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Spring Boot应用程序连接不起作用

分类：编程问答

如何解决Spring Boot应用程序连接不起作用

我在user和authority之间的加入似乎无效。

这是我的课程：

@Entity
@Table(name="users")
public class User {
    
    public static final PasswordEncoder PASSWORD_ENCODER = new BCryptPasswordEncoder();
    
    @OnetoMany(mappedBy="user",cascade={CascadeType.PERSIST,CascadeType.MERGE,CascadeType.DETACH,CascadeType.REFRESH,CascadeType.REMOVE})
    private List<Authority> authorities;

    // define fields
    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="id")
    private int id;
...


@Entity
@Table(name="authorities")
public class Authority {    

    @EmbeddedId
    private AuthorityId id;

    @ManyToOne(cascade= {CascadeType.PERSIST,CascadeType.REFRESH})
    @JoinColumn(name="member_email",referencedColumnName="email",insertable=false,updatable=false)
    private User user;
    
    public Authority() {
        
    }

    public Authority(AuthorityId id,User user,String email,String authority) {
        this.id = id;
        this.user = user;
    }

    public AuthorityId getId() {
        return id;
    }

    public void setId(AuthorityId id) {
        this.id = id;
    }

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

    public String getEmail() {
        return id.getEmail();
    }

    public void setEmail(String email) {
        this.id.setEmail(email);
    }

    public String getAuthority() {
        return id.getAuthority();
    }

    public void setAuthority(String authority) {
        this.id.setAuthority(authority);
    }

    @Override
    public String toString() {
        return "Authority [user=" + user + ",email=" + id.getEmail() + ",authority=" + id.getAuthority() + "]";
    }

}

我尝试将referencedColumnName=email添加到我的权限JoinColumn中，但是无法登录。可能与我的Serializable类有关吗？

@Embeddable
public class AuthorityId implements Serializable {

    @Column(name="email")
    private String email;
    
    @Column(name="authority")
    private String authority;
    
    public AuthorityId() {
        
    }

    public AuthorityId(String email,String authority) {
        this.email = email;
        this.authority = authority;
    }

    public String getEmail() {
        return email;
    }
    
    public void setEmail(String email) {
        this.email = email;
    }

    public String getAuthority() {
        return authority;
    }

    public void setAuthority(String authority) {
        this.authority = authority;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof AuthorityId)) return false;
        AuthorityId that = (AuthorityId) o;
        return Objects.equals(getEmail(),that.getEmail()) &&
                Objects.equals(getAuthority(),that.getAuthority());
    }
 
    // equals/hashCode based on all data(email and authority)
    @Override
    public int hashCode() {
        return Objects.hash(getEmail(),getAuthority());
    }

}

其他信息

这是我删除insertable=false,updatable=false时的错误：


org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'eventRepository' defined in com.paulcarron.clubmanager.dao.EventRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Cannot resolve reference to bean 'jpaMappingContext' while setting bean property 'mappingContext'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method Failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.paulcarron.clubmanager.entity.Authority column: member_email (should be mapped with insert="false" update="false")
    at org.springframework.beans.factory.support.BeanDeFinitionValueResolver.resolveReference(BeanDeFinitionValueResolver.java:342) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.BeanDeFinitionValueResolver.resolveValueIfNecessary(BeanDeFinitionValueResolver.java:113) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.applyPropertyValues(AbstractAutowireCapablebeanfactory.java:1697) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.populateBean(AbstractAutowireCapablebeanfactory.java:1442) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:593) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.Abstractbeanfactory.lambda$doGetBean$0(Abstractbeanfactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.DefaultListablebeanfactory.getBeansOfType(DefaultListablebeanfactory.java:624) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.DefaultListablebeanfactory.getBeansOfType(DefaultListablebeanfactory.java:612) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.data.repository.config.DeferredRepositoryInitializationListener.onApplicationEvent(DeferredRepositoryInitializationListener.java:51) ~[spring-data-commons-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.data.repository.config.DeferredRepositoryInitializationListener.onApplicationEvent(DeferredRepositoryInitializationListener.java:36) ~[spring-data-commons-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:898) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
    at com.paulcarron.clubmanager.ClubmanagerApplication.main(ClubmanagerApplication.java:10) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.3.4.RELEASE.jar:2.3.4.RELEASE]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method Failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.paulcarron.clubmanager.entity.Authority column: member_email (should be mapped with insert="false" update="false")
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.initializeBean(AbstractAutowireCapablebeanfactory.java:1794) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:594) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.Abstractbeanfactory.lambda$doGetBean$0(Abstractbeanfactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.beans.factory.support.BeanDeFinitionValueResolver.resolveReference(BeanDeFinitionValueResolver.java:330) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    ... 33 common frames omitted
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.paulcarron.clubmanager.entity.Authority column: member_email (should be mapped with insert="false" update="false")
    at org.springframework.orm.jpa.AbstractEntityManagerfactorybean.buildNativeEntityManagerFactory(AbstractEntityManagerfactorybean.java:403) ~[spring-orm-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na]
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na]
    at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.paulcarron.clubmanager.entity.Authority column: member_email (should be mapped with insert="false" update="false")
    at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:862) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:880) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:902) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:634) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.mapping.RootClass.validate(RootClass.java:267) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.boot.internal.Metadataimpl.validate(Metadataimpl.java:354) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:465) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerfactorybean.createNativeEntityManagerFactory(LocalContainerEntityManagerfactorybean.java:365) ~[spring-orm-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerfactorybean.buildNativeEntityManagerFactory(AbstractEntityManagerfactorybean.java:391) ~[spring-orm-5.2.9.RELEASE.jar:5.2.9.RELEASE]
    ... 4 common frames omitted

这是我的表格示意图：

enter image description here

我不确定为什么这不起作用。任何帮助将不胜感激。

解决方法

以下映射对我有用：

@Entity
@Table(name = "authorities")
public class Authority
{
   private AuthorityId id;
   private User user;
   
   public Authority()
   {
   }

   public Authority(String email,String authority)
   {
      this.id = new AuthorityId();
      this.id.setEmail(email);
      this.id.setAuthority(authority);
   }
   
   @EmbeddedId
   public AuthorityId getId()
   {
      return id;
   }
   public void setId(AuthorityId id)
   {
      this.id = id;
   }

   @ManyToOne
   @JoinColumn(name = "member_email",referencedColumnName = "email",insertable = false,updatable = false)
   public User getUser()
   {
      return user;
   }
   public void setUser(User user)
   {
      this.user = user;
   }
}

@Embeddable
public class AuthorityId implements Serializable
{
   private String email;
   private String authority;
   
   public AuthorityId()
   {
   }

   @Column(name = "member_email")
   public String getEmail()
   {
      return email;
   }
   public void setEmail(String email)
   {
      this.email = email;
   }

   @Column(name = "authority")
   public String getAuthority()
   {
      return authority;
   }
   public void setAuthority(String authority)
   {
      this.authority = authority;
   }

   // equals and hashCode
}

@Entity
@Table(name = "users")
public class User implements Serializable
{
   private Integer id;
   private String name;
   private String email;
   private List<Authority> authorities;
   
   public User()
   {
      authorities = new ArrayList<>();
   }

   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
   @Column(name = "id")
   public Integer getId()
   {
      return id;
   }
   public void setId(Integer id)
   {
      this.id = id;
   }

   @NaturalId
   @Column(name = "email")
   public String getEmail()
   {
      return email;
   }
   public void setEmail(String email)
   {
      this.email = email;
   }

   @OneToMany(mappedBy = "user",cascade = CascadeType.ALL)
   public List<Authority> getAuthorities()
   {
      return authorities;
   }
   public void setAuthorities(List<Authority> authorities)
   {
      this.authorities = authorities;
   }
   
   public void addAuthority(Authority auth)
   {
      authorities.add(auth);
      auth.setUser(this);
   }
}

和简单的持久动作：

String email = "emeil2@gmail.com";

User user = new User();
user.setEmail(email);
     
Authority auth1 = new Authority(email,"auth2");
Authority auth2 = new Authority(email,"auth3");
Authority auth3 = new Authority(email,"auth4");
      
user.addAuthority(auth1);
user.addAuthority(auth2);
user.addAuthority(auth3);
      
em.persist(user);

将生成以下sql查询：

/* insert com.my.hibernate.entities.User */
insert into TEST_SCHEMA.USERS (email) 
values (?)

/* insert com.sternkn.hibernate.entities.Authority */
insert into TEST_SCHEMA.AUTHORITIES (authority,member_email)
values (?,?)

/* insert com.sternkn.hibernate.entities.Authority */
insert into TEST_SCHEMA.AUTHORITIES (authority,?)

它已通过休眠版本5.4.10进行了测试。最终

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