Spring jdbctemplate和事务管理器 全注解配置 不使用xml

/** * spring的配置类，相当于bean.xml */@Configuration//@Configuration标注在类上，相当于把该类作为spring的xml配置文件中的<beans>// 作用为：配置spring容器(应用上下文)@ComponentScan("com.zxh")//需要扫描的包@Import({JdbcConfig.class,TransactionConfig.class})//子配置类@PropertySource("jdbcConfig.properties")//数据源properties文件@EnableTransactionManagement//开启spring对事务注解的支持public class SpringConfiguration {}

//jdbc配置类

public class JdbcConfig {

    @Value("${jdbc.driver}")    private String driver;

    @Value("${jdbc.url}")    private String url;

    @Value("${jdbc.username}")    private String username;

    @Value("${jdbc.password}")    private String password;

    /**     * 创建JdbcTemplate     * @param dataSource     * @return     */    @Bean(name="jdbcTemplate")    public JdbcTemplate createJdbcTemplate(DataSource dataSource){        return new JdbcTemplate(dataSource);    }

    /**     * 创建数据源对象     * @return     */    @Bean(name="dataSource")    public DataSource createDataSource(){        DriverManagerDataSource ds = new DriverManagerDataSource();        ds.setDriverClassName(driver);        ds.setUrl(url);        ds.setUsername(username);        ds.setPassword(password);        return ds;    }}

//事务配置类

/** * 和事务相关的配置类 */public class TransactionConfig {

    /**     * 用于创建事务管理器对象     * @param dataSource     * @return     */    @Bean(name="transactionManager")    public PlatformTransactionManager createTransactionManager(DataSource dataSource){        return new DataSourceTransactionManager(dataSource);    }}

持久层和事务层实现类不变

@Repository("accountDao")public class AccountDaoImpl implements IAccountDao {

    @Autowired    private JdbcTemplate jdbcTemplate;

    @Override    public Account findAccountById(Integer accountId) {        List<Account> accounts = jdbcTemplate.query("select * from account where id = ?",new BeanPropertyRowMapper<Account>(Account.class),accountId);        return accounts.isEmpty()?null:accounts.get(0);    }

    @Override    public Account findAccountByName(String accountName) {        List<Account> accounts = jdbcTemplate.query("select * from account where name = ?",new BeanPropertyRowMapper<Account>(Account.class),accountName);        if(accounts.isEmpty()){            return null;        }        if(accounts.size()>1){            throw new RuntimeException("结果集不唯一");        }        return accounts.get(0);    }

    @Override    public void updateAccount(Account account) {        jdbcTemplate.update("update account set name=?,money=? where id=?",account.getName(),account.getMoney(),account.getId());    }}

@Service("accountService")@Transactional(propagation= Propagation.SUPPORTS,readOnly=true)//只读型事务的配置public class AccountServiceImpl implements IAccountService {

    @Autowired    private IAccountDao accountDao;

    @Override    public Account findAccountById(Integer accountId) {        return accountDao.findAccountById(accountId);

    }

    //需要的是读写型事务配置    @Transactional(propagation= Propagation.REQUIRED,readOnly=false)    @Override    public void transfer(String sourceName, String targetName, Float money) {        System.out.println("transfer....");            //2.1根据名称查询转出账户            Account source = accountDao.findAccountByName(sourceName);            //2.2根据名称查询转入账户            Account target = accountDao.findAccountByName(targetName);            //2.3转出账户减钱            source.setMoney(source.getMoney()-money);            //2.4转入账户加钱            target.setMoney(target.getMoney()+money);            //2.5更新转出账户            accountDao.updateAccount(source);

//            int i=1/0;

            //2.6更新转入账户            accountDao.updateAccount(target);    }}

//properties

jdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8jdbc.username=rootjdbc.password=root

//test

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(classes= SpringConfiguration.class)public class AccountServiceTest {

    @Autowired    private  IAccountService as;

    @Test    public  void testTransfer(){        as.transfer("aaa","bbb",100f);

    }

}

原文地址：https://www.cnblogs.com/yitaqiotouto/p/12607875.html