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slf日志接口, 实现有slf4j nodep, log4j
hibernate里我们一般用 log4j,所以删除之前创建的hibernate 包里的 slf4j-nop包, 加入log4j-1.2.17.jar
现在hibernate的包里有slf的api 的jar, 不能和log4j 自动匹配, 所以中间需要一个接口, 再加入 slf4j-log4j 的包 (1.5.8)
这样在运行界面就可以看到有建表等语句.
ddl语句就出来了:
14:00:20,587 INFO SchemaExport:179 - exporting generated schema to database 14:00:20,588 DEBUG SchemaExport:303 - drop table if exists Teacher 14:00:20,890 DEBUG SchemaExport:303 - drop table if exists student 14:00:21,022 DEBUG SchemaExport:303 - create table Teacher (id integer not null, name varchar(255), title varchar(255), primary key (id)) 14:00:21,309 DEBUG SchemaExport:303 - create table student (id integer not null, name varchar(255), age integer, primary key (id)) 14:00:21,530 INFO SchemaExport:196 - schema export complete
因为debug信息太多, 只保留数据库信息可以将log4j.properties里的内容只保留下面2句, 其余都屏蔽:
log4j.rootLogger=warn, stdout log4j.logger.org.hibernate.tool.hbm2ddl=debug
最后ddl日志信息如下:
14:13:24,066 INFO SchemaExport:154 - Running hbm2ddl schema export 14:13:24,068 DEBUG SchemaExport:170 - import file not found: /import.sql 14:13:24,068 INFO SchemaExport:179 - exporting generated schema to database 14:13:24,069 DEBUG SchemaExport:303 - drop table if exists Teacher 14:13:24,193 DEBUG SchemaExport:303 - drop table if exists student 14:13:24,279 DEBUG SchemaExport:303 - create table Teacher (id integer not null, name varchar(255), title varchar(255), primary key (id)) 14:13:24,372 DEBUG SchemaExport:303 - create table student (id integer not null, name varchar(255), age integer, primary key (id)) 14:13:24,552 INFO SchemaExport:196 - schema export complete Hibernate: insert into Teacher (name, title, id) values (?, ?, ?)
搭建junit日志环境
preferrence里新建MyJUnit包, 加入junit包, 然后再项目右键add libary把自己的MyJUnit导入进项目.
1. 创建测试代码包: 项目右键 new --- source folder---test, 里面装测试代码, src里面都是项目代码
2. 给test创建一个和上面model一样的package, 然后创建测试类 TeacherTest.java的unit test, 代码如下:
package com.bjsxt.hibernate.model;
import static org.junit.Assert.*;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;
import org.junit.Test;
public class TeacherTest {
@Test
public void testTeacherSave() {
Teacher t =new Teacher();
t.setId(4);
t.setName("wdfd");
t.setTitle("high");
Configuration cfg=new AnnotationConfiguration();
SessionFactory sf=cfg.configure().buildSessionFactory(); //默认找hibernate.cfg.xml,然后产生一个connection工厂
Session session = sf.openSession();
session.beginTransaction();
session.save(t);
session.getTransaction().commit();
session.close();
sf.close();
}
}
上面代码中每次创建sessionFactory比较费时, 所以考虑用beforeclass和afterclass:
package com.bjsxt.hibernate.model;
import static org.junit.Assert.*;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
public class TeacherTest {
private static SessionFactory sf=null;
@BeforeClass
public static void beforeClass(){
sf=new AnnotationConfiguration().configure().buildSessionFactory();
}
@Test
public void testTeacherSave() {
Teacher t =new Teacher();
t.setId(4);
t.setName("wdfd");
t.setTitle("high");
Session session = sf.openSession();
session.beginTransaction();
session.save(t);
session.getTransaction().commit();
session.close();
sf.close();
}
@AfterClass
public static void afterClass(){
sf.close();
}
}
有时test文件会出错, 无法追踪, 需要在 方法加try catch:
@BeforeClass
public static void beforeClass(){
try {
sf=new AnnotationConfiguration().configure().buildSessionFactory();
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
或者加一个main方法, 调用beforeClass();
Hibernate---基础配置之日志信息slf 及搭建日志环境
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原文地址：http://www.cnblogs.com/wujixing/p/5408410.html
