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quartz cron expression

AIRDREAM — Fri, 09 Feb 2007 03:02:00 GMT

A "Cron-Expression" is a string comprised of 6 or 7 fields separated by white space. The 6 mandatory and 1 optional fields are as follows:

Field Name	Allowed Values	Allowed Special Characters
`Seconds`	`0-59`	`, - * /`
`Minutes`	`0-59`	`, - * /`
`Hours`	`0-23`	`, - * /`
`Day-of-month`	`1-31`	`, - * ? / L W C`
`Month`	`1-12 or JAN-DEC`	`, - * /`
`Day-of-Week`	`1-7 or SUN-SAT`	`, - * ? / L C #`
`Year (Optional)`	`empty, 1970-2099`	`, - * /`

The '*' character is used to specify all values. For example, "*" in the minute field means "every minute".

The '?' character is allowed for the day-of-month and day-of-week fields. It is used to specify 'no specific value'. This is useful when you need to specify something in one of the two fileds, but not the other. See the examples below for clarification.

The '-' character is used to specify ranges For example "10-12" in the hour field means "the hours 10, 11 and 12".

The ',' character is used to specify additional values. For example "MON,WED,FRI" in the day-of-week field means "the days Monday, Wednesday, and Friday".

The '/' character is used to specify increments. For example "0/15" in the seconds field means "the seconds 0, 15, 30, and 45". And "5/15" in the seconds field means "the seconds 5, 20, 35, and 50". You can also specify '/' after the '*' character - in this case '*' is equivalent to having '0' before the '/'.

The 'L' character is allowed for the day-of-month and day-of-week fields. This character is short-hand for "last", but it has different meaning in each of the two fields. For example, the value "L" in the day-of-month field means "the last day of the month" - day 31 for January, day 28 for February on non-leap years. If used in the day-of-week field by itself, it simply means "7" or "SAT". But if used in the day-of-week field after another value, it means "the last xxx day of the month" - for example "6L" means "the last friday of the month". When using the 'L' option, it is important not to specify lists, or ranges of values, as you'll get confusing results.

The 'W' character is allowed for the day-of-month field. This character is used to specify the weekday (Monday-Friday) nearest the given day. As an example, if you were to specify "15W" as the value for the day-of-month field, the meaning is: "the nearest weekday to the 15th of the month". So if the 15th is a Saturday, the trigger will fire on Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th. However if you specify "1W" as the value for day-of-month, and the 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not 'jump' over the boundary of a month's days. The 'W' character can only be specified when the day-of-month is a single day, not a range or list of days.

The 'L' and 'W' characters can also be combined for the day-of-month expression to yield 'LW', which translates to "last weekday of the month".

The '#' character is allowed for the day-of-week field. This character is used to specify "the nth" XXX day of the month. For example, the value of "6#3" in the day-of-week field means the third Friday of the month (day 6 = Friday and "#3" = the 3rd one in the month). Other examples: "2#1" = the first Monday of the month and "4#5" = the fifth Wednesday of the month. Note that if you specify "#5" and there is not 5 of the given day-of-week in the month, then no firing will occur that month.

The 'C' character is allowed for the day-of-month and day-of-week fields. This character is short-hand for "calendar". This means values are calculated against the associated calendar, if any. If no calendar is associated, then it is equivalent to having an all-inclusive calendar. A value of "5C" in the day-of-month field means "the first day included by the calendar on or after the 5th". A value of "1C" in the day-of-week field means "the first day included by the calendar on or after sunday".

The legal characters and the names of months and days of the week are not case sensitive.

Here are some full examples:

Expression		Meaning
`"0 0 12 * * ?"`		`Fire at 12pm (noon) every day`
`"0 15 10 ? * *"`		`Fire at 10:15am every day`
`"0 15 10 * * ?"`		`Fire at 10:15am every day`
`"0 15 10 * * ? *"`		`Fire at 10:15am every day`
`"0 15 10 * * ? 2005"`		`Fire at 10:15am every day during the year 2005`
`"0 * 14 * * ?"`		`Fire every minute starting at 2pm and ending at 2:59pm, every day`
`"0 0/5 14 * * ?"`		`Fire every 5 minutes starting at 2pm and ending at 2:55pm, every day`
`"0 0/5 14,18 * * ?"`		`Fire every 5 minutes starting at 2pm and ending at 2:55pm, AND fire every 5 minutes starting at 6pm and ending at 6:55pm, every day`
`"0 0-5 14 * * ?"`		`Fire every minute starting at 2pm and ending at 2:05pm, every day`
`"0 10,44 14 ? 3 WED"`		`Fire at 2:10pm and at 2:44pm every Wednesday in the month of March.`
`"0 15 10 ? * MON-FRI"`		`Fire at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday`
`"0 15 10 15 * ?"`		`Fire at 10:15am on the 15th day of every month`
`"0 15 10 L * ?"`		`Fire at 10:15am on the last day of every month`
`"0 15 10 ? * 6L"`		`Fire at 10:15am on the last Friday of every month`
`"0 15 10 ? * 6L"`		`Fire at 10:15am on the last Friday of every month`
`"0 15 10 ? * 6L 2002-2005"`		`Fire at 10:15am on every last friday of every month during the years 2002, 2003, 2004 and 2005`
`"0 15 10 ? * 6#3"`		`Fire at 10:15am on the third Friday of every month`

Pay attention to the effects of '?' and '*' in the day-of-week and day-of-month fields!

NOTES:

Support for the features described for the 'C' character is not complete.
Support for specifying both a day-of-week and a day-of-month value is not complete (you'll need to use the '?' character in on of these fields).
Be careful when setting fire times between mid-night and 1:00 AM - "daylight savings" can cause a skip or a repeat depending on whether the time moves back or jumps forward.

AIRDREAM 2007-02-09 11:02 发表评论

AIRDREAM — Fri, 29 Dec 2006 03:28:00 GMT

1�?font size="4">Antelope

�|�址�Q?a src="http://antelope.tigris.org/">http://antelope.tigris.org/

我用到过一个控制时间的标签

2�?font size="4">ant-contrib

�|�址�Q?a src="ant-contrib.sourceforge.net">ant-contrib.sourceforge.net

我用到过�{�逻辑标签�?br />
下面是我写的一个ant片断�Q�用来copy不存在的文�g�Q�如果存在，则询问是否覆盖�?br />

  check file : ${targetFile} exist or not















  deploy system files over

    override the file...




  file ${targetFile} dose not existed,deploying this file

AIRDREAM 2006-12-29 11:28 发表评论

AIRDREAM — Tue, 27 Jun 2006 04:02:00 GMT

�׃��公司需要，在网上找了一下支持SFTP的包�Q�发��C��个不错的�Q�一个是 Secure FTP Factory �Q�一个是 J2SSH Maverick �Q�但�?span class="pageheader">是收费的,现在��单介�l�一�?J2SSH Maverick 怎样��单��用。代码如下：
/* HEADER */
import com.maverick.ssh.*;
import com.maverick.ssh2.*;
import java.io.*;

import com.sshtools.net.*;
import com.sshtools.sftp.*;

/**
* This example demonstrates the connection process connecting to an SSH2 server
* and usage of the SFTP client.
*/
public class MySftpConnect {
public static void main(String[] args) {
MySftpConnect c = new MySftpConnect();
c.createSftpClient("192.168.0.108", "szb", "szbpatternx86", 22);�Q�－参数依次��Z��机名�Q�用户名�Q�密码，端口受��?br /> }

public void createSftpClient(String hostname, String username,
   String password, int port) {
  try {
   System.out.println("Connecting to " + hostname);

// Create an SshConnector instance
SshConnector con = SshConnector.getInstance();

   // Connect to the host
   SocketTransport t = new SocketTransport(hostname, port);
   t.setTcpNoDelay(true);
   SshClient ssh = con.connect(t, username);
   Ssh2Client ssh2 = (Ssh2Client) ssh;

   // Authenticate the user using password authentication
   com.maverick.ssh.PasswordAuthentication pwd = new com.maverick.ssh.PasswordAuthentication();
   do {
    pwd.setPassword(password);
   } while (ssh2.authenticate(pwd) != SshAuthentication.COMPLETE
     && ssh.isConnected());
   // Start a session and do basic IO
   if (ssh.isAuthenticated()) {
    SftpClient sftp = new SftpClient(ssh2);
    // test create file.
    this.createTestFile(sftp);
   }
  } catch (Throwable th) {
   th.printStackTrace();
  }
}

//��试IO操作
public void createTestFile(SftpClient sftp) throws Exception {

File textFile = new File(System.getProperty("user.home"), "shining.txt");
FileOutputStream tout = new FileOutputStream(textFile);

  // Create a file with \r\n as EOL
  for (int i = 0; i < 100; i++) {
   tout.write("All work and no play makes Jack a dull boy中文\r\n"
     .getBytes());
  }
  tout.close();

// Perform some text mode operations指定文�g存储为txt�c�d��
sftp.setTransferMode(SftpClient.MODE_TEXT);

  // Tell the client which EOL the remote client is using - note
  // that this will be ignored with version 4 of the protocol
  sftp.setRemoteEOL(SftpClient.EOL_LF);
  //��文件上传到服务�?br />  sftp.put(textFile.getAbsolutePath());
}
}

写的不太详细�Q�请参考：http://3sp.com/kb/idx/0/014/article/Getting_started_with_J2SSH_Maverick.html

AIRDREAM 2006-06-27 12:02 发表评论

AIRDREAM — Sat, 24 Jun 2006 02:06:00 GMT

��Z��方便大家查找�Q�整理内容如下：
1. MySQL(http://www.mysql.com)mm.mysql-2.0.2-bin.jar
Class.forName( "org.gjt.mm.mysql.Driver" );
cn = DriverManager.getConnection( "jdbc:mysql://MyDbComputerNameOrIP:3306/myDatabaseName", sUsr, sPwd );

2. PostgreSQL(http://www.de.postgresql.org)pgjdbc2.jar
Class.forName( "org.postgresql.Driver" );
cn = DriverManager.getConnection( "jdbc:postgresql://MyDbComputerNameOrIP/myDatabaseName", sUsr, sPwd );

3. Oracle(http://www.oracle.com/ip/deploy/database/oracle9i/)classes12.zip
Class.forName( "oracle.jdbc.driver.OracleDriver" );
cn = DriverManager.getConnection( "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", sUsr, sPwd );
4. Sybase(http://jtds.sourceforge.net)jconn2.jar

Class.forName( "com.sybase.jdbc2.jdbc.SybDriver" );
cn = DriverManager.getConnection( "jdbc:sybase:Tds:MyDbComputerNameOrIP:2638", sUsr, sPwd );
//(Default-Username/Password: "dba"/"sql")

5. Microsoft SQLServer(http://jtds.sourceforge.net)
Class.forName( "net.sourceforge.jtds.jdbc.Driver" );
cn = DriverManager.getConnection( "jdbc:jtds:sqlserver://MyDbComputerNameOrIP:1433/master", sUsr, sPwd );

6. Microsoft SQLServer(http://www.microsoft.com)
Class.forName( "com.microsoft.jdbc.sqlserver.SQLServerDriver" );
cn = DriverManager.getConnection( "jdbc:microsoft:sqlserver://MyDbComputerNameOrIP:1433;databaseName=master", sUsr, sPwd );

7. ODBC
Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );
Connection cn = DriverManager.getConnection( "jdbc:odbc:" + sDsn, sUsr, sPwd );

8.DB2(新添�?
Class.forName("com.ibm.db2.jdbc.net.DB2Driver");
String url="jdbc:db2://192.9.200.108:6789/SAMPLE"
cn = DriverManager.getConnection( url, sUsr, sPwd );

9.Microsoft SQL Server series (6.5, 7.x and 2000) and Sybase 10

JDBC Name: jTDS
URL: http://jtds.sourceforge.net/
Version: 0.5.1
Download URL: http://sourceforge.net/project/showfiles.php?group_id=33291

语法:
Class.forName("net.sourceforge.jtds.jdbc.Driver ");
Connection con = DriverManager.getConnection("jdbc:jtds:sqlserver://host:port/database","user","password");
or
Connection con = DriverManager.getConnection("jdbc:jtds:sybase://host:port/database","user","password");

10.Postgresql
JDBC Name: PostgreSQL JDBC
URL: http://jdbc.postgresql.org/
Version: 7.3.3 build 110
Download URL: http://jdbc.postgresql.org/download.html
语法:
Class.forName("org.postgresql.Driver");
Connection con=DriverManager.getConnection("jdbc:postgresql://host:port/database","user","password");

11.IBM AS400��L��在用的JDBC语法
有装V4R4以上版本的Client Access Express
可以在C:\Program Files\IBM\Client Access\jt400\lib
扑ֈ� driver 档案 jt400.zip�Q��ƈ更改扩展名成�?jt400.jar
语法:
java.sql.DriverManager.registerDriver (new com.ibm.as400.access.AS400JDBCDriver ());
Class.forName("com.ibm.as400.access.AS400JDBCConnection");
con = DriverManager.getConnection("jdbc:as400://IP","user","password");

12.informix
Class.forName("com.informix.jdbc.IfxDriver").newInstance();
String url =
"jdbc:informix-sqli://123.45.67.89:1533/testDB:INFORMIXSERVER=myserver;
user=testuser;password=testpassword";
Lib�Q�jdbcdrv.zip

Class.forName( "com.sybase.jdbc.SybDriver" )
url="jdbc:sybase:Tds:127.0.0.1:2638/asademo";
SybConnection connection= (SybConnection)DriverManager.getConnection(url,"dba","sql");

13.SAP DB
Class.forName ("com.sap.dbtech.jdbc.DriverSapDB");
java.sql.Connection connection = java.sql.DriverManager.getConnection ( "jdbc:sapdb://" + host + "/" + database_name,user_name, password)

14.InterBase
String url = "jdbc:interbase://localhost/e:/testbed/database/employee.gdb";
Class.forName("interbase.interclient.Driver");
//Driver d = new interbase.interclient.Driver (); /* this will also work if you do not want the line above */
Connection conn = DriverManager.getConnection( url, "sysdba", "masterkey" );

15.HSqlDB
url: http://hsqldb.sourceforge.net/
driver: org.hsqldb.jdbcDriver
�q�接方式�?�U�，分别为：
con-str�Q�内存）: jdbc:hsqldb.
con-str�Q�本圎ͼ�: jdbc:hsqldb:/path/to/the/db/dir
con-str�Q�http�Q? jdbc:hsqldb:http://dbsrv
con-str�Q�hsql�Q? jdbc:hsqldb:hsql://dbsrv

AIRDREAM 2006-06-24 10:06 发表评论

AIRDREAM — Wed, 21 Jun 2006 08:36:00 GMT

System.getProperties() 可以得到很多�pȝ��的属性，如下�Q?
{java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition,
sun.boot.library.path=C:\Program Files\Java\j2re1.4.2_09\bin,
java.vm.version=1.4.2_09-b05,
java.vm.vendor=Sun Microsystems Inc.,
java.vendor.url=http://java.sun.com/,
path.separator=;,
java.vm.name=Java HotSpot(TM) Client VM,
file.encoding.pkg=sun.io,
user.country=CN,
sun.os.patch.level=Service Pack 2,
java.vm.specification.name=Java Virtual Machine Specification,
user.dir=D:\workspace\test,
java.runtime.version=1.4.2_09-b05,
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment,
java.endorsed.dirs=C:\Program Files\Java\j2re1.4.2_09\lib\endorsed,
os.arch=x86,
java.io.tmpdir=C:\DOCUME~1\szb\LOCALS~1\Temp\,
line.separator= ,
java.vm.specification.vendor=Sun Microsystems Inc.,
user.variant=,
os.name=Windows XP,
sun.java2d.fontpath=,
java.library.path=C:\Program Files\Java\j2re1.4.2_09\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;D:\apache-ant-1.6.5\bin;D:\jdk1.5.0_05\bin,
java.specification.name=Java Platform API Specification,
java.class.version=48.0,
java.util.prefs.PreferencesFactory=java.util.prefs.WindowsPreferencesFactory,
os.version=5.1,
user.home=C:\Documents and Settings\szb,
user.timezone=,
java.awt.printerjob=sun.awt.windows.WPrinterJob,
file.encoding=GBK,
java.specification.version=1.4,
java.class.path=D:\workspace\test,
user.name=szb,
java.vm.specification.version=1.0,
java.home=C:\Program Files\Java\j2re1.4.2_09,
sun.arch.data.model=32,
user.language=zh,
java.specification.vendor=Sun Microsystems Inc.,
awt.toolkit=sun.awt.windows.WToolkit,
java.vm.info=mixed mode,
java.version=1.4.2_09,
java.ext.dirs=C:\Program Files\Java\j2re1.4.2_09\lib\ext,
sun.boot.class.path=C:\Program Files\Java\j2re1.4.2_09\lib\rt.jar;C:\Program Files\Java\j2re1.4.2_09\lib\i18n.jar;C:\Program Files\Java\j2re1.4.2_09\lib\sunrsasign.jar;C:\Program Files\Java\j2re1.4.2_09\lib\jsse.jar;C:\Program Files\Java\j2re1.4.2_09\lib\jce.jar;C:\Program Files\Java\j2re1.4.2_09\lib\charsets.jar;C:\Program Files\Java\j2re1.4.2_09\classes,
java.vendor=Sun Microsystems Inc.,
file.separator=\,
java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi,
sun.io.unicode.encoding=UnicodeLittle,
sun.cpu.endian=little,
sun.cpu.isalist=pentium i486 i386}

AIRDREAM 2006-06-21 16:36 发表评论