这个Servlet的任务是用户登录
条件：
如果登陆账户名为“admin”，密码为“123456”，则判断登陆成功，跳转到“success.html”页面，展示内容为：“登陆成功！”。
反之，登陆账户和命名的账号密码不一致则跳转“error.html”页面，展示内容为“登陆失败”。

项目要求

首先展示一段错误代码示例：

Login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
<form action="LoginServlet" method="post">
    用户名：<input type="text" name="username"><br>
    密码：<input type="password" name="password"><br>
    性别：<input type="radio" name="sex" value="男"> 男
          <input type="radio" name="sex" value="女"> 女<br>
    爱好：<input type="checkbox" name="hobby" value="看书">看书
         <input type="checkbox" name="hobby" value="画画">画画
         <input type="checkbox" name="hobby" value="听歌">听歌<br>
    <input type="submit" value="登录">

</form>

</body>
</html>

LoginServlet

import javax.servlet.ServletContext;
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 java.io.IOException;
import java.io.PrintWriter;

@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html; charset=utf-8");
        request.setCharacterEncoding("utf-8");
//        ServletContext context= this.getServletContext();
        PrintWriter out = response.getWriter();
        String name = request.getParameter("username");
        String password =request.getParameter("password");
        String sex =request.getParameter("sex");


        out.println("用户名：" + name+"<br>");
        out.println("密码：" + password+"<br>" );
        out.println("性别：" + sex+"<br>");

        String [] hobbys = request.getParameterValues("hobby");
        out.println("爱好：");
        for (int i =0; i<hobbys.length;i++) {
        out.println(hobbys[i]+" ");
        }
        if (name.equals("admin") && password.equals("123456")){
            request.getRequestDispatcher("/success.html").forward(request,response);
        }else {
            out.println("用户名或密码输入有误...3秒后将自动跳转 <br>");
            response.setHeader("Refresh","3;URL=/error.html");
        }
        }


    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request,response);

    }
}

success.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Successful</title>
</head>
<body>
登录成功
</body>
</html>

error.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Error</title>
</head>
<body>
登录失败
</body>
</html>

项目打包下载

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这样看的代码好似没什么问题(～￣▽￣)～
but！为什么错误跳转出来是乱码？！！！

Admin