问题描述
我正在使用Liferay(在JSP中使用liferay-ui)和SpringMVC开发Portlet.
I am developing a Portlet with Liferay (using liferay-ui in the JSP) and SpringMVC.
我的JSP中包含以下代码:
I have the following code in my JSP:
<liferay-ui:search-container delta="5" emptyResultsMessage="no books!">
<%
List<Book> bookList = (List<Book>)request.getAttribute("bookList");
List<Book> bookListView = ListUtil.subList(bookList, searchContainer.getStart(), searchContainer.getEnd());
%>
<liferay-ui:search-container-results results="<%= bookListView %>" total="${numberOfBooks}">
</liferay-ui:search-container-results>
...
我真的很想摆脱JSP中的Java代码块，并将bookListView作为模型属性，就像上面代码中的numberOfBooks一样.
I'd really like to get rid of the Java Code Block in the JSP and have the bookListView as model attribute just like numberOfBooks in the above code.
但是，我找不到从Spring Controller访问searchContainer来获取分页的开始和结束的方法...
However, I can't find a way to access searchContainer from the Spring Controller to get the start and end of the pagination...
有什么想法吗?谢谢！
推荐答案
这可能对您有用:
SearchContainer<Book> searchContainer = new SearchContainer<Book>(renderRequest, renderResponse.createRenderURL(), null, "there are no books");
否则，
您可以从请求中获取参数:delta=20& cur=2
其中，cur是当前请求的页面，而delta是页面上的项目总数.
借助此功能，您可以计算出开始(0,20,40，...)和结束(19,39,59，...)，就像liferay的 SearchContainer 与此方法:
You can get the parameters from request: delta=20 & cur=2
where cur is the current page which is requested and delta is the total number of items on a page.
With this you can calculate the start (0,20,40, ...) and end (19,39,59, ...) as does liferay's SearchContainer with this method:
private void _calculateStartAndEnd() {
_start = (_cur - 1) * _delta;
_end = _start + _delta;
_resultEnd = _end;
if (_resultEnd > _total) {
_resultEnd = _total;
}
}
这篇关于在SpringMVC Controller中从Liferay搜索容器访问分页信息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！