JSP第十三周作业

1.第十二周上机作业（邮件功能）的控制层代码改用为servlet实现。

dodelete.java

package doservlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.MsgDao;

/**
 * Servlet implementation class dodelete
 */
@WebServlet("/dodelete")
public class dodelete extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public dodelete() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		int id=Integer.parseInt(request.getParameter("id"));
		MsgDao md=new MsgDao();
		md.delMail(id);
		response.sendRedirect("main.jsp");
	}

}

dologin,java

package doservlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.UsersDao;

/**
 * Servlet implementation class dologin
 */
@WebServlet("/dologin")
public class dologin extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public dologin() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		String uname = request.getParameter("uname");
		String upwd = request.getParameter("upwd");
		UsersDao ud=new UsersDao();
		if(ud.login(uname, upwd)){
			request.getSession().setAttribute("uname", uname);
			request.getRequestDispatcher("main.jsp").forward(request, response);
		}else{
			response.getWriter().print("登陆失败，即将跳回登陆页.....");
			response.setHeader("refresh", "5;url=login.jsp");
		}
	}

}

doreg.java

package doservlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.UsersDao;

/**
 * Servlet implementation class doreg
 */
@WebServlet("/doreg")
public class doreg extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public doreg() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		String uname = request.getParameter("uname");
		String upwd = request.getParameter("upwd");
		UsersDao ud=new UsersDao();
		ud.reg(uname, upwd);
		request.getRequestDispatcher("login.jsp").forward(request, response);
	}

}

dewrite.java

package doservlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.MsgDao;
import entity.Msg;

/**
 * Servlet implementation class dowrite
 */
@WebServlet("/dowrite")
public class dowrite extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public dowrite() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding("utf-8");
		String uname=(String)request.getSession().getAttribute("uname");
		String addressee=request.getParameter("addressee");
		String title=request.getParameter("title");
		String content=request.getParameter("content");
		
		Msg m=new Msg();
		m.setContent(content);
		m.setSender(uname);
		m.setAddressee(addressee);
		m.setTitle(title);
		
		MsgDao md=new MsgDao();
		md.addMsg(m);
		
		response.getWriter().print("发送成功.....");
		response.setHeader("refresh", "5;url=main.jsp");
	}

}

2.学习通发布了考试，截止到本周六。