Question

您已经编写了一个测试（junit）案例，用于从/向MYSQL db创建和获取User实体。 Read功能正常，但Create功能不起作用。我都没有收到任何错误日志。以下是我的代码：

package com.learn.springConfig;
//importes

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "com.learn.persistence.dao")
@ComponentScan("com.learn.persistence")
@PropertySource({ "classpath:persistence-mysql.properties" })
public class PersistenceJpaConfig {

    @Autowired
    Environment env;

    @Bean
    public DataSource dataSource() {
        final DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(env.getProperty("jdbc.driverClassName"));
        dataSource.setUrl(env.getProperty("jdbc.url"));
        dataSource.setUsername(env.getProperty("jdbc.username"));
        dataSource.setPassword(env.getProperty("jdbc.password"));
        return dataSource;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        final LocalContainerEntityManagerFactoryBean entityManager = new LocalContainerEntityManagerFactoryBean();
        entityManager.setDataSource(dataSource());
        entityManager.setPackagesToScan(new String[] { "com.learn.persistence.model" });
        final JpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
        entityManager.setJpaVendorAdapter(jpaVendorAdapter);
        entityManager.setJpaProperties(additionalProperties());
        return entityManager;

    }

    private Properties additionalProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
        properties.setProperty("hibernate.show_sql", env.getProperty("hibernate.show_sql", "false"));
        properties.setProperty("jpa.generateDdl", env.getProperty("jpa.generateDdl", "true"));
        return properties;
    }

    @Bean
    public JpaTransactionManager transactionManager() {
        final JpaTransactionManager transactionManager = new JpaTransactionManager(entityManagerFactory().getObject());
        return transactionManager;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }

}

用户实体：

@Entity
@Table(name = "user")
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "USER_ID")
    private Long userId;
    private String email;
    @NotNull
    @Size(max = 255)
    private String name;
    @Nullable
    private boolean locked;
    @NotNull
    @Size(max = 255)
    private String password;
    //setters getters
}

Jpa用户存储库：

package com.learn.persistence.dao;

public interface UserJpaRepository extends CrudRepository<User, Long>{

}

单元测试案例：

@ContextConfiguration(classes = {PersistenceJpaConfig.class, ContextConfig.class})
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest
public class TestJPA {

    @Autowired
    private UserJpaRepository userJpaRepository;

    @Test
    @Transactional
    public void insertUsers() {
        User user1 = new User("puspender@fake.com","puspender", false, "12345");
        System.out.println("saving user");
        assertNotNull(userJpaRepository.save(user1));
    }

    @Test
    @Transactional
    public void findAllUsers() {
        Iterable<User> users = userJpaRepository.findAll();
        for(User user : users) {
            System.out.println(user.getName()+"\t"+ user.isLocked());
        }
    }

}

findAllUsers()为我带来了所有用户，但insertUsers()未插入用户任何提示，为什么会出现这种情况？

Answer 1

“我没有收到任何错误日志”，所以你的测试正在通过？但您保存的 user1 未显示在findAll()？

中

默认情况下，测试是事务性的，在每次测试结束时回滚。因此，在您的第二次测试中findAllUsers user1 不再存在。

Spring Data Jpa没有将实体持久化到mysql

1 个答案: