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我在下面的问题上挂了很长时间。我有一个一对多的关系，我正在根据模型使用 Hibernate 生成数据库。它给出了以下错误。但似乎我做得对，没有错。我正在使用 AppFuse 生成的应用程序。

Field 'task_id' doesn't have a default value
org.hibernate.exception.GenericJDBCException: could not execute statement

这是我的两个模型。

用户：

@Entity
@Table(name = "app_user")
@Indexed
@XmlRootElement
public class User extends BaseObject implements Serializable, UserDetails {
    private static final long serialVersionUID = 3832626162173359411L;

    private Long id;
    private String username; // required
    private String password; // required
    private String confirmPassword;
    private String passwordHint;
    private String firstName; // required
    private String lastName; // required
    private String email; // required; unique
    private String phoneNumber;
    private String website;
    private Address address = new Address();
    private Integer version;
    private Set<Role> roles = new HashSet<Role>();
    private Set<Task> tasks = new HashSet<Task>();
    private boolean enabled;
    private boolean accountExpired;
    private boolean accountLocked;
    private boolean credentialsExpired;

    /**
     * Default constructor - creates a new instance with no values set.
     */
    public User() {
    }

    /**
     * Create a new instance and set the username.
     *
     * @param username
     *            login name for user.
     */
    public User(final String username) {
        this.username = username;
    }

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @DocumentId
    public Long getId() {
        return id;
    }

    @Column(nullable = false, length = 50, unique = true)
    @Field
    public String getUsername() {
        return username;
    }

    @Column(nullable = false)
    @XmlTransient
    @JsonIgnore
    public String getPassword() {
        return password;
    }

    @Transient
    @XmlTransient
    @JsonIgnore
    public String getConfirmPassword() {
        return confirmPassword;
    }

    @Column(name = "password_hint")
    @XmlTransient
    public String getPasswordHint() {
        return passwordHint;
    }

    @Column(name = "first_name", nullable = false, length = 50)
    @Field
    public String getFirstName() {
        return firstName;
    }

    @Column(name = "last_name", nullable = false, length = 50)
    @Field
    public String getLastName() {
        return lastName;
    }

    @Column(nullable = false, unique = true)
    @Field
    public String getEmail() {
        return email;
    }

    @Column(name = "phone_number")
    @Field(analyze = Analyze.NO)
    public String getPhoneNumber() {
        return phoneNumber;
    }

    @Field
    public String getWebsite() {
        return website;
    }

    /**
     * Returns the full name.
     *
     * @return firstName + ' ' + lastName
     */
    @Transient
    public String getFullName() {
        return firstName + ' ' + lastName;
    }

任务：

@Entity
@Table(name = "task")
@XmlRootElement
public class Task extends BaseObject {

    private static final long serialVersionUID = 2240962937778432578L;

    private Long id;
    private Long userId;
    private User user;
    private CSVFile csvFile;
    private String status;
    private Date addedDate;
    private Date completedDate;
    private Set<Part> parts = new HashSet<Part>();

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "task_id")
    public Long getId() {
        return id;
    }

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

    @Column(name = "user_id")
    public Long getUserId() {
        return userId;
    }

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

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "user_id", referencedColumnName = "id", nullable = false, insertable = false, updatable = false)
    public User getUser() {
        return user;
    }

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

    @OneToOne(fetch = FetchType.LAZY, mappedBy = "task", cascade = CascadeType.ALL)
    public CSVFile getCsvFile() {
        return csvFile;
    }

    public void setCsvFile(CSVFile csvFile) {
        this.csvFile = csvFile;
    }

    public String getStatus() {
        return status;
    }

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

    public Date getAddedDate() {
        return addedDate;
    }

    public void setAddedDate(Date addedDate) {
        this.addedDate = addedDate;
    }

    public Date getCompletedDate() {
        return completedDate;
    }

    public void setCompletedDate(Date completedDate) {
        this.completedDate = completedDate;
    }

    @OneToMany(fetch = FetchType.EAGER, mappedBy = "task", cascade = CascadeType.ALL)
    public Set<Part> getParts() {
        return parts;
    }

    public void setParts(Set<Part> parts) {
        this.parts = parts;
    }

这是我的服务。

    @Service("taskService")
public class TaskServiceImpli extends GenericManagerImpl<Task, Long> implements
        TaskService {

    private UserDao userDao;
    private CSVExtractor csvExtractor;
    private TaskDao taskDao;

    @Autowired
    public TaskServiceImpli(TaskDao taskDao) {
        super(taskDao);
        this.taskDao = taskDao;
    }

    public CSVExtractor getCsvExtractor() {
        return csvExtractor;
    }

    @Autowired
    public void setCsvExtractor(CSVExtractor csvExtractor) {
        this.csvExtractor = csvExtractor;
    }

    @Autowired
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public List<Task> getAllTasksPerUser(String userId) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public Task saveTask(Task task) {
        return taskDao.saveTask(task);
    }

我没有添加上面的完整代码，以下是我的表创建模式。

       CREATE TABLE `task` (
      `task_id` bigint(20) NOT NULL AUTO_INCREMENT,
      `addedDate` datetime DEFAULT NULL,
      `completedDate` datetime DEFAULT NULL,
      `status` varchar(255) DEFAULT NULL,
      `user_id` bigint(20) DEFAULT NULL,
      PRIMARY KEY (`task_id`),
      KEY `FK3635851EFD5399` (`user_id`),
      CONSTRAINT `FK3635851EFD5399` FOREIGN KEY (`user_id`) REFERENCES `app_user` (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
    SELECT * FROM bisco_tool.task;

    CREATE TABLE `app_user` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `account_expired` bit(1) NOT NULL,
  `account_locked` bit(1) NOT NULL,
  `address` varchar(150) DEFAULT NULL,
  `city` varchar(50) DEFAULT NULL,
  `country` varchar(100) DEFAULT NULL,
  `postal_code` varchar(15) DEFAULT NULL,
  `province` varchar(100) DEFAULT NULL,
  `credentials_expired` bit(1) NOT NULL,
  `email` varchar(255) NOT NULL,
  `account_enabled` bit(1) DEFAULT NULL,
  `first_name` varchar(50) NOT NULL,
  `last_name` varchar(50) NOT NULL,
  `password` varchar(255) NOT NULL,
  `password_hint` varchar(255) DEFAULT NULL,
  `phone_number` varchar(255) DEFAULT NULL,
  `username` varchar(50) NOT NULL,
  `version` int(11) DEFAULT NULL,
  `website` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `email` (`email`),
  UNIQUE KEY `username` (`username`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

这个特定问题的所有答案都与 AUTO_INCREMENT 有关，但我拥有这一切，但它仍然无法正常工作。任何帮助，将不胜感激。

谢谢

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1 回答 1

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这不是问题的确切答案，而是这个更普遍的问题。因此，我将提供一种通用方法，使事情更容易修复与我的问题相关的您自己的错误。首先，Spring 的基本思想是强制执行最佳实践并使应用程序更加灵活。AppFuse 是一种通过用户管理快速跟踪 Web 应用程序的方法。

我从一开始就是这样做的，但问题是，我没有在调试控制台上获得更多信息，所以我可以更好地了解这个案例。

我没有评论

<logger name="org.hibernate">
    <level value="WARN"/>
</logger>

<logger name="org.hibernate.SQL">
    <level value="DEBUG"/>
</logger>

您将更好地了解问题出在哪里。:)，调试愉快。

于 2015-02-19T18:44:07.533 回答