net.dreamlu.mica.core.utils

Class NumberUtil

java.lang.Object

org.springframework.util.NumberUtils

net.dreamlu.mica.core.utils.NumberUtil

public class NumberUtil
extends org.springframework.util.NumberUtils

数字类型工具类

Author:

L.cm

Field Summary

Fields inherited from class org.springframework.util.NumberUtils

STANDARD_NUMBER_TYPES

Constructor Summary

Constructors

Constructor and Description
NumberUtil()

Method Summary

Modifier and Type	Method and Description
static long	form62Str(String s) 将 62 进制字符串转为数字
static String	to62Str(long i) 将 long 转短字符串 为 62 进制
static int	toInt(String str) Convert a String to an int, returning zero if the conversion fails.
static int	toInt(String str, int defaultValue) Convert a String to an int, returning a default value if the conversion fails.
static long	toLong(String str) Convert a String to a long, returning zero if the conversion fails.
static long	toLong(String str, long defaultValue) Convert a String to a long, returning a default value if the conversion fails.

Methods inherited from class org.springframework.util.NumberUtils

convertNumberToTargetClass, parseNumber, parseNumber

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberUtil

public NumberUtil()

Method Detail

toInt

public static int toInt(String str)

Convert a String to an int, returning zero if the conversion fails.

If the string is null, zero is returned.

   NumberUtil.toInt(null) = 0
   NumberUtil.toInt("")   = 0
   NumberUtil.toInt("1")  = 1
 

Parameters:

str - the string to convert, may be null

Returns:

the int represented by the string, or zero if conversion fails

toInt

public static int toInt(@Nullable
                        String str,
                        int defaultValue)

Convert a String to an int, returning a default value if the conversion fails.

If the string is null, the default value is returned.

   NumberUtil.toInt(null, 1) = 1
   NumberUtil.toInt("", 1)   = 1
   NumberUtil.toInt("1", 0)  = 1
 

Parameters:

str - the string to convert, may be null

defaultValue - the default value

Returns:

the int represented by the string, or the default if conversion fails

toLong

public static long toLong(String str)

Convert a String to a long, returning zero if the conversion fails.

If the string is null, zero is returned.

   NumberUtil.toLong(null) = 0L
   NumberUtil.toLong("")   = 0L
   NumberUtil.toLong("1")  = 1L
 

Parameters:

str - the string to convert, may be null

Returns:

the long represented by the string, or 0 if conversion fails

toLong

public static long toLong(@Nullable
                          String str,
                          long defaultValue)

Convert a String to a long, returning a default value if the conversion fails.

If the string is null, the default value is returned.

   NumberUtil.toLong(null, 1L) = 1L
   NumberUtil.toLong("", 1L)   = 1L
   NumberUtil.toLong("1", 0L)  = 1L
 

Parameters:

str - the string to convert, may be null

defaultValue - the default value

Returns:

the long represented by the string, or the default if conversion fails

to62Str

public static String to62Str(long i)

将 long 转短字符串 为 62 进制

Parameters:

i - 数字

Returns:

短字符串

form62Str

public static long form62Str(String s)

将 62 进制字符串转为数字

Parameters:

s - 字符串

Returns:

数字