本文介绍了“调用getter of”发生IllegalArgumentException异常。同时运行SINGLE_TABLE继承策略的条件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

在尝试使用hibernate Criteria从数据库中列出对象时出现此错误,该标准使用简单的限制进行了修饰

  Criteria criteria = session。个createCriteria(Licence.class); 
criteria.add(Restrictions.eq(gym,gym.getId()));
列表< License> list = criteria.list();

我有两个类: License 健身房的关联。这两个类扩展了 DataModel ,它用于管理关于数据编辑的信息(创建和判断,谁和何时)。同样重要的是这两个类有 @Inheritance(strategy = InheritanceType.SINGLE_TABLE)



p>

  @Entity 
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
public class License extends DataModel implements Serializable {

私人健身房;
私人字符串licenceType;
private String keyCode;
私人日期expireDate;
私人ELICenceExpiry过期;

public Public(){
}

@ManyToOne
@JoinColumn(name =gym_id)
public Gym getGym() {
return gym;
}

public void setGym(Gym gym){
this.gym = gym;


@Column(name =licence_type)
public String getLicenceType(){
return licenceType;
}

public void setLicenceType(String licenceType){
this.licenceType = licenceType;

$ b $ @Column(name =key_code)
public String getKeyCode(){
return keyCode;
}

public void setKeyCode(String keyCode){
this.keyCode = keyCode;

$ b $ @Column(name =expire_date)
public Date getExpireDate(){
return expireDate;
}

public void setExpireDate(Date expireDate){
this.expireDate = expireDate;

$ b $ @ @Column(name =expired)
@Enumerated(EnumType.ORDINAL)
public ELicenceExpiry getExpired(){
return expired;
}
public void setExpired(ELicenceExpiry expired){
this.expired = expired;


$ / code $ / pre
$ b $健身房

  @Entity 
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
public class Gym扩展DataModel实现Serializable {

private字符串shortName;
私人字符串名称;
private String nip;
私人字符串街道;
private String postCode;
私有字符串本地化;
私人弦乐电话;

public Gym(){};

@Column(name =short_name)
public String getShortName(){
return shortName;
}
public void setShortName(String shortName){
this.shortName = shortName;
}
public String getName(){
return name;
}
public void setName(String name){
this.name = name;
}
public String getNip(){
return nip;
}
public void setNip(String nip){
this.nip = nip;
}
public String getStreet(){
return street;
}
public void setStreet(String street){
this.street = street;
}
@Column(name =post_code)
public String getPostCode(){
return postCode;
}
public void setPostCode(String postCode){
this.postCode = postCode;
}
public String getLocalization(){
return localization;
}
public void setLocalization(String localization){
this.localization = localization;
}
public String getTelephone(){
return telephone;
}
public void setTelephone(String telephone){
this.telephone = telephone;


code

$ b $ DataModel

  @MappedSuperclass 
public abstract class DataModel implements Serializable {
protected Long id;
保护字符串编辑器;
保护日期editDate;
保护时间editTime;
保护int dataState;

@Id
@GeneratedValue
public Long getId(){
return id;
}
public void setId(Long id){
this.id = id;
}
public String getEditor(){
return editor;
}
public void setEditor(String editor){
this.editor = editor;
}
@Column(name =edit_date)
public Date getEditDate(){
return editDate;
}
public void setEditDate(Date editDate){
this.editDate = editDate;
}
@Column(name =edit_time)
public Time getEditTime(){
return editTime;
}
public void setEditTime(Time editTime){
this.editTime = editTime;
}
@Column(name =data_state)
public int getDataState(){
return dataState;
}
public void setDataState(int dataState){
this.dataState = dataState;


$ / code $ / pre
$ b $ MySQL $ /

  CREATE TABLE许可证(
id INT(5)NOT NULL AUTO_INCREMENT,
gym_id int(3),
licence_type VARCHAR(10) ,
key_code VARCHAR(10),
expire_date DATE,
expired INT(1),
editor VARCHAR(10),
edit_date DATE,
edit_time TIME,
data_state INT(1)NOT NULL,
PRIMARY KEY(id),
FOREIGN KEY(gym_id)参考资料gym(id)ON DELETE SET NULL
);

CREATE TABLE体系(
id INT(3)NOT NULL AUTO_INCREMENT
short_name VARCHAR(16)NOT NULL UNIQUE $ b $ name VARCHAR(100)NOT NULL,
street VARCHAR(100),
post_code VARCHAR(6),
localization VARCHAR(64),
nip VARCHAR(13),
telephone VARCHAR(15),
编辑器VARCHAR(10),
edit_date DATE,
edit_time TIME,
data_state INT(1)NOT NULL,
PRIMARY KEY(id)
) ;

例外:

  org.hibernate.PropertyAccessException:发生IllegalArgumentException调用get.pl.fitpartner.model.DataModel.id $ b $ org.hibernate.property.BasicPropertyAccessor $ BasicGetter.get(BasicPropertyAccessor.java:192)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
at org .hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
(...)
引起:java.lang.IllegalArgumentException:java.lang.ClassCastException@37bd68c3
sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java: 483)
在org.hibernate.pr operty.BasicPropertyAccessor $ BasicGetter.get(BasicPropertyAccessor.java:169)
... 28 more

我做错了什么?

解决方案

尝试使用

  criteria.add(Restrictions.eq(gym,gym)); 

即您将 gym 作为 criteria.add 而不是的第二个参数。gym.getId()


I have this error while trying to list objects from database with hibernate Criteria decorated with simple Restrictions

Criteria criteria = session.createCriteria(Licence.class);
criteria.add(Restrictions.eq("gym", gym.getId()));
List<Licence> list = criteria.list();

I have two classes: Licence which has an association to Gym. Those two classes are extending DataModel which is for managing information about data edition - (creation and etition, who and when). What is also important that those two classes have @Inheritance(strategy = InheritanceType.SINGLE_TABLE).

Licence

@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
public class Licence extends DataModel implements Serializable {

    private Gym gym;
    private String licenceType;
    private String keyCode;
    private Date expireDate;
    private ELicenceExpiry expired;

    public Licence() {
    }

    @ManyToOne
    @JoinColumn(name="gym_id")
    public Gym getGym() {
        return gym;
    }

    public void setGym(Gym gym) {
        this.gym = gym;
    }

    @Column(name = "licence_type")
    public String getLicenceType() {
        return licenceType;
    }

    public void setLicenceType(String licenceType) {
        this.licenceType = licenceType;
    }

    @Column(name = "key_code")
    public String getKeyCode() {
        return keyCode;
    }

    public void setKeyCode(String keyCode) {
        this.keyCode = keyCode;
    }

    @Column(name = "expire_date")
    public Date getExpireDate() {
        return expireDate;
    }

    public void setExpireDate(Date expireDate) {
        this.expireDate = expireDate;
    }

    @Column(name = "expired")
    @Enumerated(EnumType.ORDINAL)
    public ELicenceExpiry getExpired() {
        return expired;
    }
    public void setExpired(ELicenceExpiry expired) {
        this.expired = expired;
    }
}

Gym

@Entity
@Inheritance(strategy= InheritanceType.SINGLE_TABLE)
public class Gym extends DataModel implements Serializable{

    private String shortName;
    private String name;
    private String nip; 
    private String street;
    private String postCode;
    private String localization;
    private String telephone;

    public Gym(){};

    @Column(name="short_name")
    public String getShortName() {
        return shortName;
    }
    public void setShortName(String shortName) {
        this.shortName = shortName;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getNip() {
        return nip;
    }
    public void setNip(String nip) {
        this.nip = nip;
    }
    public String getStreet() {
        return street;
    }
    public void setStreet(String street) {
        this.street = street;
    }
    @Column(name="post_code")
    public String getPostCode() {
        return postCode;
    }
    public void setPostCode(String postCode) {
        this.postCode = postCode;
    }
    public String getLocalization() {
        return localization;
    }
    public void setLocalization(String localization) {
        this.localization = localization;
    }
    public String getTelephone() {
        return telephone;
    }
    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }
}

DataModel

@MappedSuperclass
public abstract class DataModel implements Serializable{
    protected Long id;
    protected String editor;
    protected Date editDate;
    protected Time editTime;
    protected int dataState;

    @Id
    @GeneratedValue
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getEditor() {
        return editor;
    }
    public void setEditor(String editor) {
        this.editor = editor;
    }
    @Column(name="edit_date")
    public Date getEditDate() {
        return editDate;
    }
    public void setEditDate(Date editDate) {
         this.editDate = editDate;
    }
    @Column(name="edit_time")
    public Time getEditTime() {
        return editTime;
    }
    public void setEditTime(Time editTime) {
        this.editTime = editTime;
    }
    @Column(name="data_state")
    public int getDataState() {
         return dataState;
    }
    public void setDataState(int dataState) {
        this.dataState = dataState;
    }
 }

MySQL

CREATE TABLE licence(
    id INT(5) NOT NULL AUTO_INCREMENT,
    gym_id int(3),
    licence_type VARCHAR(10),
    key_code VARCHAR(10),
    expire_date DATE,
    expired INT(1),
    editor VARCHAR(10),
    edit_date DATE,
    edit_time TIME,
    data_state INT(1) NOT NULL,
    PRIMARY KEY (id),
    FOREIGN KEY (gym_id) REFERENCES gym(id) ON DELETE SET NULL
);

CREATE TABLE gym(
    id INT(3) NOT NULL AUTO_INCREMENT,
    short_name VARCHAR(16) NOT NULL UNIQUE,
    name VARCHAR(100) NOT NULL,
    street VARCHAR(100),
    post_code VARCHAR(6),
    localization VARCHAR(64),
    nip VARCHAR(13),
    telephone VARCHAR(15),
    editor VARCHAR(10),
    edit_date DATE,
    edit_time TIME,
    data_state INT(1) NOT NULL,
    PRIMARY KEY (id)
);

Exception:

org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of pl.fitpartner.model.DataModel.id
    at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:192)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
    at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
    at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
(...)
Caused by: java.lang.IllegalArgumentException: java.lang.ClassCastException@37bd68c3
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:169)
    ... 28 more

What I am doing wrong?

解决方案

Try to use

criteria.add(Restrictions.eq("gym", gym));

i.e. you put gym as second argument of criteria.add instead of gym.getId().

这篇关于“调用getter of”发生IllegalArgumentException异常。同时运行SINGLE_TABLE继承策略的条件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

10-18 22:08