📄 loginservlet.java
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package cn.com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.com.dao.LoginDao;
public class LoginServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=gbk");
request.setCharacterEncoding("gbk");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
String name = request.getParameter("name");
String pwd=request.getParameter("pwd");
request.setAttribute("name", name);
request.setAttribute("pwd", pwd);
LoginDao lg=new LoginDao();
boolean flag;
flag=lg.stuLogin(name, pwd);
if(flag)
{
request.getRequestDispatcher("/stu/student.jsp").forward(request, response);
}
else
{
request.setAttribute("error","用户名或密码不正确！");
request.getRequestDispatcher("/index.jsp").forward(request, response);
}
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet( request, response);
}
}
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