1.BaseDao接口：

?? //使用BaseDao<T> 泛型 ，在service中注入的時候，只需要將T換為對應的bean即可

?? public interface BaseDao<T> {

?? ?public int save(T t);

?? ?public int update(String hql, Object[] paramlist);

?? ?public int delete(String hql, Object[] paramlist);

?? ?public int countAll(String hql, Object[] paramlist);

?? ?public int countAll(String hql, String key, Object[] ids);

?? ?public int countAll(String hql, Object[] paramlist, String key, Object[] ids);
?? ?
?? ?public int countAllBysql(String hql, T t, Object[] paramlist, String key, Object[] ids);

?? ?public Map<String, Object> get(String hql);

?? ?public Map<String, Object> get(String hql, Object[] paramlist);

?? ?public int updateBySql(String hql, Object[] paramlist);

?? ?public List<Map<String, Object>> listAll(String hql, String parkey,
?? ??? ??? ?Object[] ids);

?? ?public List<Map<String, Object>> listAllPage(String hql, String parkey,
?? ??? ??? ?Object[] ids, Object[] paramlistPage);

?? ?public List<Map<String, Object>> listAllPage(String hql,
?? ??? ??? ?Object[] paramlist, String key, Object[] ids, Object[] paramlistPage);
?? ?
?? ?public List<Map<String, Object>> listAllPageBysql(String hql,T t,
?? ??? ??? ?Object[] paramlist, String key, Object[] ids, Object[] paramlistPage);

?? ?public List<Map<String, Object>> listAll(String hql);

?? ?public List<T> listAllBySql(String hql, T t, Object[] paramlist);

?? ?public List<Map<String, Object>> listAll(String hql, Object[] paramlist);

?? ?public List<T> listObject(String hql, Object[] paramlist);

?? ?public List<Map<String, Object>> listAllPage(String hql,
?? ??? ??? ?Object[] paramlist, Object[] paramlistPage);

?? ?public List<Map<String, Object>> listAllPage(String hql, String key,
?? ??? ??? ?Object[] ids);

?? ?public List<Map<String, Object>> listAllPage(String hql,
?? ??? ??? ?Object[] paramlist, String key, Object[] ids);
}

2.接口的實現 BaseDaoimpl

@Repository("baseDao")
public class BaseDaoImpl<T> implements BaseDao<T> {

?? ?protected static final Logger LOGGER = LoggerFactory
?? ??? ??? ?.getLogger(BaseDaoImpl.class);

?? ?@Autowired
?? ?@Qualifier("sessionFactory")
?? ?private SessionFactory sessionFactory;

?? ?public Session getSession() {
?? ??? ?return sessionFactory.getCurrentSession();
?? ?}

?? ?@Override
?? ?public int save(T t) {
?? ??? ?return (int) getSession().save(t);
?? ?}

?? ?@Override
?? ?public int update(String hql, Object[] paramlist) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?return query.executeUpdate();
?? ?}

?? ?@Override
?? ?public int updateBySql(String hql, Object[] paramlist) {
?? ??? ?Query query = getSession().createSQLQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?return query.executeUpdate();
?? ?}

?? ?@Override
?? ?public int delete(String hql, Object[] paramlist) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?return query.executeUpdate();
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public int countAll(String hql, Object[] paramlist) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results.size();
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public int countAll(String hql, String key, Object[] ids) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results.size();
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public int countAll(String hql, Object[] paramlist, String key, Object[] ids) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results.size();
?? ?}
?? ?
?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public int countAllBysql(String hql, T t, Object[] paramlist, String key, Object[] ids) {
?? ??? ?Query query = getSession().createSQLQuery(hql).addEntity(t.getClass());
?? ??? ?setParameters(query, paramlist);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results.size();
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAll(String hql) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAll(String hql, Object[] paramlist) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAll(String hql, String key,
?? ??? ??? ?Object[] ids) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<T> listAllBySql(String hql, T t, Object[] paramlist) {
?? ??? ?Query query = getSession().createSQLQuery(hql).addEntity(t.getClass());// ;
?? ??? ?setParameters(query, paramlist);
?? ??? ?List<T> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<T> listObject(String hql, Object[] paramlist) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?List<T> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAllPage(String hql,
?? ??? ??? ?Object[] paramlist, Object[] paramlistPage) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?query.setFirstResult(Integer.parseInt(paramlistPage[0] + ""));
?? ??? ?query.setMaxResults(Integer.parseInt(paramlistPage[1] + ""));
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAllPage(String hql, String key,
?? ??? ??? ?Object[] ids, Object[] paramlistPage) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?query.setFirstResult(Integer.parseInt(paramlistPage[0] + ""));
?? ??? ?query.setMaxResults(Integer.parseInt(paramlistPage[1] + ""));
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAllPage(String hql, String key,
?? ??? ??? ?Object[] ids) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAllPage(String hql,
?? ??? ??? ?Object[] paramlist, String key, Object[] ids, Object[] paramlistPage) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?query.setFirstResult(Integer.parseInt(paramlistPage[0] + ""));
?? ??? ?query.setMaxResults(Integer.parseInt(paramlistPage[1] + ""));
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAllPageBysql(String hql,T t,
?? ??? ??? ?Object[] paramlist, String key, Object[] ids, Object[] paramlistPage) {
?? ??? ?Query query = getSession().createSQLQuery(hql).addEntity(t.getClass());
?? ??? ?setParameters(query, paramlist);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?query.setFirstResult(Integer.parseInt(paramlistPage[0] + ""));
?? ??? ?query.setMaxResults(Integer.parseInt(paramlistPage[1] + ""));
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}
?? ?
?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public Map<String, Object> get(String hql) {
?? ??? ?Map<String, Object> resultMap = new HashMap<String, Object>();
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?if (results.size() > 0) {
?? ??? ??? ?resultMap = results.get(0);
?? ??? ?}
?? ??? ?return resultMap;
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public Map<String, Object> get(String hql, Object[] paramlist) {
?? ??? ?Map<String, Object> resultMap = new HashMap<String, Object>();
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?if (results.size() > 0) {
?? ??? ??? ?resultMap = results.get(0);
?? ??? ?}
?? ??? ?return resultMap;
?? ?}

?? ?protected void setParameters(Query query, Object[] paramlist) {
?? ??? ?if (paramlist != null) {
?? ??? ??? ?for (int i = 0; i < paramlist.length; i++) {
?? ??? ??? ??? ?if (paramlist[i] instanceof Date) {
?? ??? ??? ??? ??? ?query.setTimestamp(i, (Date) paramlist[i]);
?? ??? ??? ??? ?} else if (paramlist[i] instanceof Double) {
?? ??? ??? ??? ??? ?query.setDouble(i, (double) paramlist[i]);
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?query.setParameter(i, paramlist[i]);
?? ??? ??? ??? ?}
?? ??? ??? ?}
?? ??? ?}
?? ?}

?? ?protected void setInParameters(Query query, String key, Object[] ids) {
?? ??? ?if (ids.length > 0) {
?? ??? ??? ?query.setParameterList(key, ids);
?? ??? ?}
?? ?}

?? ?@SuppressWarnings("unchecked")
?? ?@Override
?? ?public List<Map<String, Object>> listAllPage(String hql,
?? ??? ??? ?Object[] paramlist, String key, Object[] ids) {
?? ??? ?Query query = getSession().createQuery(hql);
?? ??? ?setParameters(query, paramlist);
?? ??? ?setInParameters(query, key, ids);
?? ??? ?List<Map<String, Object>> results = query.list();
?? ??? ?return results;
?? ?}

//String hql :在service 中的hql語句???? Object[] paramlist ： hql中的字段，先用？占位 ?? Object[] ids: 可以使用分頁工具，等其他對數據的操作，一般也是用？來占位?

?

}

轉載于:https://www.cnblogs.com/2860755zcj/p/5039193.html

總結

以上是生活随笔為你收集整理的Hql 中 dao 层 以及daoimpl 层的代码，让mvc 模式更直观简洁的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。