@Data

public class BaseDomain {

    private Long id;

}

public interface BaseMapper {

    //基础查询

    void save(T d);

    void remove(Long id);

    void update(T d);

    T loadById(Long id );

    List loadAll();

    //分页查询

    //查询总条数

    Long queryCount(BaseQuery query);

    //查询当前的页数

    List queryData(BaseQuery query);

}

package cn.itsource.basic.service;

import cn.itsource.basic.query.BaseQuery;

import cn.itsource.basic.util.PageList;

import java.io.Serializable;

import java.util.List;

public interface IBaseService {

    //添加一个对象

    void add(T t);

    //删除一个对象

    void del(Serializable id);

    //更新一个对象

    void update(T t);

    //通过id获取一个对象

    T getById(Serializable id);

    //获取所有对象

    List getAll();

    //分页查询

    PageList queryData(BaseQuery query);

}

//不需要加@Service,子类继承时添加

//类级别事务为读事务,分别在增删改的方法上面加写事务

@Transactional(readOnly = true,propagation = Propagation.SUPPORTS)

public class BaseServiceImpl implements IBaseService {

    @Autowired

    private BaseMapper baseMapper;

    //@Transactional(readOnly = false,propagation = Propagation.REQUIRED)

    @Transactional

    @Override

    public void add(T t) {

        baseMapper.save(t);

//        int i = 1/0;

    }

    @Transactional

    @Override

    public void del(Serializable id) {

        baseMapper.remove(id);

    }

    @Transactional

    @Override

    public void update(T t) {

        baseMapper.update(t);

    }

    @Override

    public T getById(Serializable id) {

        return baseMapper.loadById(id);

    }

    @Override

    public List getAll() {

        return baseMapper.loadAll();

    }

    @Override

    public PageList queryData(BaseQuery query) {

        Long count = baseMapper.queryCount(query);

        if (count==null || count.intValue()<1)

            return new PageList<>();

        List data = baseMapper.queryData(query);

        return new PageList<>(count,data);

    }

}