0

私は例外を取得しています。リクエストの処理に失敗しました。ネストされた例外は org.springframework.data.mapping.PropertyReferenceException: No property start found for type.. このコードの何が問題なのかはわかりませんが、この原則をすべて使用してバックエンド側でほとんどすべてを実行しましたが、何かが欠けているようです。 .

コントローラ

@RequestMapping(value = "/pages/{pageNumber}", method = RequestMethod.GET)
public String getStories(@PathVariable Integer pageNumber, Model model) {

    Page<Article> page = frontService.getStories(pageNumber);

        int current = page.getNumber() + 1;
        int begin = Math.max(1, current - 5);
        int end = Math.min(begin + 10, page.getTotalPages());

        model.addAttribute("deploymentLog", page);
        model.addAttribute("beginIndex", begin);
        model.addAttribute("endIndex", end);
        model.addAttribute("currentIndex", current);

    return "NewFile";
}

サービス

public interface FrontStoryService {
     public Page<Article> getStories(Integer pageNumber);
}

ServiceImpl

@Service
@Transactional
public class FrontStoryServiceImpl implements FrontStoryService {
    private static final int PAGE_SIZE = 50;

    @Inject private FrontEndStoriesRepository storiesRepo;
    public Page<Article> getStories(Integer pageNumber) {
        PageRequest request =
                new PageRequest(pageNumber - 1, PAGE_SIZE, Sort.Direction.DESC, "startTime");
        System.out.println(request);
            return storiesRepo.findAll(request);

    }

}

レポ

@Repository("frontService")
public interface FrontEndStoriesRepository extends JpaRepository<Article, Long> { }

エラー：

org.springframework.data.mapping.PropertyReferenceException: No property start found for type com.jwlayug.atriev.model.Article
org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:75)
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327)
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:307)
org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:271)
org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:245)
org.springframework.data.jpa.repository.query.QueryUtils.toJpaOrder(QueryUtils.java:401)
org.springframework.data.jpa.repository.query.QueryUtils.toOrders(QueryUtils.java:365)
org.springframework.data.jpa.repository.support.SimpleJpaRepository.getQuery(SimpleJpaRepository.java:449)
org.springframework.data.jpa.repository.support.SimpleJpaRepository.getQuery(SimpleJpaRepository.java:430)
org.springframework.data.jpa.repository.support.SimpleJpaRepository.findAll(SimpleJpaRepository.java:312)
org.springframework.data.jpa.repository.support.SimpleJpaRepository.findAll(SimpleJpaRepository.java:282)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:333)
org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:318)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.data.jpa.repository.support.LockModeRepositoryPostProcessor$LockModePopulatingMethodIntercceptor.invoke(LockModeRepositoryPostProcessor.java:92)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
com.sun.proxy.$Proxy43.findAll(Unknown Source)
com.jwlayug.atriev.service.FrontStoryServiceImpl.getStories(FrontStoryServiceImpl.java:25)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
com.sun.proxy.$Proxy44.getStories(Unknown Source)
com.jwlayug.atriev.controller.FrontController.getStories(FrontController.java:39)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:180)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

モデル

import org.hibernate.annotations.Type;
@Entity
@Table(name="tblArticle")
public class Article {
    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private Long articleID; 
    private String title;
    private String author;
    @Type(type="text")
    private String content;
    @Temporal(TemporalType.TIMESTAMP)
    @Column(nullable=false)
    private Date dateCreated;
    @Temporal(TemporalType.TIMESTAMP)
    @Column(nullable=false)
    private Date dateUpdated;
    private boolean publish;
    private boolean send;
    @ManyToOne(targetEntity=UserSession.class,cascade=CascadeType.ALL)
    private UserSession userSession;
    @OneToMany(mappedBy="mail", cascade=CascadeType.ALL,fetch=FetchType.LAZY)
    private List<Recipient> sendEmail = new ArrayList<Recipient>();
    @ManyToOne(targetEntity=Media.class,cascade=CascadeType.ALL)
    private Media media;
    public Article(){}


    public Article(String title, String author,
            String content,UserSession userSession) {
        super();


        this.title = title;
        this.author = author;
        this.content = content;
        this.dateCreated = new Date();
        this.dateUpdated = new Date();
        this.send = false;
        this.publish = false;
        this.userSession = userSession;

    }


    public Long getArticleID() {
        return articleID;
    }


    public String getAuthor() {
        return author;
    }


    public String getContent() {
        return content;
    }
    public Date getDateCreated() {
        return dateCreated;
    }

    public Date getDateUpdated() {
        return dateUpdated;
    }
    public Media getMedia() {
        return media;
    }
    public List<Recipient> getSendEmail() {
        return sendEmail;
    }
    public String getTitle() {
        return title;
    }
    public UserSession getUserSession() {
        return userSession;
    }
    public boolean isPublish() {
        return publish;
    }
    public boolean isSend() {
        return send;
    }
    public void setArticleID(Long articleID) {
        this.articleID = articleID;
    }
    public void setAuthor(String author) {
        this.author = author;
    }
    public void setContent(String content) {
        this.content = content;
    }
    public void setDateCreated(Date dateCreated) {
        this.dateCreated = dateCreated;
    }
    public void setDateUpdated(Date dateUpdated) {
        this.dateUpdated = dateUpdated;
    }
    @PrePersist
    protected void onCreate() {
        dateUpdated = dateCreated = new Date();
    }

    @PreUpdate
    protected void onUpdate() {
        dateUpdated = new Date();
    }
    public void setMedia(Media media) {
        this.media = media;
    }


    public void setPublish(boolean publish) {
        this.publish = publish;
    }




    public void setSend(boolean send) {
        this.send = send;
    }


    public void setSendEmail(List<Recipient> sendEmail) {
        this.sendEmail = sendEmail;
    }


    public void setTitle(String title) {
        this.title = title;
    }


    public void setUserSession(UserSession userSession) {
        this.userSession = userSession;
    }


}
4

1 に答える 1

0

あなたのコードは、記事を で並べたいと言っていますstartTime。

例外はそうではないことを示しています。これは、実際に記事を でソートしたいことを示していますstart。

いずれにしても、例外が示すように、プロパティstartやstartTimeアーティクルがないため、どちらも機能しません。そのため、記事を並べ替えることができません。startまたはstartTime、記事がないためです。

于 2013-11-06T07:00:14.763 に答える