您现在的位置：Java基础知识：Hibernate本地SQL查询
下面通过例子来理解本地SQL。
例子：查询用户和租房的信息
1.配置文件
hibernate.cfg.xml
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="connection.url">jdbc:oracle:thin:@OWEYOJ5DU7AAHZZ:1521:ORCL</property>
<property name="ername">jbit</property>
<property name="connection.password">bdqn</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.OracleDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<!-- <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> -->
<!-- Echo all executed SQL to stdout --> <property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>
<mapping resource="cn/jbit/hibernate/entity/User.hbm.xml" />
<mapping resource="cn/jbit/hibernate/entity/House.hbm.xml" />
<mapping resource="cn/jbit/hibernate/entity/Street.hbm.xml" />
<mapping resource="cn/jbit/hibernate/entity/Type.hbm.xml" />
<mapping resource="cn/jbit/hibernate/entity/District.hbm.xml" />
</session-factory>
</hibernate-configuration>
2.hibernate工具类
HibernateUtil.java
package cn.jbit.hibernate.util;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.nfiguration;
/*
* hibernate工具类
*/
public class HibernateUtil {
private static Configuration configuration;
private static final SessionFactory sessionFactory;
static{
try { configuration=new Configuration();
nfigure();
sessionFactory=configuration.buildSessionFactory();
}
catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public Session getSession() throws HibernateException{
return getSessionFactory().getCurrentSession();
}
}
实体类
User,java
package cn.jbit.hibernate.entity;
import java.util.Set;
public class User implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private Integer id;
private String name;
private String password;
private String telephone;
private String username;
private String isadmin;
private Set<House> house; //get&set方法
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
ername = username;
}
public String getIsadmin() {
return isadmin;
}
public void setIsadmin(String isadmin) {
this.isadmin = isadmin;
}
public Set<House> getHouse() {
return house;
} public void setHouse(Set<House> house) {
this.house = house;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
}
实体类
House.java
package cn.jbit.hibernate.entity;
import java.util.Date;
public class House {
private Integer id;
private Integer type_id;
private Integer user_id;
private Integer street_id;
private String description;
private Date date
