使用Spring，休眠，JPA將數據插入表中

我試圖將數據導入到從實體創建的表中。這是正在生成的錯誤。使用Spring，休眠，JPA將數據插入表中

我的架構：

Hibernate: create table pledges (id integer not null auto_increment, amount double precision, date datetime, project_id integer, user_id integer, primary key (id)) 
Hibernate: create table projects (id integer not null auto_increment, pledge_amount double precision, date datetime, description_project longtext, image varchar(255), project_name varchar(255), required_money double precision, status integer, user_id integer, primary key (id)) 
Hibernate: create table users (id integer not null auto_increment, credit double precision, email varchar(80), full_name varchar(45), password varchar(255), primary key (id))

休息我的日誌：

Hibernate: alter table pledges add constraint UKhy4wjumf9bhip4v5hamiakkpn unique (user_id, project_id) 
Hibernate: alter table users add constraint UK_6dotkott2kjsp8vw4d0m25fb7 unique (email) 
Hibernate: alter table pledges add constraint FKrhpj4pdxfa62tffq87i06jkiv foreign key (project_id) references projects (id) 
Hibernate: alter table pledges add constraint FKmsyjxxpylu6epd5wmsdi9i9u8 foreign key (user_id) references users (id) 
Hibernate: alter table projects add constraint FKhswfwa3ga88vxv1pmboss6jhm foreign key (user_id) references users (id) 
2016-11-19 21:15:31.966 INFO 12876 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000476: Executing import script '/import.sql' 
2016-11-19 21:15:31.971 ERROR 12876 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000388: Unsuccessful: INSERT INTO projects VALUES (1, 200, CURRENT_TIMESTAMP , 'some description', 'pathtoimage', 'ProjectTransformers', 500, 1, 1) 
2016-11-19 21:15:31.971 ERROR 12876 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : Referential integrity constraint violation: "FKHSWFWA3GA88VXV1PMBOSS6JHM: PUBLIC.PROJECTS FOREIGN KEY(USER_ID) REFERENCES PUBLIC.USERS(ID) (1)"; SQL statement: 
INSERT INTO projects VALUES (1, 200, CURRENT_TIMESTAMP , 'some description', 'pathtoimage', 'ProjectTransformers', 500, 1, 1) [23506-193] 
2016-11-19 21:15:31.972 ERROR 12876 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000388: Unsuccessful: INSERT INTO pledges VALUES (1, 200, CURRENT_TIMESTAMP , 1, 1) 
2016-11-19 21:15:31.974 ERROR 12876 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : Referential integrity constraint violation: "FKRHPJ4PDXFA62TFFQ87I06JKIV: PUBLIC.PLEDGES FOREIGN KEY(PROJECT_ID) REFERENCES PUBLIC.PROJECTS(ID) (1)"; SQL statement: 
INSERT INTO pledges VALUES (1, 200, CURRENT_TIMESTAMP , 1, 1) [23506-193] 
2016-11-19 21:15:31.974 INFO 12876 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete 
2016-11-19 21:15:32.024 INFO 12876 --- [   main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 
2016-11-19 21:15:32.634 WARN 12876 --- [   main] .t.AbstractTemplateResolverConfiguration : Cannot find template location: classpath:/templates/ (please add some templates or check your Thymeleaf configuration) 
2016-11-19 21:15:32.765 INFO 12876 --- [   main] o.s.j.e.a.AnnotationMBeanExporter  : Registering beans for JMX exposure on startup 
2016-11-19 21:15:32.778 INFO 12876 --- [   main] i.c.c.application.CrowdfundApplication : Started CrowdfundApplication in 3.817 seconds (JVM running for 4.188) 
2016-11-19 21:15:32.779 INFO 12876 --- [  Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.spring[email protected]181ce95: startup date [Sat Nov 19 21:15:29 GMT 2016]; root of context hierarchy 
2016-11-19 21:15:32.780 INFO 12876 --- [  Thread-2] o.s.j.e.a.AnnotationMBeanExporter  : Unregistering JMX-exposed beans on shutdown 
2016-11-19 21:15:32.780 INFO 12876 --- [  Thread-2] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'

User.java

package ie.cit.crowdfund.application.entity; 

import javax.persistence.*; 
import java.util.DoubleSummaryStatistics; 
import java.util.List; 

@Entity(name = "users") 
public class User { 

    @Id 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private int id; 

    @Column(length = 45) 
    private String fullName; 

    @Column(length = 80, unique = true) 
    private String email; 

    @Column 
    private String password; 

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "user") 
    private List<Project> projects; 

    @OneToMany(fetch = FetchType.EAGER, mappedBy = "user") 
    private List<Pledge> pledges; 

    @Column 
    private Double credit; 

    public User() { 
    } 

    public User(String fullName, String email, String password) { 
     this.fullName = fullName; 
     this.email = email; 
     this.password = password; 
    } 

    public int getId() { 
     return id; 
    } 

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

    public String getFullName() { 
     return fullName; 
    } 

    public void setFullName(String firstName) { 
     this.fullName = firstName; 
    } 

    public String getEmail() { 
     return email; 
    } 

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

    public List<Project> getProjects() { 
     return projects; 
    } 

    public void setProjects(List<Project> projects) { 
     this.projects = projects; 
    } 

    public List<Pledge> getPledges() { 
     return pledges; 
    } 

    public void setPledges(List<Pledge> Pledges) { 
     this.pledges = Pledges; 
    } 

    public String getPassword() { 
     return password; 
    } 

    public void setPassword(String password) { 
     this.password = password; 
    } 

    public Double getCredit() { 
     return credit; 
    } 

    public void setCredit(Double credit) { 
     this.credit = credit; 
    } 

}

Project.java

package ie.cit.crowdfund.application.entity; 

import ie.cit.crowdfund.application.utils.NewFormat; 
import org.hibernate.annotations.Type; 

import javax.persistence.*; 
import java.sql.Timestamp; 
import java.util.ArrayList; 
import java.util.List; 

@Entity(name = "projects") 
public class Project { 


    @Id 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    private int id; 

    @Column 
    private double requiredMoney; 

    @Column 
    @Type(type = "text") 
    private String descriptionProject; 

    @Column 
    private String image; 

    @Column 
    private double Pledge_amount; 

    @Column 
    private Timestamp date; 

    @Enumerated 
    private Status status; 

    @Column(name = "project_name") 
    private String name; 


    @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL, mappedBy = "project") 
    private List<Pledge> PledgeList = new ArrayList<>(); 

    @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL) 
    @JoinColumn(name = "user_id") 
    private User user; 


    public Project() { 
    } 

    public Project(User user, double requiredMoney, String descriptionProject, String image, double Pledge_amount, Timestamp date, Status status, String name, List<Pledge> PledgeList) { 
     this.user = user; 
     this.requiredMoney = requiredMoney; 
     this.descriptionProject = descriptionProject; 
     this.image = image; 
     this.Pledge_amount = Pledge_amount; 
     this.date = date; 
     this.status = status; 
     this.name = name; 
     this.PledgeList = PledgeList; 
    } 

    public int getId() { 
     return id; 
    } 

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

    public User getUserId() { 
     return user; 
    } 

    public void setUserId(int userId) { 
     this.user = user; 
    } 

    public double getrequiredMoney() { 
     return requiredMoney; 
    } 

    public void setrequiredMoney(double requiredMoney) { 
     this.requiredMoney = requiredMoney; 
    } 

    public String getdescriptionProject() { 
     return descriptionProject; 
    } 

    public void setdescriptionProject(String descriptionProject) { 
     this.descriptionProject = descriptionProject; 
    } 

    public String getImage() { 
     return image; 
    } 

    public void setImage(String image) { 
     this.image = image; 
    } 

    public double getPledge_amount() { 
     return PledgeList.stream().mapToDouble(Pledge::getAmount).sum(); 
    } 

    public void setPledge_amount(double Pledge_amount) { 
     this.Pledge_amount = Pledge_amount; 
    } 

    public Timestamp getDate() { 
     return date; 
    } 

    public void setDate(Timestamp date) { 
     this.date = date; 
    } 

    public Status getStatus() { 
     return status; 
    } 

    public void setStatus(Status status) { 
     this.status = status; 
    } 

    public User getUser() { 
     return user; 
    } 

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

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public List<Pledge> getPledgeList() { 
     return PledgeList; 
    } 

    public void setPledgeList(List<Pledge> PledgeList) { 
     this.PledgeList = PledgeList; 
    } 

    public double percentPledge() { 
     double percent = getPledge_amount()/requiredMoney * 100; 
     return NewFormat.roundNumber(percent); 
    } 

    public boolean finishedProject() { 
//  if (percentPledge() >= FINISHED) 
//  { 
//   return true; 
//  } 
//  else { 
//   return false; 
//  } 
     return true; 
    } 

    public String dateFormat() { 
     return "" + date.getDate() + "-" + (date.getMonth() + 1) + "-" + (date.getYear() + 1900); 
    } 
    @Override 
    public String toString() { 
     return "Project{" + 
       "id=" + id + 
       ", user=" + user + 
       ", requiredMoney=" + requiredMoney + 
       ", descriptionProject='" + descriptionProject + '\'' + 
       ", image='" + image + '\'' + 
       ", Pledge_amount=" + Pledge_amount + 
       ", date=" + date + 
       ", status='" + status + '\'' + 
       ", name='" + name + '\'' + 
       ", PledgeList=" + PledgeList + 
       '}'; 
    } 
}

Pledge.java

package ie.cit.crowdfund.application.entity; 

import javax.persistence.*; 
import java.sql.Timestamp; 

@Entity(name = "pledges") 
@Table(name = "pledges", uniqueConstraints = @UniqueConstraint(columnNames = {"user_id", "project_id"})) 
public class Pledge { 

@Id 
@GeneratedValue(strategy = GenerationType.IDENTITY) 
private int id; 

@ManyToOne 
@JoinColumn(name = "user_id") 
private User user; 

@Column 
private double amount; 

@ManyToOne 
@JoinColumn(name = "project_id") 
private Project project; 

@Column 
private Timestamp date; 


public Pledge() { 
} 

public Pledge(User user, double amount, Project project, boolean approved, Timestamp date) { 
    this.user = user; 
    this.amount = amount; 
    this.project = project; 
    this.date = date; 
} 

public Project getProject() { 
    return project; 
} 

public void setProject(Project project) { 
    this.project = project; 
} 

public int getId() { 
    return id; 
} 

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

public User getUser() { 
    return user; 
} 

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

public double getAmount() { 
    return amount; 
} 

public void setAmount(double amount) { 
    this.amount = amount; 
} 

public Project getProjectId() { 
    return project; 
} 

public void setProjectId(Project project) { 
    this.project = project; 
} 

public Timestamp getDate() { 
    return date; 
} 

public void setDate(Timestamp date) { 
    this.date = date; 
} 

public String setDateFormat() { 
    return "" + date.getDate() + "-" + (date.getMonth() + 1) + "-" + (date.getYear() + 1900); 
}

}

這是我運行import.sql。

INSERT INTO projects VALUES (1, 200, CURRENT_TIMESTAMP , 'some description', 'pathtoimage', 'ProjectTransformers', 500, 1, 1) 
INSERT INTO users VALUES (1, 1000, '[email protected]', 'Jenna Smith', '1234') 
INSERT INTO pledges VALUES (1, 200, CURRENT_TIMESTAMP , 1, 1)

我認爲import.sql有問題，但我不知道是什麼。我錯過了什麼嗎？有什麼問題嗎？

來源

2016-11-19 Pavel Vasilev

您可以發佈它創建數據庫表的腳本？ –

這些表在錯誤的前3行中描述。它是通過休眠自動生成的。 –

您是否使用hibernate ddl來自動創建表格？ –

在你import.sql，插入第一個父表，比相關兒童：

INSERT INTO users VALUES (1, 1000, '[email protected]', 'Jenna Smith', '1234'); 
INSERT INTO projects VALUES (1, 200, CURRENT_TIMESTAMP , 'some description', 'pathtoimage', 'ProjectTransformers', 500, 1, 1); 
INSERT INTO pledges VALUES (1, 200, CURRENT_TIMESTAMP , 1, 1);

來源

2016-11-19 22:41:29

天啊，我知道這很簡單。甚至沒有注意到。謝謝你解決了這個問題。 –

爲了做到這一點，確保'hibernate.hbm2ddl.auto'設置爲'create'或'create-drop'，如果它設置爲'update' import.sql將不起作用 – Vishrant

使用Spring，休眠，JPA將數據插入表中

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