com.sdgd.auth.api.utils

类 StringUtils

java.lang.Object

com.sdgd.auth.api.utils.StringUtils

public abstract class StringUtils
extends java.lang.Object

字符串工具类。

从以下版本开始:

1.0, Sep 12, 2009

作者:

carver.gu

方法概要

限定符和类型	方法和说明
static boolean	areNotEmpty(java.lang.String... values) 检查指定的字符串列表是否不为空。
static java.util.Map<java.lang.String,java.lang.String>	convert2Map(java.lang.String str, java.lang.String delim)
static boolean	hasLength(java.lang.CharSequence str) Check that the given CharSequence is neither null nor of length 0.
static boolean	hasText(java.lang.String str) Check whether the given String contains actual text.
static boolean	isEmpty(java.lang.String value) 检查指定的字符串是否为空。
static boolean	isNumeric(java.lang.Object obj) 检查对象是否为数字型字符串,包含负数开头的。
static java.lang.String	leftPad(java.lang.String str, int size, char padChar)
static java.lang.String	leftPad(java.lang.String str, int size, java.lang.String padStr)
static java.lang.String	stripNonValidXMLCharacters(java.lang.String input) 过滤不可见字符
static java.lang.String	trimAllWhitespace(java.lang.String str) Trim all whitespace from the given String: leading, trailing, and in between characters.
static java.lang.String	unicodeToChinese(java.lang.String unicode) 把通用字符编码的字符串转化为汉字编码。

从类继承的方法 java.lang.Object

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

方法详细资料

isEmpty

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

检查指定的字符串是否为空。

• SysUtils.isEmpty(null) = true
• SysUtils.isEmpty("") = true
• SysUtils.isEmpty(" ") = true
• SysUtils.isEmpty("abc") = false

参数:

value - 待检查的字符串

返回:

true/false

isNumeric

public static boolean isNumeric(java.lang.Object obj)

检查对象是否为数字型字符串,包含负数开头的。

areNotEmpty

public static boolean areNotEmpty(java.lang.String... values)

检查指定的字符串列表是否不为空。

trimAllWhitespace

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

Trim all whitespace from the given String: leading, trailing, and in between characters.

参数:

str - the String to check

返回:

the trimmed String

另请参阅:

Character.isWhitespace(char)

unicodeToChinese

public static java.lang.String unicodeToChinese(java.lang.String unicode)

把通用字符编码的字符串转化为汉字编码。

stripNonValidXMLCharacters

public static java.lang.String stripNonValidXMLCharacters(java.lang.String input)

过滤不可见字符

leftPad

public static java.lang.String leftPad(java.lang.String str,
                                       int size,
                                       char padChar)

leftPad

public static java.lang.String leftPad(java.lang.String str,
                                       int size,
                                       java.lang.String padStr)

hasLength

public static boolean hasLength(java.lang.CharSequence str)

Check that the given CharSequence is neither null nor of length 0.

Note: this method returns true for a CharSequence that purely consists of whitespace.

 StringUtils.hasLength(null) = false
 StringUtils.hasLength("") = false
 StringUtils.hasLength(" ") = true
 StringUtils.hasLength("Hello") = true
 

参数:

str - the CharSequence to check (may be null)

返回:

true if the CharSequence is not null and has length

hasText

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

Check whether the given String contains actual text.

More specifically, this method returns true if the String is not null, its length is greater than 0, and it contains at least one non-whitespace character.

参数:

str - the String to check (may be null)

返回:

true if the String is not null, its length is greater than 0, and it does not contain whitespace only

另请参阅:

Character.isWhitespace(char)

convert2Map

public static java.util.Map<java.lang.String,java.lang.String> convert2Map(java.lang.String str,
                                                                           java.lang.String delim)