bugfix : exception process

Author: kimyonghwa

src/main/java/com/rest/api/config/security/CustomAccessDeniedHandler.java

@@ -22,7 +22,6 @@ public class CustomAccessDeniedHandler implements AccessDeniedHandler {
 	@Override
 	public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException exception) throws IOException,
             ServletException {
-		RequestDispatcher dispatcher = request.getRequestDispatcher("/exception/accessdenied");
-		dispatcher.forward(request, response);
+		response.sendRedirect("/exception/accessdenied");
 	}
 }

src/main/java/com/rest/api/config/security/CustomAuthenticationEntryPoint.java

@@ -18,7 +18,6 @@ public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint
     @Override
     public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException ex) throws IOException,
             ServletException {
-        RequestDispatcher dispatcher = request.getRequestDispatcher("/exception/entrypoint");
-        dispatcher.forward(request, response);
+        response.sendRedirect("/exception/entrypoint");
     }
 }

src/main/java/com/rest/api/config/security/SecurityConfiguration.java

@@ -32,7 +32,7 @@ protected void configure(HttpSecurity http) throws Exception {
             .and()
                 .authorizeRequests() // 다음 리퀘스트에 대한 사용권한 체크
                     .antMatchers("/*/signin", "/*/signup").permitAll() // 가입 및 인증 주소는 누구나 접���가능
-                    .antMatchers(HttpMethod.GET, "/helloworld/**").permitAll() // hellowworld로 시작하는 GET요청 리소스는 누구나 접근가능
+                    .antMatchers(HttpMethod.GET, "/exception/**","/helloworld/**").permitAll() // hellowworld로 시작하는 GET요청 리소스는 누구나 접근가능
                 .antMatchers("/*/users").hasRole("ADMIN")
                 .anyRequest().hasRole("USER") // 그외 나머지 요청은 모두 인증된 회원만 접근 가능
             .and()