所以我有工具首先应用程序检查数据库，然后发送电子邮件。它完成了。对我来说有什么问题是调度。我已经阅读了一些计时器任务。我需要这些工具每天早上 00:00 运行。无论好坏，这是我的代码
package SQLTest;
import java.sql.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
import SQLTest.EmailSender;
public class TestSQL
{
public static void sQl(String datesec)
{
try
{
// create mysql database connection
String myDriver = "org.gjt.mm.mysql.Driver";
String myUrl = "jdbc:mysql://localhost;
Class.forName(myDriver);
String userName = dbuser;
String pass = dbpass;
String checkQa = "check it QA";
String juDul = "blabla";
String opcel1 = "opcel1 ";
String opcel2 = "opcel2 ";
String opcel3 = "opcel3 ";
String opcel4 = "opcel4 ";
String opcel5 = "opcel5 ";
String opcel6 = "opcel6 ";
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE, -1);
Date time = (Date) calendar.getTime();
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
String currentDate = dateFormat.format(time);
Connection conn = DriverManager.getConnection(myUrl, userName , pass );
String query = "the query"
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query);
//java resultset
while (rs.next())
{
int tanggal = rs.getInt("tanggal");
// print the results
System.out.format("%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s\n");
if(column1 == 0) EmailSender.emailNotification(juDul+opcel1+currentDate,
"email Body " + "\n" + checkQa);
}
st.close();
}
catch (Exception e)
{
System.err.println("Got an exception! ");
System.err.println(e.getMessage());
}
}
}
我必须上新课来处理日程吗？是否有一些很好的例子可以通过我的课程（TestSQL）进行调度？
提前致谢
编辑：这是我的调度程序类。我设法把它传给这个班级。
package SQLTest;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Timer;
import java.util.TimerTask;
public final class Scheduler extends TimerTask{
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
TimerTask scheduletimer = new Scheduler();
//perform the task once a day at 00 a.m., starting tomorrow morning
//(other styles are possible as well)
Timer timer = new Timer();
Timer t = new Timer();
t.scheduleAtFixedRate(
new TimerTask()
{
public void run()
{
System.out.print("========[ 3600 Second Passed ---> 1 Hour ]=======\n");
}
},
0, // run first occurrence immediately
3600000);
System.out.println("scheduling ==> " + getTomorrowMorning00am());
try{
timer.scheduleAtFixedRate(scheduletimer, getTomorrowMorning00am(), fONCE_PER_DAY);
}catch(Exception e){
System.out.print("ERROR : " +e);
}
}
/**
* Implements TimerTask's abstract run method.
*/
public void run(){
//here is my class implementation
System.out.print("===================================================\n");
System.out.print("schedule Started");
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
Date date = new Date();
String datesec = dateFormat.format(date);
try {
cal.setTime( dateFormat.parse(datesec));
} catch (ParseException e) {
// TODO Auto-generated catch block
System.out.print("ERROR : " + e);
}
cal.add( Calendar.DATE, 0 );
datesec = dateFormat.format(cal.getTime());
**TestSQL.sQl(datesec);**
System.out.print("===================================================\n");
System.out.print("scheduling ==> " + getTomorrowMorning00am());
}
// PRIVATE ////
//expressed in milliseconds
private final static long fONCE_PER_DAY = 1000*60*60*24 ;
private final static int fONE_DAY = 1;
private final static int fZERO_AM = 0;
private final static int fZERO_MINUTES = 0;
private static Date getTomorrowMorning00am(){
Calendar tomorrow = new GregorianCalendar();
tomorrow.add(Calendar.DATE, fONE_DAY);
Calendar result = new GregorianCalendar(
tomorrow.get(Calendar.YEAR),
tomorrow.get(Calendar.MONTH),
tomorrow.get(Calendar.DATE),
fZERO_AM,
fZERO_MINUTES
);
return result.getTime();
}
}
注意：如果有人对我的代码有其他想法，请随意。是错的，是不完整的，还是别的什么。保持分享：D