diff --git a/.github/ISSUE_TEMPLATE/mission-issue.md b/.github/ISSUE_TEMPLATE/mission-issue.md
deleted file mode 100644
index 6808a15..0000000
--- a/.github/ISSUE_TEMPLATE/mission-issue.md
+++ /dev/null
@@ -1,40 +0,0 @@
----
-name: "미션 이슈"
-about: "주차별 작업 계획과 범위를 기록합니다."
-title: "[n주차] 이름/[type] 작업 내용"
-labels: ""
-assignees: ""
----
-
-## 1. 무엇을?
-
-
-
-
-## 2. 상세 설명
-
-
-
-
-## 3. 제출 전 체크 계획
-
-- [ ] 프로젝트가 정상 실행되는지 확인
-- [ ] `GET /health` 요청 정상 응답 확인
-- [ ] `POST /string/repeat` JSON 응답 요구사항 확인
-- [ ] Controller와 Service 분리 구조 확인
-
-## 4. 추가 사항
-
-
-
-## 5. 권장 추가 구현(선택)
-
-- [ ] 요청/응답 DTO 분리
-- [ ] 잘못된 요청에 대한 예외 처리
-- [ ] 응답 메시지 커스터마이징
-- [ ] 이해하기 쉬운 API 경로 설계
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 746e0ce..0000000
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,60 +0,0 @@
-
-
-## 1. 과제 요구사항 중 구현한 내용
-
-
-
-- [ ] 프로젝트 구조 구성 (Controller/Service 레이어 분리)
-- [ ] 헬스체크 API 구현 (`GET /health`)
-- [ ] 문자열 2개 반환 API 구현 (`POST /string/repeat`)
-- [ ] 권장 추가 구현 반영 (선택)
-
-
-## 2. 핵심 변경 사항
-
-
-
-
-## 3. 실행 및 검증 결과
-
-
-
-- 실행 결과:
-- `GET /health` 응답:
-- `POST /string/repeat` 요청/응답:
-
-
-## 4. 완료 사항
-
-
-
-1.
-2.
-3.
-
-
-## 5. 추가 사항
-
-- 관련 이슈: `closed #이슈번호`
-
-
-
-## 제출 체크리스트
-
-- [ ] PR 제목이 규칙에 맞다
-- [ ] base가 `{이름}/main` 브랜치다
-- [ ] compare가 `{이름}/{숫자}주차` 브랜치다
-- [ ] 프로젝트가 정상 실행된다
-- [ ] 본인을 Assignee로 지정했다
-- [ ] 파트 담당 Reviewer를 지정했다
-- [ ] 리뷰 피드백을 반영한 뒤 머지/PR close를 진행한다
-
-### Reviewer 참고
-
-
diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index b593b3e..0000000
--- a/.gitignore
+++ /dev/null
@@ -1,24 +0,0 @@
-.DS_Store
-
-# IDE
-.idea/
-.vscode/
-*.iml
-
-# Java/Gradle build outputs
-.gradle/
-build/
-out/
-
-# Maven build outputs
-target/
-
-# Logs
-*.log
-
-# Environment files
-.env
-.env.*
-
-# OS generated files
-Thumbs.db
diff --git a/.gradle/9.0.0/checksums/checksums.lock b/.gradle/9.0.0/checksums/checksums.lock
new file mode 100644
index 0000000..bd793df
Binary files /dev/null and b/.gradle/9.0.0/checksums/checksums.lock differ
diff --git a/.gradle/9.0.0/executionHistory/executionHistory.bin b/.gradle/9.0.0/executionHistory/executionHistory.bin
new file mode 100644
index 0000000..87202e4
Binary files /dev/null and b/.gradle/9.0.0/executionHistory/executionHistory.bin differ
diff --git a/.gradle/9.0.0/executionHistory/executionHistory.lock b/.gradle/9.0.0/executionHistory/executionHistory.lock
new file mode 100644
index 0000000..31047e7
Binary files /dev/null and b/.gradle/9.0.0/executionHistory/executionHistory.lock differ
diff --git a/.gradle/9.0.0/fileChanges/last-build.bin b/.gradle/9.0.0/fileChanges/last-build.bin
new file mode 100644
index 0000000..f76dd23
Binary files /dev/null and b/.gradle/9.0.0/fileChanges/last-build.bin differ
diff --git a/.gradle/9.0.0/fileHashes/fileHashes.bin b/.gradle/9.0.0/fileHashes/fileHashes.bin
new file mode 100644
index 0000000..fbfd354
Binary files /dev/null and b/.gradle/9.0.0/fileHashes/fileHashes.bin differ
diff --git a/.gradle/9.0.0/fileHashes/fileHashes.lock b/.gradle/9.0.0/fileHashes/fileHashes.lock
new file mode 100644
index 0000000..3ee4c34
Binary files /dev/null and b/.gradle/9.0.0/fileHashes/fileHashes.lock differ
diff --git a/.gradle/9.0.0/fileHashes/resourceHashesCache.bin b/.gradle/9.0.0/fileHashes/resourceHashesCache.bin
new file mode 100644
index 0000000..ed7f722
Binary files /dev/null and b/.gradle/9.0.0/fileHashes/resourceHashesCache.bin differ
diff --git a/.gradle/9.0.0/gc.properties b/.gradle/9.0.0/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/.gradle/buildOutputCleanup/buildOutputCleanup.lock
new file mode 100644
index 0000000..afbbba2
Binary files /dev/null and b/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/.gradle/buildOutputCleanup/cache.properties b/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 0000000..2999dcf
--- /dev/null
+++ b/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Tue Mar 24 18:04:07 KST 2026
+gradle.version=9.0.0
diff --git a/.gradle/buildOutputCleanup/outputFiles.bin b/.gradle/buildOutputCleanup/outputFiles.bin
new file mode 100644
index 0000000..8889a2a
Binary files /dev/null and b/.gradle/buildOutputCleanup/outputFiles.bin differ
diff --git a/.gradle/file-system.probe b/.gradle/file-system.probe
new file mode 100644
index 0000000..ffeb2d0
Binary files /dev/null and b/.gradle/file-system.probe differ
diff --git a/.gradle/vcs-1/gc.properties b/.gradle/vcs-1/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..9879198
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,10 @@
+# 디폴트 무시된 파일
+/shelf/
+/workspace.xml
+# 쿼리 파일을 포함한 무시된 디폴트 폴더
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# 에디터 기반 HTTP 클라이언트 요청
+/httpRequests/
diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..f984869
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+demo1
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..4f993f3
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,18 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..05eca02
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,17 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..03872dd
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/README.md b/README.md
deleted file mode 100644
index f6c3742..0000000
--- a/README.md
+++ /dev/null
@@ -1,58 +0,0 @@
-# 7th-BE-Blog
-
-7기 BE 블로그 프로젝트 레포지토리입니다.
-
-## ⚠️ 미션 요구사항
-
-미션 진행 방법을 꼭 읽고 진행해주세요!!
- - 과거 자료라서 레포지토리 이름이 다릅니다! 7th-BE-Blog로 이해하시면 됩니다
- - [미션 진행 방법](https://leets-7th-workspace.notion.site/327ca3362bee80acbd1be10724249c37)
- - [참고 레포지토리](https://github.com/Leets-Official/6th-BE-Blog) -> 전 기수 repo입니다. 브랜치, pr 작성법, 리뷰 방법 참고하세요!
-
-## 📌 1주차 목표
-- Spring Boot 프로젝트를 직접 생성하고 실행해본다.
-- Controller와 Service를 분리하여 서버 구조를 이해한다.
-- GET / POST 방식의 차이를 간단한 API를 통해 경험한다.
-- JSON 형태의 응답을 직접 만들어본다.
-
-### 과제 요구사항
-1. 프로젝트 구조 구성
- 아래 조건을 만족하도록 프로젝트를 구성합니다.
- - Controller 레이어와 Service 레이어를 분리합니다.
- - 각 레이어는 역할에 맞게 작성합니다.
- - 패키지 구조는 자유롭게 구성하되, 역할 구분이 드러나야 합니다.
-
-2. 헬스체크 API 구현
- 서버가 정상적으로 동작하는지 확인할 수 있는 헬스체크 API를 구현합니다.
- - `GET` Method를 사용합니다.
- - 서버가 정상 동작 중임을 확인할 수 있는 문자열을 반환합니다.
-
-3. 문자열 2개 반환 API 구현
- 문자열을 입력받으면, 같은 문자열을 2개 반환하는 API를 구현합니다.
- - `POST` Method를 사용합니다.
- - 요청으로 문자열을 전달받습니다.
- - 응답은 반드시 JSON 형식이어야 합니다.
- - 응답 JSON은 아래 구조를 따라야 합니다.
-
-### 제출 시 확인할 것
-- 프로젝트가 정상 실행되는가
-- `GET /health` 요청 시 정상 응답이 오는가
-- `POST /string/repeat` 요청 시 JSON 응답이 요구사항과 동일한가
-- Controller와 Service가 분리되어 있는가
-
-### 권장 추가 구현
-필수는 아니지만 아래 항목도 함께 해보면 좋습니다.
-
-- 요청/응답 DTO 분리하기
-- 잘못된 요청에 대한 예외 처리 고민해보기
-- 응답 메시지를 직접 변경해보기
-- API 경로를 본인이 이해하기 쉬운 구조로 설계해보기
-
-## 👥 팀 구성
-
-| 1조 | 2조 | 3조 | 4조 | 5조 |
-|-------|-------|-------|-------|-------|
-| 강예손 | 김지훈 | 이교형 | 김다인 | 송유경 |
-| 나명준 | 한하람 | 조연준 | 김동빈 | 임성현 |
-| 이건희 | 남유정 | 시재욱 | 임현성 | 정대교 |
-| 이은표 | 변승현 | 최유찬 | 이예서 | 강지훈 |
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..9adf091
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,43 @@
+plugins {
+ id 'java'
+ id 'org.springframework.boot' version '3.5.12'
+ id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+
+java {
+ toolchain {
+ languageVersion = JavaLanguageVersion.of(21)
+ }
+}
+
+configurations {
+ compileOnly {
+ extendsFrom annotationProcessor
+ }
+}
+
+repositories {
+ mavenCentral()
+}
+
+dependencies {
+ implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+ implementation 'org.springframework.boot:spring-boot-starter-web'
+ compileOnly 'org.projectlombok:lombok'
+ runtimeOnly 'com.mysql:mysql-connector-j'
+ annotationProcessor 'org.projectlombok:lombok'
+ testImplementation 'org.springframework.boot:spring-boot-starter-test'
+ testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+ runtimeOnly 'com.h2database:h2'
+}
+
+tasks.named('test') {
+ useJUnitPlatform()
+}
+
+springBoot {
+ mainClass = 'com.example.demo.DemoApplication'
+}
diff --git a/build/classes/java/main/com/example/demo1/Demo1Application.class b/build/classes/java/main/com/example/demo1/Demo1Application.class
new file mode 100644
index 0000000..70facd3
Binary files /dev/null and b/build/classes/java/main/com/example/demo1/Demo1Application.class differ
diff --git a/build/classes/java/main/com/example/demo1/controller/ApiController.class b/build/classes/java/main/com/example/demo1/controller/ApiController.class
new file mode 100644
index 0000000..522f3f2
Binary files /dev/null and b/build/classes/java/main/com/example/demo1/controller/ApiController.class differ
diff --git a/build/classes/java/main/com/example/demo1/dto/StringRequestDto.class b/build/classes/java/main/com/example/demo1/dto/StringRequestDto.class
new file mode 100644
index 0000000..471c833
Binary files /dev/null and b/build/classes/java/main/com/example/demo1/dto/StringRequestDto.class differ
diff --git a/build/classes/java/main/com/example/demo1/dto/StringResponseDto$StringResponseDtoBuilder.class b/build/classes/java/main/com/example/demo1/dto/StringResponseDto$StringResponseDtoBuilder.class
new file mode 100644
index 0000000..5a227b0
Binary files /dev/null and b/build/classes/java/main/com/example/demo1/dto/StringResponseDto$StringResponseDtoBuilder.class differ
diff --git a/build/classes/java/main/com/example/demo1/dto/StringResponseDto.class b/build/classes/java/main/com/example/demo1/dto/StringResponseDto.class
new file mode 100644
index 0000000..dd67c79
Binary files /dev/null and b/build/classes/java/main/com/example/demo1/dto/StringResponseDto.class differ
diff --git a/build/classes/java/main/com/example/demo1/service/ApiService.class b/build/classes/java/main/com/example/demo1/service/ApiService.class
new file mode 100644
index 0000000..8c3d5fe
Binary files /dev/null and b/build/classes/java/main/com/example/demo1/service/ApiService.class differ
diff --git a/build/tmp/compileJava/previous-compilation-data.bin b/build/tmp/compileJava/previous-compilation-data.bin
new file mode 100644
index 0000000..fb180e1
Binary files /dev/null and b/build/tmp/compileJava/previous-compilation-data.bin differ
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8bdaf60
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..2a84e18
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100644
index 0000000..ef07e01
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ if ! command -v java >/dev/null 2>&1
+ then
+ die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+ CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+# and any embedded shellness will be escaped.
+# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+# treated as '${Hostname}' itself on the command line.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -classpath "$CLASSPATH" \
+ -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+ "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+ die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..db3a6ac
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..45d9527
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'demo1'
diff --git a/src/main/java/com/example/demo/DemoApplication.java b/src/main/java/com/example/demo/DemoApplication.java
new file mode 100644
index 0000000..e910566
--- /dev/null
+++ b/src/main/java/com/example/demo/DemoApplication.java
@@ -0,0 +1,12 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+
+@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class}) // 이 부분 추가
+public class DemoApplication {
+ public static void main(String[] args) {
+ SpringApplication.run(DemoApplication.class, args);
+ }
+}
diff --git a/src/main/java/com/example/demo/controller/ApiController.java b/src/main/java/com/example/demo/controller/ApiController.java
new file mode 100644
index 0000000..5c8be93
--- /dev/null
+++ b/src/main/java/com/example/demo/controller/ApiController.java
@@ -0,0 +1,25 @@
+package com.example.demo.controller;
+
+import com.example.demo.dto.RepeatResponse;
+import com.example.demo.service.ApiService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+import java.util.Map;
+
+@RestController
+@RequiredArgsConstructor
+public class ApiController {
+ private final ApiService apiService;
+
+ @GetMapping("/health")
+ public String healthCheck() {
+ return "OK";
+ }
+
+ @PostMapping("/string/repeat")
+ public RepeatResponse repeatString(@RequestBody Map request) {
+ String input = request.get("value");
+ String processed = apiService.processString(input);
+ return new RepeatResponse(input, processed);
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/dto/RepeatResponse.java b/src/main/java/com/example/demo/dto/RepeatResponse.java
new file mode 100644
index 0000000..fa3fd35
--- /dev/null
+++ b/src/main/java/com/example/demo/dto/RepeatResponse.java
@@ -0,0 +1,11 @@
+package com.example.demo.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class RepeatResponse {
+ private String original;
+ private String repeated;
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/service/ApiService.java b/src/main/java/com/example/demo/service/ApiService.java
new file mode 100644
index 0000000..da63dba
--- /dev/null
+++ b/src/main/java/com/example/demo/service/ApiService.java
@@ -0,0 +1,10 @@
+package com.example.demo.service;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class ApiService {
+ public String processString(String input) {
+ return input + " " + input; // 문자열을 반복해주는 로직
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo1/Demo1Application.java b/src/main/java/com/example/demo1/Demo1Application.java
new file mode 100644
index 0000000..5ec0fc5
--- /dev/null
+++ b/src/main/java/com/example/demo1/Demo1Application.java
@@ -0,0 +1,12 @@
+package com.example.demo1;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+
+@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
+public class Demo1Application {
+ public static void main(String[] args) {
+ SpringApplication.run(Demo1Application.class, args);
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo1/controller/ApiController.java b/src/main/java/com/example/demo1/controller/ApiController.java
new file mode 100644
index 0000000..0d7b5ea
--- /dev/null
+++ b/src/main/java/com/example/demo1/controller/ApiController.java
@@ -0,0 +1,31 @@
+package com.example.demo1.controller;
+
+import com.example.demo1.dto.StringRequestDto;
+import com.example.demo1.dto.StringResponseDto;
+import com.example.demo1.service.ApiService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+//@RequestMapping("/api/v1")
+@RequiredArgsConstructor
+public class ApiController {
+
+ private final ApiService apiService;
+
+ @GetMapping("/health")
+ public ResponseEntity healthCheck() {
+ return ResponseEntity.ok(apiService.getHealthStatus());
+ }
+
+ @PostMapping("/string/repeat")
+ public ResponseEntity repeatString(@RequestBody StringRequestDto requestDto) {
+ return ResponseEntity.ok(apiService.repeatString(requestDto));
+ }
+
+ @ExceptionHandler(IllegalArgumentException.class)
+ public ResponseEntity handleRuntimeException(IllegalArgumentException e) {
+ return ResponseEntity.badRequest().body(e.getMessage());
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo1/dto/StringRequestDto.java b/src/main/java/com/example/demo1/dto/StringRequestDto.java
new file mode 100644
index 0000000..ceff83c
--- /dev/null
+++ b/src/main/java/com/example/demo1/dto/StringRequestDto.java
@@ -0,0 +1,10 @@
+package com.example.demo1.dto;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class StringRequestDto {
+ private String value;
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo1/dto/StringResponseDto.java b/src/main/java/com/example/demo1/dto/StringResponseDto.java
new file mode 100644
index 0000000..525625d
--- /dev/null
+++ b/src/main/java/com/example/demo1/dto/StringResponseDto.java
@@ -0,0 +1,11 @@
+package com.example.demo1.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+public class StringResponseDto {
+ private String string_one;
+ private String string_two;
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo1/service/ApiService.java b/src/main/java/com/example/demo1/service/ApiService.java
new file mode 100644
index 0000000..8eaac06
--- /dev/null
+++ b/src/main/java/com/example/demo1/service/ApiService.java
@@ -0,0 +1,26 @@
+package com.example.demo1.service;
+
+import com.example.demo1.dto.StringRequestDto;
+import com.example.demo1.dto.StringResponseDto;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ApiService {
+
+ public String getHealthStatus() {
+ return "ok";
+ }
+
+ public StringResponseDto repeatString(StringRequestDto requestDto) {
+ String original = requestDto.getValue();
+
+ if (original == null || original.isBlank()) {
+ throw new IllegalArgumentException("입력 값이 비어있습니다.");
+ }
+
+ return StringResponseDto.builder()
+ .string_one(original)
+ .string_two(original)
+ .build();
+ }
+}
\ No newline at end of file
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
new file mode 100644
index 0000000..2109a44
--- /dev/null
+++ b/src/main/resources/application.properties
@@ -0,0 +1 @@
+spring.application.name=demo
diff --git a/src/test/java/com/example/demo/DemoApplicationTests.java b/src/test/java/com/example/demo/DemoApplicationTests.java
new file mode 100644
index 0000000..2778a6a
--- /dev/null
+++ b/src/test/java/com/example/demo/DemoApplicationTests.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class DemoApplicationTests {
+
+ @Test
+ void contextLoads() {
+ }
+
+}