init

.gitattributes

@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary

.gitignore

@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

build.gradle

@@ -0,0 +1,66 @@
+plugins {
+    id 'java'
+    id 'org.springframework.boot' version '3.5.4'
+    id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'com.mjon'
+version = '0.0.1-SNAPSHOT'
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+
+    maven { url "https://repo.spring.io/milestone" }
+    maven { url "https://repo.spring.io/snapshot" }
+}
+
+ext {
+    set('springAiVersion', "1.0.0")
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
+    implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+    implementation 'org.springframework.boot:spring-boot-starter-hateoas'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation("org.springframework.boot:spring-boot-starter-web") {
+        exclude group: "org.springframework.boot", module: "spring-boot-starter-webflux"
+    }
+    implementation 'org.springframework.ai:spring-ai-advisors-vector-store'
+    implementation 'org.springframework.ai:spring-ai-pdf-document-reader'
+    implementation 'org.springframework.ai:spring-ai-starter-model-chat-memory'
+    implementation 'org.springframework.ai:spring-ai-starter-model-ollama'
+    implementation 'org.springframework.ai:spring-ai-starter-vector-store-pgvector'
+    implementation 'org.springframework.session:spring-session-data-redis'
+    compileOnly 'org.projectlombok:lombok'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
+    implementation 'org.apache.poi:poi-ooxml:5.3.0'
+
+    // POI core
+    implementation 'org.apache.poi:poi:5.3.0'
+    // XLSX 지원
+    implementation 'org.apache.poi:poi-ooxml:5.3.0'
+
+}
+
+dependencyManagement {
+    imports {
+        mavenBom "org.springframework.ai:spring-ai-bom:${springAiVersion}"
+    }
+}
+

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 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 "$JAVACMD" "$@"

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

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'chatbot'

src/main/java/com/mjon/chatbot/ChatbotApplication.java

@@ -0,0 +1,15 @@
+package com.mjon.chatbot;
+
+import org.springframework.ai.vectorstore.pgvector.autoconfigure.PgVectorStoreAutoConfiguration;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+
+@SpringBootApplication
+public class ChatbotApplication {
+
+    public static void main( String[] args ) {
+        SpringApplication.run(ChatbotApplication.class, args);
+    }
+
+}

src/main/java/com/mjon/chatbot/chat/ChatController.java

@@ -0,0 +1,35 @@
+package com.mjon.chatbot.chat;
+
+import com.mjon.chatbot.chat.service.ChatService;
+import jakarta.annotation.Resource;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ChatController {
+
+    @Resource
+    private ChatService chatService;
+
+    @PostMapping("/chat/normal")
+    public ResponseEntity<String> normal( @RequestBody String question ) throws Exception {
+
+        return ResponseEntity.ok(chatService.chatNormal(question));
+    }
+
+    @PostMapping("/chat/excel")
+    public ResponseEntity<String> excel_2(@RequestBody String question) throws Exception {
+        return ResponseEntity.ok(chatService.chatExcelNormal(question));
+    }
+
+    @PostMapping("/chat/excel2")
+    public ResponseEntity<String> excel(@RequestBody String question) throws Exception {
+        return ResponseEntity.ok(chatService.chatExcel(question));
+    }
+}
+
+
+

src/main/java/com/mjon/chatbot/chat/config/ChatConfig.java

@@ -0,0 +1,16 @@
+package com.mjon.chatbot.chat.config;
+
+import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.ai.chat.memory.ChatMemory;
+import org.springframework.ai.ollama.OllamaChatModel;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ChatConfig {
+
+    @Bean
+    public ChatClient chatClient( OllamaChatModel ollamaChatModel) {
+        return ChatClient.create(ollamaChatModel);
+    }
+}

src/main/java/com/mjon/chatbot/chat/logConfig/SimpleLoggingFilter.java

@@ -0,0 +1,45 @@
+package com.mjon.chatbot.chat.logConfig;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+import org.springframework.web.util.ContentCachingRequestWrapper;
+import org.springframework.web.util.ContentCachingResponseWrapper;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+@Component
+public class SimpleLoggingFilter extends OncePerRequestFilter {
+
+    private static final Logger logger = LoggerFactory.getLogger(SimpleLoggingFilter.class);
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request,
+                                    HttpServletResponse response,
+                                    FilterChain filterChain)
+            throws ServletException, IOException {
+
+        // 요청/응답 Body 캐싱 Wrapper로 감싸기
+        ContentCachingRequestWrapper requestWrapper = new ContentCachingRequestWrapper(request);
+        ContentCachingResponseWrapper responseWrapper = new ContentCachingResponseWrapper(response);
+
+        filterChain.doFilter(requestWrapper, responseWrapper);
+
+        // 요청 Body 출력
+        String requestBody = new String(requestWrapper.getContentAsByteArray(), StandardCharsets.UTF_8);
+        logger.info("➡️ [{}] {} \n Body: \n {}", request.getMethod(), request.getRequestURI(), requestBody);
+
+        // 응답 Body 출력
+        String responseBody = new String(responseWrapper.getContentAsByteArray(), StandardCharsets.UTF_8);
+        logger.info("⬅️ 응답 상태: {} \n Body: \n {}", response.getStatus(), responseBody);
+
+        // Body가 소진되지 않도록 복사 후 반환
+        responseWrapper.copyBodyToResponse();
+    }
+}

src/main/java/com/mjon/chatbot/chat/service/ChatService.java

@@ -0,0 +1,8 @@
+package com.mjon.chatbot.chat.service;
+
+public interface ChatService {
+
+    String chatExcel(String question) throws Exception;
+    String chatNormal(String question) throws Exception;
+    String chatExcelNormal(String question) throws Exception;
+}

src/main/java/com/mjon/chatbot/chat/service/impl/ChatServiceImpl.java

@@ -0,0 +1,79 @@
+package com.mjon.chatbot.chat.service.impl;
+
+import com.mjon.chatbot.chat.service.ChatService;
+import jakarta.annotation.Resource;
+import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.ai.chat.client.advisor.vectorstore.QuestionAnswerAdvisor;
+import org.springframework.ai.document.Document;
+import org.springframework.ai.vectorstore.VectorStore;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.ai.chat.model.ChatResponse;
+
+import java.util.List;
+import java.util.Map;
+
+@Service("ChatService")
+public class ChatServiceImpl implements ChatService {
+
+    @Resource
+    private ChatClient chatClient;
+
+    @Resource
+    private VectorStore vectorStore;
+
+    @Override
+    public String chatExcel(String question) throws Exception {
+
+        // VectorStore에서 관련 문서 검색
+        List<Document> docs = vectorStore.similaritySearch(question);
+
+        // 검색된 문서 내용을 하나의 컨텍스트로 묶기
+        StringBuilder context = new StringBuilder();
+        StringBuilder sourceInfo = new StringBuilder("\n\n📂 **출처 정보**\n");
+
+        for (Document doc : docs) {
+            // 실제 문서 내용 가져오기
+            context.append(doc.getFormattedContent()).append("\n");
+
+            Map<String, Object> metadata = doc.getMetadata();
+            sourceInfo.append("- ")
+                    .append(metadata.getOrDefault("file_name", "unknown")).append(" / ")
+                    .append(metadata.getOrDefault("sheet_name", "unknown")).append(" / 행: ")
+                    .append(metadata.getOrDefault("row_index", "unknown")).append("\n");
+        }
+
+        // 3️⃣ ChatClient에 컨텍스트 주입하여 답변 생성
+        var chatResponse = chatClient.prompt()
+                .system("아래 주어진 엑셀 데이터 내용을 기반으로 질문에 답변해 주세요:\n" + context)
+                .user(question)
+                .call()
+                .chatResponse();
+
+        String answer = chatResponse.getResult().getOutput().getText();
+        return answer + sourceInfo.toString();
+    }
+
+    @Override
+    public String chatNormal(String question) throws Exception {
+        ChatResponse chatResponse = chatClient.prompt()
+                .user(question)
+                .call()
+                .chatResponse();
+
+        return chatResponse.getResult().getOutput().getText();
+    }
+
+    @Override
+    public String chatExcelNormal(String question) throws Exception {
+
+
+        ChatResponse chatResponse = chatClient.prompt()
+                .advisors(new QuestionAnswerAdvisor(vectorStore)) // VectorStore 검색
+                .user(question)
+                .call()
+                .chatResponse();
+
+        return chatResponse.getResult().getOutput().getText();
+    }
+}

src/main/java/com/mjon/chatbot/excel/ExcelController.java

@@ -0,0 +1,26 @@
+package com.mjon.chatbot.excel;
+
+import com.mjon.chatbot.excel.service.ExcelEmbeddingService;
+import jakarta.annotation.Resource;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.File;
+
+@RestController
+@RequestMapping("/excel")
+public class ExcelController {
+    @Resource
+    private ExcelEmbeddingService excelEmbeddingService;
+
+    @PostMapping("/upload")
+    public ResponseEntity<String> upload(@RequestParam MultipartFile file) throws Exception {
+        File tempFile = File.createTempFile("excel", ".xlsx");
+        file.transferTo(tempFile);
+
+        excelEmbeddingService.processExcel(tempFile);
+        return ResponseEntity.ok("엑셀 데이터를 행 단위로 벡터 저장 완료");
+    }
+}

src/main/java/com/mjon/chatbot/excel/service/ExcelEmbeddingService.java

@@ -0,0 +1,66 @@
+package com.mjon.chatbot.excel.service;
+
+import jakarta.annotation.Resource;
+import org.apache.poi.ss.usermodel.*;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+import org.springframework.ai.vectorstore.VectorStore;
+import org.springframework.ai.document.Document;
+import org.springframework.stereotype.Service;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.util.*;
+
+@Service
+public class ExcelEmbeddingService {
+    @Resource
+    private VectorStore vectorStore;
+//    private final VectorStore vectorStore;
+
+//    public ExcelEmbeddingService(VectorStore vectorStore) {
+//        this.vectorStore = vectorStore;
+//    }
+
+    // Excel 파일을 행 단위로 읽어서 VectorStore에 저장
+    public void processExcel(File excelFile) {
+        try (FileInputStream fis = new FileInputStream(excelFile);
+             Workbook workbook = new XSSFWorkbook(fis)) {
+
+            String fileName = excelFile.getName();
+            List<Document> documents = new ArrayList<>();
+
+            for (Sheet sheet : workbook) {
+                for (Row row : sheet) {
+                    StringBuilder rowText = new StringBuilder();
+                    for (Cell cell : row) {
+                        rowText.append(cell.toString()).append(" | ");
+                    }
+
+                    String text = rowText.toString().trim();
+                    if (text.isBlank()) {
+                        continue;  // 빈 행 건너뛰기
+                    }
+                    if (!text.isEmpty()) {
+                        // 메타데이터 추가 (출처 정보)
+                        Map<String, Object> metadata = new HashMap<>();
+                        metadata.put("file_name", fileName);
+                        metadata.put("sheet_name", sheet.getSheetName());
+                        metadata.put("row_index", row.getRowNum());
+
+
+                        // Document 객체 생성
+                        documents.add(new Document(text, metadata));
+                    }
+                }
+            }
+
+            // documents 리스트를 VectorStore에 추가 (자동 임베딩)
+            if (!documents.isEmpty()) {
+                vectorStore.add(documents);
+            }
+
+        } catch (Exception e) {
+            throw new RuntimeException("Excel 파싱/벡터 저장 실패", e);
+        }
+    }
+}

src/main/resources/application-local.yml

@@ -0,0 +1,35 @@
+spring:
+  application:
+    name: chatbot
+
+  config:
+    activate:
+      on-profile: local
+
+  data:
+    redis:
+      host: 192.168.0.60
+      port: 6379
+      password: itntest123
+
+  ai:
+    ollama:
+      base-url: http://192.168.0.31:11434
+      chat:
+        options:
+          model: gemma3:4b
+          temperature: 0.7
+      embedding:
+        options:
+          model: bge-m3
+    vectorstore:
+      pgvector:
+        table-name: documents
+        index-type: HNSW
+        distance-type: COSINE_DISTANCE
+        max-document-batch-size: 10000
+
+  datasource:
+    url: jdbc:postgresql://192.168.0.78:5432/docs
+    username: itn
+    password: itntest123

src/main/resources/application-prod.yml

@@ -0,0 +1,6 @@
+spring:
+  application:
+    name: chatbot
+  config:
+    activate:
+      on-profile: prod

src/main/resources/application.yml

@@ -0,0 +1,15 @@
+spring:
+  application:
+    name: chatbot
+  profiles:
+    default: local
+    predicate:
+      exclude:
+        - path: "/actuator/**"  # health check ?? (??)
+  logging:
+    level:
+      org.springframework.ai.chat.memory: DEBUG
+
+  autoconfigure:
+    exclude:
+      - org.springframework.ai.model.chat.memory.autoconfigure.ChatMemoryAutoConfiguration

src/test/java/com/mjon/chatbot/ChatbotApplicationTests.java

@@ -0,0 +1,13 @@
+package com.mjon.chatbot;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ChatbotApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}