JAVA基础-StringUtils

依赖

<!--        commons-->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.10</version>
</dependency>

举例

import org.apache.commons.lang3.StringUtils;
StringUtils.contains(abc, )   = true
StringUtils.contains(abc, a)  = true
StringUtils.contains(abc, A) = true
StringUtils.contains(abc, 'a') = true
StringUtils.contains(abc, 'z') = false
//检查字符序列(CharSequence)是否包含给定数组中的任何字符序列
//boolean containsAny(final CharSequence cs, final char... searchChars)
StringUtils.containsAny(zzabyycdxx, za) = true
StringUtils.containsAny(zzabyycdxx, by) = true
StringUtils.containsAny(abcd, ab, cd) = true
StringUtils.containsAny(abc, d, abc)  = true
StringUtils.containsAny(zzabyycdxx,'z','a') = true
StringUtils.containsAny(zzabyycdxx,'b','y') = true
StringUtils.containsAny(aba, 'z')           = false
//检查字符序列(CharSequence)是否只包含某些字符
//boolean containsOnly(final CharSequence cs, final char... valid)
StringUtils.containsOnly(ab, '')      = false
StringUtils.containsOnly(abab, 'abc') = true
StringUtils.containsOnly(ab1, 'abc')  = false
StringUtils.containsOnly(abz, 'abc')  = false
//检查字符序列(CharSequence)不包含某些字符 
//boolean containsNone(final CharSequence cs, final char... searchChars)
StringUtils.containsNone(ab,)       = true
StringUtils.containsNone(abab,xyz)  = true
StringUtils.containsNone(ab1, xyz)  = true
StringUtils.containsNone(abz, xyz)  = false
//检查字符序列是否以指定的前缀开始
StringUtils.startsWith(abcdef, null)  = false
StringUtils.startsWith(abcdef, abc) = true
StringUtils.startsWith(ABCDEF, abc) = false

// 判断集合中包含
String[] slist = {a, b, c, d, e, f, g};
boolean b = StringUtils.containsAny(g, slist);//true

String s1 = 123;
String s2 = 123;
//判断s1中是否包含s2
boolean contains = StringUtils.contains(s1, s2);