subaction.java

这是一个过滤器的Demo.大家可以参考下.希望能对大家有所帮助.

package com.accp.action;

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

import com.accp.dao.DataDao;
import com.accp.entity.DataBean;

public class SubAction implements Action {

	@Override
	public String doAction(HttpServletRequest request,
			HttpServletResponse response) {
		String url = "";
    	//处理参数

		int num1 = Integer.parseInt(request.getParameter("num1")) ;
		int num2 = Integer.parseInt(request.getParameter("num2")) ;
		DataBean dataBean = new DataBean(num1,num2);
		//调用Dao
		DataDao dao = new DataDao();
		int ret = dao.subData(dataBean);
		request.setAttribute("ret", ret);
		url = "/result.jsp";
    	return url;
	}

}