2021.5.6 团队冲刺第九天

今天封装了一下工具类，快完成了

public static String postGeneralUrl(String generalUrl, String contentType, String params, String encoding)
        throws Exception {
    URL url = new URL(generalUrl);
    // 打开和URL之间的连接
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("POST");
    // 设置通用的请求属性
    connection.setRequestProperty("Content-Type", contentType);
    connection.setRequestProperty("Connection", "Keep-Alive");
    connection.setUseCaches(false);
    connection.setDoOutput(true);
    connection.setDoInput(true);

    // 得到请求的输出流对象
    DataOutputStream out = new DataOutputStream(connection.getOutputStream());
    out.write(params.getBytes(encoding));
    out.flush();
    out.close();

    // 建立实际的连接
    connection.connect();
    // 获取所有响应头字段
    Map<String, List<String>> headers = connection.getHeaderFields();
    // 遍历所有的响应头字段
    for (String key : headers.keySet()) {
        System.err.println(key + "--->" + headers.get(key));
    }
    // 定义 BufferedReader输入流来读取URL的响应
    BufferedReader in = null;
    in = new BufferedReader(
            new InputStreamReader(connection.getInputStream(), encoding));
    String result = "";
    String getLine;
    while ((getLine = in.readLine()) != null) {
        result += getLine;
    }
    in.close();
    System.err.println("result:" + result);
    return result;
}