refactor: sonarLint 반영

Author: BGuga

tomcat/src/main/java/org/apache/coyote/http11/ResourceProvider.java

@@ -24,7 +24,7 @@ private Optional<URL> findFileURL(String resourcePath) {
             }
             return Optional.of(resourceURL);
         } catch (URISyntaxException e) {
-            throw new RuntimeException(e);
+            return Optional.empty();
         }
     }
 
@@ -37,7 +37,7 @@ public String resourceBodyOf(String resourcePath) {
             }
             throw new IllegalArgumentException("파일이 존재하지 않습니다.");
         } catch (IOException e) {
-            throw new RuntimeException(e);
+            return null;
         }
     }
 

tomcat/src/main/java/org/apache/coyote/http11/controller/Controller.java

@@ -5,5 +5,5 @@
 
 public interface Controller {
 
-    Response handle(Request request);
+    Response<Object> handle(Request request);
 }

tomcat/src/main/java/org/apache/coyote/http11/request/Cookies.java

@@ -6,23 +6,23 @@
 public class Cookies {
 
     private static final String SESSION_COOKIE = "JSESSIONID";
-    private Map<String, String> cookies;
+    private final Map<String, String> cookieValues;
 
-    public Cookies(Map<String, String> cookies) {
-        this.cookies = cookies;
+    public Cookies(Map<String, String> cookieValues) {
+        this.cookieValues = cookieValues;
     }
 
     public Optional<String> getCookieOf(String cookieName) {
-        if (!cookies.containsKey(cookieName)) {
+        if (!cookieValues.containsKey(cookieName)) {
             return Optional.empty();
         }
-        return Optional.of(cookies.get(cookieName));
+        return Optional.of(cookieValues.get(cookieName));
     }
 
     public Optional<String> getSessionCookie() {
-        if (!cookies.containsKey(SESSION_COOKIE)) {
+        if (!cookieValues.containsKey(SESSION_COOKIE)) {
             return Optional.empty();
         }
-        return Optional.of(cookies.get(SESSION_COOKIE));
+        return Optional.of(cookieValues.get(SESSION_COOKIE));
     }
 }