@自动连线SessionFactory在Java配置中返回null spring
当我尝试在sessionFactory中使用DI时,我在sessionFactory中遇到空指针异常,我必须将Spring3项目转换为Spring4,而不使用xml。我不知道我面临什么问题,SessionFactory根本没有自动连线。当我尝试测试通用doa Add方法时 这是我的bean配置文件@自动连线SessionFactory在Java配置中返回null spring,java,spring,spring-mvc,nullpointerexception,Java,Spring,Spring Mvc,Nullpointerexception,当我尝试在sessionFactory中使用DI时,我在sessionFactory中遇到空指针异常,我必须将Spring3项目转换为Spring4,而不使用xml。我不知道我面临什么问题,SessionFactory根本没有自动连线。当我尝试测试通用doa Add方法时 这是我的bean配置文件 @Configuration @EnableTransactionManagement @EnableWebMvc @ComponentScan(basePackages = "io.github.b
@Configuration
@EnableTransactionManagement
@EnableWebMvc
@ComponentScan(basePackages = "io.github.bibekshakya35.ehealth")
public class EhealthCofiguration {
@Bean
public ViewResolver getViewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/view/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
@Bean(name = "dataSource")
public javax.sql.DataSource getDataSource() {
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName("org.postgresql.Driver");
dataSource.setUrl("jdbc:postgresql://localhost:5432/ehealth");
dataSource.setUsername("test");
dataSource.setPassword("test123");
return dataSource;
}
@Autowired
@Bean(name = "sessionFactory")
public SessionFactory getSessionFactory(javax.sql.DataSource dataSource) {
LocalSessionFactoryBuilder sessionBuilder = new LocalSessionFactoryBuilder(dataSource);
sessionBuilder.scanPackages("io.github.bibekshakya35.ehealth.model");
sessionBuilder.addProperties(getHibernateProperties());
return sessionBuilder.buildSessionFactory();
}
private Properties getHibernateProperties() {
Properties properties = new Properties();
properties.put("hibernate.show_sql", "true");
properties.put("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
properties.put("hibernate.hbm2ddl.auto", "update");
return properties;
}
@Autowired
@Bean(name = "transactionManager")
public HibernateTransactionManager getTransactionManager(
SessionFactory sessionFactory) {
HibernateTransactionManager transactionManager = new HibernateTransactionManager(
sessionFactory);
return transactionManager;
}
}
加载我创建的这个类
public class EhealthWebAppIntializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext applicationContext = new AnnotationConfigWebApplicationContext();
applicationContext.register(EhealthCofiguration.class);
ServletRegistration.Dynamic dispatcher =servletContext.addServlet("SpringDispatcher", new DispatcherServlet(applicationContext));
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/");
}
}
这是我的通用doa类,当SessionFactory尝试访问SessionFactory.getCurrentSession()时,我在其中注入SessionFactory代码>NPE发生时
@Repository
@Transactional
public class HibernateDAO<T extends Serializable> implements IGenericDao<T> {
private Class<T> clazz;
Session session;
@Autowired
SessionFactory sessionFactory;
private static final Logger LOG = Logger.getLogger(HibernateDAO.class.getName());
@Override
public void setClazz(Class<T> clazzToSet) {
this.clazz = clazzToSet;
}
@Override
public void create(T entity) {
session = getCurrentSession();
LOG.log(Level.INFO, "inside create entity and you just bind your session to the current one{0}", session.toString());
session.saveOrUpdate(entity);
LOG.info("saved");
session.flush();
session.refresh(entity);
}
protected Session getCurrentSession() {
return sessionFactory.getCurrentSession();
}
}
这是我的用户实体
@Entity
@Table(name = "users")
public class User implements Serializable, AbstractEntity {
@Id
@Column(name = "username",unique = true)
private String userName;
@NotNull(message = "password cannot be empty")
@Column(name = "users_password")
private String userPassword;
@Embedded
private UserProfile userProfile;
@Embedded
private AuditInfo auditInfo;
@Enumerated(EnumType.STRING)
private UserType userType;
@Column(name = "is_active")
private boolean active = true;
//getter n setter
}
在聊天中,您向我提供了以下代码:
public static void main(String[] args) {
User user = new User();
IGenericDao<User> iGenericDao = new HibernateDAO<>();
user.setUserName("bibekshakya35");
user.setUserPassword("ros3");
user.setUserType(UserType.GUEST);
user.setActive(true);
UserProfile userProfile = new UserProfile();
userProfile.setAge(21);
userProfile.setBasicInfo("kdhsa");
userProfile.setEmailId("dsadas@gmail.com");
userProfile.setUserGender(UserGender.Male);
userProfile.setFullname("bibek shakya");
userProfile.setMobileNumber("45454545");
userProfile.setLandLineNumber("445444");
userProfile.setUserProfilePic("index.jsp");
user.setUserProfile(userProfile);
AuditInfo auditInfo = new AuditInfo();
auditInfo.setCreatedOn(new Date());
auditInfo.setModifiedOn(new Date());
auditInfo.setVerifiedOn(new Date());
user.setAuditInfo(auditInfo);
iGenericDao.create(user);
}
HibernateDAO所在包的名称是什么?@shazin它位于“io.github.bibekshakya35.ehealth.DAO.genericdao”包下如何使用HibernateDAO?通过接口Igenericdao可以添加stackTrace吗?
public static void main(String[] args) {
User user = new User();
IGenericDao<User> iGenericDao = new HibernateDAO<>();
user.setUserName("bibekshakya35");
user.setUserPassword("ros3");
user.setUserType(UserType.GUEST);
user.setActive(true);
UserProfile userProfile = new UserProfile();
userProfile.setAge(21);
userProfile.setBasicInfo("kdhsa");
userProfile.setEmailId("dsadas@gmail.com");
userProfile.setUserGender(UserGender.Male);
userProfile.setFullname("bibek shakya");
userProfile.setMobileNumber("45454545");
userProfile.setLandLineNumber("445444");
userProfile.setUserProfilePic("index.jsp");
user.setUserProfile(userProfile);
AuditInfo auditInfo = new AuditInfo();
auditInfo.setCreatedOn(new Date());
auditInfo.setModifiedOn(new Date());
auditInfo.setVerifiedOn(new Date());
user.setAuditInfo(auditInfo);
iGenericDao.create(user);
}
@Controller
@RequestMapping(value="/someURL")
public class mainClass {
@Autowired
HibernateDAO abc;
//Code (methods) to test Your CRUD Operations
}