Java Minecraft 身份验证

Question

我需要找到一种方法来检查我的世界用户名和密码是否有效。

我发现这个文档讲述了很多有关 Minecraft 身份验证的事情:http://wiki.vg/Authentication

看起来它需要一个 JSON HTTP POST 请求，但我不知道如何做到这一点:S

我进行了很多搜索并查看了很多示例，但这些都不起作用。我得到的最好结果是控制台中没有打印结果或出现 403 错误。

谢谢

Answer 1

我知道怎么做了!

    private static String MakeJSONRequest(String username, String password){
        JSONObject json1 = new JSONObject();
        json1.put("name", "Minecraft");
        json1.put("version", 1);
        JSONObject json = new JSONObject();
        json.put("agent", json1);
        json.put("username", username);
        json.put("password", password);

        return json.toJSONString();
    }

    private static String httpRequest(URL url, String content) throws Exception {
        byte[] contentBytes = content.getBytes("UTF-8");

        URLConnection connection = url.openConnection();
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setRequestProperty("Accept-Charset", "UTF-8");
        connection.setRequestProperty("Content-Type", "application/json");
        connection.setRequestProperty("Content-Length", Integer.toString(contentBytes.length));

        OutputStream requestStream = connection.getOutputStream();
        requestStream.write(contentBytes, 0, contentBytes.length);
        requestStream.close();

        String response = "";
        BufferedReader responseStream;
        if (((HttpURLConnection) connection).getResponseCode() == 200) {
            responseStream = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
        } else {
            responseStream = new BufferedReader(new InputStreamReader(((HttpURLConnection) connection).getErrorStream(), "UTF-8"));
        }

        response = responseStream.readLine();
        responseStream.close();

        if (((HttpURLConnection) connection).getResponseCode() != 200) {
            //Failed to login (Invalid Credentials or whatever)
        }

        return response;
    }

如何使用它:

System.out.println(httpRequest(new URL("https://authserver.mojang.com/authenticate"), MakeJSONRequest("YourUsername", "YourPassword")));