Basedao抽取

1,basedao

public interface BaseDao<T> {
	public void save(T entity);// 儲存

	public void delete(T entity);// 删除使用者

	public void update(T entity);// 更新使用者

	public T findById(Serializable id);// 根據主鍵查找使用者

	public List<T> getAll();// 檢視所有

}

           

2,baseDaoImpl

public abstract class BaseDaoImpl<T> extends SqlSessionDaoSupport implements BaseDao<T> {
	@Override
	@Autowired
	public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
		super.setSqlSessionFactory(sqlSessionFactory);
	}

	Class<T> clazz;
	ParameterizedType pt;
	String clsname;

	public BaseDaoImpl() {
		pt = (ParameterizedType)this.getClass().getGenericSuperclass();     //cn.tax.nsfw..coredao.impl.BaseDaoImpl<cn.tax.nsfw.user.entity.User>
		clazz = (Class<T>)pt.getActualTypeArguments()[0];  //cn.tax.nsfw.user.entity.User
		clsname=clazz.getSimpleName();
		System.out.println(clsname+"構造");
	}

	@Override
	public void save(T entity) {
		System.out.println(clsname+"方法");
		getSqlSession().insert("com.dao."+clsname+"Mapper.save",entity);
	}

	@Override
	public void delete(T entity) {

	}

	@Override
	public void update(T entity) {

	}

	@Override
	public T findById(Serializable id) {
		return null;
	}

	@Override
	public List<T> getAll() {
		return null;
	}
}

           

3,Usermapper’

public interface UserMapper extends BaseDao<User> {
	//public int save( String username, String pwd);
	public User fintByUsername(String username);
}

           

4,UserDaoImpl

@Repository("userMapper")
public class UserDaoImpl extends BaseDaoImpl<User> implements UserMapper {

	public User fintByUsername(String username){
		return getSqlSession().selectOne("com.dao.UserMapper.findByUsername",username);
	}
}
           

5,application.properties

mybatis.mapper-locations=classpath:config/*.xml