feat: 전역 jackson 설정 추가

src/main/java/com/example/daobe/common/config/JacksonConfig.java

@@ -0,0 +1,23 @@
+package com.example.daobe.common.config;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class JacksonConfig {
+
+    @Bean
+    public ObjectMapper objectMapper() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new JavaTimeModule());
+        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        objectMapper.setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE);
+        return objectMapper;
+    }
+}