login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录</title>
</head>
<body>
<form action="loginCheck" method="post" >
请输入用户名:<input type="text" name="usename"><br/>
请输入密码:<input type="password" name="usepwd"><br/>
<input type="submit" value="登入">
<input type="reset">
</form>
</body>
</html>
Hello.java
package test;
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;
/**
* Servlet implementation class Hello
*/
@WebServlet("/loginCheck")
public class Hello extends HttpServlet {
private static final long serialVersionUID = 1L;
public Hello() {
super();
// TODO Auto-generated constructor stub
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String name=request.getParameter("usename");
String pwd=request.getParameter("usepwd");
String ifo="";
if("abc".equals(name)&&"123".equals(pwd))
{
ifo="欢迎你";
}
else
{
ifo="不欢迎你";
}
request.setAttribute("out", ifo);
request.getRequestDispatcher("/info.jsp").forward(request, response);
}
}
info.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>输出页面</title>
</head>
<body>
<%=request.getAttribute("out") %>
</body>
</html>