接上篇文章（点击打开链接），给出Hibernate注解配置持久化类的步骤：
一、同样配置Hibernate.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory > <!-- mysql数据库驱动 --> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <!-- mysql数据库名称 --> <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/world</property> <!-- 数据库的登陆用户名 --> <property name="hibernate.connection.username">root</property> <!-- 数据库的登陆密码 --> <property name="hibernate.connection.password">1988419</property> <!-- 配置方言为每一种数据库提供特殊sql适配--> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <!-- c3p0连接池配置 --> <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property> <!-- 连接池最大连接 --> <property name="hibernate.c3p0.max_size">10</property> <!-- 连接池最小连接 --> <property name="hibernate.c3p0.min_size">1</property> <!-- 连接池超时时长（毫秒） --> <property name="hibernate.c3p0.timeout">5000</property> <!-- 指定连接池最大缓存多少Statment对象 --> <property name="hibernate.c3p0.max_statment">50</property> <!-- 空闲检测周期（毫秒） --> <property name="hibernate.c3p0.idle_test_period">3000</property> <!-- 连接池一次增加的连接数 --> <property name="hibernate.c3p0.acquire_increment">5</property> <!-- 每次都验证连接是否可用 --> <property name="hibernate.c3p0.validate">true</property> <!-- 是否在控制台输出sql语句 --> <property name="hibernate.show_sql">true</property> <!-- 使用xml配置时，指定持久化类xml的路径 --> <!-- <mapping resource="org/lcwben/Student.hbm.xml"></mapping> --> <!-- 使用注解持久化类配置时，指定持久化类.java文件配置 --> <mapping class="org.lcwben.Student" /> </session-factory> </hibernate-configuration>二、建立持久化类： import java.util.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.Table; import org.hibernate.annotations.GenericGenerator; //注意：所有的注解均使用jpa规范 @Entity @Table(name="test_stu") public class Student { @Id //uid作为主键 @GenericGenerator(name = "generator", strategy = "increment") //自增选项 @GeneratedValue(generator="generator") private Integer uid; private String uname; private Date regtime; private Integer status; private Integer score; private Integer classes; //所有成员变量的getter与setter public Integer getUid() { return uid; } public void setUid(Integer uid) { this.uid = uid; } public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } public Date getRegtime() { return regtime; } public void setRegtime(Date regtime) { this.regtime = regtime; } public Integer getStatus() { return status; } public void setStatus(Integer status) { this.status = status; } public Integer getScore() { return score; } public void setScore(Integer score) { this.score = score; } public Integer getClasses() { return classes; } public void setClasses(Integer classes) { this.classes = classes; } } 三、JUnit测试： import java.util.List; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistry; import org.hibernate.service.ServiceRegistryBuilder; import org.junit.Test; public class Client { private static SessionFactory sf; static { Configuration cfg = new Configuration().configure(); ServiceRegistry sr = new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry(); sf = cfg.buildSessionFactory(sr); } @Test public void testSelectAll() { Configuration cfg = new Configuration().configure(); ServiceRegistry sr = new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry(); SessionFactory sf = cfg.buildSessionFactory(sr); Session sess = null; try { sess = sf.openSession(); String hql = "from Student"; Query qy = sess.createQuery(hql); List<Student> stus = qy.list(); for (Student stu : stus) { System.out.println(stu.getUid()+" "+stu.getUname()+" "+stu.getRegtime()+" "+stu.getStatus()+" "+stu.getScore()+" "+stu.getClasses()); } } catch (Exception e) { e.printStackTrace(); } finally { if(sess!=null) { sess.close(); } } } } 结果如下： 三月 08, 2017 3:05:22 下午 org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService INFO: HHH000399: Using default transaction strategy (direct JDBC transactions) 三月 08, 2017 3:05:22 下午 org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init> INFO: HHH000397: Using ASTQueryTranslatorFactory Hibernate: select student0_.uid as uid1_0_, student0_.classes as classes2_0_, student0_.regtime as regtime3_0_, student0_.score as score4_0_, student0_.status as status5_0_, student0_.uname as uname6_0_ from test_stu student0_ 1 lcwben1 2017-01-18 0 60 1 2 lcwben2 2017-01-18 1 67 1 3 lcwben3 2017-01-19 1 51 3 4 benhbm2 2017-01-19 0 78 3 5 lcwben5 2017-01-19 0 80 3 6 lcwben6 2017-01-22 1 97 2 7 lcwben7 2017-01-23 0 73 1 8 lcwben8 2017-01-25 1 48 2 9 lcwben9 2017-01-28 1 100 3 10 lcwben10 2017-01-31 0 92 3
