Ausnahme: Autowired Annotation erfordert mindestens ein Argument

Question

Ich habe diesen Fehler. Auf localhost ist alles in Ordnung. Der Fehler ist bei AWS. Was könnte der Grund sein?

HTTP Status 500 - Request processing failed; nested exception is java.lang.IllegalStateException: Autowired annotation requires at least one argument: public com.bartek.controllers.AppController() 

type Exception report 

message Request processing failed; nested exception is java.lang.IllegalStateException: Autowired annotation requires at least one argument: public com.bartek.controllers.AppController() 

description The server encountered an internal error that prevented it from fulfilling this request. 

exception 

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: Autowired annotation requires at least one argument: public com.bartek.controllers.AppController() 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) 
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622) 
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
root cause 

java.lang.IllegalStateException: Autowired annotation requires at least one argument: public com.bartek.controllers.AppController() 
    org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:296) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1069) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) 
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) 
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) 
    org.springframework.web.method.HandlerMethod.createWithResolvedBean(HandlerMethod.java:255) 
    org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:323) 
    org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:61) 
    org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:351) 
    org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1131) 
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:936) 
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) 
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622) 
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.39 logs. 

.

@Controller 
public class AppController { 

    @Autowired 
    public AppController(){ 
    } 

    SessionFactory sessionFactory = HibernateUtil.getSessionAnnotationFactory(); 

    @RequestMapping(path="/index", method=RequestMethod.GET) 
    public String index(){ 
     return "index"; 
    } 

    @RequestMapping(path="/addproject/add", method=RequestMethod.POST) 
    public String addProject(@ModelAttribute("person") Person person, Project project, Model model){ 

     Session session = sessionFactory.getCurrentSession(); 

     Person p = new Person(); 
     p.setName(person.getName()); 
     p.setSurname(person.getSurname()); 
     p.setIndex(person.getIndex()); 

     Project pr = new Project(); 
     pr.setContent(project.getContent()); 

     try { 
     session.beginTransaction(); 
     List<Person> listPersons = new ArrayList<Person>(); 
     listPersons.add(p); 

     pr.setPersons(listPersons); 

     session.save(pr);  
     session.save(p);   
     session.getTransaction().commit(); 
     } 
     catch (RuntimeException e) { 
      session.getTransaction().rollback(); 
      throw e; 
     } 
     return "redirect:/listprojects"; 
    } 

    @RequestMapping(path="/addproject", method=RequestMethod.GET) 
    public String start(){ 

     return "addproject"; 
    } 

    @RequestMapping(path="/listprojects", method=RequestMethod.GET) 
    public String getListProjects(Model model){ 

     Session session = sessionFactory.getCurrentSession(); 
     try { 
     session.beginTransaction(); 

     List<Project> listProjects = new ArrayList<Project>(); 
     listProjects = session.createCriteria(Project.class).list(); 

     model.addAttribute("lists", listProjects); 
     } 
     catch (RuntimeException e) { 
      session.getTransaction().rollback(); 
      throw e; 
     } 
     return "listprojects"; 
    } 

    @RequestMapping(path="/addperson", method=RequestMethod.GET) 
    public String addPersonSite(Model model){ 

     Session session = sessionFactory.getCurrentSession(); 
     try { 
     session.beginTransaction(); 

     List<Project> titleProjects = new ArrayList<Project>(); 
     titleProjects = session.createCriteria(Project.class).list(); 

     model.addAttribute("titleList", titleProjects); 
     } 
     catch (RuntimeException e) { 
      session.getTransaction().rollback(); 
      throw e; 
     } 
     return "addperson"; 
    } 

    @RequestMapping(path="/addperson/add", method={RequestMethod.POST,RequestMethod.GET}) 
    public String addPersonForm(@RequestParam(value = "nameProject", required=false) String nameProject, @ModelAttribute("person") Person person, Project project, Model model){ 

     int idProject; 
     List<Person> listPersons = new ArrayList<Person>(); 
     Session session = sessionFactory.getCurrentSession(); 

     Person p = new Person(); 
     p.setName(person.getName()); 
     p.setSurname(person.getSurname()); 
     p.setIndex(person.getIndex()); 

     try { 
     session.beginTransaction(); 

     List<Project> listProjects = new ArrayList<Project>(); 
     listProjects = session.createCriteria(Project.class).list(); 

     Project pr = new Project(); 

     for(Project pro : listProjects){ 
      if(pro.getContent().equals(nameProject)){ 
       idProject = (pro.getId() - 1);   
       pr = listProjects.get(idProject);  
       listPersons = listProjects.get(idProject).getPersons(); 
       listPersons.add(p); 
       pr.setPersons(listPersons); 
      } 
     } 

     session.saveOrUpdate(pr);  
     session.save(p);   
     session.getTransaction().commit(); 
     } 
     catch (RuntimeException e) { 
      session.getTransaction().rollback(); 
      throw e; 
     } 

     return "redirect:/listprojects"; 
    } 

} 

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Answer 1

Sie haben @Autowired auf Ihrem Standardkonstruktor festgelegt, was keinen Sinn macht. Es gibt nichts zu autowire, daher die Fehlermeldung.