问题
I am a .Net Software developer .I have Created a WCF Rest API for User Validation Following is its signature.
[OperationContract]
[WebInvoke(RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Bare,
UriTemplate = "/Validate", Method = "POST")]
UserListResponse ValidateUser(Login obj);
It is working fine in fiddler with following Request Body
{"Username":"admin",Password:"111"}
My problem is, it is not accessible from Iphone using http post method but it is working fine in Android Http post method.
Following are my Code :
NSError *theError = nil;
NSArray *keys = [NSArray arrayWithObjects:@"Username", @"Password", nil];
NSArray *objects = [NSArray arrayWithObjects:@"admin", @"111", nil];
NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
NSString *myJSONString =[jsonDictionary JSONRepresentation];
NSData *myJSONData =[myJSONString dataUsingEncoding:NSUTF8StringEncoding];
NSLog(@"myJSONString :%@", myJSONString);
NSLog(@"myJSONData :%@", myJSONData);
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://192.168.1.192/ShopMonkeyService/ShopMonkey.svc/Validate"]];
[request setHTTPBody:myJSONData];
[request setHTTPMethod:@"POST"];
NSURLResponse *theResponse =[[NSURLResponse alloc]init];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error:&theError];
NSLog(@"response : %@", theResponse);
NSLog(@"error : %@", theError);
NSLog(@"data : %@", data);
NSMutableString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"string: %@", string);
NSDictionary *jsonDictionaryResponse = [string JSONValue];
NSLog(@"dic: %@", jsonDictionaryResponse);
Following are my response Error :
2012-07-06 11:49:04.201 ShopMonkey[524:207] -JSONRepresentation failed. Error trace is: (null)
2012-07-06 11:49:04.201 ShopMonkey[524:207] myJSONString :{"Password":"111","Username":"admin"}
2012-07-06 11:49:04.201 ShopMonkey[524:207] myJSONData :<7b225061 7373776f 7264223a 22313131 222c2255 7365726e 616d6522 3a226164 6d696e22 7d>
2012-07-06 11:51:13.312 ShopMonkey[524:207] response : (null)
2012-07-06 11:51:13.312 ShopMonkey[524:207] error : Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo=0x6041370 {NSErrorFailingURLStringKey=http://192.168.1.192/ShopMonkeyService/ShopMonkey.svc/Validate, NSErrorFailingURLKey=http://192.168.1.192/ShopMonkeyService/ShopMonkey.svc/Validate, NSLocalizedDescription=The network connection was lost., NSUnderlyingError=0x6043a90 "The network connection was lost."}
2012-07-06 11:51:13.312 ShopMonkey[524:207] data : (null)
2012-07-06 11:51:13.313 ShopMonkey[524:207] string:
2012-07-06 11:51:13.313 ShopMonkey[524:207] -JSONValue failed. Error trace is: (
"Error Domain=org.brautaset.JSON.ErrorDomain Code=11 \"Unexpected end of string\" UserInfo=0x6041b90 {NSLocalizedDescription=Unexpectedend of string}"
)
2012-07-06 11:51:13.313 ShopMonkey[524:207] dic: (null)
Can anyone point me out what is going wrong.
Thanks in advance vijay
see my error details vivek
Error Details:
2012-07-06 16:54:37.416 ShopMonkey[1895:40b] -[CJSONSerializer serializeDictionary:]: unrecognized selector sent to instance 0x4c03740
2012-07-06 16:54:37.417 ShopMonkey[1895:40b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CJSONSerializer serializeDictionary:]: unrecognized selector sent to instance 0x4c03740'
* Call stack at first throw:
(
0 CoreFoundation 0x00ec2be9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x010175c2 objc_exception_throw + 47
2 CoreFoundation 0x00ec46fb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x00e34366 forwarding + 966
4 CoreFoundation 0x00e33f22 _CF_forwarding_prep_0 + 50
5 ShopMonkey 0x000030c5 -[ShopMonkeyViewController signinbtnclick] + 425
6 UIKit 0x0034fa6e -[UIApplication sendAction:to:from:forEvent:] + 119
7 UIKit 0x003de1b5 -[UIControl sendAction:to:forEvent:] + 67
8 UIKit 0x003e0647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
9 UIKit 0x003df1f4 -[UIControl touchesEnded:withEvent:] + 458
10 UIKit 0x003740d1 -[UIWindow _sendTouchesForEvent:] + 567
11 UIKit 0x0035537a -[UIApplication sendEvent:] + 447
12 UIKit 0x0035a732 _UIApplicationHandleEvent + 7576
13 GraphicsServices 0x0177ca36 PurpleEventCallback + 1550
14 CoreFoundation 0x00ea4064 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 52
15 CoreFoundation 0x00e046f7 __CFRunLoopDoSource1 + 215
16 CoreFoundation 0x00e01983 __CFRunLoopRun + 979
17 CoreFoundation 0x00e01240 CFRunLoopRunSpecific + 208
18 CoreFoundation 0x00e01161 CFRunLoopRunInMode + 97
19 GraphicsServices 0x0177b268 GSEventRunModal + 217
20 GraphicsServices 0x0177b32d GSEventRun + 115
21 UIKit 0x0035e42e UIApplicationMain + 1160
22 ShopMonkey 0x000026d8 main + 102
23 ShopMonkey 0x00002669 start + 53
)
terminate called after throwing an instance of 'NSException'
回答1:
NSURL *url = [NSURL URLWithString:@"http://alkjdlkjaflkdjflakjdf"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:30.0];
NSString *req;
req = [NSString stringWithFormat:@"username=%@&pass=%@",userName,Password];
[request setHTTPMethod:@"POST"];
[request setHTTPBody: [req dataUsingEncoding:NSISOLatin1StringEncoding]];
NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
[connection start];
if (connection) {
receivedData = [[NSMutableData alloc]initWithLength:0]; // an ivar of type NSMutableData
} else {
UIAlertView *failAlert = [[UIAlertView alloc]initWithTitle:@"" message:@"Could Not Connect" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[failAlert show];
}
Now use the follwing delegates to handle the request
-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData *)data
{
[receivedData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
receivedData = nil;
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"" message:[NSString stringWithFormat:@"%@",error.localizedDescription] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
[self performSelector:@selector(getData:) withObject:receivedData afterDelay:0];
}
Now you have to parse the data you have in the getData function called above
-(void)getData:(NSData*)response{
NSError *erro;
SBJSON *parse = [[SBJSON alloc]init];
// have to include SBJSON lib else you can use the inbuild NSJSONSerialization
NSString *jsonString = [[NSString alloc] initWithData:response
encoding:NSUTF8StringEncoding];
NSDictionary *jsonData = [parse objectWithString:jsonString error:&erro];
NSArray *allEvents = [jsonData objectForKey:@"Your_OBJECT"];
if(![allEvents isKindOfClass:[NSNull class]] && [allEvents count] > 0)
{
// now do what you want with the data
}
}
回答2:
for Key by value passing in JSON your should go in this direction ..
NSArray *keys = [NSArray arrayWithObjects:@"username", @"password", @"preference", @"uid", nil];
NSArray *objects = [NSArray arrayWithObjects:@"accuser", @"accpass", @"abc_region", @"100", nil];
NSDictionary *theRequestDictionary = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
NSURL *theURL = [NSURL URLWithString:@"http://url.com/request.php"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:theURL cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10.0f];
[theRequest setHTTPMethod:@"POST"];
[theRequest setValue:@"application/json-rpc" forHTTPHeaderField:@"Content-Type"];
NSString *theBodyString = [[CJSONSerializer serializer] serializeDictionary:theRequestDictionary];
NSLog(@"%@", theBodyString);
NSData *theBodyData = [theBodyString dataUsingEncoding:NSUTF8StringEncoding];
// NSLog(@"%@", theBodyData);
[theRequest setHTTPBody:theBodyData];
NSURLResponse *theResponse = NULL;
NSError *theError = NULL;
NSData *theResponseData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&theResponse error:&theError];
NSString *theResponseString = [[[NSString alloc] initWithData:theResponseData encoding:NSUTF8StringEncoding] autorelease];
NSLog(theResponseString);
NSDictionary *theResponseDictionary = [[CJSONDeserializer deserializer] deserialize:theResponseString];
NSLog(@"%@", theResponseDictionary);
NSString *theGreeting = [theResponseDictionary objectForKey:@"greeting"];
[self setValue:theGreeting forKey:@"greeting"];
Just and check .. one more thing u will find this file CJSONSerializer from here CJSONSerializer file path
.................
来源：https://stackoverflow.com/questions/11359593/could-not-make-json-request-body-from-iphone