Question

我想更新/编辑我的数据库信息。但是当我试图这样做时，它显示错误：

执行例外

发生PersistenceException：   org.hibernate.PersistentObjectException：传递给的分离实体   坚持：models.User

我的模特是：

@Entity
public class User extends Model implements RoleHolder {
    @Required
    @Unique
    @MaxSize(120)
    @Email
    public String email;

    @Required
    @Unique
    @MaxSize(15)
    @MinSize(4)
    @Match(value = "^\\w*$", message = "Not a valid username")
    public String name;

    @Required
    @MaxSize(15)
    @MinSize(4)
    @Match(value = "[^=]*", message = "Not a valid password")
    @Password
    public String password;

    @Transient
    @Equals(value = "password", message = "Password doesn't match")
    @Password
    public String confirmPassword;

    @MaxSize(100)
    public String displayName;

    @Required
    @ManyToOne
    public Role role;

    @Required
    @ManyToOne
    public SchoolInformation school;

    @Required
    @ManyToOne
    public Ngo ngo;

    /* GEO-location Hierarchy */
    @ManyToOne
    public GeoDivision geoDivision;
    @ManyToOne
    public GeoDistrict geoDistrict;
    @ManyToOne
    public GeoUpazilla geoUpazilla;

    /**
     * @param email
     * @param password
     */
    public User(String email, String password) {
        this.email = email;
        this.password = password;
        /* this.geoPSUs = new TreeSet<GeoPSU>(); */
    }

    /**
     * @param email
     * @param password
     * @param name
     */
    public User(String email, String password, String name) {
        this(email, password);
        this.name = name;
    }

    public User(String email, String password, String name, Role role) {
        this(email, password, name);
        this.role = role;
    }

    // From RoleHolder Interface
    @Override
    public List<? extends Role> getRoles() {
        List<Role> list = new ArrayList<Role>();
        list.add(this.role);
        return list;
    }

    /**
     * Authenticate.
     *
     * @param username
     *            the username
     * @param password
     *            the password
     * @return the user
     */
    public static User authenticate(String username, String password) {
        return User.find("byNameAndPassword", username, Crypto.passwordHash(password, HashType.SHA512)).first();
    }

    /**
     * Find User by name
     */
    public static User findByName(String name) {
        return User.find("byName", name).first();
    }

    /**
     * Before save a User
     */
    @PrePersist
    @PreUpdate
    public void beforeSave() {
        updatePassword();
    }

    /**
     * Update password by its hash value
     */
    private void updatePassword() {
        Logger.info("password set for " + this);
        this.password = Crypto.passwordHash(this.password, HashType.SHA512);
    }

    /**
     * Return list of User with given role
     */
    public static List<User> getRoleUser(Role role) {
        return User.find("role = ?", role).fetch();
    }

    @Override
    public String toString() {
        return this.id + " " + this.name + " " + this.email + " ";
    }

    public static User findByLogin(String username) {
        return User.find("byName", username).first();
    }

    public static List<User> findFsByDsUser(long dsId) {
        return User.find("byDs_id", dsId).fetch();
    }

    public static List<User> findEnumeratorByFsUser(long fsId) {
        return User.find("byFs_id", fsId).fetch();
    }

    public static List<User> findAllEnumeratorUsers() {
        return User.find("byRole_id", 4).fetch();
    }

    public boolean isAdmin() {
        return role.equals(Role.getAdminRole());
    }

    public boolean isEnumerator() {
        return role.equals(Role.getEnumeratorRole());
    }

    /**
     * Return parent User. From Edmis hierarchy, M&H for M&C, M&C for DM, DM for
     * FF, otherwise null
     */
    public User getParentUser() {
        User parentUser = null;
        return parentUser;
    }

    public static List<User> getChildEnumerators(User loggedInUser) {
        List<User> enumList = new ArrayList<User>();
        List<User> users = User.findAll();

        for (User user : users) {
            if (user.getParentUser().equals(loggedInUser)
                    || user.getParentUser().getParentUser().equals(loggedInUser)) {
                enumList.add(user);
            }
        }
        return enumList;
    }

    public void update(Long id) {

        String qString = null ;
        Connection conn = play.db.DB.getConnection();
        ResultSet rs = null;
    }
}

我的控制器是：

@ExternalRestrictions("Edit User")
   public static void edit(Long id) {

        User user = User.findById(id);
        flash("user", "" + user.id);
        notFoundIfNull(user, "user not found");
        user.password = null;
        List<Role> roles = Role.findAll();
        List<SchoolInformation> schoolList = SchoolInformation.find("approavedStatus = ? ", "Approved").fetch();
        List<Ngo> ngoList = Ngo.findAll();

        List<GeoDivision> geoDivisionList = GeoDivision.findAll();
        List<GeoDistrict> geoDistrictList = GeoDistrict.findAll();
        List<GeoUpazilla> geoUpazillaList = GeoUpazilla.findAll();
        render(user,schoolList,ngoList, roles,geoDivisionList,geoDistrictList,geoUpazillaList);
    }

    @ExternalRestrictions("Edit User")
   public static void submit(@Valid User user) {
        Logger.info("flashUserId in Submit: " + flash.get("user"));
        validation.valid(user);
        if(validation.hasErrors() && flash.get("user") == null) {
            List<Role> roles = Role.findAll();
            Logger.info("hasError");
            render("@edit", user, roles);
        }
        if(flash.get("user") != null){
            User editedUser = User.findById(Long.parseLong(flash.get("user")));
            editedUser.name = user.name;
            editedUser.id = user.id;
            //Logger.info("updated username : " + editedUser.name);
            editedUser.displayName = user.displayName;
            editedUser.email = user.email;
            editedUser.role.id = user.role.id;
            editedUser.school.id = user.school.id;
            editedUser.ngo.id = user.ngo.id;
            editedUser.geoDivision.id = user.geoDivision.id;
            editedUser.geoDistrict.id = user.geoDistrict.id;
            editedUser.geoUpazilla.id = user.geoUpazilla.id;
            Logger.info("name: " + editedUser.name + " displayname: " + editedUser.displayName + " email: " + editedUser.email + " role: " + editedUser.role.id + " ngoId: " + editedUser.ngo.id + " geoDivisionId: " 
            + editedUser.geoDivision.id + " geoDistrictId: "+ editedUser.geoDistrict.id + " geoUpazilaId: "+ editedUser.geoUpazilla.id);
            editedUser.save();
        }
        else {
            user.save();
            create();
        }

        flash.success("Record saved successfully.");
        list("0");
    }

我必须更改ID因为，我想更新表的信息。假设，这是当前的条件：

然后，我想像这样更新Upazilla：

然后显示错误。

问题在哪里？

Answer 1

我通过改变我的控制器解决了这个问题：

 @ExternalRestrictions("Edit User")
   public static void submit(@Valid models.User user) {


        Logger.info("flashUserId in Submit: " + flash.get("user") + " and user id is : " + user.id);
        validation.valid(user);
        if(validation.hasErrors() && flash.get("user") == null) {
            List<Role> roles = Role.findAll();
            Logger.info("hasError");

            render("@edit", user, roles);
        }

        Logger.info ("id: "+ user.geoUpazilla.id);   
        if(flash.get("user") != null){

            User editedUser = User.findById(Long.parseLong(flash.get("user")));

            editedUser.name = user.name;
            editedUser.displayName = user.displayName;
            editedUser.email = user.email;
            editedUser.role = user.role;
            editedUser.school= user.school;
            editedUser.ngo = user.ngo;
            editedUser.geoDivision = user.geoDivision;
            editedUser.geoDistrict = user.geoDistrict;
            editedUser.geoUpazilla = user.geoUpazilla;

            Logger.info("id : " + editedUser.id + " name: " + editedUser.name + " displayname: " + editedUser.displayName + " email: " + editedUser.email + " role: " + editedUser.role.id + " ngoId: " + editedUser.ngo.id + " geoDivisionId: " 
            + editedUser.geoDivision.id + " geoDistrictId: "+ editedUser.geoDistrict.id + " geoUpazilaId: "+ editedUser.geoUpazilla.id);

            editedUser.save();


        }
        else {
            user.save();
            create();
        }

        flash.success("Record saved successfully.");
        list("0");
    }

Play-为什么发生PersistenceException？

1 个答案: