Java 泽西岛2号和码头:检测到未知的HK2故障
我正试图用Jersey和Jetty编写一个REST应用程序。 堆栈:Java 11、Gradle 6.1.1、Jersey 2.30、Hibernate 5.4.X、Jetty服务器和servlet在9.4.26.v20200117版本中。 当HK2注入依赖项时出现问题。以下是错误日志:Java 泽西岛2号和码头:检测到未知的HK2故障,java,hibernate,rest,jersey,jetty,Java,Hibernate,Rest,Jersey,Jetty,我正试图用Jersey和Jetty编写一个REST应用程序。 堆栈:Java 11、Gradle 6.1.1、Jersey 2.30、Hibernate 5.4.X、Jetty服务器和servlet在9.4.26.v20200117版本中。 当HK2注入依赖项时出现问题。以下是错误日志: Feb 11, 2020 10:49:41 PM org.glassfish.jersey.internal.Errors logErrors WARNING: The following warnings h
Feb 11, 2020 10:49:41 PM org.glassfish.jersey.internal.Errors logErrors
WARNING: The following warnings have been detected: WARNING: Unknown HK2 failure detected:
MultiException stack 1 of 2
java.lang.ExceptionInInitializerError
...
这是Jetty的主要等级:
package com.familybank;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.HandlerCollection;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.glassfish.jersey.servlet.ServletContainer;
public class Application {
public static void main(String[] args) {
// Jersey
final var servletContextHandler = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
final var jerseyServletContainer = new ServletContainer(new ApplicationResourceConfiguration());
final var jerseyServletHolder = new ServletHolder(jerseyServletContainer);
servletContextHandler.setContextPath("/");
servletContextHandler.addServlet(jerseyServletHolder, "/api/*");
// Wire up Jetty
final var handlerList = new HandlerCollection();
handlerList.setHandlers(new Handler[]{ servletContextHandler });
final var server = new Server(8080);
server.setHandler(handlerList);
/*
final var uri = UriBuilder.fromUri("http://localhost/").port(8080).build();
final var server = JettyHttpContainerFactory.createServer(uri, new ApplicationResourceConfiguration());
*/
try {
server.start();
server.join();
} catch (Exception ex) {
// logger.error("Error occurred while starting Jetty", ex);
System.exit(1);
} finally {
server.destroy();
}
}
}
另外,ApplicationBinder:
public class ApplicationBinder extends AbstractBinder {
@Override
protected void configure() {
// DAO dependency injection
bind(UserDAO.class).to(UserDAO.class);
bind(PasswordDAO.class).to(PasswordDAO.class);
bind(RoleDAO.class).to(RoleDAO.class);
// Service dependency injection
bind(UserServiceImpl.class).to(UserService.class);
}
}
以及ApplicationResourceConfiguration:
public class ApplicationResourceConfiguration extends ResourceConfig {
public ApplicationResourceConfiguration() {
// register(UserController.class); // With or without the result is the same
register(new ApplicationBinder());
packages(true, "com.example");
// register(UserController.class);
}
}
另外,UserController看起来像:
@Path("/user")
public class UserController {
private static final Logger logger = LoggerFactory.getLogger(UserController.class);
private final UserService userService;
@Inject
public UserController(UserService userService) {
this.userService = userService;
}
@GET
@Path("/get-all")
@Produces(MediaType.APPLICATION_JSON)
public User getAll() {
logger.debug("GET /user/get-all");
return userService.getByLogin("some.user@example.com").orElseGet(User::new);
}
}
UserServiceImpl使用RoleDAO、PasswordDAO和UserDAO。DAO类使用EntityManagerFactory进入数据库
EntityManagerFactoryProvider类:
public class EntityManagerFactoryProvider {
private static EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("family-bank");
public static EntityManagerFactory getEntityManagerFactory() {
return entityManagerFactory;
}
}
项目还包含persistence.xml配置-它在其他项目中工作,所以应该可以
最奇怪的是,当我从IntelliJ运行项目时,它运行得很好。Jar构建和运行(不执行任何操作)看起来也不错,但当我从web浏览器调用url时,会出现阶梯:
然后HK2因依赖项注入而失败。我不知道怎么了。
如果有人需要,我可以发送异常的整个堆栈跟踪(没有放在那里,因为它的长度…)
如何配置Jersey 2和Jetty stuff在所描述的情况下工作?解决方案是只迁移到Tomcat。您可能希望在HK故障上包括两个堆栈跟踪。堆栈跟踪非常长(2156行)。链接到traces:paste.ofcode.org/34xbcxdknzaana69fnuuhv
java.lang.NoClassDefFoundError:无法初始化类com.example.configuration.EntityManagerFactoryProvider
。那个类中有静态初始值设定项吗?你能给我看看吗?在初始化过程中似乎出现了问题。@PaulSamsotha-我编辑了一个问题,添加了EntityManagerFactoryProvider。存在由Persistence.createEntityManagerFactory(…)方法初始化的静态字段。它如何影响HK2?。。。HK2无法创建EntityManagerFactoryProvider,因此无法创建链上的任何其他内容。创建EntityManagerFactory时可能会出现问题