requestprocessorex.java

该代码是Java数据库高级编程宝典中的重要的代码

package jdbcbook.shopping.util;

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

import org.apache.struts.action.ActionMapping;
import org.apache.struts.tiles.TilesRequestProcessor;

import java.io.IOException;

import jdbcbook.shopping.util.SessionUtil;
import jdbcbook.shopping.form.Userinfo;

public class RequestProcessorEx extends TilesRequestProcessor
{
	protected boolean processRoles( HttpServletRequest request,
								HttpServletResponse response,
								ActionMapping mapping )
							throws IOException, ServletException
	{
		String[] roles = mapping.getRoleNames();

		if( roles!=null && roles.length>0 )
		{
			Userinfo user = SessionUtil.getUserinfo( request );
			if( user==null || !user.isRoles( roles ) )
			{
				// 用户没有登录，或者角色不对
				response.sendRedirect( "../index.do" );
			}
		}
		
		return true;
	}
}