我试图将数据导入到从实体创建的表中。 这是产生的错误。
我的架构
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))
我的其余日志：
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.springframework.context.annotation.AnnotationConfigApplicationContext@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);
}
}
这是我正在运行的import.sql。
INSERT INTO projects VALUES (1, 200, CURRENT_TIMESTAMP , 'some description', 'pathtoimage', 'ProjectTransformers', 500, 1, 1)
INSERT INTO users VALUES (1, 1000, 'something@gmail.com', 'Jenna Smith', '1234')
INSERT INTO pledges VALUES (1, 200, CURRENT_TIMESTAMP , 1, 1)
我认为import.sql有问题，但我不知道是什么。我错过了什么吗？有什么不对吗？
答案 0 :(得分：0)
在import.sql中，首先插入父表，而不是相关的子项：
INSERT INTO users VALUES (1, 1000, 'something@gmail.com', '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);