Create README.md

Author: javohirdeveloper0612

README.md

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+# MinIO File Service
+
+This project is a Java Spring Boot application that integrates MinIO, an open-source object storage service. The application provides functionalities for managing file uploads, storage, and retrieval, using MinIO as a storage backend.
+
+## Features
+
+- **File Upload**: Allows users to upload files to the MinIO server.
+- **File Download**: Enables downloading of stored files.
+- **File Metadata Management**: Keeps track of file metadata through a database.
+- **Error Handling**: Custom exceptions are used to provide meaningful error messages.
+
+## Technologies Used
+
+- **Java 11**: Core programming language.
+- **Spring Boot**: Framework for building the RESTful API.
+- **MinIO**: Object storage system used for storing uploaded files.
+- **Maven**: Dependency management.
+- **H2 Database**: Embedded database for storing file metadata (can be replaced with other databases).
+
+## Project Structure
+
+- **`config`**: Contains configuration classes including MinIO connection properties.
+- **`controller`**: Handles incoming HTTP requests related to file operations.
+- **`domain`**: Represents entities, such as `FileEntity`, used to store file-related data.
+- **`repo`**: Manages database operations for storing and retrieving file metadata.
+- **`service`**: Contains services for interacting with MinIO and managing files.
+- **`utils`**: Utility classes for file operations.
+
+## Getting Started
+
+### Prerequisites
+
+- **Java 11** or higher
+- **Maven** for building the project
+- **MinIO Server** running locally or accessible remotely
+
+### Installation
+
+1. **Clone the repository**
+   ```bash
+   git clone <repository-url>
+   cd minio-file-service
+   ```
+
+2. **Set up MinIO configuration**
+   - Update the `.env` file or `application.properties` with your MinIO credentials (e.g., access key, secret key, and endpoint).
+
+3. **Build the project**
+   ```bash
+   ./mvnw clean install
+   ```
+
+4. **Run the application**
+   ```bash
+   ./mvnw spring-boot:run
+   ```
+
+### Usage
+
+- **Upload a File**: Use an API client like Postman to send a `POST` request to `/api/files/upload` with the file in the request body.
+- **Download a File**: Send a `GET` request to `/api/files/download/{fileId}` to retrieve a file.
+
+## Configuration
+
+- The application properties for connecting to MinIO are defined in the `application.properties` file.
+- You can modify the following settings:
+  - `minio.url`: The URL of the MinIO server.
+  - `minio.access-key`: Your MinIO access key.
+  - `minio.secret-key`: Your MinIO secret key.
+
+## Error Handling
+
+The application uses custom exceptions to handle errors, such as `FileException` and `InvalidRequestException`. These exceptions ensure meaningful messages are returned to users.
+
+## License
+
+This project is licensed under the MIT License. See the `LICENSE` file for details.
+
+## Contributing
+
+Contributions are welcome! Please open an issue or submit a pull request for any improvements or bug fixes.
+
+## Contact
+
+For any issues or inquiries, please contact:
+
+- **Developer Name:** Javohir Yallayev
+- **Email:** javoxiryallayev1@gmail.com  
+- **GitHub:** [javohirdeveloper0612](https://github.com/javohirdeveloper0612)