如何在 Bluemix 上为 MySQL 配置云数据源？

Question

当在 Bluemix 上 运行 时，如何在 MySQL 中为云创建数据源？如果有可用的 Java 配置示例，请分享。如何让 Hibernate 创建表以及为什么会出现此错误？

Error creating bean with name 'entityManagerFactory' defined in com.covenant.app.config.root.DatabaseConfig: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.jdbc.datasource.DriverManagerDataSource]: : No qualifying bean of type [org.springframework.jdbc.datasource.DriverManagerDataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.jdbc.datasource.DriverManagerDataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}

我的数据库配置class

@Configuration
@Profile("cloud")
@EnableTransactionManagement
public class CloudDatabaseConfig extends AbstractCloudConfig {

        @Bean
            public DataSource inventoryDataSource() {
                return connectionFactory().dataSource("mysql");
            }
        @Bean(name = "namingStrategy")
        public ImprovedNamingStrategy getNamingStrategy(){

            ImprovedNamingStrategy namingStrategy = new  CDCustomNamingStrategy();
            return namingStrategy;
        }
        @Bean(name="dataSource")
        public BasicDataSource dataSource() throws PropertyVetoException {
            BasicDataSource bean = new BasicDataSource();
            bean.setDriverClassName("com.mysql.jdbc.Driver");
            bean.setUrl("jdbc:mysql://localhost:3306/bluemix?useUnicode=true&characterEncoding=UTF-8");
            bean.setUsername("root");
            bean.setPassword("root");
            return bean;
        }
        @Bean(name = "entityManagerFactory")
        public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, ImprovedNamingStrategy ins) {

            LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
            entityManagerFactoryBean.setDataSource(dataSource);
            entityManagerFactoryBean.setPackagesToScan(new String[]{"com.covenant.app.model"});
            entityManagerFactoryBean.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
            entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());


            Map<String, Object> jpaProperties = new HashMap<String, Object>();
            jpaProperties.put("database", "mysql");
            jpaProperties.put("hibernate.hbm2ddl.auto", "update");
            jpaProperties.put("hibernate.show_sql", "true");
            jpaProperties.put("hibernate.format_sql", "true");
            jpaProperties.put("hibernate.use_sql_comments", "true");
            jpaProperties.put("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
            jpaProperties.put("hibernate.ejb.naming_strategy", ins);
            entityManagerFactoryBean.setJpaPropertyMap(jpaProperties);

            return entityManagerFactoryBean;
        }

    }

我在 Bluemix 上的 manifest.yml 文件：

---
applications:
  - name: lordthankyou
    path: target/ideals.war
    services:
      - mysql
env:
    SPRING_PROFILES_ACTIVE: cloud

我收到以下错误：

Error creating bean with name 'userService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.covenant.app.dao.UserRepository com.covenant.app.services.UserService.userRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined

Answer 1

终于我开始工作了 我只是在 manifest.yml 中添加了一个环境变量来激活云配置文件并删除了 extends AbstractCloudConfig 因为它也在搜索 mongodb 。在这些更改之后它开始工作现在我可以 运行 spring mvc on blue mix。