HttpServletRequest

1. 獲取前端傳遞引數
   

2. 請求轉發

public class LoginServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding(
 
"utf-8");
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        String[] hobbies = req.getParameterValues("hobbies");

        System.out.println("==============");
        System.out.
 
println(username);
        System.out.println(password);
        System.out.println(Arrays.toString(hobbies));
        System.out.println("======================");

        System.out.println(req.getContextPath());
        req.getRequestDispatcher("/success.jsp").forward(req,resp)
 
;
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}