Prompt Title: 20240110

Created 3 months ago
Votes 0
Views 91 times
0
Human: <div class="">Currently there are common project and board project in gitlab. To build the board, you must reference common-0.0.1-SNAPSHOT.jar, built with CICD in common, as a dependent library on the board. Then how should I refer to the jar on the board? Please create a .gitlab-ci.yml file.</div>
ChatGPT:

To reference common-0.0.1-SNAPSHOT.jar, a dependent library built with CI/CD in the common project, in your board project on GitLab, you need to modify your .gitlab-ci.yml file in the board project. Here's how you can do it:

  1. Artifact Sharing: First, ensure that the common project's CI/CD pipeline publishes common-0.0.1-SNAPSHOT.jar as an artifact.

  2. Artifact Download: In the board project, you will need to add a step in the .gitlab-ci.yml file to download this artifact from the common project.

Here's an example of what your .gitlab-ci.yml file in the board project might look like:

yaml
stages: - build - test before_script: # Add necessary setup commands here build: stage: build script: - 'wget -O common-0.0.1-SNAPSHOT.jar "$CI_API_V4_URL/projects/:id/packages/common/0.0.1-SNAPSHOT/common-0.0.1-SNAPSHOT.jar?job=build" --header "PRIVATE-TOKEN: $CI_JOB_TOKEN"' - 'mvn install:install-file -Dfile=common-0.0.1-SNAPSHOT.jar -DgroupId=com.example -DartifactId=common -Dversion=0.0.1-SNAPSHOT -Dpackaging=jar' - 'mvn clean compile' # Your build commands test: stage: test script: - 'mvn test' # Your test commands

In this example, the wget command is used to download the artifact from the common project. Replace :id with the project ID of your common project. The mvn install:install-file command installs the downloaded JAR into your local Maven repository, which is then used in the build stage of your board project.

Note: Ensure that the CI_JOB_TOKEN and project ID are correctly configured for accessing artifacts across projects in GitLab. Also, adjust the groupId, artifactId, and version in the mvn install:install-file command according to your project's details.

Human: <div class="">I use gradle, not maven.</div>
ChatGPT:

In that case, to reference common-0.0.1-SNAPSHOT.jar from your common project in the board project using Gradle, you'll need to modify the .gitlab-ci.yml file in the board project to download the artifact and then configure Gradle to use this JAR. Here's how you can do it:

  1. Publishing Artifact in Common Project: Ensure that the common project's CI/CD pipeline is set up to publish common-0.0.1-SNAPSHOT.jar as an artifact.

  2. Downloading Artifact in Board Project: In the board project, add a step in the .gitlab-ci.yml file to download this artifact from the common project.

Here's an example .gitlab-ci.yml for your board project:

yaml
stages: - prepare - build - test prepare: stage: prepare script: - 'wget -O common-0.0.1-SNAPSHOT.jar "$CI_API_V4_URL/projects/:id/packages/common/0.0.1-SNAPSHOT/common-0.0.1-SNAPSHOT.jar?job=build" --header "PRIVATE-TOKEN: $CI_JOB_TOKEN"' - 'mkdir -p libs' - 'mv common-0.0.1-SNAPSHOT.jar libs/' build: stage: build script: - 'gradle assemble' test: stage: test script: - 'gradle check'

In your build.gradle (or build.gradle.kts if using Kotlin DSL), you need to add the local directory where the JAR is downloaded as a repository and then add the dependency:

groovy
repositories { mavenCentral() flatDir { dirs 'libs' } } dependencies { implementation name: 'common-0.0.1-SNAPSHOT' // ... other dependencies ... }

Replace :id with the project ID of your common project in the .gitlab-ci.yml. This setup will download the JAR from the common project into a libs directory and then use it as a dependency in your Gradle build.

Note: Ensure the CI_JOB_TOKEN and project ID are correctly set for accessing artifacts across projects in GitLab. Also, make sure your Gradle version and build scripts are compatible with this setup.

Human: <div class="">Or can I deploy and use the image built separately on the common side? (using Kubernetes kaniko)</div>
ChatGPT:

Yes, you can use Kubernetes and Kaniko to build and deploy a Docker image from your common project, and then use this image in your board project. This approach is particularly effective when your common project contains shared code or services that need to be accessed by other projects. Here's a high-level overview of how you can set this up:

Common Project:

  1. Building the Docker Image with Kaniko in CI/CD:

    • In the common project's .gitlab-ci.yml, set up a job to build a Docker image using Kaniko.
    • Push the built image to your Docker registry (e.g., GitLab Container Registry).

    Example .gitlab-ci.yml snippet for common project:

    yaml
    build_image: stage: build image: gcr.io/kaniko-project/executor:latest script: - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
  2. Dockerfile in Common Project:

    • Ensure you have a Dockerfile in your common project that properly packages your application or dependencies.

Board Project:

  1. Using the Docker Image in Kubernetes:

    • In your board project, configure Kubernetes deployment to use the image built by the common project.
    • You'll reference the image by its registry path in your Kubernetes deployment configuration.

    Example Kubernetes deployment configuration:

    yaml
    apiVersion: apps/v1 kind: Deployment metadata: name: board-deployment spec: replicas: 1 selector: matchLabels: app: board template: metadata: labels: app: board spec: containers: - name: board image: <your-registry>/<your-image>:<tag> ports: - containerPort: 80

    Replace <your-registry>/<your-image>:<tag> with the path to the Docker image in your registry.

  2. Integration in CI/CD:

    • In the board project's .gitlab-ci.yml, you may add steps to deploy or update your Kubernetes deployment when changes are pushed. This can be done using kubectl or GitLab's Kubernetes integration.

By using Docker and Kubernetes, you effectively decouple the build and deployment stages. The common project builds and provides the Docker image, which is then used by the board project in its own environment, ensuring consistency and ease of updates. Remember to manage your versions/tags properly to avoid compatibility issues.

Human: <div class="">You need to build CICD in the current board project. I created a test:latest image separately, and you need to build it by referencing the /jar/common.jar file of that image. So how should I create the .gitlab-ci.yml file?</div>
ChatGPT:

To set up CI/CD in your board project where you need to build by referencing the /jar/common.jar file from a test:latest Docker image, you will use a multi-stage process in your .gitlab-ci.yml. This process involves pulling the Docker image, extracting the necessary JAR file, and then using it in your build process.

Here's a step-by-step guide to creating your .gitlab-ci.yml file:

  1. Pull the Docker Image:

    • Use a job to pull the test:latest image.
    • Extract the common.jar from the image.
  2. Build Your Project:

    • Use the extracted common.jar in your build process.

Here's an example .gitlab-ci.yml file for your board project:

yaml
stages: - prepare - build - test variables: IMAGE_NAME: "test:latest" JAR_PATH: "/jar/common.jar" prepare: stage: prepare script: - docker pull $IMAGE_NAME - docker create --name temp_container $IMAGE_NAME - docker cp temp_container:$JAR_PATH ./common.jar - docker rm temp_container build: stage: build script: - echo "Build your project here using common.jar" # Example: Gradle or Maven build commands # - gradle build -Dcommon.jar.path=./common.jar # - mvn install:install-file -Dfile=./common.jar -DgroupId=your.group -DartifactId=your-artifact -Dversion=1.0 -Dpackaging=jar # - mvn package test: stage: test script: - echo "Run your tests here" # Example: Gradle or Maven test commands # - gradle test # - mvn test

Explanation:

  • Stages: Defined as prepare, build, and test.

  • Prepare Stage:

    • Pulls the test:latest image.
    • Creates a temporary container from the image.
    • Copies the common.jar from the container to the build environment.
    • Removes the temporary container.
  • Build Stage:

    • This is where you would include your build commands. Use the common.jar as a dependency in your build. The commands will depend on whether you're using Gradle, Maven, or another build tool.
  • Test Stage:

    • Run your test commands here.

Notes:

  • This example assumes that you have Docker available in your GitLab runner.
  • Modify the build and test scripts according to your project's specific requirements and build tool.
  • Ensure the path for common.jar inside the Docker image is correct.
Human: <div class="">&gt; Task :compileJava FAILED /home/ubuntu/board/src/main/java/msa/mhsoft/board/model/response/ResponseStudentDto.java:10: error: package msa.mhsoft.common.codes does not exist import msa.mhsoft.common.codes.Gender;</div>
ChatGPT:

The error message you're encountering, "error: package msa.mhsoft.common.codes does not exist", suggests that the Gender class from the package msa.mhsoft.common.codes is not being found during the compilation of your Java project. This issue is likely related to how dependencies are managed and imported in your project, particularly the dependency that should contain this package.

Since you're working with a JAR file (common.jar) from another project (as mentioned in your previous context), it's crucial to ensure that this JAR is correctly integrated into your build process. Here are a few steps to troubleshoot and resolve this issue:

  1. Verify JAR File Content:

    • Ensure that the common.jar file actually contains the msa.mhsoft.common.codes package and the Gender class.
    • You can inspect the contents of the JAR file using a tool like jar tf common.jar to list the files in the JAR.
  2. Correct Dependency Inclusion:

    • Verify that common.jar is correctly included as a dependency in your build configuration (whether it's Gradle, Maven, or another build system).
    • For Gradle, you might include it like this:
      gradle
      dependencies { implementation files('path/to/common.jar') // other dependencies }
    • For Maven, use the system scope with systemPath:
      xml
      <dependency> <groupId>your.group</groupId> <artifactId>your-artifact</artifactId> <version>1.0</version> <scope>system</scope> <systemPath>${project.basedir}/path/to/common.jar</systemPath> </dependency>
  3. Build Script in .gitlab-ci.yml:

    • Ensure that the .gitlab-ci.yml script correctly sets up the build environment, especially if the JAR file is being dynamically downloaded or copied as part of the CI/CD process.
  4. Classpath Issues:

    • Ensure that the classpath during the build includes common.jar. Classpath issues are a common cause of such errors.
  5. Local vs. CI/CD Environment:

    • If this error occurs only in the CI/CD pipeline but not locally, check for any discrepancies between the local and CI/CD environments, such as different versions of Java, build tools, or environment variables.

If you have already taken these steps and the issue persists, it could be helpful to provide more information about your build setup, such as the build system you're using (Gradle, Maven, etc.), the structure of your project, and how you're including the common.jar in your project.

Human: <div class="">plugins { id 'java' id 'org.springframework.boot' version '3.1.1' id 'io.spring.dependency-management' version '1.1.0' } group = 'msa.mhsoft.board' version = '0.0.4' java { sourceCompatibility = '17' } configurations { compileOnly { extendsFrom annotationProcessor } } repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-data-jpa' implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'com.googlecode.json-simple:json-simple:1.1.1' implementation 'org.mariadb.jdbc:mariadb-java-client:3.1.3' implementation 'io.jsonwebtoken:jjwt-api:0.11.5' implementation 'org.bgee.log4jdbc-log4j2:log4jdbc-log4j2-jdbc4.1:1.16' implementation 'net.coobird:thumbnailator:0.4.19' // 이미지 섬네일 만들기 implementation 'com.drewnoakes:metadata-extractor:2.18.0' // 이미지 메타데이터 일기 회전 정보 보정을 위해 implementation 'org.springframework.kafka:spring-kafka' // 3.0.6인듯 implementation 'com.google.firebase:firebase-admin:9.2.0' implementation files('/jar/common-0.0.1-SNAPSHOT.jar') runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.5' runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.11.5' compileOnly 'org.projectlombok:lombok' developmentOnly 'org.springframework.boot:spring-boot-devtools' annotationProcessor 'org.projectlombok:lombok' testImplementation 'org.springframework.boot:spring-boot-starter-test' // 자체 라이브러리 //implementation fileTree(dir: '/jar', includes: ['*.jar']) } tasks.named('test') { useJUnitPlatform() /home/ubuntu/board/src/main/java/msa/mhsoft/board/model/response/ResponseStudentDto.java:10: error: package msa.mhsoft.common.codes does not exist 오류가 발생합니다. import msa.mhsoft.common.codes.Gender;</div>
ChatGPT:

The issue you're facing with the msa.mhsoft.common.codes package not being found in your Spring Boot project using Gradle is likely due to how the external JAR (common-0.0.1-SNAPSHOT.jar) is being included in your project. Here are some steps to troubleshoot and fix this problem:

  1. Ensure the JAR Contains the Required Package:

    • First, confirm that common-0.0.1-SNAPSHOT.jar actually contains the msa.mhsoft.common.codes package and the Gender class. You can do this by inspecting the JAR file with a tool like jar:
      bash
      jar tf /path/to/common-0.0.1-SNAPSHOT.jar
      Look for the path msa/mhsoft/common/codes/Gender.class in the output.
  2. Correct Path to the JAR File:

    • In your build.gradle, you have:
      groovy
      implementation files('/jar/common-0.0.1-SNAPSHOT.jar')
      This path is absolute and assumes the JAR is located at the root of your filesystem in a folder named jar. Ensure this path is correct. If the JAR is located relative to your project, you might want to change it to a relative path, like:
      groovy
      implementation files('libs/common-0.0.1-SNAPSHOT.jar')
  3. Alternative Way to Include JAR:

    • If the above does not work, try using the fileTree method (which you've commented out) to include all JAR files in a specific directory:
      groovy
      implementation fileTree(dir: 'libs', includes: ['*.jar'])
      Make sure the libs directory (or whichever directory you choose) contains the common-0.0.1-SNAPSHOT.jar and is located relative to your project's root.
  4. Clean and Rebuild:

    • Sometimes, Gradle might not pick up changes in dependencies immediately. Try cleaning and rebuilding your project:
      bash
      ./gradlew clean build
  5. Check for Classpath Issues in Your IDE:

    • If you're using an IDE (like IntelliJ IDEA or Eclipse), ensure it's correctly configured to include the JAR in the classpath. Sometimes, IDEs require manual refreshing or re-importing of the Gradle project to recognize changes.
  6. CI/CD Specific Configuration:

    • If this error is specific to your CI/CD pipeline, ensure that the CI/CD environment has the correct setup to access the JAR file. This might involve copying the JAR to the correct location as part of the CI/CD script.

By following these steps, you should be able to resolve the issue with the missing package. If the problem persists, it might be helpful to share more details about your project structure or how the common.jar is being generated.

Human: <div class="">implementation fileTree(dir: 'libs', includes: ['*.jar']) If I set this up, where should I move the common jar file?</div>
ChatGPT:

If you configure your Gradle dependencies to include JAR files from a directory using implementation fileTree(dir: 'libs', includes: ['*.jar']), you need to place your common-0.0.1-SNAPSHOT.jar file inside a directory named libs at the root of your project.

Here's how you should organize it:

  1. Project Directory Structure:

    • Assume your project structure looks something like this:
      css
      your-project/ ├── src/ ├── build.gradle ├── settings.gradle └── ... other project files ...
  2. Create 'libs' Directory:

    • You should create a libs directory at the same level as your src directory and build.gradle file.
    • After creating the libs directory, your project structure will look like this:
      css
      your-project/ ├── src/ ├── libs/ ├── build.gradle ├── settings.gradle └── ... other project files ...
  3. Place the JAR File in 'libs' Directory:

    • Move or copy your common-0.0.1-SNAPSHOT.jar file into the libs directory.
    • Now, your project structure should be:
      css
      your-project/ ├── src/ ├── libs/ │ └── common-0.0.1-SNAPSHOT.jar ├── build.gradle ├── settings.gradle └── ... other project files ...
  4. Gradle Configuration:

    • Your build.gradle should include the dependency as follows:
      groovy
      dependencies { // ... other dependencies ... implementation fileTree(dir: 'libs', includes: ['*.jar']) }

By following these steps, Gradle will automatically include any JAR files located in the libs directory into your project's classpath, allowing your application to use classes and resources contained in common-0.0.1-SNAPSHOT.jar.

Remember to re-sync or reload your Gradle project after making these changes, especially if you're working within an IDE. This ensures that your IDE recognizes the new files and updates its internal classpath accordingly.

Human: <div class="">현재 저의 폴더 경로입니다. root@ubuntu:/home/ubuntu/board# ls build/ build.gradle gradle/ gradlew gradlew.bat jar/ libs/ settings.gradle src/ 아래는 build.gradle 내용입니다. plugins { id 'java' id 'org.springframework.boot' version '3.1.1' id 'io.spring.dependency-management' version '1.1.0' } group = 'msa.mhsoft.board' version = '0.0.4' java { sourceCompatibility = '17' } configurations { compileOnly { extendsFrom annotationProcessor } } repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-data-jpa' implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'com.googlecode.json-simple:json-simple:1.1.1' implementation 'org.mariadb.jdbc:mariadb-java-client:3.1.3' implementation 'io.jsonwebtoken:jjwt-api:0.11.5' implementation 'org.bgee.log4jdbc-log4j2:log4jdbc-log4j2-jdbc4.1:1.16' implementation 'net.coobird:thumbnailator:0.4.19' // 이미지 섬네일 만들기 implementation 'com.drewnoakes:metadata-extractor:2.18.0' // 이미지 메타데이터 일기 회전 정보 보정을 위해 implementation 'org.springframework.kafka:spring-kafka' // 3.0.6인듯 implementation 'com.google.firebase:firebase-admin:9.2.0' //implementation files('jar/common-0.0.1-SNAPSHOT.jar') runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.5' runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.11.5' compileOnly 'org.projectlombok:lombok' developmentOnly 'org.springframework.boot:spring-boot-devtools' annotationProcessor 'org.projectlombok:lombok' testImplementation 'org.springframework.boot:spring-boot-starter-test' // 자체 라이브러리 implementation fileTree(dir: 'libs', includes: ['*.jar']) } tasks.named('test') { useJUnitPlatform() }</div>
ChatGPT:

Based on the folder structure and build.gradle content you've provided, you're already set up to include JAR files from the libs directory in your project. Here's a quick overview to ensure everything is in place:

  1. Folder Structure: You have a libs directory in the root of your project, which is correct. Your current directory structure is:

    ruby
    root@ubuntu:/home/ubuntu/board# ├── build/ ├── build.gradle ├── gradle/ ├── gradlew ├── gradlew.bat ├── jar/ ├── libs/ ├── settings.gradle └── src/
  2. Placing the JAR File: Make sure that the common-0.0.1-SNAPSHOT.jar is located inside the libs directory. Your libs directory should contain:

    libs/ └── common-0.0.1-SNAPSHOT.jar
  3. Gradle Dependency Configuration: In your build.gradle, you have the following dependency configuration:

    groovy
    dependencies { // ... other dependencies ... implementation fileTree(dir: 'libs', includes: ['*.jar']) }

    This configuration correctly tells Gradle to include all JAR files in the libs directory as dependencies.

  4. Building the Project:

    • Run the build process with Gradle. If you're using the command line, navigate to the root of your project (/home/ubuntu/board) and run:
      bash
      ./gradlew build
    • This command will compile your project, including the JAR files from the libs directory.
  5. Check for Compile Errors:

    • If there are any compile errors related to missing classes or packages from common-0.0.1-SNAPSHOT.jar, double-check that the JAR file is correctly placed in the libs directory and that it contains the necessary classes.
  6. IDE Integration:

    • If you're using an IDE (like IntelliJ IDEA or Eclipse), make sure to refresh or re-import the Gradle project so that the IDE recognizes the changes in your build configuration.

By following these steps, your Gradle project should correctly include the common-0.0.1-SNAPSHOT.jar from the libs directory and resolve any classes or packages defined in that JAR.

Human: <div class="">Please tell me the command to export gradle</div>
ChatGPT:

If you want to export your Gradle project along with its dependencies, you're likely looking to create a distributable artifact such as a JAR or WAR file. Gradle provides built-in tasks for this purpose, depending on what you want to achieve. Here are some common Gradle commands for exporting different types of artifacts:

  1. Building a JAR (Java Archive) File:

    • If your project is a standard Java application, you can use the jar task to create a JAR file.
    • Run the following command in your project's root directory:
      bash
      ./gradlew jar
    • This will generate a JAR file in the build/libs directory.
  2. Building a WAR (Web Application Archive) File:

    • If your project is a web application, and you are using the war plugin, you can create a WAR file using:
      bash
      ./gradlew war
    • The WAR file will be generated in the build/libs directory.
  3. Creating a Fat/Uber JAR:

    • If you need to package all your dependencies into a single JAR (often called a fat JAR or uber JAR), you will need to use a plugin like Shadow or configure the JAR task accordingly.
    • First, apply the Shadow plugin by adding this to your build.gradle:
      groovy
      plugins { id 'com.github.johnrengelman.shadow' version '7.1.0' }
    • Then, run the following command to create the fat JAR:
      bash
      ./gradlew shadowJar
    • The fat JAR will be located in the build/libs directory.
  4. Exporting All Dependencies:

    • If you want to export all the dependencies of your project (not packaged into a JAR), you can use a custom task. Add the following to your build.gradle:
      groovy
      task copyDependencies(type: Copy) { from configurations.runtimeClasspath into "${buildDir}/libs" }
    • Run the task with:
      bash
      ./gradlew copyDependencies
    • This will copy all runtime dependencies into the build/libs directory.

Remember to run these commands in the root directory of your Gradle project, where your build.gradle file is located. Depending on your specific project configuration and requirements, you might need to adjust these commands or build script configurations.

Human: <div class="">Currently, in spring, the board project is being built by exporting the common project. I would like to use this in a Linux environment. How do I use it?</div>
ChatGPT:

To use a Spring Boot application (like your board project) that depends on another project (like your common project) in a Linux environment, you typically need to follow these steps:

  1. Build the Projects:

    • First, ensure both your common project and board project are built successfully. If common is a library used by board, it should be compiled and packaged (usually as a JAR file).
    • In your board project, create an executable JAR (often called a fat JAR or uber JAR) that contains all the necessary dependencies, including your common project.
  2. Transfer the Executable JAR:

    • Once you have the executable JAR for your board project, transfer this JAR file to your Linux environment. This can be done using various methods like scp (secure copy over SSH), FTP, or even manually if it's a local environment.
  3. Java Runtime Environment (JRE):

    • Ensure that the Linux environment has Java installed, specifically a version compatible with your Spring Boot application. You can check this by running java -version in the Linux terminal.
  4. Running the Application:

    • To run your Spring Boot application, use the Java command to execute the JAR file. Open a terminal in the directory where the JAR file is located and run:
      bash
      java -jar board-project.jar
      Replace board-project.jar with the name of your actual JAR file.
  5. Optional: Using a Script for Execution:

    • For convenience, especially if you need to pass multiple configuration options, create a shell script (run.sh, for example) to execute your application:
      bash
      #!/bin/bash java -jar board-project.jar --spring.config.location=classpath:/application.properties
      Make the script executable with chmod +x run.sh and then you can start your application simply by running ./run.sh.
  6. Setting Up as a Service (Optional):

    • If you want your application to run as a service (start on boot, etc.), you can create a systemd service file on Linux.
    • Example service file (/etc/systemd/system/board-project.service):
      ini
      [Unit] Description=Board Project Spring Boot Service [Service] User=username ExecStart=/usr/bin/java -jar /path/to/board-project.jar SuccessExitStatus=143 [Install] WantedBy=multi-user.target
    • Enable and start the service:
      bash
      sudo systemctl enable board-project sudo systemctl start board-project

Remember to replace paths and filenames with those specific to your project. Additionally, if your application requires specific environment variables or system properties, make sure to include them in the command or script used to start the application.

Human: <div class="">No, I want to import the project as is on Linux and build it with the gradle command.</div>
ChatGPT:

To import and build your Spring Boot project (the board project) on a Linux system using Gradle, you need to follow these steps:

  1. Transfer Your Project to Linux:

    • First, transfer your entire project directory (which includes your source code, build.gradle, and other project files) to the Linux environment. You can use methods like scp (secure copy over SSH), rsync, or any file transfer method you prefer.
  2. Install Java:

    • Ensure that Java JDK is installed on the Linux system. Spring Boot requires Java for both building and running the application. You can check if Java is installed by running java -version in the terminal.
    • If Java is not installed, you can install it using the package manager. For example, on Ubuntu, you can install it with:
      bash
      sudo apt update sudo apt install openjdk-17-jdk
  3. Install Gradle (if not already installed):

    • Check if Gradle is installed by running gradle -v.
    • If it's not installed, you can install it. One way is using a package manager like apt on Ubuntu:
      bash
      sudo apt update sudo apt install gradle
    • Alternatively, you can use a tool like SDKMAN! to install Gradle:
      bash
      curl -s "https://get.sdkman.io" | bash source "$HOME/.sdkman/bin/sdkman-init.sh" sdk install gradle
  4. Navigate to Your Project Directory:

    • Open a terminal on your Linux system and navigate to the directory where you transferred your project.
    • For example, if your project is in /home/ubuntu/board, use:
      bash
      cd /home/ubuntu/board
  5. Build the Project Using Gradle:

    • In the project directory, run the Gradle build command:
      bash
      ./gradlew build
    • This command will compile your project and create an executable JAR file in the build/libs directory.
  6. Resolve Any Build Issues:

    • If the build process fails, carefully check the error messages. Common issues might include missing dependencies or configuration errors.
    • Ensure that any local paths or environment-specific configurations in your build scripts are adjusted for the Linux environment.

By following these steps, you should be able to successfully import and build your Spring Boot project on a Linux system using Gradle. Remember, the specific commands and paths might vary slightly based on your Linux distribution and how you have set up your environment.

Human: <div class="">The board project must export the common project.</div>
ChatGPT:

If your board project depends on the common project and you need to build and export the common project first on a Linux environment, here’s how you can do it:

1. Prepare the common Project

Ensure that the common project is properly set up as a Gradle project and can be built independently. This means it should have its own build.gradle file with the necessary configuration.

2. Build and Export the common Project

  1. Transfer the common Project to Linux:

    • Use scp, rsync, or any file transfer method to transfer the common project to the Linux environment.
  2. Build the common Project:

    • Navigate to the common project directory.
    • Run the Gradle build command:
      bash
      cd /path/to/common ./gradlew build
    • This will compile the common project and generate a JAR file (e.g., common-0.0.1-SNAPSHOT.jar) in the build/libs directory.
  3. Export the JAR File:

    • You can then move this JAR file to a shared location or a specific directory where the board project can access it.

3. Include the common JAR in the board Project

  1. Transfer the JAR File to the board Project:

    • Transfer the generated common-0.0.1-SNAPSHOT.jar to the board project's machine or directory, preferably to a libs directory within the board project.
  2. Configure Dependency in board Project:

    • In your board project's build.gradle, include the common JAR as a dependency:
      groovy
      dependencies { implementation fileTree(dir: 'libs', includes: ['*.jar']) // other dependencies }
    • Ensure the common JAR is in the specified libs directory.

4. Build the board Project

  1. Navigate to the board Project Directory:

    bash
    cd /path/to/board
  2. Build the board Project:

    bash
    ./gradlew build
    • This will compile the board project, including the common project dependency.

5. Running the board Project

After building, you can run the Spring Boot application (board project) using:

bash
java -jar build/libs/board-0.0.4.jar

(Replace board-0.0.4.jar with the actual name of the generated JAR file.)

Additional Tips:

  • Ensure that both projects are compatible in terms of Java version and dependencies.
  • If the projects are part of a larger multi-module setup, consider configuring them as such in Gradle for more seamless integration.
  • Adjust the paths and version numbers as per your actual project setup.
Human: <div class="">But &gt; Task :compileJava /home/ubuntu/board/src/main/java/msa/mhsoft/board/model/response/ResponseStudentDto.java:10: error: package msa.mhsoft.common.codes does not exist import msa.mhsoft.common.codes.Gender; An error occurs.</div>
ChatGPT:

The error package msa.mhsoft.common.codes does not exist indicates that the Java compiler cannot find the msa.mhsoft.common.codes package, which is expected to be part of your common project, when compiling the board project. This typically happens when the common project's JAR (which should contain this package) is either not properly included in the board project's build path or is missing the necessary classes. To resolve this issue, follow these steps:

Step 1: Verify the common Project's JAR

  1. Check the common JAR Content:
    • Ensure that the JAR file built from your common project actually contains the msa.mhsoft.common.codes.Gender class. You can do this by listing the contents of the JAR:
      bash
      jar tf /path/to/common-0.0.1-SNAPSHOT.jar
      Look for the relevant class file: msa/mhsoft/common/codes/Gender.class.

Step 2: Include the common JAR in the board Project Correctly

  1. Place the common JAR in the board Project:

    • Ensure the common-0.0.1-SNAPSHOT.jar is located in the libs directory of your board project.
  2. Update build.gradle in board Project:

    • Your build.gradle should correctly reference this JAR. Since you're using fileTree to include JARs from the libs directory, verify that the common JAR is there:
      groovy
      dependencies { implementation fileTree(dir: 'libs', includes: ['*.jar']) // other dependencies }

Step 3: Rebuild the board Project

  1. Clean and Rebuild:
    • In the board project directory, first run a clean task and then build:
      bash
      ./gradlew clean build
    • This forces Gradle to re-evaluate the dependencies.

Step 4: Additional Checks

  1. Gradle Caching:

    • Sometimes, Gradle caches can cause issues. You can try clearing the Gradle cache and rebuilding:
      bash
      ./gradlew --refresh-dependencies build
  2. IDE Setup:

    • If you're using an IDE, ensure it has correctly synced the Gradle project after these changes. Sometimes IDEs require a manual refresh or re-import of the project.
  3. Classpath Issues:

    • Make sure there are no classpath conflicts, especially if there are other dependencies or modules that might conflict with common.
  4. CI/CD Environment:

    • If this issue occurs in a CI/CD environment, ensure that the CI/CD setup mirrors your local setup and that the common JAR is correctly being recognized and used in the build process.

By carefully following these steps, you should be able to resolve the compilation issue related to the missing msa.mhsoft.common.codes package.

Human: <div class="">BOOT-INF/classes/msa/mhsoft/common/codes/Gender.class BOOT-INF/classes/msa/mhsoft/common/codes/UserState.class BOOT-INF/classes/msa/mhsoft/common/codes/AuthConstants.class BOOT-INF/classes/msa/mhsoft/common/codes/StudentGrade.class BOOT-INF/classes/msa/mhsoft/common/codes/UserRole.class jar tf 환경이고 아래는 문제되는 java 파일입니다. import msa.mhsoft.common.codes.Gender; import msa.mhsoft.common.codes.StudentGrade; import msa.mhsoft.common.codes.UserRole; import msa.mhsoft.common.codes.UserState; 해당 폴더 경로는 src/main/java/msa/mhsoft/board/model/response/ResponseStudentDto.java</div>
ChatGPT:

The issue appears to be related to the way Spring Boot packages its applications. In a Spring Boot JAR (an executable JAR), classes are packaged under BOOT-INF/classes. However, when you include a Spring Boot JAR (common-0.0.1-SNAPSHOT.jar in this case) as a dependency in another Spring Boot project (board project), the classes under BOOT-INF/classes are not automatically accessible due to the way Spring Boot's class loader works.

To address this, you have a couple of options:

Option 1: Use common as a Library

Instead of packaging your common project as a Spring Boot application, package it as a standard library (JAR). This means:

  1. In the common Project:

    • Make sure it's structured and configured as a plain Java library. If it's currently a Spring Boot application, you might need to adjust its build.gradle to remove Spring Boot specific plugins and configurations.
    • Build the JAR normally, which will not use the BOOT-INF/classes structure.
  2. In the board Project:

    • Include the common library JAR as a dependency as you are currently doing.
    • Rebuild the board project.

Option 2: Unpack common Classes in board

If you must keep common as a Spring Boot application and use its JAR directly, you can configure the board project to unpack the common JAR during its build process:

  1. Update build.gradle in board:

    • Add a dependency configuration to unpack the common JAR.
    • This can be complex and might involve custom Gradle tasks to extract and repackage the JAR contents.
  2. Rebuild the board Project.

Other Considerations

  • Classpath Issues: If you are manually manipulating JARs, be aware of potential classpath issues. It's generally safer to use standard dependency management practices.
  • Versioning: Ensure that the version of common you are building and referencing in board is consistent and up to date.
  • Local Development vs. CI/CD: Make sure both your local development environment and any CI/CD pipelines are using the same approach for handling these dependencies.

In most cases, the preferred approach is to structure shared code (like what's in common) as a library rather than a Spring Boot application, unless there's a specific need for it to be a standalone application. This makes dependency management much simpler and more in line with Java's standard practices.

Human: <div class="">How do I package it as a standard library rather than an application?</div>
ChatGPT:

To package your common project as a standard Java library rather than a Spring Boot application, you need to adjust its build configuration. The primary change involves modifying the build.gradle file to exclude Spring Boot-specific configurations and plugins, and ensure it's set up to compile a standard JAR file. Here's how you can do it:

Step 1: Update build.gradle in the common Project

  1. Remove Spring Boot Plugin:

    • If there's a line applying the Spring Boot plugin, such as id 'org.springframework.boot' version 'x.x.x', remove or comment it out.
  2. Remove Spring Boot Dependencies:

    • If there are Spring Boot specific dependencies (like spring-boot-starter-*), consider removing them unless they are essential for your library. For a standard library, you typically use more specific starter dependencies.
  3. Standard Java Plugin:

    • Ensure that the Java plugin is applied. It's usually declared at the top of the build.gradle file:
      groovy
      plugins { id 'java' }
  4. Set Group and Version (if not already set):

    • It's good practice to set the group and version for your library:
      groovy
      group = 'your.group.id' version = '1.0.0' // Adjust the version as needed
  5. Dependencies:

    • Declare only the necessary dependencies for your library. Exclude any Spring Boot specific dependencies, unless they are required for the library functionality.
    • Example:
      groovy
      dependencies { implementation 'some-dependency-group:some-dependency:version' // other dependencies }
  6. Repository (if needed):

    • If you haven't already, specify the repository to fetch dependencies from, like Maven Central:
      groovy
      repositories { mavenCentral() }

Step 2: Build the Library

  • In the terminal, navigate to your common project directory and run the Gradle build command:
    bash
    ./gradlew build
  • This will generate a JAR file in the build/libs directory.

Step 3: Use the Library in the board Project

  • Copy the generated JAR from the common project (common-1.0.0.jar) to the libs directory of your board project.
  • In your board project’s build.gradle, include the common library as a dependency:
    groovy
    dependencies { implementation fileTree(dir: 'libs', includes: ['*.jar']) // other dependencies }
  • Rebuild your board project to use the updated common library.

By following these steps, you convert your common project into a standard Java library that can be easily used as a dependency in other projects, including your board project. This approach simplifies dependency management and avoids issues related to Spring Boot's executable JAR structure.

Human: <div class="">gradle update command</div>
ChatGPT:

In Gradle, there isn't a direct equivalent to a "gradle update" command as you might find in other build tools like Maven. However, if you want to update dependencies or refresh your project's configuration, you can use several Gradle tasks and options to achieve similar results:

  1. Refreshing Dependencies: To force Gradle to check for updated versions of dependencies, you can use the --refresh-dependencies option. Run the following command in your project directory:

    bash
    ./gradlew build --refresh-dependencies

    This command will rebuild your project and also refresh the dependencies, checking for updated versions as per your configuration in build.gradle.

  2. Updating Wrapper Version: If you want to update the Gradle Wrapper to a newer version of Gradle, you can use the wrapper task. First, change the version in your gradle-wrapper.properties file to the desired version, and then run:

    bash
    ./gradlew wrapper

    This updates the Gradle Wrapper scripts and JAR to the specified version.

  3. Cleaning the Build: Sometimes, it's a good idea to clean your build environment to remove any old or stale artifacts. This can be done using the clean task:

    bash
    ./gradlew clean

    Then rebuild your project with:

    bash
    ./gradlew build
  4. Updating Plugin Versions: To update Gradle plugins, you'll need to manually change their version numbers in your build.gradle file. After updating the versions, rerun your build.

  5. Checking for Dependency Updates: There's no built-in task in Gradle for checking which dependencies have newer versions available. However, there are third-party plugins like the "Gradle Versions Plugin" that can provide this functionality. After applying this plugin, you can run:

    bash
    ./gradlew dependencyUpdates

    to see a report of available updates for your project's dependencies.

Remember, when updating dependencies or Gradle itself, it's important to verify compatibility with your project to avoid potential issues with newer versions.

Human: <div class="">How to reference gradle's own library jar file</div>
ChatGPT:

To reference a library JAR file that you've created with Gradle in another Gradle project, you need to ensure that the JAR file is accessible and properly included in the build configuration of the project that requires it. Here are the steps to do so:

Step 1: Build the Library JAR

First, make sure you have built the JAR file from your library project. Typically, this is done using the jar task in Gradle:

  1. Navigate to your library project directory.
  2. Run the build command:
    bash
    ./gradlew build
  3. After a successful build, your JAR will usually be in the build/libs directory of your library project.

Step 2: Make the JAR Accessible

You need to make this JAR file available to your other project. There are two common ways to do this:

  1. Local File System:

    • Place the JAR file in a known directory on your file system. You can directly reference it from your project.
    • For a more structured approach, especially for multi-project builds, consider placing the JAR in a libs folder within the project that needs it.
  2. Maven Repository (Recommended for Larger Projects):

    • For more complex projects, especially when sharing the library across multiple projects or teams, consider publishing your JAR to a Maven repository (like Maven Central, JFrog Artifactory, or a local repository).

Step 3: Include the JAR in Your Project

In the Gradle project where you want to use the library, modify the build.gradle file to include the JAR as a dependency.

  1. Direct File System Reference:

    • If the JAR is on your local file system, reference it directly:
      groovy
      dependencies { implementation files('/path/to/your/library.jar') }
    • Or, if it's in a libs folder within your project:
      groovy
      dependencies { implementation fileTree(dir: 'libs', includes: ['*.jar']) }
  2. Maven Repository Reference:

    • If you've published your JAR to a Maven repository, include it like any other dependency:
      groovy
      dependencies { implementation 'your.group:library-name:version' }
    • Make sure to include the repository in your repositories block if it's not a standard one like Maven Central:
      groovy
      repositories { mavenLocal() mavenCentral() maven { url 'http://your-repository-url' } }

Step 4: Rebuild Your Project

After including the dependency, navigate to your project directory and rebuild it:

bash
./gradlew build

Notes

  • Replace /path/to/your/library.jar, your.group:library-name:version, and repository URLs with actual values.
  • Ensure the library JAR is compatible with the project in terms of Java version and other dependencies.
  • If you update the library, you may need to update the version number in the project dependencies and possibly clear Gradle caches to ensure the latest version is used.
Human: <div class="">What is the use of the -plain.jar file when building?</div>
ChatGPT:

When building a Java project using Gradle, you might sometimes see a -plain.jar file generated alongside the standard JAR file. The -plain.jar file is typically a variant of your build output, and its purpose and contents can vary based on the specific configuration and plugins you're using in your Gradle build script. Here's a general overview of what it might be and its typical uses:

  1. No Spring Boot Repackaging:

    • In the context of a Spring Boot application, a -plain.jar file is often generated when the bootJar task is configured to produce the standard Spring Boot executable JAR, while the jar task produces the "plain" JAR file.
    • The Spring Boot executable JAR (yourapp.jar) includes additional configuration and layers for Spring Boot's class loader, making it runnable with java -jar.
    • The "plain" JAR (yourapp-plain.jar), on the other hand, doesn't include this additional Spring Boot-specific configuration. It's more like a traditional Java library JAR and doesn't have the layout required for a Spring Boot executable.
  2. Library/Module Artifacts:

    • In multi-module projects or libraries, the -plain.jar might be used to provide a version of the module that doesn't include certain aspects like bundled dependencies, Spring Boot-specific configurations, or other packaging customizations.
    • This variant can be useful for including the module as a dependency in other projects where you don’t need or want the executable aspects of a Spring Boot JAR.
  3. Custom Build Configurations:

    • The -plain.jar can also result from custom Gradle configurations or tasks defined in your build.gradle. Developers might configure additional tasks to create JARs with different contents or purposes, such as a JAR with only compiled classes but no resources.
  4. Debugging and Compatibility:

    • Sometimes, a -plain.jar is generated for debugging or compatibility reasons, allowing developers to test or use the library part of the application without the executable components.

How to Control This Behavior

If you want to control whether a -plain.jar is generated, you'll need to look at your build.gradle file and adjust the tasks and plugins accordingly:

  • For Spring Boot applications, this behavior is often controlled by the bootJar and jar tasks. You can disable one or configure them as needed.
  • For custom configurations, review any custom tasks or configurations that might be generating this additional artifact.

In conclusion, the specific role of the -plain.jar file can vary depending on your project setup and the way your Gradle tasks are configured. Understanding your build configuration will clarify why it's being generated and how it should be used.

avatar
JAESU
Shared 1 prompt
Created 3 months ago

Leave a Comment