DROP TABLE IF EXISTS role;CREATE TABLE IF NOT EXISTS `role`(`id` INT(11) NOT NULL AUTO_INCREMENT,`rolename` VARCHAR(20) DEFAULT NULL,`note` VARCHAR(100) DEFAULT NULL,PRIMARY KEY  (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
INSERT INTO role VALUES(NULL,'管理员','admin');
INSERT INTO role VALUES(NULL,'用户','user');

        <!-- hibernate core --><dependency><groupId>org.hibernate</groupId><artifactId>hibernate</artifactId><version>3.2.1.ga</version></dependency><!-- database mysql --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.18</version></dependency>

<?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><property name="dialect">org.hibernate.dialect.MySQLDialect</property><property name="connection.url">jdbc:mysql://localhost:3306/mysql</property><property name="connection.username">root</property><property name="connection.password">mysql</property><property name="connection.driver_class">com.mysql.jdbc.Driver</property><property name="myeclipse.connection.profile">mysql</property><mapping resource="com/yan/pojo/Role.hbm.xml" /></session-factory></hibernate-configuration>

public class Role {private Integer id;private String rolename;private String note;// Constructors/** default constructor */public Role() {}/** minimal constructor */public Role(Integer id) {this.id = id;}/** full constructor */public Role(Integer id, String rolename, String note) {this.id = id;this.rolename = rolename;this.note = note;}// Property accessorspublic Integer getId() {return this.id;}public void setId(Integer id) {this.id = id;}public String getRolename() {return this.rolename;}public void setRolename(String rolename) {this.rolename = rolename;}public String getNote() {return this.note;}public void setNote(String note) {this.note = note;}}

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping><class name="com.yan.pojo.Role" table="role" catalog="mysql"><id name="id" type="java.lang.Integer"><column name="id" /><generator class="assigned" /></id><property name="rolename" type="java.lang.String"><column name="rolename" length="20" /></property><property name="note" type="java.lang.String"><column name="note" length="100" /></property></class>
</hibernate-mapping>

public static void main(String[] args) {Session session=new Configuration().configure().buildSessionFactory().openSession();String hql="from Role";Query query=session.createQuery(hql);@SuppressWarnings("unchecked")List<Role> list=query.list();System.out.println("角色编号"+"\t\t"+"角色姓名");for(Role role:list){System.out.println(role.getId()+"\t\t"+role.getRolename());}}