org.hibernate.exception.GenericJDBCException：無法在hibernate中執行語句

Question

我試圖使用嵌入式注釋將一個對象中的不同值存儲在一個表中。

我有兩個類：userDetails：

package org.hibernet.src;
@Entity
@Table (name="UserDetails")
 public class userDetails {
 @Id 
@GeneratedValue(strategy = GenerationType.AUTO)
private int userId;
@Temporal(TemporalType.DATE)
private Date dob;
public Date getDob() {
    return dob;
}
public void setDob(Date dob) {
    this.dob = dob;
}
private String userName;
@Embedded
private Address address;

public Address getAddress() {
    return address;
}
public void setAddress(Address address) {
    this.address = address;
}
public int getUserId() {
    return userId;
}
public void setUserId(int userId) {
    this.userId = userId;
}
public String getUserName() {
    return userName;
}
public void setUserName(String userName) {
    this.userName = userName;
}

}

2. 地址類是可嵌入的類：

     @Embeddable public class Address { @Column(nullable=true) private String street; @Column(nullable=true) private String city; @Column(nullable=true) private String state; public String getStreet() { return street; } public void setStreet(String street) { this.street = street; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getState() { return state; } public void setState(String state) { this.state = state; } 

   這是我的主要課程：

    public static void main(String[] args) { userDetails user = new userDetails(); Address add = new Address(); user.setUserName("Dipesh"); user.setDob(new Time(0)); add.setCity("vadodara"); add.setState("gujarat"); add.setStreet("raopura"); SessionFactory sessionfactory = new Configuration().configure().buildSessionFactory(); Session session = sessionfactory.openSession(); session.beginTransaction(); session.save(user); session.save(add); /*user = (userDetails)session.get(userDetails.class, 6);*/ session.getTransaction().commit(); session.close(); 

   }

我試圖存儲數據，但顯示如下：

   ERROR: Field 'pincode' doesn't have a default value
   Exception in thread "main" org.hibernate.exception.GenericJDBCException:    
    could not execute statement

      at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:211)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3558)
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:490)
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:195)
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:179)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:214)
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)
at org.hibernate.test.userTest.main(userTest.java:36)
Caused by: java.sql.SQLException: Field 'pincode' doesn't have a default    
value
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1056)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3376)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3308)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1837)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1961)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2543)
at     
    com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1737)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2022)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1940)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1925)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)
... 22 more

我在地址中輸入了密碼，但它顯示了錯誤，因此我刪除了它，但仍然顯示該錯誤。

請幫我解決一下。

Answer 1

數據庫中的表有一個字段密碼，您沒有為其定義默認值且不可為空。 但是，您的實體沒有該字段的映射，並且您沒有為此字段發送值。 因此， java.sql.SQLException：字段'pincode'沒有默認值
值

Answer 2

1）調整您的實體，包括字段“pincode”

@Entity
@Table (name="UserDetails")
public class userDetails {
...
@Column(name="pincode", columnDefinition="Number(10) default '34562'")
int pincode;
...

2）或更改基礎表，以便pincode字段具有默認值：

 ALTER TABLE user_details MODIFY pincode NUMBER(10) NULL DEFAULT NULL;

僅選擇數字（10）作為示例。 用可變類型的pincode替換它。

Answer 3

我有與org.hibernate.exception.GenericJDBCException相同的錯誤：無法執行語句我忘記初始化會話工廠。

初始化（如下）會話工廠解決了我的問題。

@Autowired
private SessionFactory sessionFactory;

public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
}