fix: 한글 메시지 오류에 대한 KafkaProducerConfig부분 StringDeserializer로 추가 수정

src/main/java/com/dku/council/global/config/kafka/KafkaProducerConfig.java

@@ -1,6 +1,5 @@
 package com.dku.council.global.config.kafka;
 
-import com.dku.council.domain.chat.model.dto.response.ResponseChatDto;
 import lombok.RequiredArgsConstructor;
 import org.apache.kafka.clients.producer.ProducerConfig;
 import org.apache.kafka.common.serialization.StringSerializer;
@@ -11,7 +10,6 @@
 import org.springframework.kafka.core.DefaultKafkaProducerFactory;
 import org.springframework.kafka.core.KafkaTemplate;
 import org.springframework.kafka.core.ProducerFactory;
-import org.springframework.kafka.support.serializer.JsonSerializer;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -25,12 +23,12 @@ public class KafkaProducerConfig {
     private String bootstrapServers;
 
     @Bean
-    public KafkaTemplate<String, ResponseChatDto> kafkaTemplate() {
+    public KafkaTemplate<String, String> kafkaTemplate() {
         return new KafkaTemplate<>(producerFactory());
     }
 
     @Bean
-    public ProducerFactory<String, ResponseChatDto> producerFactory() {
+    public ProducerFactory<String, String> producerFactory() {
         return new DefaultKafkaProducerFactory<>(producerConfig());
     }
 
@@ -39,7 +37,7 @@ public Map<String, Object> producerConfig() {
         Map<String, Object> props = new HashMap<>();
         props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
         props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
-        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class);
+        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
         return props;
     }
 }