StringUtil (YuanShuai-Commons 2.1 API)

java.lang.Object
- org.apache.commons.lang3.StringUtils
- - cn.sx.yys.commons.utils.string.StringUtil

public class StringUtil
extends org.apache.commons.lang3.StringUtils

字符串工具类

作者:: YuanShuai[apeblog@163.com]

字段概要
- 从类继承的字段 org.apache.commons.lang3.StringUtils
  CR, EMPTY, INDEX_NOT_FOUND, LF, SPACE

构造器概要

构造器
构造器和说明

StringUtil()

构造器
构造器和说明
`StringUtil()`

方法概要

所有方法静态方法具体方法
限定符和类型	方法和说明
`static String`	`arrayToStr(Object[] objs)` 将一个数组对象转换成一个字符串
`static <T> T`	`cast(Object obj)`
`static String`	`convertToCamelCase(String name)` 将下划线大写方式命名的字符串转换为驼峰式。
`static boolean`	`inStringIgnoreCase(String str, String... strs)` 是否包含字符串
`static boolean`	`isArray(Object object)` * 判断一个对象是否是数组类型（Java基本型别的数组）
`static boolean`	`isEmpty(Collection<?> coll)` * 判断一个Collection是否为空，包含List，Set，Queue
`static boolean`	`isEmpty(Map<?,?> map)` * 判断一个Map是否为空
`static boolean`	`isEmpty(Object[] objects)` 判断一个对象数组是否为空
`static boolean`	`isEmpty(String str)` * 判断一个字符串是否为空串
`static boolean`	`ishttp(String link)` 是否为http(s)://开头
`static boolean`	`isNotEmpty(Collection<?> coll)` * 判断一个Collection是否非空，包含List，Set，Queue
`static boolean`	`isNotEmpty(Map<?,?> map)` * 判断一个Map是否为空
`static boolean`	`isNotEmpty(Object[] objects)` * 判断一个对象数组是否非空
`static boolean`	`isNotEmpty(String str)` * 判断一个字符串是否为非空串
`static boolean`	`isNotNull(Object object)` * 判断一个对象是否非空
`static boolean`	`isNull(Object object)` * 判断一个对象是否为空
`static <T> T`	`nvl(T value, T defaultValue)` 获取参数不为空值
`static List<String>`	`str2List(String str, String sep, boolean filterBlank, boolean trim)` 字符串转list
`static Set<String>`	`str2Set(String str, String sep)` 字符串转set
`static String`	`substring(String str, int start)` 截取字符串
`static String`	`substring(String str, int start, int end)` 截取字符串
`static String`	`toCamelCase(String s)` 驼峰式命名法例如：user_name转换为userName
`static String`	`toUnderScoreCase(String str)` 驼峰转下划线命名
`static String`	`trim(String str)` 去空格

从类继承的方法 org.apache.commons.lang3.StringUtils
abbreviate, abbreviate, abbreviate, abbreviate, abbreviateMiddle, appendIfMissing, appendIfMissingIgnoreCase, capitalize, center, center, center, chomp, chomp, chop, compare, compare, compareIgnoreCase, compareIgnoreCase, contains, contains, containsAny, containsAny, containsAny, containsIgnoreCase, containsNone, containsNone, containsOnly, containsOnly, containsWhitespace, countMatches, countMatches, defaultIfBlank, defaultIfEmpty, defaultString, defaultString, deleteWhitespace, difference, endsWith, endsWithAny, endsWithIgnoreCase, equals, equalsAny, equalsAnyIgnoreCase, equalsIgnoreCase, firstNonBlank, firstNonEmpty, getCommonPrefix, getDigits, getFuzzyDistance, getJaroWinklerDistance, getLevenshteinDistance, getLevenshteinDistance, indexOf, indexOf, indexOf, indexOf, indexOfAny, indexOfAny, indexOfAny, indexOfAnyBut, indexOfAnyBut, indexOfDifference, indexOfDifference, indexOfIgnoreCase, indexOfIgnoreCase, isAllBlank, isAllEmpty, isAllLowerCase, isAllUpperCase, isAlpha, isAlphanumeric, isAlphanumericSpace, isAlphaSpace, isAnyBlank, isAnyEmpty, isAsciiPrintable, isBlank, isEmpty, isMixedCase, isNoneBlank, isNoneEmpty, isNotBlank, isNotEmpty, isNumeric, isNumericSpace, isWhitespace, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, join, joinWith, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOfAny, lastIndexOfIgnoreCase, lastIndexOfIgnoreCase, lastOrdinalIndexOf, left, leftPad, leftPad, leftPad, length, lowerCase, lowerCase, mid, normalizeSpace, ordinalIndexOf, overlay, prependIfMissing, prependIfMissingIgnoreCase, remove, remove, removeAll, removeEnd, removeEndIgnoreCase, removeFirst, removeIgnoreCase, removePattern, removeStart, removeStartIgnoreCase, repeat, repeat, repeat, replace, replace, replaceAll, replaceChars, replaceChars, replaceEach, replaceEachRepeatedly, replaceFirst, replaceIgnoreCase, replaceIgnoreCase, replaceOnce, replaceOnceIgnoreCase, replacePattern, reverse, reverseDelimited, right, rightPad, rightPad, rightPad, rotate, split, split, split, split, splitByCharacterType, splitByCharacterTypeCamelCase, splitByWholeSeparator, splitByWholeSeparator, splitByWholeSeparatorPreserveAllTokens, splitByWholeSeparatorPreserveAllTokens, splitPreserveAllTokens, splitPreserveAllTokens, splitPreserveAllTokens, splitPreserveAllTokens, startsWith, startsWithAny, startsWithIgnoreCase, strip, strip, stripAccents, stripAll, stripAll, stripEnd, stripStart, stripToEmpty, stripToNull, substringAfter, substringAfterLast, substringBefore, substringBeforeLast, substringBetween, substringBetween, substringsBetween, swapCase, toCodePoints, toEncodedString, toString, trimToEmpty, trimToNull, truncate, truncate, uncapitalize, unwrap, unwrap, upperCase, upperCase, valueOf, wrap, wrap, wrapIfMissing, wrapIfMissing

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - StringUtil
```
public StringUtil()
```
- 方法详细资料
  - nvl
```
public static <T> T nvl(T value,
                        T defaultValue)
```
    获取参数不为空值
    
    类型参数:
    
    T - 泛型
    
    参数:
    
    value - 要判断的value
    
    defaultValue - 默认的value
    
    返回:
    
    value 返回值
  - isEmpty
```
public static boolean isEmpty(Collection<?> coll)
```
    * 判断一个Collection是否为空，包含List，Set，Queue
    
    参数:
    
    coll - 要判断的Collection
    
    返回:
    
    true：为空 false：非空
  - isNotEmpty
```
public static boolean isNotEmpty(Collection<?> coll)
```
    * 判断一个Collection是否非空，包含List，Set，Queue
    
    参数:
    
    coll - 要判断的Collection
    
    返回:
    
    true：非空 false：空
  - isEmpty
```
public static boolean isEmpty(Object[] objects)
```
    判断一个对象数组是否为空
    
    参数:
    
    objects - 要判断的对象数组
    
    返回:
    
    true：为空 false：非空
  - isNotEmpty
```
public static boolean isNotEmpty(Object[] objects)
```
    * 判断一个对象数组是否非空
    
    参数:
    
    objects - 要判断的对象数组
    
    返回:
    
    true：非空 false：空
  - isEmpty
```
public static boolean isEmpty(Map<?,?> map)
```
    * 判断一个Map是否为空
    
    参数:
    
    map - 要判断的Map
    
    返回:
    
    true：为空 false：非空
  - isNotEmpty
```
public static boolean isNotEmpty(Map<?,?> map)
```
    * 判断一个Map是否为空
    
    参数:
    
    map - 要判断的Map
    
    返回:
    
    true：非空 false：空
  - isEmpty
```
public static boolean isEmpty(String str)
```
    * 判断一个字符串是否为空串
    
    参数:
    
    str - String
    
    返回:
    
    true：为空 false：非空
  - isNotEmpty
```
public static boolean isNotEmpty(String str)
```
    * 判断一个字符串是否为非空串
    
    参数:
    
    str - String
    
    返回:
    
    true：非空串 false：空串
  - isNull
```
public static boolean isNull(Object object)
```
    * 判断一个对象是否为空
    
    参数:
    
    object - Object
    
    返回:
    
    true：为空 false：非空
  - isNotNull
```
public static boolean isNotNull(Object object)
```
    * 判断一个对象是否非空
    
    参数:
    
    object - Object
    
    返回:
    
    true：非空 false：空
  - isArray
```
public static boolean isArray(Object object)
```
    * 判断一个对象是否是数组类型（Java基本型别的数组）
    
    参数:
    
    object - 对象
    
    返回:
    
    true：是数组 false：不是数组
  - trim
```
public static String trim(String str)
```
    去空格
    
    参数:
    
    str - 待处理字符串
    
    返回:
    
    处理后的字符串
  - substring
```
public static String substring(String str,
                               int start)
```
    截取字符串
    
    参数:
    
    str - 字符串
    
    start - 开始
    
    返回:
    
    结果
  - substring
```
public static String substring(String str,
                               int start,
                               int end)
```
    截取字符串
    
    参数:
    
    str - 字符串
    
    start - 开始
    
    end - 结束
    
    返回:
    
    结果
  - ishttp
```
public static boolean ishttp(String link)
```
    是否为http(s)://开头
    
    参数:
    
    link - 链接
    
    返回:
    
    结果
  - str2Set
```
public static final Set<String> str2Set(String str,
                                        String sep)
```
    字符串转set
    
    参数:
    
    str - 字符串
    
    sep - 分隔符
    
    返回:
    
    set集合
  - str2List
```
public static final List<String> str2List(String str,
                                          String sep,
                                          boolean filterBlank,
                                          boolean trim)
```
    字符串转list
    
    参数:
    
    str - 字符串
    
    sep - 分隔符
    
    filterBlank - 过滤纯空白
    
    trim - 去掉首尾空白
    
    返回:
    
    list集合
  - toUnderScoreCase
```
public static String toUnderScoreCase(String str)
```
    驼峰转下划线命名
    
    参数:
    
    str - 待处理字符串
    
    返回:
    
    处理后的字符串
  - inStringIgnoreCase
```
public static boolean inStringIgnoreCase(String str,
                                         String... strs)
```
    是否包含字符串
    
    参数:
    
    str - 验证字符串
    
    strs - 字符串组
    
    返回:
    
    包含返回true
  - convertToCamelCase
```
public static String convertToCamelCase(String name)
```
    将下划线大写方式命名的字符串转换为驼峰式。如果转换前的下划线大写方式命名的字符串为空，则返回空字符串。例如：HELLO_WORLD转换为HelloWorld
    
    参数:
    
    name - 转换前的下划线大写方式命名的字符串
    
    返回:
    
    转换后的驼峰式命名的字符串
  - toCamelCase
```
public static String toCamelCase(String s)
```
    驼峰式命名法例如：user_name转换为userName
    
    参数:
    
    s - 待处理的字符串
    
    返回:
    
    处理后的字符串
  - cast
```
public static <T> T cast(Object obj)
```
  - arrayToStr
```
public static String arrayToStr(Object[] objs)
```
    将一个数组对象转换成一个字符串
    
    参数:
    
    objs - 要转换的数组
    
    返回:
    
    转换后的字符串

类 StringUtil

字段概要

从类继承的字段 org.apache.commons.lang3.StringUtils

构造器概要

方法概要

从类继承的方法 org.apache.commons.lang3.StringUtils

从类继承的方法 java.lang.Object

构造器详细资料

StringUtil

方法详细资料

nvl

isEmpty

isNotEmpty

isEmpty

isNotEmpty

isEmpty

isNotEmpty

isEmpty

isNotEmpty

isNull

isNotNull

isArray

trim

substring

substring

ishttp

str2Set

str2List

toUnderScoreCase

inStringIgnoreCase

convertToCamelCase

toCamelCase

cast

arrayToStr