暑假项目总结（三）

注解中一些问题

一、实体类注解，加入@Entity等，注意@Column中name和数据库中一致，如下图：

package cn.edu.cqu.cqzy.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="music_user",catalog="music")
public class User implements java.io.Serializable{
    
    private static final long serialVersionUID = 12222222222L;
    
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="userId")
    private int userId;
    @Column(name="username")
    private String username;
    @Column(name="pwd")
    private String pwd;
    @Column(name="email")
    private String email;
    @Column(name="score")
    private int score = 0;  
    @Column(name="authority")
    private int authority = 1;  
    
    各种get(),set().....
    
}

2.服务层 + @Service, 数据访问层 + @Repository、@Transactional, 逻辑控制层 + @Controller (数据层和控制层中的接口，无需要注解), 各层中使用的其它资源用@Resource.

*3.数据实现类若继承HibernateDaoSupport, 需要实现setSessionFactory0(),并加上注解@Autowired

public class AdminDaoImpl extends HibernateDaoSupport implements AdminDao{
 
    @Autowired
    public void setSessionFactory0(SessionFactory sessionFactory) {
        super.setSessionFactory(sessionFactory);
    }