allcommentsaction.java

模仿当当网基于struts+hierbernate与mysql的商务网站。

package org.whatisjava.dang.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.whatisjava.dang.domain.Book;
import org.whatisjava.dang.domain.Comment;
import org.whatisjava.dang.service.CommentService;

public class AllCommentsAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm arg1,
			HttpServletRequest request, HttpServletResponse arg3) throws Exception {
		CommentService service1 = new CommentService();

		String IdStr = request.getParameter("id");
		if (IdStr != null) {
			int id = Integer.parseInt(IdStr);
			Book book =new Book();
			book.setId(id);
			List<Comment> list = service1.findCommentByProduct(book,true);
			request.setAttribute("bookId", id);
			request.setAttribute("commentNum", list.size());
			request.setAttribute("comments", list);
		}
		return mapping.findForward("success");
	}

}