final error

client/src/index.js

 import React from 'react';
 import ReactDOM from 'react-dom';
-import './index.css';
-import App from './App';
-import reportWebVitals from './reportWebVitals';
+import { BrowserRouter as Router, Route, Redirect, Switch } from 'react-router-dom';
+import * as serviceWorker from './serviceWorker';
+import 'bootstrap';
+import 'bootstrap/dist/css/bootstrap.css';
+import axios from 'axios';
+import { PrivateRoute } from './Components/PrivateRoute';
+
+import Login from './Pages/LoginPage';
+import Home from './Pages/HomePage';
+import Signup from './Pages/SignupPage';
+import Find from './Pages/FindPage';
+import Change from './Pages/ChangePage';
+import Apply from './Pages/ApplyPage';
+import Check from './Pages/CheckPage';
+import Notice from './Pages/NoticePage';
+import ACheck from './Pages/ACheckPage';
+import Write from './Pages/WritePage';
+import Modify from './Pages/ModifyPage';
+
+axios.defaults.validateStatus = function (status) {
+  return status < 500; // default
+}
 
 ReactDOM.render(
-  <React.StrictMode>
-    <App />
-  </React.StrictMode>,
+  <Router>
+    <Switch>
+      <PrivateRoute exact path="/" component={Home} />
+      <Route path="/login" component={Login} />
+      <Route path="/home" component={Home} />
+      <Route path="/signup" component={Signup} />
+      <Route path="/find" component={Find} />
+      <Route path="/change" component={Change} />
+      <Route path="/apply/:id" component={Apply} />
+      <Route path="/check/:id" component={Check} />
+      <Route path="/modify/:id" component={Modify} />
+      <Route path="/write" component={Write} />
+      <Route path="/notice" component={Notice} />
+      <Route path="/acheck/:id" component={ACheck} />
+      <Redirect path="/home" to="/" />
+      <Redirect path="/change/:id" to="/change" />
+      <Redirect path="/notice" to="/notice" />
+    </Switch>
+  </Router>,
   document.getElementById('root')
 );
 
-// If you want to start measuring performance in your app, pass a function
-// to log results (for example: reportWebVitals(console.log))
-// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
-reportWebVitals();
+// If you want your app to work offline and load faster, you can change
+// unregister() to register() below. Note this comes with some pitfalls.
+// Learn more about service workers: https://bit.ly/CRA-PWA
+serviceWorker.unregister();
\ No newline at end of file

client/src/serviceWorker.js

+// This optional code is used to register a service worker.
+// register() is not called by default.
+
+// This lets the app load faster on subsequent visits in production, and gives
+// it offline capabilities. However, it also means that developers (and users)
+// will only see deployed updates on subsequent visits to a page, after all the
+// existing tabs open on the page have been closed, since previously cached
+// resources are updated in the background.
+
+// To learn more about the benefits of this model and instructions on how to
+// opt-in, read https://bit.ly/CRA-PWA
+
+const isLocalhost = Boolean(
+  window.location.hostname === 'localhost' ||
+    // [::1] is the IPv6 localhost address.
+    window.location.hostname === '[::1]' ||
+    // 127.0.0.0/8 are considered localhost for IPv4.
+    window.location.hostname.match(
+      /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
+    )
+);
+
+export function register(config) {
+  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
+    // The URL constructor is available in all browsers that support SW.
+    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
+    if (publicUrl.origin !== window.location.origin) {
+      // Our service worker won't work if PUBLIC_URL is on a different origin
+      // from what our page is served on. This might happen if a CDN is used to
+      // serve assets; see https://github.com/facebook/create-react-app/issues/2374
+      return;
+    }
+
+    window.addEventListener('load', () => {
+      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
+
+      if (isLocalhost) {
+        // This is running on localhost. Let's check if a service worker still exists or not.
+        checkValidServiceWorker(swUrl, config);
+
+        // Add some additional logging to localhost, pointing developers to the
+        // service worker/PWA documentation.
+        navigator.serviceWorker.ready.then(() => {
+          console.log(
+            'This web app is being served cache-first by a service ' +
+              'worker. To learn more, visit https://bit.ly/CRA-PWA'
+          );
+        });
+      } else {
+        // Is not localhost. Just register service worker
+        registerValidSW(swUrl, config);
+      }
+    });
+  }
+}
+
+function registerValidSW(swUrl, config) {
+  navigator.serviceWorker
+    .register(swUrl)
+    .then(registration => {
+      registration.onupdatefound = () => {
+        const installingWorker = registration.installing;
+        if (installingWorker == null) {
+          return;
+        }
+        installingWorker.onstatechange = () => {
+          if (installingWorker.state === 'installed') {
+            if (navigator.serviceWorker.controller) {
+              // At this point, the updated precached content has been fetched,
+              // but the previous service worker will still serve the older
+              // content until all client tabs are closed.
+              console.log(
+                'New content is available and will be used when all ' +
+                  'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
+              );
+
+              // Execute callback
+              if (config && config.onUpdate) {
+                config.onUpdate(registration);
+              }
+            } else {
+              // At this point, everything has been precached.
+              // It's the perfect time to display a
+              // "Content is cached for offline use." message.
+              console.log('Content is cached for offline use.');
+
+              // Execute callback
+              if (config && config.onSuccess) {
+                config.onSuccess(registration);
+              }
+            }
+          }
+        };
+      };
+    })
+    .catch(error => {
+      console.error('Error during service worker registration:', error);
+    });
+}
+
+function checkValidServiceWorker(swUrl, config) {
+  // Check if the service worker can be found. If it can't reload the page.
+  fetch(swUrl, {
+    headers: { 'Service-Worker': 'script' },
+  })
+    .then(response => {
+      // Ensure service worker exists, and that we really are getting a JS file.
+      const contentType = response.headers.get('content-type');
+      if (
+        response.status === 404 ||
+        (contentType != null && contentType.indexOf('javascript') === -1)
+      ) {
+        // No service worker found. Probably a different app. Reload the page.
+        navigator.serviceWorker.ready.then(registration => {
+          registration.unregister().then(() => {
+            window.location.reload();
+          });
+        });
+      } else {
+        // Service worker found. Proceed as normal.
+        registerValidSW(swUrl, config);
+      }
+    })
+    .catch(() => {
+      console.log(
+        'No internet connection found. App is running in offline mode.'
+      );
+    });
+}
+
+export function unregister() {
+  if ('serviceWorker' in navigator) {
+    navigator.serviceWorker.ready
+      .then(registration => {
+        registration.unregister();
+      })
+      .catch(error => {
+        console.error(error.message);
+      });
+  }
+}

server/routes/notices.js

@@ -14,7 +14,29 @@ router.get('/', function (req, res, next) {
       next(err);
     });
   // res.status(404).json({error:"없음."})
-  res.status(201).json(notices);
+  // res.status(201).json(notices);
+});
+
+router.get('/:id', function (req, res, next) {
+  Notice.findOne({ _id: req.params.id }, function (err, notice) {
+      if (err) return res.status(500).json({ error: err });
+      res.status(201).json(notice);
+  })
+});
+
+router.delete('/:id', function (req, res, next) {
+  Notice.findOne({ _id: req.params.id }, function (err, notice) {
+      if (err) return res.status(500).json({ error: err });
+      notice.remove()
+          .then(() => {
+              console.log();
+              res.status(201).json();
+          })
+          .catch((err) => {
+              console.error(err);
+              next(err);
+          });
+  })
 });
 
 module.exports = router;
\ No newline at end of file

server/routes/users.js

@@ -44,10 +44,11 @@ router.get('/:_id', verifyToken, function (req, res, next) {
 
 router.get('/admin/:_id', function (req, res, next) {
   console.log('/admin get req.params', req.params)
-  User.findOne({ _id: req.params._id }, 'role', function (err, user) {
+  User.findOne({ _id: req.params._id }, function (err, user) {
     if (err) return res.status(500).json({ error: err });
-    if (user.role == 'admin') {
-      next();
+    if (user.role === 'admin') {
+      res.status(201).json(user);
+      // next();
     }
     else return res.status(404).json({ error: '권한이 없습니다.' })
   })

server/routes/writes.js

@@ -7,7 +7,7 @@ router.post('/', function (req, res, next) {
     console.log("writes req.body", req.body)
     const notice = new Notice({
         notice_title: req.body.title,
-    notice_author: "예진",
+        notice_author: req.body.name,
         notice_content: req.body.content
     });
     console.log(notice);
@@ -22,4 +22,25 @@ router.post('/', function (req, res, next) {
         });
 });
 
+router.put('/:id', function (req, res, next) {
+    console.log('/writes put req.params', req.params.id)
+    Notice.findOne({ _id: req.params.id }, function (err, notice) {
+        if (err) return res.status(500).json({ error: err });
+        if (req.body.title.indexOf("(수정)") === -1) {notice.notice_title = req.body.title + "  (수정)"}
+        else {notice.notice_title = req.body.title}
+        notice.post_date = new Date();
+        notice.notice_author = req.body.name;
+        notice.notice_content = req.body.content;
+        notice.save()
+            .then((result) => {
+                console.log(result);
+                res.status(201).json(result);
+            })
+            .catch((err) => {
+                console.error(err);
+                next(err);
+            });
+    });
+});
+
 module.exports = router;
\ No newline at end of file