String datetime = "20140212111012";
    DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
    LocalDateTime ldt = LocalDateTime.parse(datetime,dtf);
    System.out.println(ldt); 
 
    DateTimeFormatter fa = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    String datetime2 = ldt.format(fa);
    System.out.println(datetime2);

  //獲取的值為"19570323"
 String dateString = emp.getHealthCarePrincipalPerson().getBirthTime().getValue().toString();
 
 //1、定義轉(zhuǎn)換格式
 SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  SimpleDateFormat formatter2 = new SimpleDateFormat("yyyyMMdd");
 //2、調(diào)用formatter2.parse(),將"19570323"轉(zhuǎn)化為date類型 輸出為：Sat Mar 23 00:00:00 GMT+08:00 1957
 Date date = formatter2.parse(dateString);
 
 //3、將date類型 (Sat Mar 23 00:00:00 GMT+08:00 1957)轉(zhuǎn)化為String類型 
 //注意現(xiàn)在用的是formatter來做轉(zhuǎn)換,輸出為String類型的："1957-03-23"
 String dString = formatter.format(date);
 
 //4、將String轉(zhuǎn)化為date，需要注意java.sql.Date.valueOf()函數(shù)只能接受參數(shù)類型為yyyy-MM-dd類型的
 Date data = java.sql.Date.valueOf(dString);
     //5、將獲取的date類型的出生日期賦值給javabean
     personAudit.setBirthDate((emp.getHealthCarePrincipalPerson() != null 
     && emp.getHealthCarePrincipalPerson().getBirthTime() != null)?data:null);