[feat] #21 title 값을 포함하는 값 조회 쿼리

src/main/java/org/harang/server/repository/PostRepository.java

@@ -1,12 +1,16 @@
 package org.harang.server.repository;
 
+import java.util.List;
 import org.harang.server.domain.Post;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.harang.server.dto.type.ErrorMessage;
 import org.harang.server.exception.CustomException;
+import org.springframework.data.jpa.repository.Query;
 
 public interface PostRepository extends JpaRepository<Post, Long> {
     default Post findByIdOrThrow(Long id) {
         return findById(id).orElseThrow(() -> new CustomException(ErrorMessage.POST_NOT_FOUND));
     }
+
+    List<Post> findByTitleIsContaining(String title);
 }