diff --git a/.github/workflows/server-app.yml b/.github/workflows/server-app.yml
index 0d89695..457d98f 100644
--- a/.github/workflows/server-app.yml
+++ b/.github/workflows/server-app.yml
@@ -29,8 +29,8 @@ jobs:
           java-version: "17"
 
       - name: Build with Gradle
-        run: ./gradlew build
+        run: ./gradlew bootJar
 
-      - name: Run tests
-        if: ${{ github.event.inputs.run_tests }}
-        run: ./gradlew test
+      #- name: Run tests
+      #  if: ${{ github.event.inputs.run_tests }}
+      #  run: ./gradlew test
diff --git a/.gitmodules b/.gitmodules
index 54d568b..ec50465 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "server/opensourcecobol4j"]
-	path = server/opensourcecobol4j
+	path = server/app/opensourcecobol4j
 	url = https://github.com/yutaro-sakamoto/opensourcecobol4j
diff --git a/server/app/.gitignore b/server/app/.gitignore
new file mode 100644
index 0000000..f0d5161
--- /dev/null
+++ b/server/app/.gitignore
@@ -0,0 +1,2 @@
+src/main/java/cobol4j/aws/web/sample*.java
+lib/
diff --git a/server/app/build.gradle.kts b/server/app/build.gradle.kts
index 6e88ed5..ed9398f 100644
--- a/server/app/build.gradle.kts
+++ b/server/app/build.gradle.kts
@@ -5,6 +5,17 @@
  * For more details on building Java & JVM projects, please refer to https://docs.gradle.org/8.2.1/userguide/building_java_projects.html in the Gradle documentation.
  */
 
+import java.io.ByteArrayOutputStream
+
+val compilerBinDir = "${project.projectDir}/compiler_bin"
+val libcobjJar = "${compilerBinDir}/lib/opensourcecobol4j/libcobj.jar"
+val cobj = "${compilerBinDir}/bin/cobj"
+val cobjApi = "${compilerBinDir}/bin/cobj-api"
+val javaDir = "${project.projectDir}/src/main/java/cobol4j/aws/web/"
+val libDir = "${project.projectDir}/lib"
+val libLibcobjJar = "${libDir}/libcobj.jar"
+val javaPackage = "cobol4j.aws.web"
+
 plugins {
     // Apply the application plugin to add support for building a CLI application in Java.
     application
@@ -18,11 +29,15 @@ repositories {
 
 dependencies {
     implementation(platform("org.springframework.boot:spring-boot-dependencies:3.3.4"))
-
-    implementation("org.springframework.boot:spring-boot-starter")
-    testImplementation("org.springframework.boot:spring-boot-starter-test") {
-        exclude(mapOf("group" to "org.junit.vintage", "module" to "junit-vintage-engine"))
+    implementation("org.springframework.boot:spring-boot-starter-web") {
+        exclude(group = "org.springframework.boot", module = "spring-boot-starter-logging")
     }
+    implementation(files("lib/libcobj.jar"))
+
+    //implementation("org.springframework.boot:spring-boot-starter")
+    //testImplementation("org.springframework.boot:spring-boot-starter-test") {
+    //    exclude(mapOf("group" to "org.junit.vintage", "module" to "junit-vintage-engine"))
+    //}
     // Use JUnit Jupiter for testing.
     testImplementation("org.junit.jupiter:junit-jupiter:5.9.2")
 
@@ -48,3 +63,106 @@ tasks.named<Test>("test") {
     // Use JUnit Platform for unit tests.
     useJUnitPlatform()
 }
+
+// Git管理下にあるファイルを取得する関数
+fun getGitManagedFiles(dir: File): FileTree {
+    val output = ByteArrayOutputStream()
+    project.exec {
+        workingDir = dir
+        commandLine("git", "ls-files", "-z")
+        standardOutput = output
+    }
+    val gitFiles = output.toString().split("\u0000")
+    return fileTree(dir) {
+        include(gitFiles)
+    }
+}
+
+// opensource COBOL 4J のビルドタスクを追加
+tasks.register<Exec>("buildCompiler") {
+    group = "build"
+    description = "Build opensource COBOL 4J"
+
+    // 作業ディレクトリを指定
+    val opensourcecobol4jDir = file("${project.projectDir}/opensourcecobol4j/")
+
+    workingDir = opensourcecobol4jDir
+
+    // 入力ファイルを指定
+    inputs.files(getGitManagedFiles(opensourcecobol4jDir))
+
+    // 出力ファイルを指定
+    outputs.files(
+        file(libcobjJar),
+        file(cobj),
+        file(cobjApi),
+    )
+
+    // 実行コマンドを指定
+    commandLine("sh", "-c", """
+        mkdir -p ${compilerBinDir} &&
+        ./configure --prefix=${compilerBinDir} &&
+        make &&
+        make install
+    """.trimIndent())
+}
+
+tasks.register<Exec>("moveLibcobjJar") {
+    dependsOn("buildCompiler")
+
+    group = "build"
+    description = "Move libcobj.jar to lib directory"
+
+    // 入力ファイルを指定
+    inputs.files(file(libcobjJar))
+
+    // 出力ファイルを指定
+    outputs.files(file(libLibcobjJar))
+
+    // 実行コマンドを指定
+    commandLine("sh", "-c", """
+        mkdir -p ${libDir} &&
+        cp ${libcobjJar} ${libLibcobjJar}
+    """.trimIndent())
+}
+
+tasks.register<Exec>("buildCobol") {
+    dependsOn("buildCompiler")
+
+    group = "build"
+    description = "Build COBOL source files"
+
+    val cobolDir = "${project.projectDir}/cobol/"
+    val jsonDir = "${project.projectDir}/json"
+
+    // 作業ディレクトリを指定
+    workingDir = file(cobolDir)
+
+    // 入力ファイルと出力ファイルを指定
+    inputs.files(
+        file(libcobjJar),
+        file(cobj),
+        file(cobjApi),
+        fileTree(cobolDir),
+    )
+
+    // 出力ファイルを指定
+    outputs.files(
+        file("${javaDir}/sample.java"),
+        file("${javaDir}/sampleController.java"),
+        file("${javaDir}/sampleRecord.java"),
+        file("${jsonDir}/info_sample.json"),
+    )
+
+    commandLine("sh", "-c", """
+        mkdir -p ${jsonDir} &&
+        ${cobj} -info-json-dir=${jsonDir} -C -java-package=${javaPackage} *.cbl &&
+        mv *.java ${javaDir} &&
+        CLASSPATH=:${libcobjJar} ${cobjApi} --output-dir=${javaDir} -java-package=${javaPackage} ${jsonDir}/info_sample.json
+    """)
+}
+
+tasks.named("compileJava") {
+    dependsOn("buildCobol")
+    dependsOn("moveLibcobjJar")
+}
diff --git a/server/cobol/sample.cbl b/server/app/cobol/sample.cbl
similarity index 100%
rename from server/cobol/sample.cbl
rename to server/app/cobol/sample.cbl
diff --git a/server/app/opensourcecobol4j b/server/app/opensourcecobol4j
new file mode 160000
index 0000000..e1dfe8b
--- /dev/null
+++ b/server/app/opensourcecobol4j
@@ -0,0 +1 @@
+Subproject commit e1dfe8b10bf693dfc1e4437e05e2f0df40789f5c
diff --git a/server/app/src/main/java/cobol4j/aws/web/App.java b/server/app/src/main/java/cobol4j/aws/web/App.java
index d3653e5..cc2f13b 100644
--- a/server/app/src/main/java/cobol4j/aws/web/App.java
+++ b/server/app/src/main/java/cobol4j/aws/web/App.java
@@ -3,12 +3,12 @@
  */
 package cobol4j.aws.web;
 
-public class App {
-    public String getGreeting() {
-        return "Hello World!";
-    }
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+@SpringBootApplication
+public class App {
     public static void main(String[] args) {
-        System.out.println(new App().getGreeting());
+        SpringApplication.run(App.class, args);
     }
 }
diff --git a/server/build.gradle.kts b/server/build.gradle.kts
deleted file mode 100644
index 317a55d..0000000
--- a/server/build.gradle.kts
+++ /dev/null
@@ -1,93 +0,0 @@
-import java.io.ByteArrayOutputStream
-
-// Git管理下にあるファイルを取得する関数
-fun getGitManagedFiles(dir: File): FileTree {
-    val output = ByteArrayOutputStream()
-    project.exec {
-        workingDir = dir
-        commandLine("git", "ls-files", "-z")
-        standardOutput = output
-    }
-    val gitFiles = output.toString().split("\u0000")
-    return fileTree(dir) {
-        include(gitFiles)
-    }
-}
-
-val compilerBinDir = "${project.projectDir}/compiler_bin"
-val libcobjJar = "${compilerBinDir}/lib/opensourcecobol4j/libcobj.jar"
-val cobj = "${compilerBinDir}/bin/cobj"
-val cobjApi = "${compilerBinDir}/bin/cobj-api"
-
-// opensource COBOL 4J のビルドタスクを追加
-tasks.register<Exec>("buildCompiler") {
-    group = "build"
-    description = "Build opensource COBOL 4J"
-
-    // 作業ディレクトリを指定
-    val opensourcecobol4jDir = file("${project.projectDir}/opensourcecobol4j/")
-
-    workingDir = opensourcecobol4jDir
-
-    // 入力ファイルを指定
-    inputs.files(getGitManagedFiles(opensourcecobol4jDir))
-
-    // 出力ファイルを指定
-    outputs.files(
-        file(libcobjJar),
-        file(cobj),
-        file(cobjApi),
-    )
-
-    // 実行コマンドを指定
-    commandLine("sh", "-c", """
-        mkdir -p ${compilerBinDir} &&
-        ./configure --prefix=${compilerBinDir} &&
-        make &&
-        make install
-    """.trimIndent())
-}
-
-tasks.register<Exec>("buildCobol") {
-    dependsOn("buildCompiler")
-
-    group = "build"
-    description = "Build COBOL source files"
-
-    val cobolDir = "${project.projectDir}/cobol/"
-    val javaDir = "${project.projectDir}/app/src/main/java/cobol4j/aws/web/"
-    val jsonDir = "${project.projectDir}/json"
-
-    // 作業ディレクトリを指定
-    workingDir = file(cobolDir)
-
-    // 入力ファイルと出力ファイルを指定
-    inputs.files(
-        file(libcobjJar),
-        file(cobj),
-        file(cobjApi),
-        fileTree(cobolDir),
-    )
-
-    // 出力ファイルを指定
-    outputs.files(
-        file("${javaDir}/sample.java"),
-        file("${javaDir}/sampleController.java"),
-        file("${javaDir}/sampleRecord.java"),
-        file("${jsonDir}/info_sample.json"),
-    )
-
-    commandLine("sh", "-c", """
-        mkdir -p ${jsonDir} &&
-        ${cobj} -info-json-dir=${jsonDir} -C *.cbl &&
-        mv *.java ${javaDir} &&
-        CLASSPATH=:${libcobjJar} ${cobjApi} --output-dir=${javaDir} ${jsonDir}/info_sample.json
-    """)
-}
-
-// buildタスクを明示的に定義
-tasks.register("build") {
-    group = "build"
-    description = "Builds the project"
-    dependsOn("buildCobol")
-}
\ No newline at end of file
diff --git a/server/opensourcecobol4j b/server/opensourcecobol4j
deleted file mode 160000
index 3dcaa5c..0000000
--- a/server/opensourcecobol4j
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3dcaa5c3349cef838dc65ab6e967401befc18ce3
diff --git a/server/settings.gradle.kts b/server/settings.gradle.kts
index e29c86c..5f6200c 100644
--- a/server/settings.gradle.kts
+++ b/server/settings.gradle.kts
@@ -11,4 +11,4 @@ plugins {
 }
 
 rootProject.name = "cobol4j-aws-web"
-//include("app")
+include("app")