私はJavaとHibernateを初めて使用します(RailsおよびC#開発者です)。とにかく、私はHibernateで正常に動作するテストプログラムを持っていますが、実際のWebアプリ(Struts 1)が次のようにクラッシュします。
SEVERE: Servlet.service() for servlet default threw exception Java.lang.NoSuchFieldError: INSTANCE
使ってます:
_Hibernate 3.6.1 with Annotations
_
_Struts 1 with Apache Tiles
_
_C3P0 connection pool
_
これが実際に[〜#〜] works [〜#〜]するプログラムです。これはメインプロジェクトの一部です。単純なJavaテストです。
_public class TestUser {
public static void main(String[] args) {
SessionFactory factory = HibernateUtil.getSessionFactory();
Session session = factory.getCurrentSession();
session.beginTransaction();
String queryString = "from User where UserName = 'Quake'";
Query query = session.createQuery(queryString);
User quake = (User)query.uniqueResult();
session.getTransaction().commit();
System.out.println( quake.getEmail() );
System.out.println( "Active? " + quake.isActive() );
UserRepository userRepo = new UserRepository();
System.out.println( "User Quake: " + userRepo.findAll().get(0).getEmail() );
}
}
_
うまく動作します。小さなサンプルデータを出力します。
今、Strutsで同じことを実行しようとすると、例外が発生します。これはNOT WORKが行うことです:
_public class ListUsers extends org.Apache.struts.action.Action {
/* forward name="success" path="" */
private static final String SUCCESS = "success";
/**
* This is the action called from the Struts framework.
* @param mapping The ActionMapping used to select this instance.
* @param form The optional ActionForm bean for this request.
* @param request The HTTP Request we are processing.
* @param response The HTTP Response we are processing.
* @throws Java.lang.Exception
* @return
*/
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
List<String> listMsg = new ArrayList<String>();
listMsg.add("Message A");
listMsg.add("Message B");
listMsg.add("Message C");
listMsg.add("Message D");
request.setAttribute("listMsg", listMsg);
UserRepository userRepo = new UserRepository(); // CRASHES HERE (see HibernateUtil)
String email = userRepo.first().getEmail();
return mapping.findForward(SUCCESS);
}
}
_
これは私のHibernateUtilクラスです:
_public class HibernateUtil {
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
// Create the SessionFactory from hibernate.cfg.xml
Configuration config = new Configuration(); // THIS LINE CRASHES IN STRUTS
// Add annotated classes
config.addAnnotatedClass(User.class);
config.configure();
return config.buildSessionFactory();
} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed. WTFQNIL: " + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}
_
HibernateUtil
のConfiguration config = new Configuration()
行は、Strutsでクラッシュしますが、テストアプリではクラッシュしない行です。
以下は完全な例外ダンプです。
_Feb 24, 2011 9:51:58 AM org.Apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet default threw exception
Java.lang.NoSuchFieldError: INSTANCE
at org.hibernate.type.BasicTypeRegistry.<init>(BasicTypeRegistry.Java:94)
at org.hibernate.type.TypeResolver.<init>(TypeResolver.Java:59)
at org.hibernate.cfg.Configuration.<init>(Configuration.Java:249)
at org.hibernate.cfg.Configuration.<init>(Configuration.Java:300)
at com.kencogroup.kkms.struts.utilities.HibernateUtil.buildSessionFactory(HibernateUtil.Java:22)
at com.kencogroup.kkms.struts.utilities.HibernateUtil.<clinit>(HibernateUtil.Java:17)
at com.kencogroup.dao.repositories.UserRepository.first(UserRepository.Java:33)
at com.kencogroup.kkms.struts.actions.ListUsers.execute(ListUsers.Java:52)
at org.Apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.Java:425)
at org.Apache.struts.action.RequestProcessor.process(RequestProcessor.Java:228)
at org.Apache.struts.action.ActionServlet.process(ActionServlet.Java:1913)
at org.Apache.struts.action.ActionServlet.doGet(ActionServlet.Java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.Java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.Java:717)
at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:290)
at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:206)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.Java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.Java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.Java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.Java:381)
at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:235)
at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.Java:393)
at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:235)
at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:206)
at org.Apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.Java:646)
at org.Apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.Java:436)
at org.Apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.Java:374)
at org.Apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.Java:302)
at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.Java:213)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.Java:171)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.Java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.Java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.Java:381)
at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:235)
at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.Java:393)
at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:235)
at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:206)
at org.Apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.Java:233)
at org.Apache.catalina.core.StandardContextValve.invoke(StandardContextValve.Java:191)
at org.Apache.catalina.core.StandardHostValve.invoke(StandardHostValve.Java:127)
at org.Apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.Java:102)
at org.Apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.Java:109)
at org.Apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.Java:298)
at org.Apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.Java:859)
at org.Apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.Java:579)
at org.Apache.Tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.Java:1555)
at Java.lang.Thread.run(Thread.Java:662)
_
何が悪いのですか?
ありがとう!
クラスパスにHibernate jarのいくつかのバージョンがあるようです。
これらの2つの依存関係を削除するとうまくいきました。
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>3.0.0.ga</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.3.0.ga</version>
</dependency>
これらは私の休止状態の依存関係です。
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.6.3.Final</version>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.17.1-GA</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm-all</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>antlr</groupId>
<artifactId>antlr</artifactId>
<version>2.7.7</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>3.6.3.Final</version>
</dependency>
@axtavtは正しいと言います。あなたはすでに問題を解決していると思います。他の人に役立つかもしれないので、コメントを投稿します。
Mavenの依存関係を使用している場合は、独自の休止状態の依存関係がすでにあるとします。その後、別の依存関係(org.codehaus.jacksonやdrools-springなど)がpomに追加されます。 org.codehaus.jacksonとdrools-springが異なるバージョンの休止状態に独自の依存関係を持っているため、このエラーが発生する可能性があります。 org.codehaus.jacksonを追加するときにhibernateを除外するか、drools-springが問題を解決します。