stringByAppendingString和stringBy

stringByAppendingPathComponent 是路径拼接会多出“/”

stringByAppendingString 是字符串拼接无“/”

    NSString *imagePath1 = [@"str1" stringByAppendingString:@"str2"];

    NSString *imagePath2 = [@"str1" stringByAppendingPathComponent:@"str2"];

    NSLog(@"imagePath1:%@    imagePath2:%@",imagePath1,imagePath2);

    输出结果：imagePath1:str1str2         imagePath2:str1/str2