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BackupDb.java
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import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class BackupDb {
public BackupDb() {
}
public String backup() throws IOException {
  BufferedWriter mBufWriter = null;
//½¨Á¢Ò»¸öBackupDb.batÎļþ
  FileWriter fileWriter = new FileWriter("BackupDb.bat");
  mBufWriter = new BufferedWriter(fileWriter);
  
  /*
   * °ÑÊý¾Ý¿â±¸·Ý·½·¨Ð´ÈëBackupDb.batÎļþÖС£
   * BackupDbUrl ÊÇÊý¾Ý¿â±¸·ÝÃüÁî¡£
   * pg_dump.exe -U postgres -E utf8 test ±¸·ÝÊý¾Ý¿âÃüÁî¡£
   * —U postgres Êý¾Ý¿âÓû§Ãû  -E utf8 É趨×Ö·û±àÂë¸ñʽ¡£test Êý¾Ý¿âÃû
   * BackupDbName ±¸·ÝÎļþËù´æĿ¼ºÍÃû³Æ£¬ÎÒÊÇÒÔ±¸·Ýʱ¼äÃüÃû¡£
   */
  String BackupDbUrl = "d:\\PostgreSQL8\\bin\\pg_dump.exe -U postgres -E utf8 test >";
  //ȡϵͳʱ¼ä
  Date NowTimes = new Date();
  //½«Ê±¼ä¸ñʽ»¯³ÉyyMMddhhmmss(ÄêÔÂÈÕʱ·ÖÃë)£¬ÀýÈç200805010043   2008Äê5ÔÂ1ÈÕ0µã43·Ö¡£
  SimpleDateFormat sdf = new SimpleDateFormat("yyMMddhhmmss");
  String BackupDbName = "d:\\" + sdf.format(NowTimes) + ".sql";
  mBufWriter.write(BackupDbUrl);
  mBufWriter.write(BackupDbName);
  mBufWriter.newLine();
  mBufWriter.flush();
  mBufWriter.close();
  try {
   Runtime.getRuntime().exec("BackupDb.bat"); //Ö´ÐÐBackupDb.batÎļþ½øÐб¸·ÝÊý¾Ý¿â
  } catch (Exception e) {
   e.printStackTrace();
  }
  return BackupDbName;
}
}
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TimerUse.java
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package yifeng.com.org;
import java.text.SimpleDateFormat;
import java.util.*;
import java.io.*;
public class TimerUse {
public static void m


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