NSString编码转换

常有编码方式有很多种,现在列出之间的转换方式

NSString To UFT-8

[cpp]
NSString *str2 =@"深";
const char * s = [str2 UTF8String];
出现类似这样格式的字段"\\U6df1\\U5733\\U56fd\\U5f00\\U884c01\\U673a\\U623",通常为Unicode码,转换测试函数为

[cpp]
- (NSString *)replaceUnicode:(NSString *)unicodeStr {
    NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\\u" withString:@"\\U"];
    NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];
    NSString *tempStr3 = [[@"\"" stringByAppendingString:tempStr2] stringByAppendingString:@"\""];
    NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding];
    NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData
                                                           mutabilityOption:NSPropertyListImmutable
                                                                     format:NULL
                                                           errorDescription:NULL];

    return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n" withString:@"\n"];
}
    出现类似这样格式的字段"深圳银行",通常为GBK码,转换方式为
[cpp]
NSURL *url = [NSURL URLWithString:str2];
    NSData *responseData = [NSData dataWithContentsOfURL:url];
    NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:enc];

补充：软件开发 , C++ ,