NSString*unescaped =@"http=中文";
NSString*escapedString = [unescapedstringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSetURLHostAllowedCharacterSet]];
NSLog(@"escapedString: %@", escapedString);
NSString*unescaped =@"http=中文";
NSString*escapedString = [unescapedstringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSetURLHostAllowedCharacterSet]];
NSLog(@"escapedString: %@", escapedString);