Hibernate---Basic configuration log information SLF and build the log environment

SLF log interface, implemented with SLF4J NODEP, log4j

Hibernate we generally use log4j, so delete the previously created SLF4J-NOP package in the Hibernate package, add Log4j-1.2.17.jar

Now Hibernate's package has SLF API jar, cannot and log4j automatically match, so in the middle need an interface, then add slf4j-log4j package (1.5.8)

This allows you to see statements such as built-in tables when you run the interface.

The DDL statement comes out:

14:00:20,587  INFO schemaexport:179-exporting generated schema to database14:00:20,588 DEBUG Schemaexport:303-drop Table if exists teacher14:00:20,890 debug Schemaexport:303-drop table if exists student14:00:21,022 debug Schemaexport: 303-create table Teacher (ID integer NOT NULL, name varchar (255), title varchar (255), primary key (ID)) 14:00:21,309 debu G 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

　

Because the debug information is too much, only keep the database information can keep the contents of Log4j.properties only the following 2 sentences, the rest are blocked:

Log4j.rootlogger=warn, Stdoutlog4j.logger.org.hibernate.tool.hbm2ddl=debug

The last DDL log information is as follows:

14:13:24,066  INFO schemaexport:154-running hbm2ddl schema export14:13:24,068 DEBUG schemaexport:170-import file No T found:/import.sql14:13:24,068  INFO schemaexport:179-exporting generated schema to database14:13:24,069 DEBUG Sch  Emaexport:303-drop table if exists teacher14:13:24,193 DEBUG schemaexport:303-drop table if exists student14:13:24,279 DEBUG schemaexport:303-create table Teacher (ID integer NOT NULL, name varchar (255), title varchar (255), PRIMARY KEY (i d) 14:13:24,372 DEBUG schemaexport:303-create table student (ID integer NOT NULL, name varchar (255), age integer, Primar  Y key (ID)) 14:13:24,552  INFO Schemaexport:196-schema export Completehibernate:insert into Teacher (name, title, id) VALUES (?,?,?)

　　

Building the JUnit Logging environment

Create a new Myjunit package in Preferrence, add the JUnit package, and then right-click Add libary to import your myjunit into the project.

1. Create a Test code package: Project Right-click New---source Folder---Test, which contains the test code, SRC inside is the project code

2. Create a package with the same model as the one above, and then create the unit test for the testing class Teachertest.java, with the following code:

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 {@Testpublic void Testteachersave () { Teacher T =new Teacher () T.setid (4); T.setname ("WDFD"); T.settitle ("High"); Configuration cfg=new annotationconfiguration (); Sessionfactory sf=cfg.configure (). Buildsessionfactory (); The default is to find Hibernate.cfg.xml, and then produce a connection factory session session =  sf.opensession (); Session.begintransaction (); Session.save (t); Session.gettransaction (). commit (); Session.close (); Sf.close ();}}

It is time-consuming to create sessionfactory in the code above, so consider using Beforeclass and 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; @BeforeClasspublic static void Beforeclass () {sf=new Annotationconfiguration (). Configure (). Buildsessionfactory ();} @Testpublic 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 ();} @AfterClasspublic static void Afterclass () {sf.close ();}}

　　

Sometimes the test file will be faulted, untraceable, and need to be in method plus try catch:

@BeforeClasspublic static void Beforeclass () {try {sf=new annotationconfiguration (). Configure (). Buildsessionfactory ( );} catch (Hibernateexception e) {//TODO auto-generated catch Blocke.printstacktrace ();}}

Or add a main method, call Beforeclass ();

Hibernate---Basic configuration log information SLF and build the log environment