授权后如何使用API​​连接？爪哇

Question

从技术上讲，我正在运行授权，我的程序可以使用创建的BoxAPIConnection从盒云下载/上传。 但是我只能让它在这一部分中起作用：

public void loginButtonClicked() throws IOException, URISyntaxException
{

     if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
            Desktop.getDesktop().browse(new URI("http://localhost:4567/start"));
        }

     get("/start", (req, res) -> {

            // Redirect user to login with Box
                String box_redirect = ConfigAuth.box_redirect
                  + "?response_type=code"
                  + "&client_id=" + ConfigAuth.client_id 
                  + "&client_secret=" + ConfigAuth.client_secret
                  + "&redirect_uri=" + ConfigAuth.redirect_uri;

                res.redirect(box_redirect);
                return "redirecting...";
            });



     get("/return", (req, res) -> {
             // Capture authentication code 
             String code = req.queryParams("code");


      // Instantiate new Box API connection object
       BoxAPIConnection api = new BoxAPIConnection(ConfigAuth.client_id,ConfigAuth.client_secret,code);

      String rootID = "0";
        String targetDir = "F:\\eclipse\\khjbgl\\Downloaded Files\\"; 
        DownloadAll(rootID, targetDir, api);


      return "display page";  
         });

该按钮仅用于登录和授权软件，因此不应立即下载任何内容。 现在是实际的问题：如果我在其他任何地方调用下载功能，则无法访问在登录过程中创建的BoxAPIConnection api。 api在身份验证部分中位于本地，但在其他功能中也需要它。 我尝试将api连接的状态保存到文件中，然后在下载功能中恢复它，但这给了我json.ParseException。

public void loginButtonClicked() throws IOException, URISyntaxException
{

     if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
            Desktop.getDesktop().browse(new URI("http://localhost:4567/start"));
        }

     get("/start", (req, res) -> {

            // Redirect user to login with Box
                String box_redirect = ConfigAuth.box_redirect
                  + "?response_type=code"
                  + "&client_id=" + ConfigAuth.client_id 
                  + "&client_secret=" + ConfigAuth.client_secret
                  + "&redirect_uri=" + ConfigAuth.redirect_uri;

                res.redirect(box_redirect);
                return "redirecting...";
            });



     get("/return", (req, res) -> {
             // Capture authentication code 
             String code = req.queryParams("code");


      // Instantiate new Box API connection object
       BoxAPIConnection api = new BoxAPIConnection(ConfigAuth.client_id,ConfigAuth.client_secret,code);
       JSONParser parser = new JSONParser();
       JSONObject obj = (JSONObject) parser.parse(api.save());
      FileWriter file = new FileWriter("API.txt");
      try {
          file.write(obj.toJSONString());
          System.out.println("successfully copied json object to file");
          System.out.println("\nJSON Object: " + obj);
      } catch (IOException e)
      {
          e.printStackTrace();
      }
      finally {
          file.flush();
          file.close();
      }
      //String rootID = "0";
        //String targetDir = "F:\\eclipse\\khjbgl\\Downloaded Files\\"; 
        //DownloadAll(rootID, targetDir, api);


      return "display page";  
         });


}


public void DownloadAllClick (ActionEvent event) throws FileNotFoundException, IOException {

    File file = new File ("API.txt");
    BufferedReader br = new BufferedReader(new FileReader(file));
    StringBuilder sb = new StringBuilder();
    String line = null;
    String ls = System.getProperty("line.seperator");
    while ((line = br.readLine()) != null) {
        sb.append(line);
        sb.append(ls);
    }
    //sb.deleteCharAt(sb.length() -1);
    br.close();
    String apiString = sb.toString();

        BoxAPIConnection api = BoxAPIConnection.restore(ConfigAuth.client_id, ConfigAuth.client_secret, apiString); 
    String rootID = "0";
    String targetDir = "F:\\eclipse\\khjbgl\\Downloaded Files\\"; 
    DownloadAll(rootID, targetDir, api);
}

如何在其他功能中使用创建的api，而又不提示用户再次授权整个软件？

Answer 1

创建一个JVM级别的Cache（HashMap）并将apiconnection存储在其中。保存它之后，请一直使用该apiconnection直至其过期。 连接在hr（大约）后过期后，从缓存中删除旧的api并保存新的api。