1.使用Hibernate进行增删改查（假设你已经导入相关jar包）

2.配置hibernate.cfg.xml文件(放在src根目录下面)

<?xml version="1.0" encoding="UTF-8"?>

    
  <!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
<session-factory>
<!--数据库驱动-->
    <property        name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <!--password-->
    <property name="hibernate.connection.password">root</property>
    <!--url-->
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/my</property>
    <!--username-->
    <property name="hibernate.connection.username">root</property>
    <!--dialect-->
    <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
    <!-- 不使用注解，关联实体类 -->
    <mapping resource="hy_people/entity/People.hbm.xml"/>
    <!-- 使用注解  -->
    <mapping class="hy_people.entity.Provinces"/>
    <mapping class="hy_people.entity.Citys"/>
    <mapping class="hy_stu_score.Coustomer"/>
    <mapping class="hy_stu_score.Score"/>
    <mapping class="hy_stu_score.Student"/>
</session-factory>
    </hibernate-configuration>

3.配置People.hbm.xml文件(放在POJO包下面)

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2017-8-4 15:04:28 by Hibernate Tools 3.5.0.Final -->
<hibernate-mapping>
<class name="hy_people.entity.People" table="PEOPLE">
    <id name="id" type="int">
        <column name="ID" />
        <generator class="assigned" />
    </id>
    <property name="name" type="java.lang.String">
        <column name="NAME" />
    </property>
    <property name="age" type="int">
        <column name="AGE" />
    </property>
    <property name="address" type="java.lang.String">
        <column name="ADDRESS" />
    </property>
</class>
</hibernate-mapping>

4.POJO层

public class People {
private String name;
private int age;
private String address;
private int id;

public People() {

}

public People(String name, int age, String address) { super(); this.name = name; this.age = age; this.address = address; }

public String getName() { return name; }

public void setName(String name) { this.name = name; }

public int getAge() { return age; }

public void setAge(int age) { this.age = age; }

public String getAddress() { return address; }

public void setAddress(String address) { this.address = address; }

public int getId() { return id; }

public void setId(int id) { this.id = id; }

}

5.Dao层

public Integer addPeople(String name,int age,String address){
     Session session = factory.openSession();
     Transaction tx = null;
     Integer num = null;
     tx = session.beginTransaction();
     People p = new People(name,age,address);
     num = (Integer)session.save(p);
     tx.commit();
     return num;
 }

 

 
 private void updatePeople(String name,int id){
      Session session = factory.openSession();
      Transaction tx = null;
      tx = session.beginTransaction();
      //id为表的主键
      People p = (People) session.get(People.class, id);
      p.setName(name);
      session.update(p);
      tx.commit();
      session.close();
 }

 
 private void deletedpeople(int id){
     Session session = factory.openSession();
     Transaction tx = null;
     tx = session.beginTransaction();
     People p = (People)
     //id为表的主键
     session.get(People.class, id);
     session.delete(p);
     tx.commit();
     session.close();

     
 }

 
 private List selectPople(){
     List list = new ArrayList();
     Session session = factory.openSession();
     Transaction tx = null;
     tx = session.beginTransaction(); 
     String hql = "from People";
     Query query = session.createQuery(hql);
     list = query.list();
     tx.commit();
     return list;
 }