問(wèn)題：我正在為我的春季批量工作方法之一編寫單元測(cè)試。我使用mockito 來(lái)模擬我的批處理作業(yè)依賴項(xiàng)。在 jobExecution 發(fā)揮作用之前一切都很好。我想要測(cè)試的方法調(diào)用了 jobExecution 變量，但隨后它給了我 NPE (NullPointerException)，并且我沒(méi)有成功用mockito 來(lái)模擬它。我嘗試過(guò)的事情：就像問(wèn)題部分提到的那樣，我嘗試使用 @Mock 注釋來(lái)模擬它。代碼：我的方法需要進(jìn)行單元測(cè)試（currentJobExecution 是給我錯(cuò)誤的行）：    @Override    public List<Date> getValidDates() {        List<Date> allDates = dateService.findAllFailedDates(getJobName(), false);        List<Date> datesThatCanBeWorkedOn = getAllDatesThatHaveNecessaryDependencies(allDates);        Collection<Date> datesThatCannotBeWorkedOn = CollectionUtils.subtract(allDates, datesThatCanBeWorkedOn);        currentJobExecution.getExecutionContext().put("datesThatCannotBeWorkedOn", datesThatCannotBeWorkedOn);        return datesThatCanBeWorkedOn;    }我的單元測(cè)試嘗試測(cè)試上面的代碼：@RunWith(SpringJUnit4ClassRunner.class)public class ValidDateReaderTest extends BaseTest {    @InjectMocks    private ValidDateReader validDateReader;    @Mock    private DateService dateService;    @Mock    private JobExecution currentJobExecution;    @Mock    private JobInstance jobInstance;    @Test    public void getDatesNeededProcessingTest() {        when(jobInstance.getJobName()).thenReturn(BatchNames.VALID_DATE_READER);        when(currentJobExecution.getJobInstance()).thenReturn(jobInstance);        List<Date> allDates = new ArrayList<>();        allDates.add(DateUtils.addDays(new Date(), -5));        allDates.add(DateUtils.addDays(new Date(), -4));        allDates.add(DateUtils.addDays(new Date(), -3));        allDates.add(DateUtils.addDays(new Date(), -2));        allDates.add(DateUtils.addDays(new Date(), -1));        when(dateService.findAllFailedDates(BatchNames.VALID_DATE_READER, false))                .thenReturn(allDates);        assertEquals(1, validDateReader.getValidDates().size());    }}預(yù)期結(jié)果和實(shí)際結(jié)果：當(dāng)我刪除這個(gè) currentJobExecution 時(shí)currentJobExecution.getExecutionContext().put("datesThatCannotBeWorkedOn", datesThatCannotBeWorkedOn);從我想要測(cè)試的方法來(lái)看，測(cè)試成功完成。但我無(wú)法刪除它，因?yàn)樗菢I(yè)務(wù)邏輯的一部分。