Spring boot JPA实体不工作
Spring boot JPA实体不工作,spring-boot,recursion,spring-data-jpa,entity,Spring Boot,Recursion,Spring Data Jpa,Entity,Person实体的我的Spring Boot实体不工作。我与爱好实体有一种多对多的关系,并且该类正在工作 不必在JpaRepository中定义的预定义函数可以工作,但任何其他函数都不能工作 类人 import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import java
Person
实体的我的Spring Boot实体不工作。我与爱好
实体有一种多对多的关系,并且该类正在工作
不必在JpaRepository
中定义的预定义函数可以工作,但任何其他函数都不能工作
类<代码>人
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.Table;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
@Entity
@Table(name = "Person")
public class Person implements Serializable {
private static final long serialVersionUID = 4582624077512606651L;
@ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST, CascadeType.MERGE})
@JoinTable(name = "person_hobby", joinColumns = {@JoinColumn(name = "person_id")}, inverseJoinColumns = {@JoinColumn(name = "hobby_id")})
private Set<Hobby> hobby = new HashSet<>();
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
@Column(name = "firstName")
private String firstName;
@Column(name = "lastName")
private String lastName;
protected Person() {
}
public Person(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
@Override
public String toString() {
return String.format("Person[id=%d, firstName='%s', lastName='%s']", id, firstName, lastName);
}
public Set<Hobby> getHobby() {
return hobby;
}
public void setHobby(Set<Hobby> hobby) {
this.hobby = hobby;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
}
类HobbyRepository
具有工作方法
import ...Hobby;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import java.util.List;
import java.util.Set;
public interface HobbyRepository extends JpaRepository<Hobby, Long> {
public List<Hobby> findByPersons_Id(Long id);
public List<Hobby> findByPersons_IdIn(Set<Long> ids);
@Query("select h from Hobby h")
List<Hobby> findByHobbyHobbyId();
}
这是一个有效的呼叫。与personService.findByHobby相同的调用不起作用
String result = "";
Set <Long>ids=new HashSet<Long>();
ids.add(new Long(87));
ids.add(new Long(90));
for(Hobby cust : hobbyService.findByPerson_IdIn(ids)){
result += cust.toString();
}
return result;
conseleoutputpersonService.findByLastName(字符串名)
上的第二行不起作用
Hibernate: select person0_.id as id1_1_, person0_.first_name as
first_na2_1_, person0_.last_name as last_nam3_1_ from person person0_ where person0_.last_name=?
餐桌嗜好
id(PK) title
'88', 'Fotboll',
'89', 'Film',
'91', 'Frimärken',
'92', 'Golf',
餐桌上的人
id(PK) first_name last_name
'87', 'Adam', 'Johnson'
'90', 'Anna', 'Persson'
'93', 'Nils', 'Svensson'
爱好餐桌的人
person_id(pk) hobby_id(pk)
'87', '88'
'87', '89'
'90', '89'
'90', '91'
'90', '92'
'93', '92'
看看你的班级
PersonServiceImpl
第44行。您将在其中找到对包含以下行的相同方法的调用:findByHobby\u Id
。可能通过该类实现的接口
修改线路以调用您实际想要调用的内容(我猜是您的存储库?)我认为您应该清楚地添加更多信息。好的。你认为需要什么样的信息。更新了一些新的信息。到底什么不起作用?有例外吗?当控制台输出不工作时,它看起来像一个带有相同错误的循环。就像一个递归循环。我看不到完整的消息,因为整个控制台都充满了errorloop。我不认为问题就在这里,这只是给代表打个电话而已。它与hobbyserviceimpl相同。我在晚上查看了ir你是对的,我一次又一次地搜索接口,没有注意到明显的是我使用了相同的methodname并让它自己调用。谢谢你的帮助!
id(PK) title
'88', 'Fotboll',
'89', 'Film',
'91', 'Frimärken',
'92', 'Golf',
id(PK) first_name last_name
'87', 'Adam', 'Johnson'
'90', 'Anna', 'Persson'
'93', 'Nils', 'Svensson'
person_id(pk) hobby_id(pk)
'87', '88'
'87', '89'
'90', '89'
'90', '91'
'90', '92'
'93', '92'