1
我試圖讓EJB與Glassfish v3一起工作。我正在使用Servlet開發Java EE Web應用程序。Glassfish的EJB JNDI
當我部署此Web應用程序到GlassFish，它註冊EJB類到
java:global JNDI樹。但是，當我嘗試將這個實例注入到我的
Servlet中時，我得到了NameNotFoundException。
當我查看服務器的日誌時，Servlet會嘗試在java:comp/env中查找。
有人可以幫我解決這個問題嗎？
爲登錄部相關的代碼：
UserDao.java
@Local
public interface UserDao {
public User find(Long id);
public List<User> findAll();
public List<User> paginate(int offset, int nbentry) throws IllegalArgumentException, IllegalStateException;
public User findUserByUsernameAndPassword(String username, String password);
public User create(User user) throws UserException;
public User update(User user) throws UserException;
public Boolean delete(User user) throws UserException;
public int count();
}
JpaUserDao.java
@Stateless
public class JpaUserDao implements UserDao {
private Logger log = Logger.getLogger(JpaUserDao.class.getSimpleName());
@PersistenceContext(unitName = "YouFood-PU")
private EntityManager em;
@Override
public User create(User user) throws UserException {
try {
em.persist(user);
} catch (Exception e) {
throw new UserException("Creation of the user: " + user
+ " failed, please try later or contact the webmaster");
}
return user;
}
@Override
public User update(User user) throws UserException {
try {
em.persist(em.merge(user));
} catch (Exception e) {
throw new UserException("Update of the user: " + user
+ " failed, please try later or contact the webmaster");
}
return user;
}
@Override
public Boolean delete(User user) throws UserException {
try {
em.remove(em.merge(user));
return true;
} catch (Exception e) {
throw new UserException("Deletion of the user: " + user
+ " failed, please try later or contact the webmaster");
}
}
@Override
public User find(Long id) {
User user = new User();
try {
user = em.find(User.class, id);
return user;
} catch (Exception e) {
return null;
}
}
@Override
public User findUserByUsernameAndPassword(String username, String password) {
User user = null;
try {
log.info("findUserByUsernameAndPassword");
user = (User) em
.createQuery(
"SELECT u FROM User AS u where u.username = :username AND u.password = :password ")
.setParameter("username", username)
.setParameter("password", password).getSingleResult();
return user;
} catch (Exception e) {
e.printStackTrace();
log.severe(e.getStackTrace().toString());
return null;
}
}
@SuppressWarnings("unchecked")
@Override
public List<User> findAll() {
List<User> users = null;
try {
users = (List<User>) em.createQuery("SELECT u FROM User u")
.getResultList();
return users;
} catch (Exception e) {
return null;
}
}
@SuppressWarnings("unchecked")
@Override
public List<User> paginate(int offset, int nbentry)
throws IllegalArgumentException, IllegalStateException {
List<User> users = null;
users = (List<User>) em.createQuery("FROM User").setFirstResult(offset)
.setMaxResults(nbentry).getResultList();
return users;
}
@Override
public int count() {
Number count;
count = (Number) em.createQuery("SELECT COUNT(u.id) FROM User")
.getSingleResult();
return count.intValue();
}
}
Authenticator.java
@Stateless
public class Authenticator {
private String userFullName;
private Long userId;
@EJB
private JpaUserDao userDao;
public Authenticator() {}
public AuthenticationError connect(String username, String password)
throws Exception {
String hashed_password = Authenticator.hash(password, "UTF-8");
User user = null;
user = userDao.findUserByUsernameAndPassword(username,
hashed_password);
if (user == null) {
return AuthenticationError.UserNotFound;
}
this.userFullName = user.toString();
this.userId = user.getId();
return AuthenticationError.Success;
}
public Boolean disconnect(HttpSession session) throws Exception {
try {
session.invalidate();
return true;
} catch (Exception e) {
return false;
}
}
public String getUserFullName() {
return this.userFullName;
}
public Long getUserId() {
return this.userId;
}
/**
*
* Static method
*
* @throws Exception
*
*/
public static String hash(String data, String charset) throws Exception {
MessageDigest md = MessageDigest.getInstance("MD5");
md.reset();
md.update(data.getBytes(charset), 0, data.length());
String hash = new BigInteger(1, md.digest()).toString(16);
return hash;
}
}
LoginServlet.java
@WebServlet("/login")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private Logger log = Logger.getLogger(LoginServlet.class.getSimpleName());
@EJB
private Authenticator auth;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
log.info("LoginServlet.deGet() call");
request.getRequestDispatcher("/jsp/login.jsp").forward(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//auth = new Authenticator();
log.info("LoginServlet.dePost() call");
String message = null;
String username = request.getParameter("username");
String password = request.getParameter("password");
log.info("username: " + username);
log.info("password: " + password);
try {
AuthenticationError status = auth.connect(username, password);
System.out.println(status);
switch (status) {
case PasswordMissMatch:
message = "Password missmatch";
log.info(message);
request.setAttribute("error", message);
request.getRequestDispatcher("/jsp/login.jsp").forward(request, response);
break;
case Success:
message = "Your are successfully logged in";
log.info(message);
request.setAttribute("success", message);
request.getSession().setAttribute("loggedIn", true);
request.getSession().setAttribute("full_name", auth.getUserFullName());
request.getSession().setAttribute("user_id", auth.getUserId());
break;
case UserNotFound:
message = "Username provided not found in our record";
log.info(message);
request.setAttribute("error", message);
request.getRequestDispatcher("/jsp/login.jsp").forward(request, response);
break;
}
} catch (GeneralSecurityException e) {
message = e.getMessage();
request.setAttribute("error", message);
} catch (Exception e) {
message = e.getMessage();
request.setAttribute("error", message);
}
request.getRequestDispatcher("/home").forward(request, response);
}
}
Glassfish的部署日誌
INFO: closing
ATTENTION: DPL8027: Ignore WEB-INF/sun-web.xml in archive
/Users/guillaume/Documents/workspace/Supinfo/YouFood/nbbuild/web/, as GlassFish
counterpart runtime xml WEB-INF/glassfish-web.xml is present in the same
archive.
INFO: Processing PersistenceUnitInfo [
name: YouFood-PU
...]
INFO: Binding entity from annotated class: com.youfood.entity.Menu
INFO: Bind entity com.youfood.entity.Menu on table Menu
INFO: Binding entity from annotated class: com.youfood.entity.DinningRoom
INFO: Bind entity com.youfood.entity.DinningRoom on table DinningRoom
INFO: Binding entity from annotated class: com.youfood.entity.Item
INFO: Bind entity com.youfood.entity.Item on table Item
INFO: Binding entity from annotated class: com.youfood.entity.TTable
INFO: Bind entity com.youfood.entity.TTable on table TTable
INFO: Binding entity from annotated class: com.youfood.entity.Zone
INFO: Bind entity com.youfood.entity.Zone on table Zone
INFO: Binding entity from annotated class: com.youfood.entity.Country
INFO: Bind entity com.youfood.entity.Country on table Country
INFO: Binding entity from annotated class: com.youfood.entity.User
INFO: Bind entity com.youfood.entity.User on table User
INFO: Binding entity from annotated class: com.youfood.entity.Order
INFO: Bind entity com.youfood.entity.Order on table OrderTable
INFO: Binding entity from annotated class: com.youfood.entity.Restaurant
INFO: Bind entity com.youfood.entity.Restaurant on table Restaurant
INFO: Mapping collection: com.youfood.entity.DinningRoom.zones -> Zone
INFO: Mapping collection: com.youfood.entity.Zone.tables -> TTable
INFO: Mapping collection: com.youfood.entity.Country.restaurants -> Restaurant
INFO: Mapping collection: com.youfood.entity.Restaurant.dinningRoom -> DinningRoom
INFO: Hibernate Validator not found: ignoring
INFO: Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
INFO: Initializing connection provider: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider
INFO: Using provided datasource
INFO: RDBMS: MySQL, version: 5.1.54
INFO: JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.13 (Revision: ${bzr.revision-id})
INFO: Using dialect: org.hibernate.dialect.MySQLDialect
INFO: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
INFO: Transaction strategy: org.hibernate.ejb.transaction.JoinableCMTTransactionFactory
INFO: instantiating TransactionManagerLookup: org.hibernate.transaction.SunONETransactionManagerLookup
INFO: instantiated TransactionManagerLookup
INFO: Automatic flush during beforeCompletion(): disabled
INFO: Automatic session close at end of transaction: disabled
INFO: JDBC batch size: 15
INFO: JDBC batch updates for versioned data: disabled
INFO: Scrollable result sets: enabled
INFO: JDBC3 getGeneratedKeys(): enabled
INFO: Connection release mode: auto
INFO: Maximum outer join fetch depth: 2
INFO: Default batch fetch size: 1
INFO: Generate SQL with comments: disabled
INFO: Order SQL updates by primary key: disabled
INFO: Order SQL inserts for batching: disabled
INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
INFO: Using ASTQueryTranslatorFactory
INFO: Query language substitutions: {}
INFO: JPA-QL strict compliance: enabled
INFO: Second-level cache: enabled
INFO: Query cache: disabled
INFO: Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
INFO: Optimize cache for minimal puts: disabled
INFO: Structured second-level cache entries: disabled
INFO: Statistics: disabled
INFO: Deleted entity synthetic identifier rollback: disabled
INFO: Default entity-mode: pojo
INFO: Named query checking : enabled
INFO: Check Nullability in Core (should be disabled when Bean Validation is on): disabled
INFO: building session factory
INFO: Not binding factory to JNDI, no JNDI name configured
INFO: JNDI InitialContext properties:{}
INFO: EJB5181:Portable JNDI names for EJB JpaUserDao: [java:global/YouFood/JpaUserDao, java:global/YouFood/JpaUserDao!com.youfood.dao.UserDao]
INFO: EJB5181:Portable JNDI names for EJB Authenticator: [java:global/YouFood/Authenticator!com.youfood.backoffice.utils.Authenticator, java:global/YouFood/Authenticator]
INFO: WEB0671: Loading application [YouFood] at [/web]
INFO: YouFood a été déployé en 1 279 ms.
服務器日誌異常
GRAVE: EJB5070: Exception creating stateless session bean : [Authenticator]
ATTENTION: EJB5184:A system exception occurred during an invocation on EJB Authenticator, method: public com.youfood.backoffice.utils.AuthenticationError com.youfood.backoffice.utils.Authenticator.connect(java.lang.String,java.lang.String) throws java.lang.Exception
ATTENTION: javax.ejb.EJBException: javax.ejb.EJBException: javax.ejb.CreateException: Could not create stateless EJB
at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:454)
at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:2547)
at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1899)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at $Proxy150.connect(Unknown Source)
at com.youfood.backoffice.utils.__EJB31_Generated__Authenticator__Intf____Bean__.connect(Unknown Source)
at com.youfood.backoffice.servlet.LoginServlet.doPost(LoginServlet.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:680)
Caused by: javax.ejb.EJBException: javax.ejb.CreateException: Could not create stateless EJB
at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:726)
at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:247)
at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:449)
... 39 more
Caused by: javax.ejb.CreateException: Could not create stateless EJB
at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:534)
at com.sun.ejb.containers.StatelessSessionContainer.access$000(StatelessSessionContainer.java:95)
at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:724)
... 41 more
Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Exception lors de la tentative d'injection de l'élément Remote ejb-ref name=com.youfood.backoffice.utils.Authenticator/userDao,Remote 3.x interface =com.youfood.dao.jpa.JpaUserDao,ejb-link=null,lookup=,mappedName=,jndi-name=com.youfood.dao.jpa.JpaUserDao,refType=Session dans class com.youfood.backoffice.utils.Authenticator : Lookup failed for 'java:comp/env/com.youfood.backoffice.utils.Authenticator/userDao' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming}
at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:703)
at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.inject(InjectionManagerImpl.java:470)
at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:171)
at com.sun.ejb.containers.BaseContainer.injectEjbInstance(BaseContainer.java:1694)
at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:494)
... 43 more
Caused by: javax.naming.NamingException: Lookup failed for 'java:comp/env/com.youfood.backoffice.utils.Authenticator/userDao' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=com.youfood.backoffice.utils.Authenticator/userDao,Remote 3.x interface =com.youfood.dao.jpa.JpaUserDao,ejb-link=null,lookup=,mappedName=,jndi-name=com.youfood.dao.jpa.JpaUserDao,refType=Session' . Actual (possibly internal) Remote JNDI name used for lookup is 'com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao' [Root exception is javax.naming.NamingException: Lookup failed for 'com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NameNotFoundException: com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao not found]]]
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:518)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:455)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:599)
... 47 more
Caused by: javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=com.youfood.backoffice.utils.Authenticator/userDao,Remote 3.x interface =com.youfood.dao.jpa.JpaUserDao,ejb-link=null,lookup=,mappedName=,jndi-name=com.youfood.dao.jpa.JpaUserDao,refType=Session' . Actual (possibly internal) Remote JNDI name used for lookup is 'com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao' [Root exception is javax.naming.NamingException: Lookup failed for 'com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NameNotFoundException: com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao not found]]
at com.sun.ejb.EjbNamingReferenceManagerImpl.resolveEjbReference(EjbNamingReferenceManagerImpl.java:191)
at com.sun.enterprise.container.common.impl.ComponentEnvManagerImpl$EjbReferenceProxy.create(ComponentEnvManagerImpl.java:1109)
at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:776)
at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:744)
at com.sun.enterprise.naming.impl.JavaURLContext.lookup(JavaURLContext.java:169)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:498)
... 51 more
Caused by: javax.naming.NamingException: Lookup failed for 'com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NameNotFoundException: com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao not found]
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:518)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:455)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at com.sun.ejb.EjbNamingReferenceManagerImpl.resolveEjbReference(EjbNamingReferenceManagerImpl.java:186)
... 56 more
Caused by: javax.naming.NameNotFoundException: com.youfood.dao.jpa.JpaUserDao#com.youfood.dao.jpa.JpaUserDao not found
at com.sun.enterprise.naming.impl.TransientContext.doLookup(TransientContext.java:248)
at com.sun.enterprise.naming.impl.TransientContext.lookup(TransientContext.java:215)
at com.sun.enterprise.naming.impl.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:77)
at com.sun.enterprise.naming.impl.LocalSerialContextProviderImpl.lookup(LocalSerialContextProviderImpl.java:119)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:505)
... 60 more
我的代碼看起來像寫了@Arjan Tijms，由於某種原因，我的第一個項目與EJB工作很好我使用了基本註釋，它運行良好，但在我的第二個項目中，我做了相同的實現，它不能按預期工作... – 2012-03-21 00:43:22
查看我的更新回答 – 2012-03-21 20:19:46
這就是工作謝謝你！好吧，我開始理解，在@ Stateless/@ Stateful註釋類中，我必須注入接口而不是實現，但沒有它們（如Servlet），我注入實現的接口（如JpaUserDao），是嗎？ PS：爲了驗證你對我的測試是否正確，請完成這項工作，但是你是否有一些很好的做法/想法來教我認證？ – 2012-03-22 03:14:10