NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding (kCFStringEncodingGB_18030_2000);
str = [currentURL stringByReplacingPercentEscapesUsingEncoding:enc];
currentURL為要解碼的字符串,其中stringByReplacingPercentEscapesUsingEncoding這個(gè)方法已經(jīng)被廢棄了,目前我還沒(méi)有找到更好的方法,如果有,煩請(qǐng)告知