Java调用第三方接口的秘籍：技巧、案例与最佳实践

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
 
public class ThirdPartyApiCaller {
 
    public static void main(String[] args) {
        String apiUrl = "http://api.example.com/data";
        String apiKey = "your_api_key_here";
 
        try {
            URL url = new URL(apiUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            connection.setRequestProperty("Authorization", "Bearer " + apiKey);
 
            if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String line;
                StringBuilder response = new StringBuilder();
 
                while ((line = reader.readLine()) != null) {
                    response.append(line);
                }
 
                reader.close();
                connection.disconnect();
 
                System.out.println("Response: " + response.toString());
            } else {
                System.out.println("GET request not worked");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

这段代码展示了如何使用Java发起一个简单的HTTP GET请求到第三方API，并处理返回的响应。它使用了HttpURLConnection类，这是Java标准库中处理HTTP请求的一个基本方式。代码中包含了设置请求头（例如认证方式），以及处理响应的基本逻辑。