java 发送 http请求 代码

好的，以下是 Java 发送 HTTP 请求的代码示例：

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

public class HttpExample {

    public static void main(String[] args) throws Exception {

        String url = "http://example.com/api/getData";
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // 设置请求方法
        con.setRequestMethod("GET");

        // 添加请求头
        con.setRequestProperty("User-Agent", "Mozilla/5.0");

        // 发送 GET 请求
        int responseCode = con.getResponseCode();
        System.out.println("\nSending 'GET' request to URL : " + url);
        System.out.println("Response Code : " + responseCode);

        // 读取响应内容
        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        // 打印响应内容
        System.out.println(response.toString());
    }
}

希望能帮到您。如果您有任何其他问题，欢迎继续提问。