Spring AOP事務(wù)管理的示例詳解

更新時(shí)間：2022年06月20日 08:29:10 作者：倔強(qiáng)的牛角

這篇文章將通過轉(zhuǎn)賬案例為大家詳細(xì)介紹一下Spring AOP是如何進(jìn)行事務(wù)管理的，文中的示例代碼講解詳細(xì)，感興趣的小伙伴可以了解一下

步驟1:準(zhǔn)備數(shù)據(jù)庫表
步驟2:創(chuàng)建項(xiàng)目導(dǎo)入jar包
步驟3:根據(jù)表創(chuàng)建模型類
步驟4:創(chuàng)建Dao接口
步驟5:創(chuàng)建Service接口和實(shí)現(xiàn)類
步驟6:添加jdbc.properties文件
步驟7:創(chuàng)建JdbcConfig配置類
步驟8:創(chuàng)建MybatisConfig配置類
步驟9:創(chuàng)建SpringConfig配置類
步驟10:編寫測(cè)試類

事務(wù)管理

轉(zhuǎn)賬案例-環(huán)境搭建

步驟1:準(zhǔn)備數(shù)據(jù)庫表

之前我們?cè)谡螹ybatis的時(shí)候已經(jīng)創(chuàng)建了這個(gè)表,可以直接使用

create database spring_db character set utf8;
use spring_db;
create table tbl_account(
    id int primary key auto_increment,
    name varchar(35),
    money double
);
insert into tbl_account values(1,'Tom',1000);
insert into tbl_account values(2,'Jerry',1000);

步驟2:創(chuàng)建項(xiàng)目導(dǎo)入jar包

項(xiàng)目的pom.xml添加相關(guān)依賴

<dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.10.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.16</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.6</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.47</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.10.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.2.10.RELEASE</version>
    </dependency>

  </dependencies>

步驟3:根據(jù)表創(chuàng)建模型類

public class Account implements Serializable {

    private Integer id;
    private String name;
    private Double money;
	//setter...getter...toString...方法略    
}

步驟4:創(chuàng)建Dao接口

public interface AccountDao {

    @Update("update tbl_account set money = money + #{money} where name = #{name}")
    void inMoney(@Param("name") String name, @Param("money") Double money);

    @Update("update tbl_account set money = money - #{money} where name = #{name}")
    void outMoney(@Param("name") String name, @Param("money") Double money);
}

步驟5:創(chuàng)建Service接口和實(shí)現(xiàn)類

public interface AccountService {
    /**
     * 轉(zhuǎn)賬操作
     * @param out 傳出方
     * @param in 轉(zhuǎn)入方
     * @param money 金額
     */
    public void transfer(String out,String in ,Double money) ;
}

@Service
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    public void transfer(String out,String in ,Double money) {
        accountDao.outMoney(out,money);
        accountDao.inMoney(in,money);
    }

}

步驟6:添加jdbc.properties文件

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/spring_db?useSSL=false
jdbc.username=root
jdbc.password=root

步驟7:創(chuàng)建JdbcConfig配置類

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;

    @Bean
    public DataSource dataSource(){
        DruidDataSource ds = new DruidDataSource();
        ds.setDriverClassName(driver);
        ds.setUrl(url);
        ds.setUsername(userName);
        ds.setPassword(password);
        return ds;
    }
}

步驟8:創(chuàng)建MybatisConfig配置類

public class MybatisConfig {

    @Bean
    public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource){
        SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
        ssfb.setTypeAliasesPackage("com.itheima.domain");
        ssfb.setDataSource(dataSource);
        return ssfb;
    }

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer(){
        MapperScannerConfigurer msc = new MapperScannerConfigurer();
        msc.setBasePackage("com.itheima.dao");
        return msc;
    }
}

步驟9:創(chuàng)建SpringConfig配置類

@Configuration
@ComponentScan("com.itheima")
@PropertySource("classpath:jdbc.properties")
@Import({JdbcConfig.class,MybatisConfig.class})
public class SpringConfig {
}

步驟10:編寫測(cè)試類

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

    @Autowired
    private AccountService accountService;

    @Test
    public void testTransfer() throws IOException {
        accountService.transfer("Tom","Jerry",100D);
    }

}

事務(wù)管理

上述環(huán)境，運(yùn)行單元測(cè)試類，會(huì)執(zhí)行轉(zhuǎn)賬操作，Tom的賬戶會(huì)減少100，Jerry的賬戶會(huì)加100。

這是正常情況下的運(yùn)行結(jié)果，但是如果在轉(zhuǎn)賬的過程中出現(xiàn)了異常，如:

@Service
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    public void transfer(String out,String in ,Double money) {
        accountDao.outMoney(out,money);
        int i = 1/0;
        accountDao.inMoney(in,money);
    }

}

以上就是Spring AOP事務(wù)管理的示例詳解的詳細(xì)內(nèi)容，更多關(guān)于Spring AOP事務(wù)管理的資料請(qǐng)關(guān)注腳本之家其它相關(guān)文章！

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