Java TransientPropertyValueException:对象引用未保存的临时实例-在刷新之前保存临时实例
我正在尝试将用户详细信息存储到以下表中:user、role、user\u role。当试图保存详细信息时,它抛出以下错误 托管刷新期间出错 [org.hibernate.TransientPropertyValueException:对象引用 未保存的瞬态实例-在之前保存瞬态实例 冲洗 这里user_role是父表,user和role表是子表。我尝试使用cascade=cascade.ALL。尽管它会出现相同的错误 User.javaJava TransientPropertyValueException:对象引用未保存的临时实例-在刷新之前保存临时实例,java,mysql,hibernate,spring-boot,spring-jdbc,Java,Mysql,Hibernate,Spring Boot,Spring Jdbc,我正在尝试将用户详细信息存储到以下表中:user、role、user\u role。当试图保存详细信息时,它抛出以下错误 托管刷新期间出错 [org.hibernate.TransientPropertyValueException:对象引用 未保存的瞬态实例-在之前保存瞬态实例 冲洗 这里user_role是父表,user和role表是子表。我尝试使用cascade=cascade.ALL。尽管它会出现相同的错误 User.java @Entity public class User impl
@Entity
public class User implements UserDetails, Serializable{
private static final long serialVersionUID = 902783495L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name="Id", nullable=false, updatable = false)
private Long id;
private String username;
private String password;
private String email;
private boolean enabled = true;
@OneToMany(mappedBy = "user", cascade=CascadeType.ALL, fetch = FetchType.EAGER)
@JsonIgnore
private Set<UserRole> userRoles = new HashSet<>();
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
public Set<UserRole> getUserRoles() {
return userRoles;
}
public void setUserRoles(Set<UserRole> userRoles) {
this.userRoles = userRoles;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
Set<GrantedAuthority> authorities = new HashSet<>();
userRoles.forEach(ur -> authorities.add(new Authority(ur.getRole().getName())));
return authorities;
}
@Override
public boolean isAccountNonExpired() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isAccountNonLocked() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isCredentialsNonExpired() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isEnabled() {
return enabled;
}
}
在这里,role_id是主键,每次尝试将1设置为role_id时,使用 @身份证 @GeneratedValue(策略=GenerationType.AUTO)
private long seqNo;您是否也可以为您的项目包含UserDetails&pom.xml?另外,您是否确实需要创建Userrole实体?如果您更改此公共集getUserRoles(){return userRoles;},默认情况下应该创建该实体为Set而不是UserRole创建相同的关系。然后hibernate将创建一个名为User\u Role的新表,该表将包含User\u id和Role\u id id。只是尝试简化这里的设计。
@Entity
public class Role implements Serializable{
private static final long serialVersionUID = 890245234L;
@Id
private int roleId;
private String name;
@OneToMany(mappedBy = "role", cascade=CascadeType.ALL, fetch = FetchType.LAZY)
private Set<UserRole> userRoles = new HashSet<>();
public Role(){}
public int getRoleId() {
return roleId;
}
public void setRoleId(int roleId) {
this.roleId = roleId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<UserRole> getUserRoles() {
return userRoles;
}
public void setUserRoles(Set<UserRole> userRoles) {
this.userRoles = userRoles;
}
}
@Entity
@Table(name="user_role")
public class UserRole implements Serializable {
private static final long serialVersionUID = 890345L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long userRoleId;
public UserRole () {}
public UserRole (User user, Role role) {
this.user = user;
this.role = role;
}
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "user_id")
private User user;
@ManyToOne(fetch = FetchType.EAGER)
private Role role;
public long getUserRoleId() {
return userRoleId;
}
public void setUserRoleId(long userRoleId) {
this.userRoleId = userRoleId;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Role getRole() {
return role;
}
public void setRole(Role role) {
this.role = role;
}
}