IOS简单的字串替换方法stringByTrimmingCharactersInSet

此方法只能过滤掉首尾,但是条件是集合

今天听人介绍了一个比较简单的过滤方法...不多说了,直接上代码

NSString *str = @"一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入";
NSMutableCharacterSet *set = [[NSMutableCharacterSet alloc] init];
[set formUnionWithCharacterSet:[NSCharacterSet lowercaseLetterCharacterSet]];//小写字母
NSLog(@"1 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet uppercaseLetterCharacterSet]];//大写字母
NSLog(@"2 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet symbolCharacterSet]];//符号
NSLog(@"3 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet punctuationCharacterSet]];//标点
NSLog(@"4 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet controlCharacterSet]];//控制符
NSLog(@"5 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet decimalDigitCharacterSet]];//小数
NSLog(@"6 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet letterCharacterSet]];//文字
NSLog(@"7 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet nonBaseCharacterSet]];//非基础
NSLog(@"8 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet alphanumericCharacterSet]];//字母数字
NSLog(@"9 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet decomposableCharacterSet]];//可分解
NSLog(@"10 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet illegalCharacterSet]];//非法
NSLog(@"11 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet capitalizedLetterCharacterSet]];//大写
NSLog(@"12 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet newlineCharacterSet]];//换行符
NSLog(@"13 %@",[str stringByTrimmingCharactersInSet:set]);
[set formUnionWithCharacterSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];//空格换行
NSLog(@"14 %@",[str stringByTrimmingCharactersInSet:set]);

2012-07-26 19:11:01.863 yingkong1987[12876:fb03] 1 一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
2012-07-26 19:11:01.864 yingkong1987[12876:fb03] 2 一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
2012-07-26 19:11:01.864 yingkong1987[12876:fb03] 3 一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
2012-07-26 19:11:01.864 yingkong1987[12876:fb03] 4 一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
2012-07-26 19:11:01.865 yingkong1987[12876:fb03] 5 一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
2012-07-26 19:11:01.865 yingkong1987[12876:fb03] 6 一个 (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn 汉0932字#@!中..文//>?输~~~@#$#@%#^#^%&^*&(*)入
2012-07-26 19:11:01.865 yingkong1987[12876:fb03] 7  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:01.865 yingkong1987[12876:fb03] 8  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:01.865 yingkong1987[12876:fb03] 9  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:01.866 yingkong1987[12876:fb03] 10  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:02.170 yingkong1987[12876:fb03] 11  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:02.170 yingkong1987[12876:fb03] 12  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:02.170 yingkong1987[12876:fb03] 13  (ABC) #@!#^#G@#Dd21e12d!E@!212s012yhsn
2012-07-26 19:11:02.170 yingkong1987[12876:fb03] 14

发现这个方法有一个很大的缺点..比如要去掉(ABC)的英文部分..必须要先去掉外面的括号....不然无法过滤...

空格亦是如此

如果有更好的过滤方法,欢迎留言讨论