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我的嘗試運行使用Spring 4簡單的應用程序，休眠4，和c3p0池，我不斷收到此錯誤：彈簧4 + hibernate的4個+ C3P0：無法獲得交易同步會話當前線程的
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDao': Invocation of init method failed; nested exception is org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:136)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1560)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4937)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:134)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
at ggdb.components.database.dao.GenericDao.getCurrentSession(GenericDao.java:61)
at ggdb.components.database.dao.UserDao.getUser(UserDao.java:36)
at ggdb.components.database.dao.UserDao.postConstruct(UserDao.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:349)
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:300)
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133)
... 23 more
這裏是我的配置：
@Configuration
@EnableTransactionManagement
@PropertySource("classpath:application.properties")
public class DatabaseConfigutarion implements TransactionManagementConfigurer {
@Autowired
private Environment env;
public class PropertiesKeys {
public static final String DATABASE_HOST = "database.host";
public static final String DATABASE_PORT = "database.port";
public static final String DATABASE_USERNAME = "database.username";
public static final String DATABASE_PASSWORD = "database.password";
public static final String DATABASE_NAME = "database.database_name";
public static final String DATABASE_ADDITIONAL_CONNECTION_PROPERTIES = "database.additional.connection.properties";
public static final String HIBERNATE_DEFAULT_SCHEMA = "hibernate.default_schema";
public static final String HIBERNATE_HBM2DDL_AUTO = "hibernate.hbm2ddl.auto";
}
@Bean
public SessionFactory sessionFactory() {
String databaseUrl = String.format("jdbc:mysql://%s:%s/%s", env.getProperty(PropertiesKeys.DATABASE_HOST), env.getProperty(PropertiesKeys.DATABASE_PORT), env.getProperty(PropertiesKeys.DATABASE_NAME));
String additionnalProperties = env.getProperty(PropertiesKeys.DATABASE_ADDITIONAL_CONNECTION_PROPERTIES);
databaseUrl = (additionnalProperties.isEmpty() ? databaseUrl : String.format("%s?%s", databaseUrl, additionnalProperties));
org.hibernate.cfg.Configuration configuration = new org.hibernate.cfg.Configuration();
configuration.setProperty("hibernate.connection.driver_class", com.mysql.jdbc.Driver.class.getName());
configuration.setProperty("hibernate.connection.url", databaseUrl);
configuration.setProperty("hibernate.connection.username", env.getProperty(PropertiesKeys.DATABASE_USERNAME));
configuration.setProperty("hibernate.connection.password", env.getProperty(PropertiesKeys.DATABASE_PASSWORD));
configuration.setProperty("hibernate.c3p0.min_size", "5");
configuration.setProperty("hibernate.c3p0.max_size", "20");
configuration.setProperty("hibernate.c3p0.timeout", "1800");
configuration.setProperty("hibernate.c3p0.max_statements", "50");
configuration.setProperty("hibernate.current_session_context_class", org.springframework.orm.hibernate4.SpringSessionContext.class.getName());
configuration.setProperty("hibernate.dialect", org.hibernate.dialect.MySQL5InnoDBDialect.class.getName());
configuration.setProperty("hibernate.show_sql", "false");
configuration.setProperty("hibernate.format_sql", "false");
configuration.setProperty("hibernate.temp.use_jdbc_metadata_defaults", "false");
configuration.setProperty("hibernate.default_schema", env.getProperty(PropertiesKeys.HIBERNATE_DEFAULT_SCHEMA));
configuration.setProperty("hibernate.hbm2ddl.auto", env.getProperty(PropertiesKeys.HIBERNATE_HBM2DDL_AUTO));
configuration.addAnnotatedClass(ggdb.components.database.entities.User.class);
configuration.addAnnotatedClass(ggdb.components.database.entities.Role.class);
ServiceRegistry serviceRegistry = (new StandardServiceRegistryBuilder())
.applySettings(configuration.getProperties())
.build();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
return sessionFactory;
}
@Bean
public HibernateTransactionManager transactionManager(){
HibernateTransactionManager transactionManager = new HibernateTransactionManager();
transactionManager.setSessionFactory(sessionFactory());
return transactionManager;
}
@Override
public HibernateTransactionManager annotationDrivenTransactionManager() {
return transactionManager();
}
public Environment getEnv() {
return env;
}
public void setEnv(Environment env) {
this.env = env;
}
}
和代碼拋出錯誤：
@Repository
public class UserDao extends GenericDao<User> {
public UserDao() {
super(User.class);
}
// TODO: this method is temporary,
// should be removed later,
@PostConstruct
@Transactional
public void postConstruct() {
User user = getUser("user");
if (user == null) {
user = new User();
user.setUsername("user");
user.setPassword("pass");
save(user);
}
}
@Transactional
public User getUser(String username) {
@SuppressWarnings("unchecked")
List<User> users = (List<User>) getCurrentSession().getNamedQuery(User.FIND_BY_USERNAME).setParameter("username", username).list();
return (users.isEmpty() ? null : users.get(0));
}
}
Ë xtended class code：
public class GenericDao<T> {
private final Class<T> parameterClass;
@Autowired
protected SessionFactory sessionFactory;
public GenericDao(Class<T> parameterClass) {
this.parameterClass = parameterClass;
}
protected Session getSession() {
return sessionFactory.getCurrentSession();
}
public Long save(T t) {
return (Long) getSession().save(t);
}
public void delete(Long id) {
getSession().delete(id);
}
@SuppressWarnings("unchecked")
public T get(Long id) {
return (T) getSession().get(parameterClass, id);
}
public void refresh(T t) {
getSession().refresh(t);
}
@SuppressWarnings("unchecked")
public T merge(T t) {
return (T) getSession().merge(t);
}
public void update(T t) {
getSession().update(t);
}
public void saveOrUpdate(T t) {
getSession().saveOrUpdate(t);
}
public SessionFactory getSessionFactory() {
return sessionFactory;
}
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public Session getCurrentSession() {
return sessionFactory.getCurrentSession();
}
}
你能幫助我嗎？哪裏有問題？
'@ PostConstruct'沒有給出所有東西都已經安裝完畢，通常你沒有事務設置。 –
手動事務管理很流行2003，請看'@ Transactional'註釋。 – Tobb
Tobb，如果您有任何可以改進我的代碼的地方，請告訴我更簡單一點，因爲我沒有明白您的意思。 – M314