java - Hibernate:持续存在数据问题

Question

无法让我的 setTestValue 方法将我的数据保留在数据库中，我正在从 readcsvfile 方法中调用此方法..我没有看到任何异常，但数据没有到达数据库..我正在使用 Hibernate 和 postgres db

@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
@Service
public class TestValueService implements ITestValueService
{
  /**
 *
*/
    private static final long serialVersionUID = -1027211428586214287L;

  @Autowired
 GenericDao genericDao;

 private static final Logger LOG = Logger.getLogger(TestValueService.class);
 private TestValue defaultValue;

 public TestValueService()
{

}

@Transactional(readOnly = false)    
**private void setTestValue**(TestValue defaultValue){
    genericDao.makePersistent(defaultValue);
   LOG.info("ballingss");
    }
      /*
     * Method to read the defaults csv file and store into the common table
    */
      @Override
     //@Transactional(readOnly = false)
    public void readCSVFile(String fileLocation, Long clientJobId){
      String csvFile = fileLocation;
      BufferedReader br = null;
       String line = "";
       String cvsSplitBy = ",";

      try {
       br = new BufferedReader(new FileReader(csvFile));
       while ((line = br.readLine()) != null) {

        // use comma as separator
        String[] currentLine = line.split(cvsSplitBy);


        TestValue defaultValue = new TestValue();
        Date date = new Date();              
        defaultValue.setClient_job_id(clientJobId);
        defaultValue.setCreate_dt(date);
        defaultValue.setActive(true);
        defaultValue.setDef_keyfield(currentLine[0].toUpperCase());
        defaultValue.setDef_value(currentLine[1].toUpperCase());
        **setTestValue(defaultValue);**

     }

  } catch (FileNotFoundException e) {
     LOG.error("File Not found ");
  } catch (IOException e) {
     e.printStackTrace();
  } finally {
     if (br != null) {
        try {
           br.close();
        } catch (IOException e) {
           e.printStackTrace();
        }
     }
     }

  }




}

这是表对象:

@Entity
  @Table(name = "TEST_VALUE")
public class TestValue implements Serializable {
   private static final long serialVersionUID = 1L;

   @Id
@GeneratedValue(strategy = GenerationType.AUTO, generator = "default_values_def_id_seq")
@SequenceGenerator(name = "default_values_def_id_seq", sequenceName = "default_values_def_id_seq")    
   private Long def_id;

   private Long client_job_id;

   @Temporal(TemporalType.TIMESTAMP)
   private Date create_dt;

   @Basic
    private String def_keyfield;

   @Basic
   private String def_value;

    @Basic
   boolean active  = false;

  public Long getDef_id()
  {
     return def_id;
  }

  public void setDef_id(Long def_id)
  {
     this.def_id = def_id;
  }

  public Long getClient_job_id()
 {
     return client_job_id;
  }

   public void setClient_job_id(Long client_job_id)
  {
     this.client_job_id = client_job_id;
  }

  public Date getCreate_dt()
  {
     return create_dt;
   }

   public void setCreate_dt(Date create_dt)
   {
     this.create_dt = create_dt;
  }

  public String getDef_keyfield()
  {
     return def_keyfield;
  }

     public void setDef_keyfield(String def_keyfield)
  {
     this.def_keyfield = def_keyfield;
  }

  public String getDef_value()
  {
     return def_value;
  }

  public void setDef_value(String def_value)
 {
    this.def_value = def_value;
  }

  public boolean isActive()
  {
     return active;
  }

   public void setActive(boolean active)
  {
     this.active = active;
  }

  public static long getSerialversionuid()
  {
     return serialVersionUID;
  }



} 

Answer 1

因为你没有任何异常，所以很难知道无法将数据保存到数据库的原因是什么。我想建议您可以执行一些步骤来检查代码:

Step1: Create an instance TestValue (don't read from your csv)
Step2: Test the save method in your GenericDAO <TestValue>

如果步骤2成功，我想你可以检查你的方法从你的csv数据加载。如果Step2不成功，请仔细检查GenericDao中的保存方法

如果您有异常(exception)情况，这将是我们跟踪问题并解决问题的信息。

希望这有帮助。