com.alibaba.rocketmq.common

类 UtilAll

java.lang.Object

com.alibaba.rocketmq.common.UtilAll

public class UtilAll
extends Object

各种方法大杂烩

作者:

shijia.wxr

字段概要

字段

限定符和类型	字段和说明
static String	yyyy_MM_dd_HH_mm_ss
static String	yyyy_MM_dd_HH_mm_ss_SSS
static String	yyyyMMddHHmmss

构造器概要

构造器

构造器和说明
UtilAll()

方法概要

方法

限定符和类型	方法和说明
static int	asInt(String str, int defaultValue)
static long	asLong(String str, long defaultValue)
static String	bytes2string(byte[] src) 字节数组转化成16进制形式
static byte[]	compress(byte[] src, int level)
static long	computeEclipseTimeMilliseconds(long beginTime) 计算耗时操作，单位ms
static long	computNextHalfHourTimeMillis()
static long	computNextHourTimeMillis()
static long	computNextMinutesTimeMillis()
static long	computNextMorningTimeMillis()
static int	crc32(byte[] array)
static int	crc32(byte[] array, int offset, int length)
static String	currentStackTrace()
static String	formatDate(Date date, String pattern)
static String	frontStringAtLeast(String str, int size)
static double	getDiskPartitionSpaceUsedPercent(String path) 获取磁盘分区空间使用率
static int	getPid()
static boolean	isBlank(String str)
static boolean	isItTimeToDo(String when)
static String	jstack()
static String	jstack(Map<Thread,StackTraceElement[]> map)
static String	offset2FileName(long offset) 将offset转化成字符串形式 左补零对齐至20位
static Date	parseDate(String date, String pattern)
static String	responseCode2String(int code)
static byte[]	string2bytes(String hexString) 16进制字符串转化成字节数组
static String	timeMillisToHumanString()
static String	timeMillisToHumanString(long t)
static String	timeMillisToHumanString2(long t)
static String	timeMillisToHumanString3(long t) 返回日期时间格式，精度到秒 格式如下：2013122305190000
static byte[]	uncompress(byte[] src)

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

yyyy_MM_dd_HH_mm_ss

public static final String yyyy_MM_dd_HH_mm_ss

另请参阅:

常量字段值

yyyy_MM_dd_HH_mm_ss_SSS

public static final String yyyy_MM_dd_HH_mm_ss_SSS

另请参阅:

常量字段值

yyyyMMddHHmmss

public static final String yyyyMMddHHmmss

另请参阅:

常量字段值

构造器详细资料

UtilAll

public UtilAll()

方法详细资料

getPid

public static int getPid()

currentStackTrace

public static String currentStackTrace()

offset2FileName

public static String offset2FileName(long offset)

将offset转化成字符串形式
左补零对齐至20位

computeEclipseTimeMilliseconds

public static long computeEclipseTimeMilliseconds(long beginTime)

计算耗时操作，单位ms

isItTimeToDo

public static boolean isItTimeToDo(String when)

timeMillisToHumanString

public static String timeMillisToHumanString()

timeMillisToHumanString

public static String timeMillisToHumanString(long t)

computNextMorningTimeMillis

public static long computNextMorningTimeMillis()

computNextMinutesTimeMillis

public static long computNextMinutesTimeMillis()

computNextHourTimeMillis

public static long computNextHourTimeMillis()

computNextHalfHourTimeMillis

public static long computNextHalfHourTimeMillis()

timeMillisToHumanString2

public static String timeMillisToHumanString2(long t)

timeMillisToHumanString3

public static String timeMillisToHumanString3(long t)

返回日期时间格式，精度到秒
格式如下：2013122305190000

参数:

t -

返回:

getDiskPartitionSpaceUsedPercent

public static double getDiskPartitionSpaceUsedPercent(String path)

获取磁盘分区空间使用率

crc32

public static final int crc32(byte[] array)

crc32

public static final int crc32(byte[] array,
        int offset,
        int length)

bytes2string

public static String bytes2string(byte[] src)

字节数组转化成16进制形式

string2bytes

public static byte[] string2bytes(String hexString)

16进制字符串转化成字节数组

uncompress

public static byte[] uncompress(byte[] src)
                         throws IOException

抛出:

IOException

compress

public static byte[] compress(byte[] src,
              int level)
                       throws IOException

抛出:

IOException

asInt

public static int asInt(String str,
        int defaultValue)

asLong

public static long asLong(String str,
          long defaultValue)

formatDate

public static String formatDate(Date date,
                String pattern)

parseDate

public static Date parseDate(String date,
             String pattern)

responseCode2String

public static String responseCode2String(int code)

frontStringAtLeast

public static String frontStringAtLeast(String str,
                        int size)

isBlank

public static boolean isBlank(String str)

jstack

public static String jstack()

jstack

public static String jstack(Map<Thread,StackTraceElement[]> map)