以下部分显示如何将java.util.Calendar映射到数据库日期类型。

@Temporal(TemporalType.DATE)

private java.util.Calendar dob;

例子

下面的代码来自Person.java。

package cn.w3cschool.common;

import javax.persistence.Entity;

import javax.persistence.Id;

import javax.persistence.Temporal;

import javax.persistence.TemporalType;

@Entity

public class Person {

@Id

private long id;

private String name;

@Temporal(TemporalType.DATE)

private java.util.Calendar dob;

public Person() {}

public Person(String name) {

this.name = name;

}

public java.util.Calendar getDob() {

return dob;

}

public void setDob(java.util.Calendar dob) {

this.dob = dob;

}

public Long getId() {

return id;

}

public void setId(Long id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String toString() {

return "ID:" + id + "Name:" + name + ""+"Dob"+dob;

}

}

下面的代码来自PersonDaoImpl.java。

package cn.w3cschool.common;

import java.util.Calendar;

import java.util.List;

import javax.persistence.EntityManager;

import javax.persistence.PersistenceContext;

import org.springframework.transaction.annotation.Transactional;

@Transactional

public class PersonDaoImpl {

public void test(){

Person p1 = new Person("Tom");

p1.setId(1L);

p1.setDob(Calendar.getInstance());

Person p2 = new Person("Jack");

p2.setId(2L);

save(p1);

save(p2);

listAll();

}

private void listAll(){

List persons = getAll();

for (Person person : persons) {

System.out.println(person);

}

}

@PersistenceContext

private EntityManager em;

public Long save(Person person) {

em.persist(person);

return person.getId();

}

public ListgetAll() {

return em.createQuery("SELECT p FROM Person p