Java调用商品详情API的项目实践

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class ProductDetailAPI {

    public static void main(String[] args) {
        try {
            // 替换为实际的商品ID
            String productId = "123456";
            // 替换为实际的API URL
            String apiUrl = "https://api.example.com/products/" + productId;

            URL url = new URL(apiUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            connection.setRequestProperty("Accept", "application/json");

            if (connection.getResponseCode() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + connection.getResponseCode());
            }

            BufferedReader br = new BufferedReader(new InputStreamReader((connection.getInputStream())));
            String output;
            System.out.println("Output from Server .... 
");
            while ((output = br.readLine()) != null) {
                System.out.println(output);
            }

            connection.disconnect();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import com.google.gson.Gson;

public class Product {
    private String id;
    private String name;
    private double price;
    private int stock;

    // getters and setters
}

public class Main {
    public static void main(String[] args) {
        String json = "{\"id\":\"123456\",\"name\":\"Example Product\",\"price\":9.99,\"stock\":100}";

        Gson gson = new Gson();
        Product product = gson.fromJson(json, Product.class);

        System.out.println("Product ID: " + product.getId());
        System.out.println("Product Name: " + product.getName());
        System.out.println("Product Price: " + product.getPrice());
        System.out.println("Product Stock: " + product.getStock());
    }
}