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我的 App_Code/IGetEmployees.vb 文件

<ServiceContract()> _
Public Interface IGetEmployees
 <OperationContract()> _
<WebInvoke(Method:="POST", ResponseFormat:=WebMessageFormat.Json, BodyStyle:=WebMessageBodyStyle.Wrapped, UriTemplate:="json/contactoptions")> _
Function GetAllContactsMethod(strCustomerID As String) As List(Of NContactNames)
End Interface

我的 App_Code/GetEmployees.vb 文件

   <WebMethod()> _
 <ScriptMethod(ResponseFormat:=ResponseFormat.Json)> _
Public Function GetAllContactsMethod(strCustomerID As String) As List(Of NContactNames) Implements IGetEmployees.GetAllContactsMethod
    Utilities.log("Hit get all contacts at 56")
    Dim intCustomerID As Integer = Convert.ToInt32(strCustomerID)
    Dim lstContactNames As New List(Of NContactNames)
 'I add some contacts to the list.
Utilities.log("returning the lst count of " & lstContactNames.Count)
    Return lstContactNames
End Function

NContactNames 是一个具有 3 个属性的类。所以我正在使用 ASP.NET Web 服务从 SQL 服务器检索信息并以 JSON 格式将其传递给我的 iPad。我在传递参数时遇到问题。所以就像你看到的,我有 2 个文件 IGetEmployees.vb 和 GetEmployees.vb。我正在实现方法 GetAllContactsMethod。发生的事情是 GetEmployees.vb 文件 (Utilities.log) 中的两行,它们永远不会被记录。该函数根本没有被调用。

我的目标 c 代码来调用这个函数

    NSString *param = [NSString stringWithFormat:@"strCustomerID=%@",strCustomerID];
    jUrlString = [NSString stringWithFormat:@"%@",@"http://xyz-dev.com/GetEmployees.svc/json/contactoptions"];
    jurl = [NSURL URLWithString:jUrlString];
    NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:jurl];

    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:[param dataUsingEncoding:NSUTF8StringEncoding]];
    NSLog(@" request string is %@",[[request URL] absoluteString]);
    NSLog(@"Done");

    NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
    if(theConnection)
    {
        jData = [NSMutableData data];
        NSError *jError;
        NSMutableDictionary *json =[NSJSONSerialization JSONObjectWithData:jData options:kNilOptions error:&jError];
        NSLog(@"%@",json); //Gets Here and prints (null)
        NSLog(@"Done"); //prints this as well.

    }
    else
    {
        NSLog(@"No");
    }

在发布此代码时,“if”语句为真并且(null)被打印,然后是“Done”我的绝对请求的输出是:请求字符串是http://xyz-dev.com/GetEmployees.svc/ json/contactoptions 这是我第一次写 json 来接受参数。所以我可能会遗漏一些东西。它是什么?为什么在 Visual Studio 端根本没有调用该函数。如果您需要更多信息,请询问。谢谢...

4

1 回答 1

0

为此,这是 Objetive-C 中的方法。

-(void) insertEmployeeMethod

{

    if(firstname.text.length && lastname.text.length && salary.text.length)

    {

        NSString *str = [BaseWcfUrl stringByAppendingFormat:@"InsertEmployee/%@/%@/%@",firstname.text,lastname.text,salary.text];

        NSURL *WcfSeviceURL = [NSURL URLWithString:str];
        NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];

        [request setURL:WcfSeviceURL];

        [request setHTTPMethod:@"POST"];

        // connect to the web

        NSData *respData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

        // NSString *respStr = [[NSString alloc] initWithData:respData encoding:NSUTF8StringEncoding];


        NSError *error;

        NSDictionary* json = [NSJSONSerialization 

                              JSONObjectWithData:respData 

                              options:NSJSONReadingMutableContainers 

                              error:&error];  



        NSNumber *isSuccessNumber = (NSNumber*)[json objectForKey:@"InsertEmployeeMethodResult"];


        //create some label field to display status
        status.text = (isSuccessNumber && [isSuccessNumber boolValue] == YES) ? [NSString stringWithFormat:@"Inserted %@, %@",firstname.text,lastname.text]:[NSString stringWithFormat:@"Failed to insert %@, %@",firstname.text,lastname.text];
    }
}

在运行代码之前,请使用 POSTMAN 测试您的 URL,这是来自 Google Chrome 的应用程序。问候。

于 2015-04-29T16:20:14.827 回答