String requestLastTimeUpdated()
{
StreamManager streamMan = new StreamManager();
return streamMan.StreamManagerUrlHandler("http://policeapi2.rkh.co.uk/api/crime-last-updated");
}
// Method for getting the data database was Last updated
[WebMethod(true)]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public String locateNeighbourhood(string lat, string lng)
{
StreamManager streamMan = new StreamManager();
return streamMan.StreamManagerUrlHandler("http://policeapi2.rkh.co.uk/api/locate-neighbourhood?q=" + lat + "%2C" + lng + "");
}
[WebMethod(true)]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public string neighbourhoodTeam(string force, string neighbourhood)
{
StreamManager streamMan = new StreamManager();
return streamMan.StreamManagerUrlHandler("http://policeapi2.rkh.co.uk/api/" + force + "%2F" + neighbourhood + "%2F" + "people");
}
}
作为示例,其中一个 jQuery ajax 调用如下所示:
// Getting last time the API data was updated
$.ajax({
type: "GET",
contentType: "application/json; charset=utf-8",
url: "../police/PoliceApi.asmx/requestLastTimeUpdated",
dataType: "json",
success: function (data) {
PoliceApp.mapForm.data('lastupdated', $.parseJSON(data.d).date);
},
error: function (res, status) {
if (status === "error") {
// errorMessage can be an object with 3 string properties: ExceptionType, Message and StackTrace
var errorMessage = $.parseJSON(res.responseText);
alert(errorMessage.Message);
}
}
});
在本地一切正常。当我将东西上传到远程服务器时,我得到:
{"Message":"There was an error processing the request.","StackTrace":"","ExceptionType":""}
获取http://hci.me.uk/police/PoliceApi.asmx/requestLastTimeUpdated
401未经授权
在制作 asmx 服务之前,我让它们通过 aspx 使用,尽管这会导致一些有关性能和序列化的问题,但它曾经对某些服务正常工作。API 需要对所有 get 请求进行身份验证才能正常工作。