Question

我必须在iPhone中实现WCF Web服务。但问题是，当我尝试传递一个对象然后它发送我null值，当我发布对象的nil值然后它给我回应

SDZAuthService* service = [SDZAuthService service];
    service.logging = YES;
     service.username = [[NSUserDefaults standardUserDefaults] objectForKey:@"USERID"];
    service.password = [[NSUserDefaults standardUserDefaults] objectForKey:@"PASSWORD"];


    // Returns SDZLoginUserResult*. 
    //[service LoginFBUser:self action:@selector(LoginFBUserHandler:) fbUserId: @"" ctx: [[SDZServiceContext alloc] init]];

    SDZServiceContext *object=[[SDZServiceContext alloc]init];

    object.CallerUserId = 1;
    object.CallerUserHostAddress = @"127.0.0.1";
    object.ContextData = nil;
    // Returns SDZLoginUserResult*. 
    [service LoginUser:self action:@selector(LoginUserHandler:) userName:service.username password:service.password ctx:object];

如果我传递nil值而不是将对象传递给ctx：那么它会向我发送reposne但是对于object它会给我null值。

感谢您的帮助 Avnish

Answer 1

您可能在Objective-C nil is for reference objects and NULL is for non-object pointers (C references & such)中知道这一点。听起来客户端代码在进行服务调用后没有初始化ctx。如果您控制WCF服务，则应enable message logging查看服务正在接收的内容。

在wcf问题中传递对象？

1 个答案: