Question

我知道如何使用POST将数据（UITextField值）发布到JSON url。但是现在我尝试使用GET方法将数据发布到server.I有10个textFields.I尝试过这样的方式

NSString *post1 =[NSString stringWithFormat:@"?&dealImage=%@&dealcatid=%@&DeaTitle=%@&DealDesc=%@&price=%@&cityId=%@&StartDate=%@&EndDate=%@&FromTime=%@&ToTime=%@",
     strEncoded, string1 ,pTitle.text ,Description.text ,pPrice.text,string2,beginDate,endDate,beginTime,endTime];



     NSData *postData = [post1 dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];


     NSString *postLength = [NSString stringWithFormat:@"%d",[postData length]];


    NSLog(@"array array %@",postLength);

     NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;


     [request setURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://192.168.3.125:8090/SaveDollar/rest/deals/add"]]];


     NSLog(@"getData%@",request);

     [request setHTTPMethod:@"GET"];



     [request setValue:postLength forHTTPHeaderField:@"Content-Length"];


     [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"];



     [request setHTTPBody:postData];

     NSLog(@"getData%@",request);

     con3 = [[NSURLConnection alloc]initWithRequest:request delegate:self];

     if(con3)
     {     
     webData3=[NSMutableData data];
     NSLog(@"Connection successfull");
     NSLog(@"GOOD Day My data %@",webData3);
     }
     else
     {
     NSLog(@"connection could not be made");
     }



- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {

   if (connection ==con3)
    {
          [webData3 setLength:0];

    }

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {

    if (connection ==con3)
    {
    [webData3 appendData:data];

    }
}

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    if (connection ==con3) {
        NSLog(@"SOMETHING WENT WRONG WITH URL3");

    }

}
   - (void)connectionDidFinishLoading:(NSURLConnection *)connection{
   if (connection==con3)
    {  NSLog(@"Succeeded! Received %d bytes of data",[webData3 length]);
        NSLog(@"Data is %@",webData3);
         NSString *responseText = [[NSString alloc] initWithData:webData3 encoding: NSASCIIStringEncoding];
        NSLog(@"Response: %@", responseText);//holds textfield entered value
         NSString *newLineStr = @"\n";
        responseText = [responseText stringByReplacingOccurrencesOfString:@"<br />" withString:newLineStr];
        NSLog(@"ResponesText %@",responseText);
    }
 }

在提交控制台之后，将显示此消息＆＃34; STERETHING WENT WRENT WITH URL3＆＃34; 我知道发帖但现在我需要发布数据和获取响应。所以我使用GET方法，但我没有得到回应。所以请给我任何想法。然后请告诉我我的代码有什么问题。

Answer 1

你应该收集这样的回复数据：

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{
    _responseData = [[NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data 
{
    [_responseData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error 
{
    // connection fail
}

其中数据为NSMutableData *_responseData;

Answer 2

使用回调功能

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

如果调用失败，错误变量将帮助您查看出现的问题，以便您自己解决。

可能有用的一件事是将您的请求的内容类型字段设置为application / json。

如何在数据发布到URL时获取响应

2 个答案: