java - 此 URL Java servlet 不支持 HTTP 方法 POST

Question

有人可以告诉我为什么我收到错误:HTTP 状态 405 – 不允许方法吗？我正在尝试完成 doPost() 方法之后，用户将被重定向到“/logout” Controller ，其中 session 无效。这很有趣，因为方法被调用，做了所有应该做的事情(更新数据库中的用户)，但是在发送给用户错误405之后。另一个我使用 doPost() (例如:LoginController)工作良好的地方，但是当我尝试 compere 并发现错误，我没有看到任何错误:<

<div class="container">
    <div class="col-md-8 col-md-offset-2">
        <form method="post" action="account">
            <div class="form-group">
                <label for="email">Email address</label>
                <input name="email" type="email" class="form-control" id="email"
                       value="${sessionScope.loggedUser.email}" required aria-describedby="emailHelp"
                       placeholder="Enter email">
            </div>
            <div class="form-group">
                <label for="password">Password</label>
                <input name="password" type="password" minlength="5" maxlength="40" required class="form-control"
                       id="password" placeholder="Password">
            </div>
            <div class="form-group">
                <label for="repeatPassword">Repeat Password</label>
                <input name="repeatPassword" type="password" minlength="5" maxlength="40" required class="form-control"
                       id="repeatPassword" placeholder="Password">
            </div>
            <input class="btn btn-lg btn-primary btn-block" type="submit" value="Save changes"/>
        </form>
    </div>
</div>

@WebServlet("/account")
public class AccountController extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        String email = req.getParameter("email");
        String password = req.getParameter("password");
        String repeatPassword = req.getParameter("repeatPassword");

        if (email == null || password == null || repeatPassword == null) {
            doGet(req, resp);
            return;
        }

        if (password.equals(repeatPassword)) {
            HttpSession session = req.getSession();
            User user = (User) session.getAttribute("loggedUser");
            user.setEmail(email);
            String sha1hexPassword = DigestUtils.sha1Hex(password);
            user.setPassword(sha1hexPassword);
            UserService service = new UserService();

            try {
                service.update(user);
            } catch (UpdateObjectException e) {
                e.printStackTrace();
            }
            req.getRequestDispatcher("/logout").forward(req, resp);
        } else {
            req.setAttribute("errorMessage", "Passwords not the same");
            req.setAttribute("fragment", "account");
            req.getRequestDispatcher("WEB-INF/index.jsp").forward(req, resp);
        }
    }
}

感谢您的任何提示。

Answer 1

您的 doGet() 方法调用位于服务器 doPost() 代码内。您应该重定向响应，doGet 用于接收 GET 请求和任何查询字符串。