我有这段代码:
<tr>
<td><p><%= image_tag("zombie_profile.png", width: '100px') %><%= gurgle.status %></p></td>
<td><p><%= @user.email %></p></td>
</tr>
</tbody>
</table>
&#34; List类型的表达式需要未经检查的转换才能符合 列表与LT; CategoryTypes&gt;&#34;
如何修复我的代码以删除此警告?
答案 0 :(得分:0)
首先将此方法添加到您的课程中:
public static <T> List<T> castList(Class<? extends T> clazz, Collection<?> c) {
List<T> r = new ArrayList<T>(c.size());
for(Object o: c)
r.add(clazz.cast(o));
return r;
}
试试这个:
DynamicQuery dynamicQuery = DynamicQueryFactoryUtil.forClass(OpenBoard.class);
DynamicQuery categoryQuery = DynamicQueryFactoryUtil.forClass(CategoryTypes.class);
User user=UserLocalServiceUtil.getUser(PortalUtil.getUserId(request));
categoryQuery.add(RestrictionsFactoryUtil.eq("categoryTarget",String.valueOf("O")));
List<CategoryTypes> category_list = castList(CategoryTypes.class, CategoryTypesLocalServiceUtil.dynamicQuery(categoryQuery));