org.lasque.tusdk.core.utils

类 StringHelper

java.lang.Object

org.lasque.tusdk.core.utils.StringHelper

public class StringHelper
extends java.lang.Object

字符串帮助类

字段概要

字段

限定符和类型	字段和说明
static java.lang.String	EMPTY 空字符串

构造器概要

构造器

构造器和说明
StringHelper()

方法概要

限定符和类型	方法和说明
static java.lang.String	Base64Encode(java.lang.String str) 转为Base64
static java.lang.String	bytesToHexString(byte[] src) 二进制专为字符串
static java.lang.String	encryptMd5(java.lang.String str) MD5解密
static java.lang.String	formatByte(long size) 返回对应的总数
static boolean	isBlank(java.lang.String str) Checks if a String is whitespace, empty ("") or null.
static boolean	isEmpty(java.lang.String str) Checks if a String is empty ("") or null.
static boolean	isLetter(java.lang.String txt, int preLength) 是否为字母
static boolean	isNotBlank(java.lang.String str) Checks if a String is not empty (""), not null and not whitespace only.
static boolean	isNotEmpty(java.lang.String str) Checks if a String is not empty ("") and not null.
static int	matchInt(java.lang.String input, java.lang.String regex) 获取匹配正则整数
static java.lang.String	matchString(java.lang.String input, java.lang.String regex) 获取匹配正则字符串 String sms = "【完美故事】09828344(完美故事验证码)或点击 b.mgushi.com/s/09828344"; String code = StringHelper.matchString(sms, "[^0-9]*([0-9]{6})[^0-9]*"); L.i("code: %s", code);
static java.util.ArrayList<java.lang.String>	matchStrings(java.lang.String input, java.lang.String regex) 获取匹配正则字符串
static java.lang.String	md5(byte[] bytes) MD5
static java.lang.String	md5(java.lang.String s) MD5
static float	parseFloat(java.lang.String txt) 转换成小数
static int	parserInt(java.lang.String txt) 转换成整形
static int	parserInt(java.lang.String txt, int radix) 转换成整形
static long	parserLong(java.lang.String txt) 转换成长整数
static java.lang.String	removeSuffix(java.lang.String fileName) 删除文件后缀
static java.lang.String	timeStampString() 获取时间戳字符串
static java.lang.String	trim(java.lang.String str) Removes control characters (char <= 32) from both ends of this String, handling null by returning null.
static java.lang.String	trimToEmpty(java.lang.String str) Removes control characters (char <= 32) from both ends of this String returning an empty String ("") if the String is empty ("") after the trim or if it is null.
static java.lang.String	trimToNull(java.lang.String str) Removes control characters (char <= 32) from both ends of this String returning null if the String is empty ("") after the trim or if it is null.
static java.util.HashMap<java.lang.String,java.lang.String>	urlQuery(java.lang.String query) 分割链接参数
static java.lang.String	uuid() 获取唯一标识符

从类继承的方法 java.lang.Object

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

字段详细资料

EMPTY

public static final java.lang.String EMPTY

空字符串

另请参阅:

常量字段值

构造器详细资料

StringHelper

public StringHelper()

方法详细资料

isEmpty

public static boolean isEmpty(java.lang.String str)

Checks if a String is empty ("") or null.

 StringHelper.isEmpty(null)      = true
 StringHelper.isEmpty("")        = true
 StringHelper.isEmpty(" ")       = false
 StringHelper.isEmpty("bob")     = false
 StringHelper.isEmpty("  bob  ") = false
 

NOTE: This method changed in Lang version 2.0. It no longer trims the String. That functionality is available in isBlank().

参数:

str - the String to check, may be null

返回:

true if the String is empty or null

isNotEmpty

public static boolean isNotEmpty(java.lang.String str)

Checks if a String is not empty ("") and not null.

 StringHelper.isNotEmpty(null)      = false
 StringHelper.isNotEmpty("")        = false
 StringHelper.isNotEmpty(" ")       = true
 StringHelper.isNotEmpty("bob")     = true
 StringHelper.isNotEmpty("  bob  ") = true
 

参数:

str - the String to check, may be null

返回:

true if the String is not empty and not null

isBlank

public static boolean isBlank(java.lang.String str)

Checks if a String is whitespace, empty ("") or null.

 StringHelper.isBlank(null)      = true
 StringHelper.isBlank("")        = true
 StringHelper.isBlank(" ")       = true
 StringHelper.isBlank("bob")     = false
 StringHelper.isBlank("  bob  ") = false
 

参数:

str - the String to check, may be null

返回:

true if the String is null, empty or whitespace

从以下版本开始:

2.0

isNotBlank

public static boolean isNotBlank(java.lang.String str)

Checks if a String is not empty (""), not null and not whitespace only.

 StringHelper.isNotBlank(null)      = false
 StringHelper.isNotBlank("")        = false
 StringHelper.isNotBlank(" ")       = false
 StringHelper.isNotBlank("bob")     = true
 StringHelper.isNotBlank("  bob  ") = true
 

参数:

str - the String to check, may be null

返回:

true if the String is not empty and not null and not whitespace

从以下版本开始:

2.0

trim

public static java.lang.String trim(java.lang.String str)

Removes control characters (char <= 32) from both ends of this String, handling null by returning null.

The String is trimmed using String.trim(). Trim removes start and end characters <= 32. To strip whitespace use #strip(String).

To trim your choice of characters, use the #strip(String, String) methods.

 StringHelper.trim(null)          = null
 StringHelper.trim("")            = ""
 StringHelper.trim("     ")       = ""
 StringHelper.trim("abc")         = "abc"
 StringHelper.trim("    abc    ") = "abc"
 

参数:

str - the String to be trimmed, may be null

返回:

the trimmed string, null if null String input

trimToNull

public static java.lang.String trimToNull(java.lang.String str)

Removes control characters (char <= 32) from both ends of this String returning null if the String is empty ("") after the trim or if it is null.

The String is trimmed using String.trim(). Trim removes start and end characters <= 32. To strip whitespace use #stripToNull(String).

 StringHelper.trimToNull(null)          = null
 StringHelper.trimToNull("")            = null
 StringHelper.trimToNull("     ")       = null
 StringHelper.trimToNull("abc")         = "abc"
 StringHelper.trimToNull("    abc    ") = "abc"
 

参数:

str - the String to be trimmed, may be null

返回:

the trimmed String, null if only chars <= 32, empty or null String input

从以下版本开始:

2.0

trimToEmpty

public static java.lang.String trimToEmpty(java.lang.String str)

Removes control characters (char <= 32) from both ends of this String returning an empty String ("") if the String is empty ("") after the trim or if it is null.

The String is trimmed using String.trim(). Trim removes start and end characters <= 32. To strip whitespace use #stripToEmpty(String).

 StringHelper.trimToEmpty(null)          = ""
 StringHelper.trimToEmpty("")            = ""
 StringHelper.trimToEmpty("     ")       = ""
 StringHelper.trimToEmpty("abc")         = "abc"
 StringHelper.trimToEmpty("    abc    ") = "abc"
 

参数:

str - the String to be trimmed, may be null

返回:

the trimmed String, or an empty String if null input

从以下版本开始:

2.0

md5

public static java.lang.String md5(java.lang.String s)

MD5

参数:

s -

返回:

md5

public static java.lang.String md5(byte[] bytes)

MD5

参数:

bytes -

返回:

encryptMd5

public static java.lang.String encryptMd5(java.lang.String str)

MD5解密

参数:

str -

返回:

Base64Encode

public static java.lang.String Base64Encode(java.lang.String str)

转为Base64

参数:

str -

返回:

uuid

public static java.lang.String uuid()

获取唯一标识符

返回:

urlQuery

public static java.util.HashMap<java.lang.String,java.lang.String> urlQuery(java.lang.String query)

分割链接参数

参数:

query -

返回:

timeStampString

public static java.lang.String timeStampString()

获取时间戳字符串

返回:

formatByte

public static java.lang.String formatByte(long size)

返回对应的总数

参数:

size -

返回:

isLetter

public static boolean isLetter(java.lang.String txt,
                               int preLength)

是否为字母

参数:

txt - 输入字符串

preLength - 字符串前面是否为字母 设置为0将查询整个字符串

返回:

parserInt

public static int parserInt(java.lang.String txt)

转换成整形

参数:

txt -

返回:

parserInt

public static int parserInt(java.lang.String txt,
                            int radix)

转换成整形

参数:

txt - (FF)

radix - 进制

返回:

parseFloat

public static float parseFloat(java.lang.String txt)

转换成小数

参数:

txt - 输入字符串

返回:

小数

parserLong

public static long parserLong(java.lang.String txt)

转换成长整数

参数:

txt - 输入字符串

返回:

长整数

bytesToHexString

public static java.lang.String bytesToHexString(byte[] src)

二进制专为字符串

参数:

src -

返回:

matchInt

public static int matchInt(java.lang.String input,
                           java.lang.String regex)

获取匹配正则整数

参数:

input -

regex -

返回:

matchString

public static java.lang.String matchString(java.lang.String input,
                                           java.lang.String regex)

获取匹配正则字符串 String sms = "【完美故事】09828344(完美故事验证码)或点击 b.mgushi.com/s/09828344"; String code = StringHelper.matchString(sms, "[^0-9]*([0-9]{6})[^0-9]*"); L.i("code: %s", code);

参数:

input -

regex -

返回:

matchStrings

public static java.util.ArrayList<java.lang.String> matchStrings(java.lang.String input,
                                                                 java.lang.String regex)

获取匹配正则字符串

参数:

input -

regex -

返回:

removeSuffix

public static java.lang.String removeSuffix(java.lang.String fileName)

删除文件后缀

参数:

fileName -

返回: