?? pagectrlaction.java
字號:
package BookStore;
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.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import javax.servlet.ServletContext;
import javax.sql.DataSource;
import java.sql.Connection;
import javax.servlet.http.*;
import java.util.*;
import org.apache.struts.action.DynaActionForm;
public final class PageCtrlAction extends Action{
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws Exception {
DynaActionForm pageIdForm = (DynaActionForm) form;
Integer pageId = (Integer)pageIdForm.get("pageId");
int iPageId = 0;
if (pageId!=null) iPageId = pageId.intValue();
if (iPageId<0) iPageId = 0;
ServletContext context = servlet.getServletContext();
DataSource dataSource = (DataSource)context.getAttribute(Constants.DATASOURCE_KEY);
DB db = new DB(dataSource);
HttpSession session = request.getSession(true);
Vector bookList = new Vector();
SearchStatus schSta = new SearchStatus();
schSta = (SearchStatus)session.getAttribute(Constants.BOOK_SEARCH_STATUS_KEY);
String PageForward;
ActionMessages errors = new ActionMessages();
if (schSta.getBookCount()==0){
PageForward="toBookMain";
}
else
if (schSta.getBookCount()<iPageId * Constants.BOOK_PAGE_SIZE + 1){
iPageId--;
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.pageEnd"));
if (!errors.isEmpty()) {
saveErrors(request, errors);
}
PageForward="toWrong";
}
else{
schSta.setPageId(iPageId);
bookList = Book.SearchBook(db,schSta.getMode(),schSta.getCatId(),schSta.getField(),schSta.getKey());
session.setAttribute(Constants.BOOK_LIST_KEY,bookList);
session.setAttribute(Constants.BOOK_SEARCH_STATUS_KEY,schSta);
PageForward="toBookMain";
}
db.close();
return mapping.findForward(PageForward);
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -