使用Java进行网络编程，HTTP请求与响应示例-蒲公英云

使用Java进行网络编程，HTTP请求与响应示例

原创 r囧r小猫 2024-12-01 04:48 179阅读 0赞

在Java中，我们可以使用java.net和java.io包来实现HTTP请求与响应。以下是一个简单的示例，使用HttpURLConnection进行GET请求：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpGetExample {
    public static void main(String[] args) {
        String urlStr = "http://example.com/api/data"; // Replace with your API endpoint
        try {
            URL url = new URL(urlStr);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            // Set request method
            connection.setRequestMethod("GET");
            // Check if response code is 200 (OK)
            int responseCode = connection.getResponseCode();
            System.out.println("Response Code: " + responseCode);
            // If the request was successful, read the response
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()))));
            String inputLine;
            StringBuffer content = new StringBuffer();
            while ((inputLine = in.readLine()) != null)) {
                content.append(inputLine);
            }
            in.close();
            System.out.println("Response Content: " + content.toString());
        } catch (Exception e) {
            System.err.println(e.getMessage());
        }
    }
}