When iOS POST requests contain Chinese Characters

When iOS POST requests contain Chinese Characters

Hey, some problems with the recent post request. When there is a Chinese character, the request fails.

The following are two examples:

1: Usually post requests: (failure in Chinese)

// 1: Set the URL

NSString * host = HOST;

NSString * usename = @ "fuck ";

NSString * queryString = [NSStringstringWithFormat: @ "/app/clickTableScreen? UserName =%@ & idfa =%@ & operator =%@ & systemVersion =%@ & networkState =%@ & deviceName =%@ & memorySize =%@ & model = % @", usename, adId, [self checkCarrier], phoneVersion, netStr, userPhoneName, totalDiskSpaceStr, [LoginViewControllerdeviceString];

NSLog (@ "querString: % @", queryString );

// Complete set parameters

NSString * urlString = [NSStringstringWithFormat: @ "% @", host, queryString];

NSLog (@ "parameter: % @", urlString );

// Obtain the complete url

NSURL * url1 = [NSURLURLWithString: urlString];

// 2: Request

NSMutableURLRequest * request = [[NSMutableURLRequestalloc] initWithURL: urlcachePolicy: NSURLRequestUseProtocolCachePolicytimeoutInterval: 10];

[Request setHTTPMethod: @ "POST"];

// Step 3: connect to the server

NSError * error = nil;

NSData * reqData = [NSURLConnectionsendSynchronousRequest: request returningResponse: nilerror: & error];

/// 3: Convert the request to binary

// NSData * reqData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil];

If (reqData = nil ){

If (error) {// This write method has the advantage of listing the cause if the data parsing fails, I did not know the cause because I wrote this sentence: (Error Domain = NSURLErrorDomain Code =-1002 "unsupported URL" UserInfo = 0x14ed24c0 {NSUnderlyingError = 0x)

NSLog (@ "error = % @", error );

}

UIAlertView * alert = [[UIAlertViewalloc] initWithTitle: @ "prompt" message: @ "the network is unstable. Please try again later! "Delegate: nilcancelButtonTitle: @" cancel "otherButtonTitles: @" OK ", nil];

[Alert show];

Return;

} Else {

NSLog (@ "error = % @", error );

}

NSDictionary * reqDic = [NSJSONSerializationJSONObjectWithData: reqData options: NSJSONReadingAllowFragmentserror: nil];

NSString * info = [NSStringstringWithFormat: @ "% @", [reqDicobjectForKey: @ "info"];

NSLog (@ "parameter dictionary: % @", reqDic );

// 4: print data

NSString * errcode = [NSStringstringWithFormat: @ "% @", [reqDicobjectForKey: @ "errcode"];

If ([errcode iscode tostring: @ "0"]) {

NSLog (@ "succeeded ");

} Else

{

UIAlertView * alert = [[UIAlertViewalloc] initWithTitle: @ "failed to get the ad ID" message: info delegate: selfcancelButtonTitle: @ "OK" otherButtonTitles: nil, nil];

[Alert show];

}

}

2: Comparison of the second method (in fact, a sentence is added)

/1: Set the URL

NSString * host = HOST;

NSString * usename = @ "fuck ";

NSString * queryString = [NSString stringWithFormat: @ "/app/clickTableScreen? UserName =%@ & idfa =%@ & operator =%@ & systemVersion =%@ & networkState =%@ & deviceName =%@ & memorySize =%@ & model = % @", usename, adId, [self checkCarrier], phoneVersion, netStr, userPhoneName, totalDiskSpaceStr, [LoginViewController deviceString];

NSLog (@ "querString: % @", queryString );

// Complete set parameters

NSString * urlString = [NSString stringWithFormat: @ "% @", host, queryString];

NSLog (@ "parameter: % @", urlString );

// Obtain the complete url

// Transcoding is required when Chinese characters are available

NSString * urlstr = [urlStringstringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];

NSURL * url = [NSURLURLWithString: urlstr];

// 2: Request

NSMutableURLRequest * request = [[NSMutableURLRequest alloc] initWithURL: url cachePolicy: NSURLRequestUseProtocolCachePolicy timeoutInterval: 10];

[Request setHTTPMethod: @ "POST"];

// Step 3: connect to the server

NSError * error = nil;

NSData * reqData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: & error];

/// 3: Convert the request to binary

// NSData * reqData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil];

If (reqData = nil ){

If (error) {// This write method has the advantage of listing the cause if the data parsing fails, I did not know the cause because I wrote this sentence: (Error Domain = NSURLErrorDomain Code =-1002 "unsupported URL" UserInfo = 0x14ed24c0 {NSUnderlyingError = 0x)

NSLog (@ "error = % @", error );

}

UIAlertView * alert = [[UIAlertView alloc] initWithTitle: @ "prompt" message: @ "the network is unstable. Please try again later! "Delegate: nil cancelButtonTitle: @" cancel "otherButtonTitles: @" OK ", nil];

[Alert show];

Return;

} Else {

NSLog (@ "error = % @", error );

}

NSDictionary * reqDic = [NSJSONSerialization JSONObjectWithData: reqData options: NSJSONReadingAllowFragments error: nil];

NSString * info = [NSString stringWithFormat: @ "% @", [reqDic objectForKey: @ "info"];

NSLog (@ "parameter dictionary: % @", reqDic );

// 4: print data

NSString * errcode = [NSString stringWithFormat: @ "% @", [reqDic objectForKey: @ "errcode"];

If ([errcode iscode tostring: @ "0"]) {

NSLog (@ "succeeded ");

} Else

{

UIAlertView * alert = [[UIAlertView alloc] initWithTitle: @ "failed to get the ad ID" message: info delegate: selfcancelButtonTitle: @ "OK" otherButtonTitles: nil, nil];

[Alert show];

}

}