Objective-c NSString 转utf-8和gb2312

来源：互联网发布：淘宝日用杂货铺编辑：程序博客网时间：2024/06/05 17:49

转载自：http://www.cocoachina.com/bbs/read.php?tid=62897

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#pragma mark -  
#pragma mark Encode Chinese to ISO8859-1 in URL  
-(NSString*)EncodeUTF8Str:(NSString*)encodeStr{  
    CFStringRef nonAlphaNumValidChars = CFSTR("![        DISCUZ_CODE_1        ]’()*+,-./:;=?@_~");         
    NSString*preprocessedString = (NSString*)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, (CFStringRef)encodeStr, CFSTR(""), kCFStringEncodingUTF8);          
    NSString*newStr = [(NSString*)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)preprocessedString,NULL,nonAlphaNumValidChars,kCFStringEncodingUTF8) autorelease];  
    [preprocessedString release];  
    returnnewStr;          
} 
#pragma mark -  
#pragma mark Encode Chinese to GB2312 in URL  
-(NSString*)EncodeGB2312Str:(NSString*)encodeStr{  
    CFStringRef nonAlphaNumValidChars = CFSTR("![        DISCUZ_CODE_1        ]’()*+,-./:;=?@_~");         
    NSString*preprocessedString = (NSString*)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, (CFStringRef)encodeStr, CFSTR(""), kCFStringEncodingGB_18030_2000);          
    NSString*newStr = [(NSString*)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)preprocessedString,NULL,nonAlphaNumValidChars,kCFStringEncodingGB_18030_2000) autorelease];  
    [preprocessedString release];  
    returnnewStr;          
}

使用sudzc连接webService时出现了中文乱码问题，使用NSUTF8encoding 依然是乱码。
使用上面的EncodeUTF8Str方法转码，比如：苹果，转码后是 %E8%8B%B9%E6%9E%9C，这样服务器端解码就可以了。