feat #11: 멀티파트 메시지컨버터 추가

스웨거에서 이미지+json 동시에 요청보내기 위한 jackson 컨버터 추가

backEnd/src/main/java/com/quiz/ourClass/global/util/MultipartJackson2HttpMessageConverter.java

@@ -0,0 +1,33 @@
+package com.quiz.ourClass.global.util;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.lang.reflect.Type;
+import org.springframework.http.MediaType;
+import org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter;
+import org.springframework.stereotype.Component;
+
+@Component
+public class MultipartJackson2HttpMessageConverter extends AbstractJackson2HttpMessageConverter {
+
+    /**
+     * Converter for support http request with header Content-Type: multipart/form-data
+     */
+    public MultipartJackson2HttpMessageConverter(ObjectMapper objectMapper) {
+        super(objectMapper, MediaType.APPLICATION_OCTET_STREAM);
+    }
+
+    @Override
+    public boolean canWrite(Class<?> clazz, MediaType mediaType) {
+        return false;
+    }
+
+    @Override
+    public boolean canWrite(Type type, Class<?> clazz, MediaType mediaType) {
+        return false;
+    }
+
+    @Override
+    protected boolean canWrite(MediaType mediaType) {
+        return false;
+    }
+}