Android - HTTPUrlConnection将数据发布到服务器

try {
    // 创建URL对象
    URL url = new URL("http://example.com/api/post");

    // 打开连接
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();

    // 设置请求方法和其他请求头信息
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Content-Type", "application/json");

    // 设置请求体
    String requestBody = "{\"key\":\"value\"}";
    connection.setDoOutput(true);
    OutputStream outputStream = connection.getOutputStream();
    outputStream.write(requestBody.getBytes());
    outputStream.flush();
    outputStream.close();

    // 发送请求
    connection.connect();

    // 获取响应
    int responseCode = connection.getResponseCode();
    if (responseCode == HttpURLConnection.HTTP_OK) {
        // 响应成功
        InputStream inputStream = connection.getInputStream();
        // 解析响应数据
        // ...
    } else {
        // 响应失败
        // ...
    }

    // 断开连接
    connection.disconnect();
} catch (IOException e) {
    e.printStackTrace();
}