fixes

src/main/java/site/easystartup/web/controller/MainController.java

@@ -0,0 +1,12 @@
+package site.easystartup.web.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class MainController {
+    @GetMapping("/")
+    public String main() {
+        return "/main";
+    }
+}

src/main/java/site/easystartup/web/security/JWTFilter.java

@@ -5,6 +5,7 @@ import lombok.RequiredArgsConstructor;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.stereotype.Component;
 import org.springframework.util.StringUtils;
 import org.springframework.web.filter.OncePerRequestFilter;
@@ -36,6 +37,7 @@ public class JWTFilter extends OncePerRequestFilter {
             } else {
                 try {
                     String email = jwtUtil.validateTokenAndRetrieveClaim(jwt);
+
                     UserDetails userDetails = userDetailService.loadUserByUsername(email);
 
                     UsernamePasswordAuthenticationToken authenticationToken =

src/main/java/site/easystartup/web/security/SecurityConfig.java

@@ -41,9 +41,8 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
                 .and()
                 .authorizeRequests()
                 .antMatchers(SecurityConstants.SIGN_UP_URLS).permitAll()
-                .antMatchers("/auth/*").anonymous()
-                .antMatchers("/").permitAll()
-                .anyRequest().authenticated();
+                .anyRequest().authenticated().and()
+                .antMatcher("/auth/*").anonymous();
         http.addFilterBefore(jwtFilter, UsernamePasswordAuthenticationFilter.class);
 
     }

src/main/java/site/easystartup/web/service/AuthService.java

@@ -1,6 +1,7 @@
 package site.easystartup.web.service;
 
 import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 import site.easystartup.web.domain.exception.UserExistException;
@@ -20,10 +21,15 @@ public class AuthService {
     private final PasswordEncoder passwordEncoder;
 
     public User createUser(SignupRequest signupRequest) {
-        if (userRepo.findUserByUsername(signupRequest.getUsername()).isPresent()) {
-            throw new UserExistException("An account with this username already exists.");
-        }
+        boolean exists = false;
+        try {
+            if (userRepo.findUserByUsername(signupRequest.getUsername()).isPresent()) {
+                exists = true;
+            }
+        } catch (UsernameNotFoundException e) {}
 
+
+        if(exists) throw new UserExistException("An account with this username already exists.");
         User user = new User();
         user.setEmail(signupRequest.getEmail());
         user.setUsername(signupRequest.getUsername());

src/main/java/site/easystartup/web/storage/service/FileLocalStorageService.java

@@ -1,11 +1,14 @@
 package site.easystartup.web.storage.service;
 
 import lombok.SneakyThrows;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.FileSystemResource;
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.UrlResource;
 import org.springframework.util.FileSystemUtils;
 import org.springframework.web.multipart.MultipartFile;
 
+import javax.servlet.ServletContext;
 import java.io.IOException;
 import java.net.MalformedURLException;
 import java.nio.file.Files;
@@ -14,7 +17,10 @@ import java.nio.file.Paths;
 import java.util.stream.Stream;
 
 public class FileLocalStorageService implements StorageService {
-    private final Path root = Paths.get("uploads");
+    @Autowired
+    ServletContext context;
+
+    private final Path root = Path.of(new FileSystemResource("").getFile().getAbsolutePath());
 
     public FileLocalStorageService() {
         init();