me.chanjar.weixin.common.util

类 StringUtils

java.lang.Object

me.chanjar.weixin.common.util.StringUtils

public class StringUtils
extends Object

copy from apache-commons-lang3

构造器概要

构造器

构造器和说明
StringUtils()

方法概要

方法

限定符和类型	方法和说明
static boolean	isBlank(CharSequence cs) Checks if a CharSequence is whitespace, empty ("") or null.
static boolean	isEmpty(CharSequence cs) Checks if a CharSequence is empty ("") or null.
static boolean	isNotBlank(CharSequence cs) Checks if a CharSequence is not empty (""), not null and not whitespace only.
static boolean	isNotEmpty(CharSequence cs) Checks if a CharSequence is not empty ("") and not null.

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

StringUtils

public StringUtils()

方法详细资料

isBlank

public static boolean isBlank(CharSequence cs)

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

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

参数:

cs - the CharSequence to check, may be null

返回:

true if the CharSequence is null, empty or whitespace

从以下版本开始:

2.0, 3.0 Changed signature from isBlank(String) to isBlank(CharSequence)

isNotBlank

public static boolean isNotBlank(CharSequence cs)

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

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

参数:

cs - the CharSequence to check, may be null

返回:

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

从以下版本开始:

2.0, 3.0 Changed signature from isNotBlank(String) to isNotBlank(CharSequence)

isEmpty

public static boolean isEmpty(CharSequence cs)

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

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

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

参数:

cs - the CharSequence to check, may be null

返回:

true if the CharSequence is empty or null

从以下版本开始:

3.0 Changed signature from isEmpty(String) to isEmpty(CharSequence)

isNotEmpty

public static boolean isNotEmpty(CharSequence cs)

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

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

参数:

cs - the CharSequence to check, may be null

返回:

true if the CharSequence is not empty and not null

从以下版本开始:

3.0 Changed signature from isNotEmpty(String) to isNotEmpty(CharSequence)