iOS UTF-8编码/解码 UrlEncode编码/解码

UTF-8编码/解码

编码
////>表达我今天的心情
    NSString *urlCode = @"https://www.baidu.com?a=n去你妈";
    
    NSString *hString = [urlCode stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
    
    NSString *str5 = [hString stringByRemovingPercentEncoding];
    
    NSLog(@"UTF-8编码:%@  解码：%@",hString,str5);
编码:  https://www.baidu.com?a=n%E5%8E%BB%E4%BD%A0%E5%A6%88  
解码：https://www.baidu.com?a=n去你妈

UrlEncode编码/解码

///> URLEncode
- (NSString *)URLEncodedString:(NSString*)urlStr {
    NSString *encodedString = (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)urlStr,NULL,(CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8));
    return encodedString;
}


///> URLDecode
-(NSString *)URLDecodedString:(NSString*)urlStr {
    NSString *decodedString  = (__bridge_transfer NSString *)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(NULL,(__bridge CFStringRef)urlStr,CFSTR(""),CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));
    return decodedString;
}

编码:https%3A%2F%2Fwww.baidu.com%3Fa%3Dn%E5%8E%BB%E4%BD%A0%E5%A6%88  
解码：https://www.baidu.com?a=n去你妈

///> 区别

UrlEncode编码/解码 会对 "!*'();:@&=+$,/?%#[] 进行编码

sname=ç²¾é��&pname=ç�´æ�­ä¸­å�½-å
¨é�¨ç�´æ�­+-+45？？


怎么出现的呢？
http://cbox.cntv.cn/special/cbox/liveChinaList/index.html?sname=精选&pname=直播中国-全部直播 - 45
UrlEncode编码
UTF-8解码
就回出现乱码