Unicode转化为汉字

+ (NSString *)replaceUnicode:(NSString *)unicodeStr { 

NSString *tempStr1 = [unicodeStrstringByReplacingOccurrencesOfString:@"\u"withString:@"\U"]; 
NSString *tempStr2 = [tempStr1stringByReplacingOccurrencesOfString:@"""withString:@"\""]; 
NSString *tempStr3 = [[@"""stringByAppendingString:tempStr2]stringByAppendingString:@"""]; 
NSData *tempData = [tempStr3dataUsingEncoding:NSUTF8StringEncoding]; 
NSString* returnStr = [NSPropertyListSerializationpropertyListFromData:tempData 
mutabilityOption:NSPropertyListImmutable 
format:NULL 
errorDescription:NULL]; 

return [returnStrstringByReplacingOccurrencesOfString:@"\r\n"withString:@"
"]; 

}

NSString* strA = [@"%E4%B8%AD%E5%9B%BD"stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *strB = [@"中国"stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSString *strings = [NSStringstringWithFormat:@"abc"];

NSLog(@"strings : %@",strings);

CF_EXPORT
CFStringRef CFURLCreateStringByAddingPercentEscapes(CFAllocatorRef allocator,CFStringReforiginalString,CFStringRef charactersToLeaved, CFStringReflegalURLCharactersToBeEscaped,CFStringEncoding encoding);

NSString *encodedValue = (__bridge NSString*)CFURLCreateStringByAddingPercentEscapes(nil, (__bridgeCFStringRef)strings,nil, (CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8);

+ (NSString *)changeISO88591StringToUnicodeString:(NSString *)iso88591String
{

NSMutableString *srcString = [[[NSMutableString alloc]initWithString:iso88591String] autorelease];

[srcString replaceOccurrencesOfString:@"&" withString:@"&" options:NSLiteralSearch range:NSMakeRange(0, [srcString length])];
[srcString replaceOccurrencesOfString:@"&#x" withString:@"" options:NSLiteralSearch range:NSMakeRange(0, [srcString length])];

NSMutableString *desString = [[[NSMutableString alloc]init] autorelease];

NSArray *arr = [srcString componentsSeparatedByString:@";"];

for(int i=0;i<[arr count]-1;i++){

NSString *v = [arr objectAtIndex:i];
char *c = malloc(3);
int value = [StringUtil changeHexStringToDecimal:v];
c[1] = value &0x00FF;
c[0] = value >>8 &0x00FF;
c[2] = '