Java - 通过POST方法轻松发送HTTP参数

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class Main {
    public static void main(String[] args) throws Exception {
        String url = "https://example.com/api";
        URL objUrl = new URL(url);
        HttpURLConnection con = (HttpURLConnection) objUrl.openConnection();

        con.setRequestMethod("POST");
        con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        String urlParameters = "param1=value1&param2=value2";

        con.setDoOutput(true);
        OutputStream outputStream = con.getOutputStream();
        outputStream.write(urlParameters.getBytes(StandardCharsets.UTF_8));
        outputStream.flush();
        outputStream.close();

        int responseCode = con.getResponseCode();
        System.out.println("POST Response Code :: " + responseCode);

        if (responseCode == HttpURLConnection.HTTP_OK) {
            // 处理响应内容
        } else {
            // 处理错误情况
        }
    }
}