hibernate-Basic introduction case, adding and deleting

Project structure:

Database:

/*sqlyog Ultimate v12.09 (+ bit) mysql-5.5.53:database-hibernate01************************************************ *!40101 set NAMES UTF8 */;/*!40101 set sql_mode= ' */;/*!40014 set @[email protected]@ Unique_checks, unique_checks=0 */;/*!40014 SET @[email protected] @FOREIGN_KEY_CHECKS, foreign_key_checks=0 */;/ *!40101 set @[email protected] @SQL_MODE, sql_mode= ' No_auto_value_on_zero ' */;/*!40111 set @[email  Protected] @SQL_NOTES, sql_notes=0 */; CREATE DATABASE/*!32312 IF not exists*/' hibernate01 '/*!40100 DEFAULT CHARACTER SET UTF8 */; Use ' hibernate01 ',/*table structure for table ' customer ' */drop Table IF EXISTS ' customer '; CREATE TABLE ' customer ' (' id ' int (one) ' NOT null auto_increment, ' name ' varchar (+) Default NULL, ' age ' int (one) ' Default NULL, PRIMARY KEY (' id ')) engine=innodb auto_increment=5 DEFAULT charset=utf8;/*data for the table ' customer ' */insert i Nto ' Customer ' (' id ', ' name ', ' age ') VALUES (1, ' Zhang San ', 20), (2, ' Harry ', 22), (3, ' Zhao Liu ', 29);/*!40101 Set [Email protected]_sql_mode */;/*!40014 set [Email protected]_foreign_key_checks */;/*!40014 Set [Email protected]_unique_checks */;/*!40111 Set [email protected]_sql_notes */;

The jar package used:

1. Import Hibernate core must pack (\lib\required)

2. Import the MySQL driver package

3. Import log4j Log Package

Project Code:

Com.gordon.domain:

--customer.java

Package Com.gordon.domain;public class Customer {private Integer id;private String name;private integer age;public intege R 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 Integer Getage () {return age;} public void Setage (Integer age) {this.age = age;} @Overridepublic String toString () {return "Customer [id=" + ID + ", name=" + name + ", age=" + Age + ", getId () =" + GetId (  ) + ", getName () =" + getName () + ", getage () =" + getage () + ", getclass () =" + getclass () + ", hashcode () =" + hashcode () + ", ToString () = "+ super.tostring () +"] ";}}

--customer.hbm.xml

<?xml version= "1.0" encoding= "UTF-8"? ><! DOCTYPE hibernate-mapping public     "-//hibernate/hibernate mapping DTD 3.0//en"    "Http://www.hibernate.org/dtd /hibernate-mapping-3.0.dtd ">
*hibernate Delete/update, to first based on the ID or the corresponding field query data, in order to update or remove the data through the Update/delete method, their own construction of the object input operation will be error.
Com.gordon.test:* Test to import the JUNIT4 test package, then you can double-click on the method to select the method name, right-click runas run in JUnit. 
--testhibernate.java
Package Com.gordon.test;import Java.util.list;import Org.hibernate.query;import org.hibernate.session;import Org.hibernate.sessionfactory;import Org.hibernate.transaction;import Org.hibernate.cfg.configuration;import Org.junit.test;import Com.gordon.domain.customer;import Com.gordon.utils.hibernateutil;public class TestHibernate { /** * Stores a data */@Testpublic void Testsave () {Configuration configuration = new configuration (). Configure (); Sessionfactory sessionfactory = Configuration.buildsessionfactory (); Session session = Sessionfactory.opensession (); Transaction tr = session.begintransaction (); Customer customer = new Customer (); Customer.setname ("test"); customer.setage; try {session.save (customer); tr.commit ();} catch (Exception e) {tr.rollback (); E.printstacktrace ();} Session.close ();} /** * Delete a data */@Testpublic void Testdelete () {Configuration configuration = new configuration (). Configure (); Sessionfactory sessionfactory = Configuration.buildsessionfactory (); Session session = SESSIONFACTORY.OPensession (); Transaction tr = session.begintransaction (); Customer customer = null;try {customer = Session.get (Customer.class, 4); Session.delete (customer); Tr.commit ();} catch ( Exception e) {tr.rollback (); E.printstacktrace ();} Session.close ();} /** * Modify a data */@Testpublic void Testupdate () {Configuration configuration = new configuration (). Configure (); Sessionfactory sessionfactory = Configuration.buildsessionfactory (); Session session = Sessionfactory.opensession (); Transaction tr = session.begintransaction (); Customer customer = null;try {customer = Session.get (Customer.class, 1); Customer.setname ("Jack"); Session.update ( customer); Tr.commit ();} catch (Exception e) {tr.rollback (); E.printstacktrace ();} Session.close ();} /** * Get multiple data, query can not use transaction */@SuppressWarnings ("unchecked") @Testpublic void Testgetall () {Session session = Hibernateutil.getsession (); List<customer> customers = null;try {query query = Session.createquery ("from Customer"); customers = Query.list ();} catch (Exception e) {E.printstaCktrace ();} Session.close (); for (customer customer:customers) {System.out.println (customer);}} /** * Gets a piece of data, the query can not use the transaction */@Testpublic void Testget () {Session session = Hibernateutil.getsession (); Customer customer = null;try {customer = Session.get (Customer.class, 1);} catch (Exception e) {e.printstacktrace ();} Session.close (); SYSTEM.OUT.PRINTLN (Customer);}}
Com.gordon.utils:
--hibernate.util.java
Package Com.gordon.utils;import Org.hibernate.session;import Org.hibernate.sessionfactory;import Org.hibernate.cfg.configuration;public class Hibernateutil {private static final Configuration configuration;private Static final Sessionfactory sessionfactory;static {configuration = new configuration (). Configure (); Sessionfactory = Configuration.buildsessionfactory ();}; public static Session GetSession () {return sessionfactory.opensession ();}}
Hibernate.cfg.xml:
<?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-Basic introduction case, adding and deleting