Spring把底的事务管理接口操象出来,形成了一套统一的事务管理方式,适用JTA和JDBC,Spring 提供了两种事务管理方式,和种是编程式事务另一种是声明式事务,我不喜欢声明式事务,所以就不用管它了,编程式事务有两种方式实现,一种是使用事务管理模板,另一种是用PlatformTransactinManage,下面类是我写的一个例程,仅供参考的,技术细节需参考相关文档
package com.spring;
import java.sql.Connection;
import java.sql.Statement;
import javax.sql.DataSource;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.jdbc.datasource.DataSourceUtils;
import org.springframework.orm.toplink.TopLinkTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.DefaultTransactionDefinition;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;
public class TransactionDemo {
/**
* spring事务模板例子
*
*/
public void templateTemplateDemo(){
final ApplicationContext ctx=new ClassPathXmlApplicationContext("src/bean.xml");
//ClassPathResource cpr=new ClassPathResource("bean.xml");
//final XmlBeanFactory factory=new XmlBeanFactory(cpr);
PlatformTransactionManager ptm=(PlatformTransactionManager)ctx.getBean("transactionManager");
TransactionTemplate tt=new TransactionTemplate(ptm);
tt.execute(new TransactionCallbackWithoutResult(){
@Override
protected void doInTransactionWithoutResult(TransactionStatus ts) {
try{
DataSource ds=(DataSource)ctx.getBean("dataSource");
Connection conn=DataSourceUtils.getConnection(ds);
Statement stmt=conn.createStatement();
stmt.execute("insert into tuser values(123,'裴德万')");
}catch(Exception e){
ts.setRollbackOnly();
e.printStackTrace();
}
}
});
}
/**
* 使用PlatforTransactionManager实现类管理事务
*
*/
public void PlatforTransactionManagerDemo(){
ApplicationContext ctx=new ClassPathXmlApplicationContext("bean.xml");
PlatformTransactionManager tm=(PlatformTransactionManager)ctx.getBean("transactionManager");
DefaultTransactionDefinition dtf=new DefaultTransactionDefinition();//初始化一个默认事务
dtf.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);//设置事务定义对象的事务传达室播属性
TransactionStatus ts=tm.getTransaction(dtf);//TransactionStatus代表事务对象本身,getTransaction开始一个事务
try{
DataSource ds=(DataSource)ctx.getBean("dataSource");
Connection conn=DataSourceUtils.getConnection(ds);
Statement stmt=conn.createStatement();
stmt.execute("insert into tuser values(123,'裴德万')");
tm.commit(ts);
}catch(Exception e){
tm.rollback(ts);
e.printStackTrace();
}
}
public static void main(String[] args){
TransactionDemo td=new TransactionDemo();
td.templateTemplateDemo();
}
}
对应的XML文件配置(jdbc)如下:
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8</value>
</property>
<property name="username">
<value>root</value>
</property>
<property name="password">
<value>123456</value>
</property>
</bean>
JTA的配置如下
<bean id="transactionManager" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="dataSource">
<property name="jndiName">
<value>jdbc/kkmei</value>
</property>
</bean>
<bean id="jtatm" class="org.springframework.transaction.jta.JtaTransactionManager">
</bean>
使用ApplicationContext时只能通过applicationContext.xml来初始化容器
final ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
mysql 乱码问题由来已久,今天发现把my.ini中的字符编码改为utf-8时,mysql无法启动。在这个例子中我们使用了utf-8编码,那么我们要把test数据库的编码,表编码,字段编码全改成utf-8就没问题了,mysql-front停止开发了,郁闷
posted on 2007-09-28 23:51
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