servlet代码

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package Login;

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 loginServlet
*/
@WebServlet(asyncSupported = true, urlPatterns = { "/loginServlet" })
public class loginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public loginServlet() {
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
//response.getWriter().append("Served at: ").append(request.getContextPath());
}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
//response.setCharacterEncoding("UTF-8");
//保证编码正确，防止乱码，
response.setContentType("text/html;charset=UTF-8");
//web服务器响应界面，
request.setCharacterEncoding("UTF-8");
//接收数据
String name=request.getParameter("name");
String password=request.getParameter("password");
//利用jsp的内置对象进行数据的接收。。。
//向浏览器输出的内容用此方法
// response.getWriter().println(name);
// response.getWriter().println(password);
if("souldancer".equals(name)&&"yin0828jiayou".equals(password)){
response.sendRedirect("adminok.html");
}
else{
response.getWriter().println("<h1>用户名或密码错误</h1>");
response.getWriter().println("<form action='/JSP/loginServlet' method='post'>");
response.getWriter().println("姓名<input type='text' name='name'><br>");
response.getWriter().println("密码<input type='password' name='password'><br>");
response.getWriter().println("<input type='submit' name='name'><br>");
response.getWriter().println("</form>");

}

}

}

html

<!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>Insert title here</title>
</head>
<body>
<form action="/JSP/loginServlet" method="post">//注意这里呀，，你提交的数据的界面的文件的格式：/项目名/servlet文件
<table>
姓名<input type="text" name="name">
<br>
密码<input type="password" name="password">
<br>
<input type="submit" name="name">
</table>
</form>
</body>
</html>

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