2016-11-30 109 views
4

我使用的是Spring的NamedParameterJdbcTemplate,我試圖使用@Transactional來確保兩個插入既可以持久保存到數據庫,也可以回滾到一個,以防另一個插入失敗。Spring @Transactional不回滾

的代碼被設計成與MySQL運行並且正在與H2在存儲器測試。

它不工作......第二次插入失敗,但第一次沒有回滾。

下面是相關的類:

MySpringConfig.java

package com.MyPackage.spring 

@Configuration 
@ComponentScan({ "com.MyPackage" }) 
public class MySpringConfig { 

@Bean 
public NamedParameterJdbcTemplate namedParameterJdbcTemplate() throws Exception { 
    return new NamedParameterJdbcTemplate(dataSource()); 
} 

@Bean 
public DataSourceTransactionManager dataSourceTransactionManager() throws Exception { 
    return new DataSourceTransactionManager(dataSource()); 
} 


@Bean(name = "customerEntitiesDataSource") 
public DataSource dataSource() throws Exception { 
    Properties properties = new Properties(); 
    properties.put("url", "db-url"); 
    properties.put("username", "uName"); 
    properties.put("password", "pwd"); 
    BasicDataSource dataSource = BasicDataSourceFactory.createDataSource(properties); 
    return dataSource; 
} 
} 

MyDao.java

package com.MyPackage.dao 

@Repository 
public class MyDao { 
    private ObjectMapper mapper = new ObjectMapper(); 

    @Autowired 
    private NamedParameterJdbcTemplate jdbcTemplate; 

    private static String INSERT_ELEMENT_QUERY = "INSERT INTO TableA..." + " VALUES (:param1, :param2)"; 

    @Transactional(rollbackFor = {Exception.class}, propagation=Propagation.REQUIRED) 
    public void storeElements(List<Element> element) { 


     Stream<HashMap<String, Object>> hashMapStream = elements.stream().map(
       element -> { 
        HashMap<String, Object> params = new HashMap<>(); 
        params.put("param1", element.getParam1()); 
        params.put("param2", element.getParam2()); 
        return params; 
       } 
     ); 
     List<Map<String, Object>> collect = hashMapStream.collect(Collectors.<Map<String, Object>>toList()); 
     Map<String, Object>[] batchValues = new Map[]{}; 
     batchValues = collect.toArray(batchValues); 

     jdbcTemplate.batchUpdate(INSERT_ELEMENT_QUERY, batchValues); 

     computers.stream().forEach(element -> saveExtraData(element)); 
    } 


    private static String INSERT_ELEMENT_EXTRA_DATA_QUERY = "INSERT INTO TableB... Values (:val1, :val2)"; 

    @Transactional(rollbackFor = {Exception.class}, propagation=Propagation.REQUIRED) 
    public void saveExtraData(Element element) { 

     Stream<HashMap<String, Object>> hashMapStream = element.getExtraData().stream().map(
       extra -> { 
        HashMap<String, Object> params = new HashMap<>(); 
        params.put("val1", extra.getVal1()); 
        params.put("val2", extra.getVal2()); 
        return params; 
       } 
     ); 
     List<Map<String, Object>> collect = hashMapStream.collect(Collectors.<Map<String, Object>>toList()); 
     Map<String, Object>[] batchValues = new Map[]{}; 
     batchValues = collect.toArray(batchValues); 

     jdbcTemplate.batchUpdate(INSERT_ELEMENT_EXTRA_DATA_QUERY , batchValues); 
    } 
} 

我跑的測試:發送列表元素到storeElements()但確保其中一個元素有extraData太長,無法存儲在TableB中。然後我檢查數據庫以確保沒有元素存儲在數據庫中。

插入失敗,但沒有回滾。

整個代碼是一個彈簧組,從試驗,一路通過對storeElements方法。

運行調試,我看到沒有一個DataSourceTransactionManager對象方法被調用,除了構造函數,在加載Spring上下文時,它的創作。

我在這裏錯過了什麼?

回答

2

註解你MySpringConfig@EnableTransactionManagement啓用事務管理。

@Configuration 
@ComponentScan({ "com.MyPackage" }) 
@EnableTransactionManagement 
public class MySpringConfig { 
相關問題