ทำความเข้าใจเมธอดและสถานะ HTTP

HTTP Methods: The Verbs of REST

GET: Retrieving Resources

public class HttpGetDemo {
  public static void main(String[] args) {
    String resourcePath = "/api/products/123";
    System.out.println("Simulating GET request for: " + resourcePath);
    System.out.println("Expected: Server sends product details.");
  }
}

POST: Creating New Resources

public class HttpPostDemo {
  public static void main(String[] args) {
    String newProductData = "{\"name\":\"Laptop\", \"price\":1200}";
    System.out.println("Simulating POST request to create resource with data: " + newProductData);
    System.out.println("Expected: Server creates new product and returns its ID.");
  }
}

PUT: Updating Existing Resources

public class HttpPutDemo {
  public static void main(String[] args) {
    String resourceId = "456";
    String updatedProductData = "{\"name\":\"Gaming Laptop\", \"price\":1500}";
    System.out.println("Simulating PUT request to update resource " + resourceId + " with data: " + updatedProductData);
    System.out.println("Expected: Server fully updates product " + resourceId + ".");
  }
}

DELETE: Removing Resources

public class HttpDeleteDemo {
  public static void main(String[] args) {
    String resourceId = "789";
    System.out.println("Simulating DELETE request for resource: " + resourceId);
    System.out.println("Expected: Server removes product " + resourceId + ".");
  }
}

HTTP Status Codes: Server's Response

Common 2xx Success Codes

Common 4xx Client Error Codes

Common 5xx Server Error Codes

Quick Check: Methods & Statuses

Recap: Methods & Statuses