小程序java服务器端

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("/login")
public class LoginServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        // 验证用户名和密码
        if ("admin".equals(username) && "123456".equals(password)) {
            response.setContentType("application/json");
            PrintWriter out = response.getWriter();
            out.print("{\"status\":\"success\"}");
        } else {
            response.setContentType("application/json");
            PrintWriter out = response.getWriter();
            out.print("{\"status\":\"failure\"}");
        }
    }
}