actionadminlogin.java

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package com.coffee.StudyBbs;

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.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.*;


public final class ActionAdminLogin extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
	
   		LoginUserForm userform = (LoginUserForm) form;         
		String name = userform.getUsername();
		String psw = userform.getPassword();
		

   		ServletContext context = servlet.getServletContext();
		DataSource dataSource = (DataSource)context.getAttribute(Constants.DATASOURCE_KEY);
						
        DB db = new DB(dataSource);
        HttpSession session = request.getSession(true);
        
		String PageForward;
		ActionMessages errors = new ActionMessages();
        if ("管理员".equals(User.getUserGrade(db,name))){
			session.setAttribute(Constants.LOGIN_USERGRADE_KEY,"管理员");
  			PageForward = "toAdminMain";
        }
        else if ("斑竹".equals(User.getUserGrade(db,name))){
			session.setAttribute(Constants.LOGIN_USERGRADE_KEY,"斑竹");
  			PageForward = "toAdminMain";
        }
        else {
            errors.add(ActionMessages.GLOBAL_MESSAGE,
                           new ActionMessage("errors.accessDeny"));
			if (!errors.isEmpty()) {
				saveErrors(request, errors);
			} 
 			PageForward="toWrong";  
        }	
		
        db.close();
 	  	return  mapping.findForward(PageForward);  
	}

}