通用日期处理函数，日期处理大全[2]

  string pattern = "yyyy-mm-dd hh:mm";
  return parsedateformat( strdate, pattern );
 }

 /**
  @return string
  */
 public static synchronized string getdatedayformat()
 {
  calendar cal = calendar.getinstance();
  return getdatedayformat( cal );
 }

 /**
  @param cal
  @return string
  */
 public static synchronized string getdatedayformat( java.util.calendar cal )
 {
  string pattern = "yyyy-mm-dd";
  return getdateformat( cal, pattern );
 }

 /**
  @param date
  @return string
  */
 public static synchronized string getdatedayformat( java.util.date date )
 {
  string pattern = "yyyy-mm-dd";
  return getdateformat( date, pattern );
 }

 /**
  @param strdate
  @return java.util.calendar
  */
 public static synchronized calendar parsecalendardayformat( string strdate )
 {
  string pattern = "yyyy-mm-dd";
  return parsecalendarformat( strdate, pattern );
 }

 /**
  @param strdate
  @return java.util.date
  */
 public static synchronized date parsedatedayformat( string strdate )
 {
  string pattern = "yyyy-mm-dd";
  return parsedateformat( strdate, pattern );
 }

 /**
  @return string
  */
 public static synchronized string getdatefileformat()
 {
  calendar cal = calendar.getinstance();
  return getdatefileformat( cal );
 }

 /**
  @param cal
  @return string
  */
 public static synchronized string getdatefileformat( java.util.calendar cal )
 {
  string pattern = "yyyy-mm-dd_hh-mm-ss";
  return getdateformat( cal, pattern );
 }

 /**
  @param date
  @return string
  */
 public static synchronized string getdatefileformat( java.util.date date )
 {
  string pattern = "yyyy-mm-dd_hh-mm-ss";
  return getdateformat( date, pattern );
 }

 /**
  @param strdate
  @return java.util.calendar
  */
 public static synchronized calendar parsecalendarfileformat( string strdate )
 {
  string pattern = "yyyy-mm-dd_hh-mm-ss";
  return parsecalendarformat( strdate, pattern );
 }

 /**
  @param strdate
  @return java.util.date
  */
 public static synchronized date parsedatefileformat( string strdate )
 {
  string pattern = "yyyy-mm-dd_hh-mm-ss";
  return parsedateformat( strdate, pattern );
 }

 /**
  @return string
  */
 public static synchronized string getdatew3cformat()
 {
  calendar cal = calendar.getinstance();
  return getdatew3cformat( cal );
 }

 /**
  @param cal
  @return string
  */
 public static synchronized string getdatew3cformat( java.util.calendar cal )
 {
  string pattern = "yyyy-mm-dd hh:mm:ss";
  return getdateformat( cal, pattern );
 }

 /**
  @param date
  @return string
  */
 public static synchronized string getdatew3cformat( java.util.date date )
 {
  string pattern = "yyyy-mm-dd hh:mm:ss";
  return getdateformat( date, pattern );
 }

 /**
  @param strdate
  @return java.util.calendar
  */
 public static synchronized calendar parsecalendarw3cformat( string strdate )
 {
  string pattern = "yyyy-mm-dd hh:mm:ss";
  return parsecalendarformat( strdate, pattern );
 }

 /**
  @param strdate
  @return java.util.date
  */
 public static synchronized date parsedatew3cformat( string strdate )
 {
  string pattern = "yyyy-mm-dd hh:mm:ss";
  return parsedateformat( strdate, pattern );
 }

 /**
  @param cal
  @return string
  */
 public static synchronized string getdateformat( java.util.calendar cal )
 {
  string pattern = "yyyy-mm-dd hh:mm:ss";
  return getdateformat( cal, pattern );
 }

 /**
  @param date
  @return string
  */
 public static synchronized string getdateformat( java.util.date date )
 {
  string pattern = "yyyy-mm-dd hh:mm:ss";