在做一个HTTPS连接时, 要客户端合成一段HTTPS地址
如果地址含中文的话程序会crash, 检查发现原来是中文没有转码的原因
在NSString库里面找到了下面两个方法
- (NSString *)stringByAddingPercentEscapesUsingEncoding:(NSStringEncoding)encoding
- (NSString *)stringByReplacingPercentEscapesUsingEncoding:(NSStringEncoding)encoding
试了下, 有效
1 NSString* string1 = @"https://www.cloudsafe.com/文件夹"; 2 3 NSString* string2 = [string1 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 4 NSString* string3 = [string2 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 5 6 NSString* string4 = [string2 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 7 NSString* string5 = [string3 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 8 9 NSString* string6 = [string4 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 10 NSString* string7 = [string5 stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
输出string1-7结果如下
string1:https://www.cloudsafe.com/文件夹 string2:https://www.cloudsafe.com/%E6%96%87%E4%BB%B6%E5%A4%B9 string3:https://www.cloudsafe.com/%25E6%2596%2587%25E4%25BB%25B6%25E5%25A4%25B9 string4:https://www.cloudsafe.com/文件夹 string5:https://www.cloudsafe.com/%E6%96%87%E4%BB%B6%E5%A4%B9 string6:https://www.cloudsafe.com/文件夹 string7:https://www.cloudsafe.com/文件夹
简单说下我是如何使用的:
在合成URL后, 给整个String转码两次
1 NSMutableString *address = [[NSMutableString stringWithString:SetNiChengStringWithoutUserNameAndNiCheng] mutableCopy]; 2 address = [[address stringByAppendingString:app.name] mutableCopy]; 3 address = [[address stringByAppendingString:@"/"] mutableCopy]; 4 address = [[address stringByAppendingString:_nameTextField.text] mutableCopy]; 5 address = [[address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] mutableCopy]; 6 address = [[address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] mutableCopy];
服务器端如何只是简单存储, 服务器接收数据后可以不用转码成中文
当客户端请求这部分数据时, 由客户端自己解码就好了
获取到字串后解码一次就可以正常显示为中文了:
1 str = [str stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];