memberaction.java

课程设计期间开发的JSP系统,后台采用SQL.这是一个很好的系统,适合初学者研究

package act;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Vector;

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

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 model.login;
import model.usermn;

public class MemberAction extends Action {
    private int action;
	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		action = Integer.parseInt(request.getParameter("action"));
		switch(action){
		case 6:
			return selectMember(mapping, form, request, response);
		case 7:
			return updateBook(mapping, form, request, response);
		case 8:
			return deleteBook(mapping, form, request, response);
		case 9:
			return checkMember(mapping, form, request, response);
		}
		return super.execute(mapping, form, request, response);
	}
	private ActionForward checkMember(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		try {
			login log = new login();
			
			HttpSession session = request.getSession();
			if( request.getParameter("username")!=null && !request.getParameter("username").equals("")){
				String username =request.getParameter("username");
				String passwd = request.getParameter("passwd");
				username = new String(username.getBytes("ISO8859-1"));
				passwd = new String(passwd.getBytes("ISO8859-1"));
				log.setUsername(username);
				log.setPasswd(passwd);
				if (log.excute()){
					session.setAttribute("username",username);
					int userid = log.getUserid();
					session.setAttribute("userid",userid);
//					response.sendRedirect("userinfo.jsp");
					return mapping.findForward("main");
				}else {
					String mesg = "登录出错！" ;
				 request.setAttribute("mesg", mesg);
				 return mapping.findForward("err");
				
				}
			}
		} catch (UnsupportedEncodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}
	private ActionForward deleteBook(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		return null;
	}
	private ActionForward updateBook(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		return null;
	}
	private ActionForward selectMember(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		try {
			usermn usermodel = new usermn();
			if(usermodel.execute()){
			Vector memberlist = usermodel.getUserlist();
			request.setAttribute("members", memberlist);
			return mapping.findForward("select");
			}
			return mapping.findForward("");
		} catch (Exception e) {
			e.printStackTrace();
			return mapping.findForward("");
		}
	}

}