这是一个创建于 693 天前的主题，其中的信息可能已经有所发展或是发生改变。
这是过滤器方法
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest)req; HttpServletResponse respOnse= (HttpServletResponse)resp; HttpSession session = request.gtSession(); String path = request.getRequestURI(); if(path.contains("login.jsp") || path.contains("/login") ||path.contains("register.jsp") ||path.contains("register") || path.contains("/DrawValidateCode") || path.contains("/layui") || path.contains("/image")){ chain.doFilter(req, resp); //登录页面，登录请求，验证码请求，前端资源和图片一律放行 }else{ String username = (String)session.getAttribute("username"); if (username == null){ //用户不存在一律重定向到登录页 response.sendRedirect(request.getContextPath() + "/login.jsp"); }else { chain.doFilter(req, resp); } } }
这个注册 @WebServlet(urlPatterns = "/addUser") public class RegisterServlet extends HttpServlet {
@Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.printf("1111111111111"); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); String jsOnRegistration= RequestUtil.getRequestBody(req); Gson gson = new Gson(); JsonObject jsOnObject= new JsonParser().parse(jsonRegistration).getAsJsonObject(); String username = jsonObject.get("username").getAsString(); String password = jsonObject.get("password").getAsString(); resp.setContentType("application/json"); BaseResponse<Integer> baseRespOnse= new BaseResponse<Integer>(); boolean registratiOnSuccess= AdminDao.insertAdministrator(username, password); if (registrationSuccess) { baseResponse.setCode(200); baseResponse.setMsg("注册成功"); resp.sendRedirect(req.getContextPath() + "/login.jsp"); } else { baseResponse.setCode(500); baseResponse.setMsg("注册失败，请重试"); } PrintWriter out = resp.getWriter(); out.print(gson.toJson(baseResponse)); out.flush(); out.close(); } }
前端就 layui' <script> layui.use(['form'], function(){ var form = layui.form;
form.on('submit(registrationForm)', function(data){ var formData = { username: data.field.username, password: data.field.password }; $.ajax({ url: '/addUser', type: 'POST', data: JSON.stringify(formData), success: function(res) { if(res.code === 200) { layer.msg('注册成功！'); window.location.href = '/login.jsp'; } else { layer.msg('注册失败！'); } }, error: function(error) { layer.msg('注册请求失败：' + error.statusText); } }); return false; }); }); 就是进不了这个放 addUser 打断也调试了看不出问题  | 1 mgzu 2023-12-19 17:24:32 +08:00 github 整个 demo 先，这没法看 |
 | 2 hemingyang OP |
| 3 hemingyang OP @mgzu 我上传了，大佬看看 |
 | 4 fiveStarLaoliang 2023-12-19 18:38:37 +08:00 写惯了 springboot 项目, 现在遇到一个 jsp 的项目, 直接懵逼了, 都忘了怎么跑起来了 |
 | 5 hemingyang OP @fiveStarLaoliang 我也是看得头大，哈哈，用 idea 摸索了会才运行起来 |
 | 6 undeflife 2023-12-19 18:52:03 +08:00 不确定是不是这个原因 https://stackoverflow.com/questions/26089902/webservlet-annotation-doesnt-work-with-tomcat-8 web-app version 要大于 3 |
| 7 hemingyang OP @undeflife 不是这个原因，我就新加了注册方法，其实其他请求都正常，我怀疑 https://github.com/hemingyang/studentManagement/blob/main/src/main/java/com/zcx/studentManagement/filter/LoginFilter.java 这个过滤器的原因 |
| 8 fiveStarLaoliang 2023-12-19 19:12:01 +08:00 你把 path 打印一下呗, 看看请求的具体路径是什么 |
 | 9 taogen 2023-12-19 19:22:52 +08:00 你请求的路径是什么?有没有加 Context Path ？ request URI = Context Path + Servlet Path + Path Info + Query String e.g. http://localhost:8080/myproject/myservlet/remove?id=1 - Context Path: `/myproject` - Servlet Path: `/myservlet` - Path Info: `/remove` - Query String: `?id=1` |
 | 10 chanchan 2023-12-19 19:32:17 +08:00 看响应 404 ？估计路径不对 |
 | 11 zoharSoul 2023-12-19 19:51:47 +08:00 要不咱还是整个 spring 吧 |
 | 12 siweipancc 2023-12-19 21:11:18 +08:00 哇塞, 够原始, 我喜欢 |
 | 13 javak 2023-12-19 22:51:49 +08:00  1 @hemingyang 这 demo 给的太不负责了啊。 整成 maven 或者 gradle 或者 ant 的项目，把依赖弄齐，然后说明怎么跑起来了。直接丢源码，让我们自己去补全依赖。 |
 | 14 ikas 2023-12-19 23:30:44 +08:00 jdk17 加 tomcat8.5 测试了,可以访问到 addUser ,get 与 post 都可以 |
| 15 hemingyang OP |
| 16 hemingyang OP @ikas 我就想加个注册功能不知道为啥就是进不了方法 |
 | 17 xuanbg 2023-12-20 08:30:52 +08:00 后端方法进不去可以肯定是路径的问题，盲猜是文件没有访问权限 |
| 18 hemingyang OP @xuanbg https://mjj.today/i/8TMDkO 这是请到后台的信息 |
| 19 hemingyang OP 解决了 直接改成了 <form class="layui-form" method="post" id="registrationForm" action="/addUser"> 原生的 action 没有 layui <script> layui.use(['form'], function(){ var form = layui.form; form.on('submit(registrationForm)', function(data){ var formData = { username: data.field.username, password: data.field.password }; $.ajax({ url: '/addUser', type: 'POST', data: JSON.stringify(formData), success: function(res) { if(res.code === 200) { layer.msg('注册成功！'); window.location.href = '/login.jsp'; } else { layer.msg('注册失败！'); } }, error: function(error) { layer.msg('注册请求失败：' + error.statusText); } }); return false; }); }); </script> |
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