首先要創建實體類 Student.java

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package star.july.a_session; public class Student {private int id;private String name;private String gender;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getGender() {return gender;}public void setGender(String gender) {this.gender = gender;}@Overridepublic String toString() {return "Student [id=" + id + ", name=" + name + ", gender=" + gender+ "]";}}

然后配置xml：Student.hbm.xml

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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC"-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping><class name="star.july.a_session.Student" table="t_user"><id name="id" column="id"><generator class="native"></generator></id><property name="name" column="name"></property><property name="gender" column="gender"></property></class></hibernate-mapping>

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最后是四種操作方式： package star.july.a_session; import java.util.List; import org.hibernate.Session; import org.hibernate.Transaction; import org.junit.Test; import star.july.util.HibernateUtil; public class Demo {//增加@Testpublic void test(){Session session = HibernateUtil.getSession();Transaction ts = session.getTransaction();try{//開啟事務ts.begin();Student s = new Student();// s.setId(1);s.setName("楊光");s.setGender("男");session.save(s);ts.commit();}catch(Exception e){e.printStackTrace();ts.rollback();}}//修改@Testpublic void test2(){Session session = HibernateUtil.getSession();Transaction ts = session.getTransaction();try{//開啟事務ts.begin();/*Student s = new Student();s.setId(1);s.setName("小紅");s.setGender("女");*///方式一： // session.update(s);//方式二：/*** 參數* class：要查詢的實體類的class* Serializable：要查詢的對象的主鍵號*///先查詢Student stu = (Student)session.get(Student.class, 2);//再修改stu.setGender("女");//不需要調用update方法System.out.println(stu); //輸出：Student [id=2, name=小年, gender=女]ts.commit();}catch(Exception e){e.printStackTrace();ts.rollback();}}//刪除@Testpublic void test3(){Session session = HibernateUtil.getSession();Transaction ts = session.getTransaction();try{//開啟事務ts.begin();//方式一/* Student s = new Student();s.setId(2);session.delete(s);*///方式二//先查詢再刪除Student stu = (Student)session.get(Student.class, 3);if(stu!= null ){session.delete(stu);}//提交事務ts.commit();}catch(Exception e){e.printStackTrace();ts.rollback();}}//查詢@Testpublic void test4(){Session session = HibernateUtil.getSession();Transaction ts = session.getTransaction();try{//開啟事務ts.begin();//查詢一個//參數一：查詢的類型//參數二：查詢的id// Student stu = (Student)session.get(Student.class, 3);// System.out.println(stu);//查詢多個List<Student> list = session.createQuery("from Student").list();for(Student s : list){System.out.println(s);}//提交事務ts.commit();}catch(Exception e){e.printStackTrace();ts.rollback();}} }

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