usersearchaction.java

这是一个公告管理系统

package nm.admin.action;

import nm.Constants;
import nm.DB;
import nm.User;
import nm.admin.form.UserInfoForm;

import java.util.Vector;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.sql.DataSource;

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;

public final class UserSearchAction extends Action {
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		UserInfoForm searchUserForm = (UserInfoForm) form;
		String username = (String) searchUserForm.getUsername();

		ServletContext context = servlet.getServletContext();
		DataSource dataSource = (DataSource) context
				.getAttribute(Constants.DATASOURCE_KEY);
		DB db = new DB(dataSource);

		HttpSession session = request.getSession();
		ActionMessages errors = new ActionMessages();
		String pageForward = "ToErrorPage";

		try {
			Vector users = new Vector();
			users = User.search(db, username);
			session.setAttribute(Constants.USER_LIST_KEY, users);
			pageForward = "ToUserList";
		} catch(Exception e) {
			errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
					"error.search.failed"));
			if (!errors.isEmpty()) {
//				saveErrors(request, errors);
				this.saveMessages(request, errors);
			}
		}

		db.close();

		return (mapping.findForward(pageForward));
	}
}