NSDATA转NSSTRING 去掉 <>和空格

-(NSString *)ConvertToNSString:(NSData *)data

{

    NSMutableString *strTemp = [NSMutableString stringWithCapacity:[data length]*2];

    const unsigned char *szBuffer = [data bytes];

    for (NSInteger i=0; i < [data length]; ++i) {

        [strTemp appendFormat:@"%02lx",(unsigned long)szBuffer[i]];

    }

    return strTemp;

}