当 json 数据的值发布到 .net Web 服务时出现 Json Failed 错误？

Posted 2023-02-16

【中文标题】当 json 数据的值发布到 .net Web 服务时出现 Json Failed 错误？

【英文标题】：Getting Json Failed error while values of json data are posting to .net web service?

【发布时间】：2012-10-10 22:49:52

【问题描述】：

我将 json 数据发布到 .net 网络服务。我正在使用下面的代码。在检查 web 服务时它显示 MessageValue:Failed。

-(void)sentSignUpDetails NSLog(@"sentSignUpDetails.......");

NSString *jsonRequest = [NSString stringWithFormat:@"\"UserName\":\"%@\",\"Password\":\"%@\",\"DeviceToken\":\"%@\"",self.emailtextfield.text,self.passwordtextfield.text,appDelegate.Devicetoken];

NSLog(@"jsonRequest is %@", jsonRequest);
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://brewedlife.testshell.net/Brewedlife/AppSignup"]];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];

NSLog(@"1239");
NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]];

[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody: requestData];

con = [NSURLConnection connectionWithRequest:request delegate:self];

(void) 连接:(NSURLConnection *)connection didReceiveData:(NSData *)data1

 if (!data) 
  
    data = [[NSMutableData alloc] initWithData:data1];
  

 else 
  
    [data appendData:data1];
  

它得到 json failed 错误，如下所示 -JSONValue failed。错误跟踪是：（ "Error Domain=org.brautaset.JSON.ErrorDomain Code=3 \"Unrecognizedleading character\" UserInfo=0x15e880 NSLocalizedDescription=Unrecognizedleading character 请给出任何想法。谢谢

【参考方案1】：

像这样创建您的 JSON 请求

NSDictionary *jsonDict = [NSDictionary 字典WithObjectsAndKeys： @"ValueOfUsername", @"keyOfUserName", @"ValueOfPassword", @"Password", @"ValueOfDeviceToken", @"DeviceToken",nil]; NSString *req = [jsonDict JSONRepresentation];

如果您收到编码错误，请查看这是否有效 NSUTF8StringEncoding