Hibernate学习11——Hibernate 高级配置

@Test
    public void testSQLQuery(){
        String sql = "select * from t_student";
        Query query = session.createSQLQuery(sql).addEntity(Student.class);    //查询student，绑定Student实体
        List<Student> studentList = query.list();
        for(Student s: studentList){
            System.out.println(s);
        }
    }

<?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>

        <!--数据库连接设置 -->
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property>
        <property name="connection.username">root</property>
        <property name="connection.password">root</property>
       
        <!-- 方言 -->
        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
    
        <!-- 控制台显示SQL -->
        <property name="show_sql">true</property>

        <!-- 自动更新表结构 -->
        <property name="hbm2ddl.auto">update</property>
        
        <!-- 最小连接数 --> 
         <property name="c3p0.min_size">7</property> 
         <!-- 最大连接数 -->   
         <property name="c3p0.max_size">42</property> 
         <!-- 获得连接的超时时间,如果超过这个时间,会抛出异常，单位毫秒 -->  
         <property name="c3p0.timeout">1800</property> 
         <!-- 最大的PreparedStatement的数量 -->   
         <property name="c3p0.max_statements">50</property> 
        
        <mapping resource="com/cy/model/Student.hbm.xml"/>
    </session-factory>

</hibernate-configuration>

log4j.rootLogger=debug,appender1,appender2

log4j.appender.appender1=org.apache.log4j.ConsoleAppender 

log4j.appender.appender2=org.apache.log4j.FileAppender 
log4j.appender.appender2.File=D:/logFile.txt
 
log4j.appender.appender1.layout=org.apache.log4j.TTCCLayout
log4j.appender.appender2.layout=org.apache.log4j.TTCCLayout  

package com.cy.service;

import java.util.List;
import org.apache.log4j.Logger;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.cy.model.Student;
import com.cy.util.HibernateUtil;

public class StudentTest {

    private SessionFactory sessionFactory=HibernateUtil.getSessionFactory();
    private Session session;
    private Logger logger = Logger.getLogger(StudentTest.class);
    
    @Before
    public void setUp() throws Exception {
        session=sessionFactory.openSession(); 
        session.beginTransaction();
    }

    @After
    public void tearDown() throws Exception {
         session.getTransaction().commit();
         session.close();
    }
    
    @Test
    public void testSQLQuery(){
        String sql = "select * from t_student";
        Query query = session.createSQLQuery(sql).addEntity(Student.class);    //查询student，绑定Student实体
        List<Student> studentList = query.list();
        for(Student s: studentList){
            System.out.println(s);
        }
        
        logger.debug("这是一个debug信息");
        logger.info("这是一个info信息");
        logger.error("这是一个error信息");
    }

}