actionuseradmin.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 java.util.*;
import javax.servlet.http.*;

public final class ActionUserAdmin extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
			
		
        HttpSession session = request.getSession();
		Vector users = new Vector();
		
   		ServletContext context = servlet.getServletContext();
		DataSource dataSource = 
			(DataSource)context.getAttribute(Constants.DATASOURCE_KEY);
						
		DB db = new DB(dataSource);
        String usergrade=(String)session.getAttribute(Constants.LOGIN_USERGRADE_KEY);
        
		String PageForward;
		ActionMessages errors = new ActionMessages();
		if ("管理员".equals(usergrade)){
			users = User.Search(db,"");
			session.setAttribute(Constants.USER_LIST_KEY,users);
 			PageForward="toUserAdmin";  
		}
        else {
            errors.add(ActionMessages.GLOBAL_MESSAGE,
                           new ActionMessage("errors.accessDeny"));
			if (!errors.isEmpty()) {
				saveErrors(request, errors);
			} 
 			PageForward="toWrong";  
        }	
   		
		db.close();
	   	return (mapping.findForward(PageForward));					
 	}	
}