NSMutableURLRequest setHTTPBody

Question

我从一个不同的问题采取了这段代码，我的脚本文件有更多的输入，而不仅仅是mydata，进入mydata的数据也不应该是静态文本，它应该来自NSString。

所以我的问题是，我如何发布多个数据到我的脚本，我将如何从NSString输入值，因为我的理解是我不能使用N数据类型与NSString。不知道这是否是正确的术语，所以请纠正我，如果我错了。使用以下

NSMutableData *data = [NSMutableData data]; 

NSString *number = numberIB.text; 
NSString *name = nameIB.text; 

NSString *nameString = [[NSString alloc] initWithFormat:@"name=", name]; 
NSString *numberString = [[NSString alloc] initWithFormat:@"number=", number]; 

NSLog(nameString); 
NSLog(numberString); 

[data appendData:[nameString dataUsingEncoding:NSUTF8StringEncoding]]; 
[data appendData:[numberString dataUsingEncoding:NSUTF8StringEncoding]]; 

NSURL *url = [NSURL URLWithString:@"http://www.siteaddress.com/test.php"]; 
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; 

[request setHTTPMethod:@"POST"]; 
//[request setHTTPBody:[NSData dataWithBytes:data length:strlen(data)]]; 
[request setHTTPBody:data]; 

NSURLResponse *response; 
NSError *err; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err]; 
//NSString *responseString = [[NSString alloc] initWithFormat:@"%@", responseData]; 
NSLog(@"responseData: %@", responseData); 

答案nameString和numberString的NSLogs回来名

const char *bytes = "mydata=Hello%20World"; 

NSURL *url = [NSURL URLWithString:@"http://www.mywebsite.com/script.php"]; 
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; 

[request setHTTPMethod:@"POST"]; 
[request setHTTPBody:[NSData dataWithBytes:bytes length:strlen(bytes)]]; 

NSURLResponse *response; 
NSError *err; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err]; 
//NSString *responseString = [[NSString alloc] initWithFormat:@"%@", responseData]; 
NSLog(@"responseData: %@", responseData); 

userData = responseData; 

新问题=和数量=没有任何数据。导致没有数据被发送到我的脚本。

Answer 1

您可以使用NSMutableData对象追加字节根据需要，像这样：

NSMutableData *data = [NSMutableData data]; 
const char *bytes = "mydata=Hello%20World"; 
[data appendBytes:bytes length:strlen(bytes)]; 

//... 

const char *moreBytes = "&someMoreData=Fantastic"; 

[data appendBytes:moreBytes length:strlen(moreBytes)]; 

编辑：如果你想一个NSString追加到数据缓冲区，可以使用-[NSString dataUsingEncoding:]，并通过它关闭到-appendData:

NSString *someString = @"blah"; 
[data appendData:[someString dataUsingEncoding:NSUTF8StringEncoding]]; 

[request setHTTPBody:data];