org.openingo.jdkits.lang

Class StrKit

java.lang.Object

org.openingo.jdkits.lang.StrKit

All Implemented Interfaces:

StringPoolKit

public final class StrKit
extends Object
implements StringPoolKit

字符串工具 StrKit

Author:

Qicz

Field Summary

Fields inherited from interface org.openingo.jdkits.lang.StringPoolKit

AMPERSAND, AND, ASTERISK, AT, BACK_SLASH, BACKTICK, BYTES_NEW_LINE, COLON, COMMA, CRLF, DASH, DOLLAR, DOLLAR_LEFT_BRACE, DOT, DOT_CLASS, DOT_JAVA, DOT_NEWLINE, DOT_XML, DOTDOT, EMPTY, EMPTY_ARRAY, EQUALS, EXCLAMATION_MARK, FALSE, HASH, HASH_LEFT_BRACE, HAT, HTML_AMP, HTML_GT, HTML_LT, HTML_NBSP, HTML_QUOTE, ISO_8859_1, LEFT_BRACE, LEFT_BRACKET, LEFT_CHEV, LEFT_SQ_BRACKET, N, NEWLINE, NO, NULL, OFF, ON, ONE, PERCENT, PIPE, PLUS, QUESTION_MARK, QUOTE, RETURN, RIGHT_BRACE, RIGHT_BRACKET, RIGHT_CHEV, RIGHT_SQ_BRACKET, SEMICOLON, SINGLE_QUOTE, SLASH, SPACE, STAR, TAB, TILDA, TRUE, UNDERSCORE, US_ASCII, UTF_8, Y, YES, ZERO

Method Summary

Modifier and Type	Method and Description
static int[]	convertCharToInt(char[] c) 将字符数组转为整型数组
static String	defaultIfBlank(String str, String defaultValue)
static boolean	equals(CharSequence cs1, CharSequence cs2) Compares two CharSequences, returning true if they represent equal sequences of characters.
static boolean	equals(String a, String b)
static boolean	equalsAny(CharSequence string, CharSequence... searchStrings) Compares given string to a CharSequences vararg of searchStrings, returning true if the string is equal to any of the searchStrings.
static List<String>	filterBlank(Collection<String> strings)
static Set<String>	filterBlank(Set<String> strings)
static String	filterChinese(String string) 过滤掉中文
static String	firstCharToLowerCase(String str) 首字母变小写
static String	firstCharToUpperCase(String str) 首字母变大写
static String	getRandomUUID()
static boolean	hasIllegalChar(String string) 验证字符串内容是否包含下列非法字符 `~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆
static boolean	isBlank(CharSequence str) 字符串为 null 或者内部字符全部为 ' ' '\t' '\n' '\r' 这四类字符时返回 true
static boolean	isChinese(char c) 判定输入的是否是汉字
static boolean	isChinese(String string) 校验String是否全是中文
static boolean	isChineseChar(char c) 校验一个字符是否是汉字
static boolean	isContainChinese(String str) 判断字符串中是否包含中文 不能校验是否为中文标点符号
static boolean	isEmpty(CharSequence str)
static boolean	isIllegalChar(char c) 验证字符内容是否包含下列非法字符 `~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆
static boolean	isNotEmpty(CharSequence str)
static boolean	isWord(char c) 校验某个字符是否是a-z、A-Z、_、0-9
static String	join(CharSequence[] stringArray)
static String	join(CharSequence[] stringArray, CharSequence separator)
static String	join(Collection<CharSequence> collection, CharSequence separator)
static boolean	notBlank(CharSequence... strings)
static boolean	notBlank(CharSequence str)
static boolean	slowEquals(String a, String b)
static String	str(byte[] data, Charset charset) 解码字节码
static String	str(Byte[] data, Charset charset) 解码字节码
static String	str(byte[] bytes, String charset) 将byte数组转为字符串
static String	str(Byte[] bytes, String charset) 将Byte数组转为字符串
static String	str(ByteBuffer data, Charset charset) 将编码的byteBuffer数据转换为字符串
static String	str(ByteBuffer data, String charset) 将编码的byteBuffer数据转换为字符串
static String	str(Object obj, Charset charset) 将对象转为字符串
static String	str(Object obj, String charsetName) 将对象转为字符串
static String	toCamelCase(String stringWithUnderline)
static Double	toDouble(String obj)
static Float	toFloat(String obj)
static Integer	toInteger(String obj)
static Long	toLong(String obj)
static String	utf8Str(Object obj) 将对象转为字符串

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

firstCharToLowerCase

public static String firstCharToLowerCase(String str)

首字母变小写

firstCharToUpperCase

public static String firstCharToUpperCase(String str)

首字母变大写

isBlank

public static boolean isBlank(CharSequence str)

字符串为 null 或者内部字符全部为 ' ' '\t' '\n' '\r' 这四类字符时返回 true

notBlank

public static boolean notBlank(CharSequence str)

notBlank

public static boolean notBlank(CharSequence... strings)

isEmpty

public static boolean isEmpty(CharSequence str)

isNotEmpty

public static boolean isNotEmpty(CharSequence str)

defaultIfBlank

public static String defaultIfBlank(String str,
                                    String defaultValue)

toCamelCase

public static String toCamelCase(String stringWithUnderline)

join

public static String join(CharSequence[] stringArray)

join

public static String join(CharSequence[] stringArray,
                          CharSequence separator)

join

public static String join(Collection<CharSequence> collection,
                          CharSequence separator)

slowEquals

public static boolean slowEquals(String a,
                                 String b)

equals

public static boolean equals(String a,
                             String b)

getRandomUUID

public static String getRandomUUID()

toInteger

public static Integer toInteger(String obj)

toLong

public static Long toLong(String obj)

toDouble

public static Double toDouble(String obj)

toFloat

public static Float toFloat(String obj)

equalsAny

public static boolean equalsAny(CharSequence string,
                                CharSequence... searchStrings)

Compares given string to a CharSequences vararg of searchStrings, returning true if the string is equal to any of the searchStrings.

 StringUtils.equalsAny(null, (CharSequence[]) null) = false
 StringUtils.equalsAny(null, null, null)    = true
 StringUtils.equalsAny(null, "abc", "def")  = false
 StringUtils.equalsAny("abc", null, "def")  = false
 StringUtils.equalsAny("abc", "abc", "def") = true
 StringUtils.equalsAny("abc", "ABC", "DEF") = false
 

Parameters:

string - to compare, may be null.

searchStrings - a vararg of strings, may be null.

Returns:

true if the string is equal (case-sensitive) to any other element of searchStrings; false if searchStrings is null or contains no matches.

Since:

3.5

equals

public static boolean equals(CharSequence cs1,
                             CharSequence cs2)

Compares two CharSequences, returning true if they represent equal sequences of characters.

nulls are handled without exceptions. Two null references are considered to be equal. The comparison is case sensitive.

 StringUtils.equals(null, null)   = true
 StringUtils.equals(null, "abc")  = false
 StringUtils.equals("abc", null)  = false
 StringUtils.equals("abc", "abc") = true
 StringUtils.equals("abc", "ABC") = false
 

Parameters:

cs1 - the first CharSequence, may be null

cs2 - the second CharSequence, may be null

Returns:

true if the CharSequences are equal (case-sensitive), or both null

Since:

3.0 Changed signature from equals(String, String) to equals(CharSequence, CharSequence)

See Also:

Object.equals(Object)

convertCharToInt

public static int[] convertCharToInt(char[] c)
                              throws NumberFormatException

将字符数组转为整型数组

Parameters:

c -

Throws:

NumberFormatException

isContainChinese

public static boolean isContainChinese(String str)

判断字符串中是否包含中文 不能校验是否为中文标点符号

Parameters:

str - 待校验字符串

Returns:

是否为中文

filterChinese

public static String filterChinese(String string)

过滤掉中文

Parameters:

string - 待过滤中文的字符串

Returns:

过滤掉中文后字符串

isChineseChar

public static boolean isChineseChar(char c)

校验一个字符是否是汉字

Parameters:

c - 被校验的字符

Returns:

true代表是汉字

hasIllegalChar

public static boolean hasIllegalChar(String string)

验证字符串内容是否包含下列非法字符
`~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆

Parameters:

string - 字符串内容

Returns:

true包含，false不包含

isIllegalChar

public static boolean isIllegalChar(char c)

验证字符内容是否包含下列非法字符
`~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆

Parameters:

c - 字符

Returns:

true包含，false不包含

isWord

public static boolean isWord(char c)

校验某个字符是否是a-z、A-Z、_、0-9

Parameters:

c - 被校验的字符

Returns:

true代表符合条件

isChinese

public static boolean isChinese(char c)

判定输入的是否是汉字

Parameters:

c - 被校验的字符

Returns:

true代表是汉字

isChinese

public static boolean isChinese(String string)

校验String是否全是中文

Parameters:

string - 被校验的字符串

Returns:

true代表全是汉字

filterBlank

public static List<String> filterBlank(Collection<String> strings)

filterBlank

public static Set<String> filterBlank(Set<String> strings)

utf8Str

public static String utf8Str(Object obj)

将对象转为字符串

 1、Byte数组和ByteBuffer会被转换为对应字符串的数组
 2、对象数组会调用Arrays.toString方法
 

Parameters:

obj - 对象

Returns:

字符串

str

public static String str(Object obj,
                         String charsetName)

将对象转为字符串

 1、Byte数组和ByteBuffer会被转换为对应字符串的数组
 2、对象数组会调用Arrays.toString方法
 

Parameters:

obj - 对象

charsetName - 字符集

Returns:

字符串

str

public static String str(Object obj,
                         Charset charset)

将对象转为字符串

         1、Byte数组和ByteBuffer会被转换为对应字符串的数组
         2、对象数组会调用Arrays.toString方法
 

Parameters:

obj - 对象

charset - 字符集

Returns:

字符串

str

public static String str(byte[] bytes,
                         String charset)

将byte数组转为字符串

Parameters:

bytes - byte数组

charset - 字符集

Returns:

字符串

str

public static String str(byte[] data,
                         Charset charset)

解码字节码

Parameters:

data - 字符串

charset - 字符集，如果此字段为空，则解码的结果取决于平台

Returns:

解码后的字符串

str

public static String str(Byte[] bytes,
                         String charset)

将Byte数组转为字符串

Parameters:

bytes - byte数组

charset - 字符集

Returns:

字符串

str

public static String str(Byte[] data,
                         Charset charset)

解码字节码

Parameters:

data - 字符串

charset - 字符集，如果此字段为空，则解码的结果取决于平台

Returns:

解码后的字符串

str

public static String str(ByteBuffer data,
                         String charset)

将编码的byteBuffer数据转换为字符串

Parameters:

data - 数据

charset - 字符集，如果为空使用当前系统字符集

Returns:

字符串

str

public static String str(ByteBuffer data,
                         Charset charset)

将编码的byteBuffer数据转换为字符串

Parameters:

data - 数据

charset - 字符集，如果为空使用当前系统字符集

Returns:

字符串