Sping to hibernate for transaction management--annotation

1. Userservicetest.java:

Package Com.bjsxt.service;import Org.junit.test;import Org.springframework.context.applicationcontext;import Org.springframework.context.support.classpathxmlapplicationcontext;import com.bjsxt.model.user;//dependency Injection//inverse of Controlpublic class Userservicetest {@Test public void Testadd () throws Exception {CLASSPATHXMLAPPL Icationcontext CTX = new Classpathxmlapplicationcontext ("Beans.xml"); UserService service = (userservice) ctx.getbean ("UserService"); System.out.println (Service.getclass ()); User User=new User (); User.setname ("Zhangsdddn"); Service.add (user); Ctx.destroy ();}}

2. SRC under Beas.xml: Note the introduction of TX, Properties->xml Catalog, introducing spring-tx-2.5.xsd

<?xml version= "1.0" encoding= "UTF-8"? ><beans xmlns= "Http://www.springframework.org/schema/beans" xmlns: Xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns:context= "Http://www.springframework.org/schema/context" xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP" xmlns:tx= "Http://www.springframework.org/schema/tx" xsi: schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring- Beans-2.5.xsd Http://www.springframework.org/schema/context Http://www.springframework.org/schema/cont Ext/spring-context-2.5.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP HTTP://WWW.SPRINGFRAMEWORK.ORG/SC Hema/aop/spring-aop-2.5.xsd Http://www.springframework.org/schema/tx http://www.springframework.org/s Chema/tx/spring-tx-2.5.xsd "><context:annotation-config/><context:component-scan base-package=" Com.bjsxt "/>
<!--<bean id= "DataSource" class= "Org.apache.commons.dbcp.BasicDataSource" destroy-method= "Close" >< Property Name= "Driverclassname" value= "Com.mysql.jdbc.Driver"/><property name= "url" value= "jdbc:mysql:// Localhost:3306/spring "/><property name=" username "value=" root "/><property name=" password "value=" BJSXT "/></bean>--><beanclass=" Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer "><property name=" Locations "><value>classpath:jdbc.properties</value></property>< /bean><bean id= "DataSource" destroy-method= "Close" class= "Org.apache.commons.dbcp.BasicDataSource" >< Property Name= "Driverclassname" value= "${jdbc.driverclassname}"/><property name= "url" value= "${jdbc.url}"/ ><property name= "username" value= "${jdbc.username}"/><property name= "password" value= "${jdbc.password} "/></bean><bean id=" sessionfactory "class=" org.springframework.orm.hibernate3.annotation.AnNotationsessionfactorybean "><property name=" DataSource "ref=" DataSource "/><property name=" Annotatedclasses "><list><value>com.bjsxt.model.User</value><value> Com.bjsxt.model.log</value></list></property><property name= "HibernateProperties" >< Props><prop key= "Hibernate.dialect" >org.hibernate.dialect.mysqldialect</prop><prop key= " Hibernate.show_sql ">true</prop></props></property></bean><bean id=" TxManager " class= "Org.springframework.orm.hibernate3.HibernateTransactionManager" ><property name= "sessionfactory" ref = "Sessionfactory"/></bean><tx:annotation-driven transaction-manager= "TxManager"/></beans>

3. SRC under Jdbc.properties

Jdbc.driverclassname=com.mysql.jdbc.driverjdbc.url=jdbc:mysql://localhost:3306/springjdbc.username= rootjdbc.password=linda0213

4. Userservice.java:

Add a business logic log, if you add a user error, then log also to ensure rollback, so through the Add method in Beans.xml and Userservice.java to join the @transactional, for unified transaction management

Transactional has a property propagation, which is an enum, the default value is required,

@Transactional (propagation=propagation. REQUIRED)

Package Com.bjsxt.service;import Javax.annotation.resource;import Org.springframework.stereotype.component;import Org.springframework.transaction.annotation.propagation;import Org.springframework.transaction.annotation.transactional;import Com.bjsxt.dao.logdao;import Com.bjsxt.dao.userdao;import Com.bjsxt.model.log;import Com.bjsxt.model.User, @Component ("UserService") public Class UserService {private Userdao userdao;private Logdao logdao;public void init () {System.out.println ("init");} Public User getUser (int id) {return null;}
@Transactionalpublic void Add (user user) {userdao.save (user); Log log = new log (); Log.setmsg ("A user saved!"); Logdao.save (log);} Public Userdao Getuserdao () {return userdao;} @Resource (name= "U") public void Setuserdao (Userdao userdao) {This.userdao = Userdao;} Public Logdao Getlogdao () {return logdao;} @Resourcepublic void Setlogdao (Logdao logdao) {This.logdao = Logdao;} public void Destroy () {System.out.println ("destroy");}}

Userdaoimpl.java:

Remove transaction processing from Save

Package Com.bjsxt.dao.impl;import Java.sql.sqlexception;import Javax.annotation.resource;import Org.hibernate.session;import Org.hibernate.sessionfactory;import Org.springframework.stereotype.component;import Com.bjsxt.dao.userdao;import Com.bjsxt.model.User; @Component ("U") public class Userdaoimpl implements Userdao { Private Sessionfactory sessionfactory;public sessionfactory getsessionfactory () {return sessionfactory;} @Resourcepublic void Setsessionfactory (Sessionfactory sessionfactory) {this.sessionfactory = sessionfactory;} public void Save (user user) {Session s = sessionfactory.getcurrentsession (); s.save (user);//throw new RuntimeException (" Exeption! ");}}

　　

Logdaoimpl.java:

Package Com.bjsxt.dao.impl;import Javax.annotation.resource;import Org.hibernate.session;import Org.hibernate.sessionfactory;import Org.springframework.stereotype.component;import Com.bjsxt.dao.LogDAO;import Com.bjsxt.model.Log, @Component ("Logdao") public class Logdaoimpl implements Logdao {private sessionfactory Sessionfactory;public sessionfactory getsessionfactory () {return sessionfactory;} @Resourcepublic void Setsessionfactory (Sessionfactory sessionfactory) {this.sessionfactory = sessionfactory;} public void Save (log log) {Session s = sessionfactory.getcurrentsession (); S.save (log);//throw new RuntimeException (" Error! ");}}

Userdao.java:

Package Com.bjsxt.dao;import Com.bjsxt.model.user;public interface Userdao {public void Save (user user);

Logdao.java:

Package Com.bjsxt.dao;import Com.bjsxt.model.user;public interface Userdao {public void Save (user user);

User.java

Package Com.bjsxt.model;import Javax.persistence.entity;import Javax.persistence.generatedvalue;import javax.persistence.Id; @Entitypublic class User {private int id;private String name; @Id @generatedvaluepublic int getId () { return ID;} public void setId (int id) {this.id = ID;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;}}

　　

Log.java:

Package Com.bjsxt.model;import Javax.persistence.entity;import Javax.persistence.generatedvalue;import javax.persistence.Id; @Entitypublic class User {private int id;private String name; @Id @generatedvaluepublic int getId () { return ID;} public void setId (int id) {this.id = ID;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;}}

　　

　　

　　

　　

　　

Sping to hibernate for transaction management--annotation