任意时间字符串转换成时间,无需指定解析模板
此方法适用于做excel导入,以及时间格式不可控的情况
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* @Classname: DateUtils
* @Description: TODO
* @Author: Neo
* @Date: 2018/11/9 9:48
* @Version: 1.0
*/
public class DateUtils {
/**
* @Description: 任意时间字符串转换成时间,无需指定解析模板
* @param: 日期
* @return:
* @Author: Neo
* @Date: 2018/11/9 9:50
* @Version: 1.0
*/
public static Date parseStringToDate(String date) throws ParseException {
Date result;
String parse = date.replaceFirst("[0-9]{4}([^0-9]?)", "yyyy$1");
parse = parse.replaceFirst("^[0-9]{2}([^0-9]?)", "yy$1");
parse = parse.replaceFirst("([^0-9]?)[0-9]{1,2}([^0-9]?)", "$1MM$2");
parse = parse.replaceFirst("([^0-9]?)[0-9]{1,2}( ?)", "$1dd$2");
parse = parse.replaceFirst("( )[0-9]{1,2}([^0-9]?)", "$1HH$2");
parse = parse.replaceFirst("([^0-9]?)[0-9]{1,2}([^0-9]?)", "$1mm$2");
parse = parse.replaceFirst("([^0-9]?)[0-9]{1,2}([^0-9]?)", "$1ss$2");
DateFormat format = new SimpleDateFormat(parse);
result = format.parse(date);
return result;
}
public static void main(String[] args) {
try {
Date d1 = parseStringToDate("2018年11月1日");
Date d2 = parseStringToDate("2018-11-2");
Date d3 = parseStringToDate("2018/11/3");
Date d4 = parseStringToDate("2018.11.4");
Date d5 = parseStringToDate("2018115");
Date d6 = parseStringToDate("2018年11月1日 11:11:11");
Date d7 = parseStringToDate("2018115 12:12:12");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println("d1:"+sdf.format(d1));
System.out.println("d2:"+sdf.format(d2));
System.out.println("d3:"+sdf.format(d3));
System.out.println("d4:"+sdf.format(d4));
System.out.println("d5:"+sdf.format(d5));
System.out.println("d6:"+sdf.format(d6));
System.out.println("d7:"+sdf.format(d7));
}catch (Exception e){
e.printStackTrace();
}
}
}
测试结果如下: