Sailpoint与Eclipse中Java空值日期判断逻辑异常问题排查

我在Eclipse中进行基准测试，处理用户登录登出场景的两个日期字符串，其中离职日期可能为空（需赋值为null），该逻辑将用于Sailpoint工程中。

Eclipse测试代码 #

public static void main(String[] args) {
    // TODO Auto-generated method stub
    
    DateTimeFormatter sdf = DateTimeFormatter.ofPattern("dd/MM/yyyy");
    String tarihEnd= null; 
    String tarihStart = "18/01/2023";
    
   try {
    if  (tarihEnd !=null || tarihStart!=null)
    {
        
        LocalDate jobLeavingDay = LocalDate.parse(tarihEnd,sdf);
        LocalDate jobStartingDay = LocalDate.parse(tarihStart,sdf);
        
             LocalDateTime beginDate = jobLeavingDay.atTime(8, 00);
             LocalDateTime endDate = jobLeavingDay.atTime(16, 30);
             LocalDateTime nowDateTime = LocalDateTime.now();
            
        if(nowDateTime.compareTo(beginDate)==1 && nowDateTime.compareTo(endDate)==-1) 
                  System.out.println("False1");
        
            else if(jobLeavingDay.compareTo(nowDateTime.toLocalDate())<0 && jobStartingDay.compareTo(nowDateTime.toLocalDate())<0) // jobleaving and jobstarting < nowdatetime = true
                System.out.println("True1");

            else if (jobStartingDay.compareTo(nowDateTime.toLocalDate())<0 && jobLeavingDay.compareTo(nowDateTime.toLocalDate()) >0) 
                System.out.println("False2");
        
            else if (jobStartingDay.compareTo(nowDateTime.toLocalDate())>0)
                System.out.println("True");
        
            else if (jobStartingDay.compareTo(nowDateTime.toLocalDate())<0)
                System.out.println("False3"); //jobleaving null, jobStarting_NowDate den once gelirse
    }} catch (Exception e) {
        
          tarihStart=null;
           tarihEnd=null;
        
        }     
}
}

在Sailpoint中，我从CSV文件提取用户信息进行身份识别。例如，入职日期为2022/12/20的用户应返回True，但无论使用compareTo的>符号还是isAfter方法，结果始终为False。

Sailpoint现有代码 #

import java.time.LocalDate;
import java.time.LocalTime;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import sailpoint.object.*;

DateTimeFormatter sdf= DateTimeFormatter.ofPattern("dd/MM/yyyy");

Attributes attrs = link.getAttributes();
String tarih = attrs.getString("JobLeaveDate");
String tarih2 = attrs.getString("JobStartDate");

try{
if(tarih!=null || tarih2!=null {

LocalDate jobLeavingDay = LocalDate.parse(tarih, sdf);
LocalDate jobStartingDay = LocalDate.parse(tarih2, sdf);
LocalDate nowDate = LocalDate.now();

         //LocalDateTime beginDate = jobLeavingDay.atTime(8, 00);
        // LocalDateTime endDate = jobLeavingDay.atTime(16, 30);
                // LocalDateTime nowDateTime = LocalDateTime.now();

if (jobStartingDay.compareTo(nowDate)>0)
stat="True";

else if (jobStartingDay.compareTo(nowDate)<0)
stat="False";
} } catch (Exception e) {
  
           tarih=null;
        }   
return (stat)  

需要修改的核心点 #

1. 日期格式不匹配 #

CSV中入职日期格式为yyyy/MM/dd（如2022/12/20），但代码中使用的是dd/MM/yyyy格式化器，解析时会直接抛出异常进入catch块，导致stat未被正确赋值。需将格式化器改为对应CSV的格式：

DateTimeFormatter sdf= DateTimeFormatter.ofPattern("yyyy/MM/dd");

2. 空值处理逻辑错误 #

• 原条件if(tarih!=null || tarih2!=null)错误：当离职日期为空（tarih=null）但入职日期存在时，仍会进入代码块，此时LocalDate.parse(tarih, sdf)会抛异常。应改为仅判断入职日期非空：

  if(tarih2 != null)
  

• 离职日期需先判断再解析，避免空指针：

  LocalDate jobLeavingDay = tarih != null ? LocalDate.parse(tarih, sdf) : null;
  

3. Catch块与变量初始化问题 #

• 代码未初始化stat变量，若进入catch块会导致返回未定义值，需在开头初始化：

  String stat = "False"; // 默认值根据需求调整
  

• Catch块无需修改tarih，应专注于异常后的逻辑处理，比如保持stat默认值。

4. 补充相等场景的处理 #

原代码未覆盖入职日期等于当前日期的情况，需补充分支：

if (jobStartingDay.isAfter(nowDate)) {
    stat = "True";
} else if (jobStartingDay.isBefore(nowDate)) {
    stat = "False";
} else {
    // 入职日期等于当前日期时的逻辑，例如返回True或False
    stat = "True";
}

修改后的Sailpoint代码示例 #

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import sailpoint.object.*;

// 匹配CSV的日期格式
DateTimeFormatter sdf = DateTimeFormatter.ofPattern("yyyy/MM/dd");
// 初始化stat默认值
String stat = "False";

Attributes attrs = link.getAttributes();
String tarih = attrs.getString("JobLeaveDate");
String tarih2 = attrs.getString("JobStartDate");

try {
    // 仅当入职日期存在时处理
    if (tarih2 != null) {
        LocalDate jobLeavingDay = tarih != null ? LocalDate.parse(tarih, sdf) : null;
        LocalDate jobStartingDay = LocalDate.parse(tarih2, sdf);
        LocalDate nowDate = LocalDate.now();

        if (jobStartingDay.isAfter(nowDate)) {
            stat = "True";
        } else if (jobStartingDay.isBefore(nowDate)) {
            stat = "False";
        } else {
            // 处理入职日期等于当前日期的情况
            stat = "True";
        }
    }
} catch (Exception e) {
    // 异常时保持默认值，或根据需求调整
    stat = "False";
}

return stat;

内容的提问来源于stack exchange，提问作者Yusuf Akar