Java 春季休眠错误

我的spring.xml中有以下代码可以正常工作

<beans:bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <beans:property name="annotatedClasses">
            <beans:list>
                <beans:value>org.assessme.com.entity.User</beans:value>
            </beans:list>
        </beans:property>
        <beans:property name="dataSource" ref="dataSource" />
                <beans:property name="packagesToScan"
        value="org.assessme.com.entity.*" />
        <beans:property name="hibernateProperties">
            <beans:props>
                <beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
                </beans:prop>
                <beans:prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory
                </beans:prop>
                <beans:prop key="hibernate.show_sql">true</beans:prop>
                <beans:prop key="hibernate.hbm2ddl.auto">update</beans:prop>
            </beans:props>
        </beans:property>
    </beans:bean>

如果需要，请在下面输入实体代码

Campaign.java

package org.assessme.com.entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;

@Entity
@Table(name = "campaigns")
public class Campaign {

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

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

    public String getName() {
        return name;
    }

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

    public String getId() {
        return id;
    }

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

User.java

package org.assessme.com.entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

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

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

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

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

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

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

    @Column(name = "access")
    private Integer access;

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name = "id")
    private long 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 String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public long getId() {
        return id;
    }
    public void setId(long id) {
        this.id = id;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public Integer getAccess() {
        return access;
    }
    public void setAccess(Integer access) {
        this.access = access;
    }
}

---

我认为问题在于

活动

没有用

@Id

注释的属性。像这样修复它：

@Id
@Column(name = "id")
private String id;

---

用户\活动bean的导入语句是什么？

活动

类没有带有

@Id

注释的字段。您看到的错误是，您需要告诉Hibernate该表的主键是什么。带注释的bean列表中是否缺少Campagin类？

@Id
@Column(name = "id")
private String id;