（转载）http://codingstandards.iteye.com/blog/1187353
Bash字符串处理（与Java对照） - 17.判断是否以另外的字符串结尾
In Java
String.endsWith
oolean endsWith(String suffix)
测试此字符串是否以指定的后缀结束。
StringUtils.endsWith & StringUtils.endsWithIgnoreCase & StringUtils.endsWithAny
Check if a String ends with a specified suffix.
nulls are handled without exceptions. Two null references are considered to be equal. The comparison is case sensitive.
StringUtils.endsWith(null,null) = true
StringUtils.endsWith(null,"def") = false
StringUtils.endsWith("abcdef",null) = false
StringUtils.endsWith("abcdef","def") = true
StringUtils.endsWith("ABCDEF","def") = false
StringUtils.endsWith("ABCDEF","cde") = false
Parameters:
str - the String to check,may be null
suffix - the suffix to find,may be null
Returns:
true if the String ends with the suffix,case sensitive,or both null
Case insensitive check if a String ends with a specified suffix.
nulls are handled without exceptions. Two null references are considered to be equal. The comparison is case insensitive.
StringUtils.endsWithIgnoreCase(null,null) = true
StringUtils.endsWithIgnoreCase(null,"def") = false
StringUtils.endsWithIgnoreCase("abcdef",null) = false
StringUtils.endsWithIgnoreCase("abcdef","def") = true
StringUtils.endsWithIgnoreCase("ABCDEF",case insensitive,sans-serif; font-size:14px"> org.apache.commons.lang.StringUtils endsWithAny方法 写道
Check if a String ends with any of an array of specified strings.
StringUtils.endsWithAny(null,null) = false
StringUtils.endsWithAny(null,new String[] {"abc"}) = false
StringUtils.endsWithAny("abcxyz",null) = false
StringUtils.endsWithAny("abcxyz",new String[] {""}) = true
StringUtils.endsWithAny("abcxyz",new String[] {"xyz"}) = true
StringUtils.endsWithAny("abcxyz",new String[] {null,"xyz","abc"}) = true
Parameters:
string - the String to check,may be null
searchStrings - the Strings to find,may be null or empty
Returns:
true if the String ends with any of the the prefixes,or both null
In Bash
使用[[ ]] 模式匹配来判断是否以别的字符串结尾（推荐方式）
格式：[[ $STR == *$SUFFIX ]]
[root@web ~]#STR=hello.gif
[root@web ~]#SUFFIX=.gif
[root@web ~]#[[ $STR == *$SUFFIX ]] && echo "ends"
ends
[root@web ~]#
使用[[ ]] 正则表达式匹配来判断是否以别的字符串结尾
格式：[[ $STR =~ $SUFFIX$ ]]
在正则表达式中，$匹配结尾。
[[ $STR =~ $SUFFIX$ ]] && echo "ends"
ends
[root@web ~]#
例外：在上面的例子中，SUFFIX中包含点(.)，而点(.)在正则表达式中能够匹配任意字符，如下所示：
STR=helloxgif 正确：case "$STR" in *"$SUFFIX") echo "ends"; esac 错误：case "$STR" in "*$SUFFIX") echo "ends"; esac 注意*不能写在双引号里面，否则不灵。 case "$STR" in *"$SUFFIX") echo "ends"; esac
[root@web ~]# 用case语句来判断是否以别的字符串结尾
ends
[root@web ~]#case "$STR" in "*$SUFFIX") echo "ends"; esac
[root@web ~]#
用去尾法判断是否以别的字符串结尾
格式：[ "${STR%$SUFFIX}" != "$STR" ]
[ "${STR%$SUFFIX}" != "$STR" ] && echo "ends"
ends
[root@web ~]#
本文链接：http://codingstandards.iteye.com/blog/1187353 （转载请注明出处）
返回目录：Java程序员的Bash实用指南系列之字符串处理（目录）
