Question

我想将Playframework 2.5与Spring和JPA一起使用。我找到了以下模板https://github.com/jamesward/play-java-spring，它完美地运行，遗憾的是它不适用于Playframework 2.5。所以我决定调整这个模板并为Playframework 2.5创建自己的模板。但是，我的控制器entitymanager中的Application仍为null。我究竟做错了什么？我的代码如下所示：

AppConfig.java

package config;
@Configuration
@ComponentScan({"daos","services","controllers","models"})
public class AppConfig {

}

DataConfig.java

package config;
@Configuration
@EnableTransactionManagement
public class DataConfig
{

@Bean
public EntityManagerFactory entityManagerFactory() {
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    vendorAdapter.setShowSql(true);
    vendorAdapter.setGenerateDdl(true);
    LocalContainerEntityManagerFactoryBean entityManagerFactory = new LocalContainerEntityManagerFactoryBean();
    entityManagerFactory.setPackagesToScan("models");
    entityManagerFactory.setJpaVendorAdapter(vendorAdapter);
    entityManagerFactory.setDataSource(dataSource());
    entityManagerFactory.setJpaPropertyMap(new HashMap<String, String>(){{

        put("hibernate.hbm2ddl.auto", "create-drop"); 

        put("hibernate.dialect","org.hibernate.dialect.PostgreSQLDialect"); 
    }});
    entityManagerFactory.afterPropertiesSet();

    return entityManagerFactory.getObject();
}

@Bean
public PlatformTransactionManager transactionManager() {
    JpaTransactionManager transactionManager = new JpaTransactionManager(entityManagerFactory());

    return transactionManager;
}

@Bean
public DataSource dataSource() {

    final DriverManagerDataSource dataSource = new DriverManagerDataSource();

    dataSource.setDriverClassName("org.h2.Driver");
    dataSource.setUrl("jdbc:h2:mem:test;DB_CLOSE_DELAY=-1");

    return dataSource;
}

}

Global.java

package config;
@Singleton
@Configuration
public class Global 
{
    private ConfigurableApplicationContext context;

@Inject
public Global(ApplicationLifecycle lifecyle)
{
    this.context = new AnnotationConfigApplicationContext(AppConfig.class, DataConfig.class);
    lifecyle.addStopHook(()-> {
        context.close();
        return CompletableFuture.completedFuture(null);
    });
}
}

Application.java

package controllers;
@Controller
@Transactional
@Component
public class Application extends play.mvc.Controller
{
@PersistenceContext
private EntityManager em;

@Transactional
public Result index()
{
    System.out.println("******************* EM " + this.em +" *************************");

    return ok(index.render());
}
}

感谢您的帮助！

为什么Playframework 2.5中的实体管理器仍然为空？

0 个答案: