HTTP状态405 – 此URL不支持HTTP方法POST
我收到错误HTTP Status 405 - HTTP method POST is not supported by this URL当我使用以下代码时HTTP Status 405 - HTTP method POST is not supported by this URL （下面）…导致问题的行（显然）是getServletContext().getRequestDispatcher("/EditObject?id="+objId).forward(request, response);
package web.objects; import java.io.IOException; import java.sql.SQLException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import dao.ObjDetailsDao; @SuppressWarnings("serial") public class EditObjectText extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { int objId = Integer.parseInt(request.getParameter("objId")); String text = (String)request.getParameter("description"); ObjDetailsDao oddao = new ObjDetailsDao(); try { oddao.modifyText(text, objId); ///////////// getServletContext().getRequestDispatcher("/EditObject?id="+objId).forward(request, response); //////////// } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ServletException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
编辑：我添加了throws ServletException, IOException建议，但这并没有改变错误。
编辑：EditObject servlet看起来像这样
@SuppressWarnings("serial") public class EditObject extends HttpServlet{ public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { int objId = Integer.parseInt(request.getParameter("id")); dispPage(objId, request, response); } private void dispPage(int objId, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{ // ... lots of code in here getServletContext().getRequestDispatcher("/jsp/objectPageEdit.jsp").forward(request, response); } }
另一个编辑：基本上我不能做我正在做的事情。 我需要的是，用户提交一个post请求，然后我将他/她引回到使用Get方法而不是Post的servlet。 如何在不收到错误的情况下进行此推荐？ 提前致谢。
（对不起我之前发布的错误答案，我删除了它） 。
显然，URL /EditObject映射到另一个没有doPost()方法覆盖的servlet上。 它也会在RequestDispatcher#forward()上调用，因为当前运行HTTP请求的方法是POST。 默认的 HttpServlet#doPost()实现将返回HTTP 405.如果您的实际意图是在其上触发GET请求以便调用doGet()方法，那么您应该使用HttpServletResponse#sendRedirect()来代替。
response.sendRedirect("/EditObject?id="+objId);
将doPost（）添加到EditObject类：
@SuppressWarnings("serial") public class EditObject extends HttpServlet{ public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { process(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { process(request, response); } public void process(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { int objId = Integer.parseInt(request.getParameter("id")); dispPage(objId, request, response); } private void dispPage(int objId, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{ // ... lots of code in here getServletContext().getRequestDispatcher("/jsp/objectPageEdit.jsp").forward(request, response); } }