Spring 事务管理和mysql乱码解决

Spring 事务管理和mysql乱码解决

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 &amp; 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