transaction学习列子

http://www.byteslounge.com/tutorials/spring-transaction-propagation-tutorial

package com.tgb.service;

import javax.annotation.Resource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

@Service(value="sService")
public class StudentService {

    @Resource
    private TeacherService tService;
    
    @Resource
    private JdbcTemplate jdbcTemplate;
    
    @Transactional(propagation = Propagation.REQUIRED)
    public void addStudent(){
        String sql = "insert into student(name) values('st0')";
        jdbcTemplate.execute(sql);
//      try{
//          int a = Integer.parseInt("s");
//      }catch(Exception e){
//          throw new RuntimeException();
//      }
//      tService.addTeacher();
//      tService.addTeacher6();
//      tService.addTeacher1();
        tService.addTeacher3();
//      tService.addTeacher4();
//      tService.addTeacher5();
        
//      throw new RuntimeException();
    }
    
    
    @Transactional(propagation = Propagation.MANDATORY)
    public void addStudent1(){
        String sql = "insert into student(name) values('st1')";
        jdbcTemplate.execute(sql);
    }
    
    @Transactional(propagation = Propagation.NESTED)
    public void addStudent2(){
        String sql = "insert into student(name) values('st2')";
        jdbcTemplate.execute(sql);
        tService.addTeacher2();
//      throw new RuntimeException();
    }
    
    @Transactional(propagation = Propagation.NEVER)
    public void addStudent3(){
        String sql = "insert into student(name) values('st3')";
        jdbcTemplate.execute(sql);
        tService.addTeacher6();
        throw new RuntimeException();
    }
    
    @Transactional(propagation = Propagation.NOT_SUPPORTED)
    public void addStudent4(){
        String sql = "insert into student(name) values('st4')";
        jdbcTemplate.execute(sql);
        tService.addTeacher4();
        throw new RuntimeException();
    }
    
    @Transactional(propagation = Propagation.REQUIRES_NEW)
    public void addStudent5(){
        String sql = "insert into student(name) values('st5')";
        jdbcTemplate.execute(sql);
        tService.addTeacher5();
        throw new RuntimeException();
    }
    
    @Transactional(propagation = Propagation.SUPPORTS)
    public void addStudent6(){
        String sql = "insert into student(name) values('st6')";
        jdbcTemplate.execute(sql);
        tService.addTeacher6();
        throw new RuntimeException();
    }


    public TeacherService gettService() {
        return tService;
    }


    public void settService(TeacherService tService) {
        this.tService = tService;
    }
}

package com.tgb.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

@Service
public class TeacherService {

    
    @Autowired
    private JdbcTemplate jdbcTemplate;
    
    /**
     * REQUIRED
     */
    @Transactional(propagation = Propagation.REQUIRED)
    public void addTeacher(){
        String sql = "insert into teacher(name) values ('t0')";
        jdbcTemplate.execute(sql);
//      throw new RuntimeException();
    }
    
    
    /**
     * MANDATORY
     */
    @Transactional(propagation = Propagation.MANDATORY)
    public void addTeacher1(){
        String sql = "insert into teacher(name) values ('t1')";
        jdbcTemplate.execute(sql);
    }
    
    
    /**
     * NESTED
     */
    @Transactional(propagation = Propagation.NESTED)
    public void addTeacher2(){
        String sql = "insert into teacher(name) values ('t2')";
        jdbcTemplate.execute(sql);
    }
    
    
    /**
     * NEVER
     */
    @Transactional(propagation = Propagation.NEVER)
    public void addTeacher3(){
        String sql = "insert into teacher(name) values ('t3')";
        jdbcTemplate.execute(sql);
    }
    
    
    /**
     * NOT_SUPPORTED
     */
    @Transactional(propagation = Propagation.NOT_SUPPORTED)
    public void addTeacher4(){
        String sql = "insert into teacher(name) values ('t4')";
        jdbcTemplate.execute(sql);
        throw new RuntimeException();
    }
    
    
    /**
     * REQUIRES_NEW
     */
    @Transactional(propagation = Propagation.REQUIRES_NEW)
    public void addTeacher5(){
        String sql = "insert into teacher(name) values ('t5')";
        jdbcTemplate.execute(sql);
    }
    
    
    /**
     * SUPPORTS
     */
    @Transactional(propagation = Propagation.SUPPORTS)
    public void addTeacher6(){
        String sql = "insert into teacher(name) values ('t6')";
        jdbcTemplate.execute(sql);
    }
}