Practical Cases of Using ChatGPT for Backend Development Tasks

The document records practical cases where cloud‑trading developers use ChatGPT to solve real development problems, covering design, coding, testing, integration, and deployment.

1. Resource scheduling: ChatGPT is guided to split weekdays and weekends and generate schedule prompts.

2. Regex explanation: ChatGPT interprets a regular‑expression rule lacking comments, providing detailed character meanings.

3. CSV writing: ChatGPT writes a program that creates a 10,000‑line CSV file with numbered filenames, then adapts it for unknown total rows.

4. JavaBean‑to‑JSON IDEA plugin: ChatGPT supplies step‑by‑step instructions and code for developing a plugin that converts JavaBeans to JSON.

5. Annotation usage reminder: An example shows an incorrect @Inject annotation; the correct use of @Retention with RetentionPolicy (SOURCE, CLASS, RUNTIME) is explained.

6. Spring IoC learning: A brief note on studying the Spring IoC framework.

7. JSON string formatting and compression: Demonstrates handling and compressing JSON strings.

8. Naming origin: A poetic explanation of the article's title.

9. JSON to Java Bean with Lombok: Iterative prompts generate a Java entity class from JSON, using Lombok to simplify code and adding comments.

10. Java 8 stream flattening: Collects all Long values from a Map<Long, Set<Long>> into a single Set<Long> using flatMap and collect. The full code example is:

import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args) {
        Map<Long, Set<Long>> targetProductIdAndSkuIdsMap = ...; // initialize map
        Set<Long> skuIds = targetProductIdAndSkuIdsMap.values()
                .stream()
                .flatMap(Set::stream)
                .collect(Collectors.toSet());
        System.out.println(skuIds);
    }
}

11. CI pipeline error‑log analysis: ChatGPT analyzes selected error logs from a pipeline, providing intelligent suggestions to reduce operational costs.