Complete Login/Register(without auth)

@@ -6,9 +6,11 @@ import "./static/fonts/font.css";
 import LandingPage from "./component/views/LandingPage/LandingPage";
 import LandingPage from "./component/views/LandingPage/LandingPage";
 
 
 function App () {
 function App () {
+  let isAuthorized = sessionStorage.getItem("isAuthorized"); // 
   return (
   return (
       <Router>
       <Router>
         <div>
         <div>
+        {!isAuthorized ? <Redirect to="/login" /> : <Redirect to="/" />}
           <Routes>
           <Routes>
               <Route exact path = "/" element={<LandingPage/>}/>
               <Route exact path = "/" element={<LandingPage/>}/>
               <Route exact path = "/login" element={<LoginPage/>}/>
               <Route exact path = "/login" element={<LoginPage/>}/>

 import React, {useState} from "react";
 import React, {useState} from "react";
 import "../style/LoginPage.scss";
 import "../style/LoginPage.scss";
+import Axios from 'axios'
 import { Icon, Input } from "semantic-ui-react"
 import { Icon, Input } from "semantic-ui-react"
 import { useNavigate } from "react-router-dom";
 import { useNavigate } from "react-router-dom";
 
 
@@ -19,7 +20,23 @@ function LoginPage(props) {
         event.preventDefault();
         event.preventDefault();
         console.log("ID", Id);
         console.log("ID", Id);
         console.log("Password", Password);
         console.log("Password", Password);
-    
+        Axios.post('/api/login',{
+            Id, 
+            Password,
+        })
+        .then((res)=>{
+            if(res.status === 200){
+                alert("성공적으로 로그인하였습니다.")
+                navigate('/main')
+            }
+        }).catch((error) => {
+            if(error.response.data === 'idError'){
+                alert("존재하지 않는 아이디입니다.")
+            }
+            else if(error.response.data === 'pwError'){
+                alert("잘못된 비밀번호입니다.")
+            }    
+        })
     };
     };
     const goToRegister = () => {
     const goToRegister = () => {
         navigate('/register');
         navigate('/register');

@@ -45,9 +45,9 @@ function RegisterPage(props) {
                 }
                 }
             }).catch((error) => {
             }).catch((error) => {
                 console.log(error.response)
                 console.log(error.response)
+                alert("중복된 아이디입니다.")
             })
             })
         }
         }
-       
     },[Id, Password, Personality, PasswordCheck])
     },[Id, Password, Personality, PasswordCheck])
     return (
     return (
         <div id="Register">
         <div id="Register">