6
我想在Hibernate中使用session.saveOrUpdate（）方法更新錶行。休眠saveOrUpdate不更新
但是，它無法更新該行並嘗試通過生成插入語句來保存該行。由於我的數據庫中有一些不可空字段，此插入不起作用。
我能夠檢索要保存在DAO層的對象的Id，所以我無法理解它爲什麼不只是更新數據庫表中的相應行。
Bean類：（BaseEntityBean具有的Id，CreatedBy等）
public class EmployeeMasterBean extends BaseEntityBean {
/**
*
*/
private static final long serialVersionUID = 1L;
@Column(name = "FirstName", nullable = false)
private String firstName;
@Column(name = "LastName", nullable = false)
private String lastName;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "Dob", insertable = true, updatable = true, nullable = false)
private Date dateOfBirth;
@Column(name = "Email", length = 100)
private String email;
@Column(name = "PhoneNumber", nullable = false)
private String phoneNumber;
@Column(name = "Address1", nullable = false)
private String address1;
@Column(name = "Type", nullable = false)
private Short employeeType;
@Column(name = "Gender", nullable = false)
private Short gender;
/**
* @return the firstName
*/
public final String getFirstName() {
return firstName;
}
/**
* @param firstName the firstName to set
*/
public final void setFirstName(String firstName) {
this.firstName = firstName;
}
/**
* @return the lastName
*/
public final String getLastName() {
return lastName;
}
/**
* @param lastName the lastName to set
*/
public final void setLastName(String lastName) {
this.lastName = lastName;
}
/**
* @return the dateOfBirth
*/
public final Date getDateOfBirth() {
return dateOfBirth;
}
/**
* @param dateOfBirth the dateOfBirth to set
*/
public final void setDateOfBirth(Date dateOfBirth) {
this.dateOfBirth = dateOfBirth;
}
/**
* @return the email
*/
public final String getEmail() {
return email;
}
/**
* @param email the email to set
*/
public final void setEmail(String email) {
this.email = email;
}
/**
* @return the phoneNumber
*/
public final String getPhoneNumber() {
return phoneNumber;
}
/**
* @param phoneNumber the phoneNumber to set
*/
public final void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
/**
* @return the address1
*/
public final String getAddress1() {
return address1;
}
/**
* @param address1 the address1 to set
*/
public final void setAddress1(String address1) {
this.address1 = address1;
}
/**
* @return the employeeType
*/
public final Short getEmployeeType() {
return employeeType;
}
/**
* @param employeeType the employeeType to set
*/
public final void setEmployeeType(Short employeeType) {
this.employeeType = employeeType;
}
/**
* @return the gender
*/
public final Short getGender() {
return gender;
}
/**
* @param gender the gender to set
*/
public final void setGender(Short gender) {
this.gender = gender;
}
}
DAO方法：
public EmployeeMasterBean saveOrUpdateEmployee(EmployeeMasterBean employeeMasterBean) throws Exception{
Session session = null;
Transaction tx = null;
try {
session = HibernateUtil.getSessionFactory().openSession();
tx = session.beginTransaction();
session.saveOrUpdate(employeeMasterBean);
tx.commit();
} finally {
session.close();
}
return employeeMasterBean;
}
拋出Eclipse調試器的例外是：
could not insert: [com.indven.gpil.hrd.entity.EmployeeMasterBean]
com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'CreatedBy' cannot be null
'employeeMasterBean.id' null？ – mabbas
'employeeMasterBean'已創建設置？ – Ved
聽起來就像傳遞了一個分離的實體;） – Thomas