基于CloudRail的Dropbox认证

Question

我尝试过使用CloudRail集成Dropbox，但遇到了一些问题：

1. 如何通过CloudRail API检索访问令牌
2. 在简单的控制台应用程序中编码时，redirecURI是什么？
3. 最后，我需要在System.out.print方法中实现onSuccess。

以下是我尝试过的：

​

package com.cloudrail.userInterface;

import java.io.InputStream;
import com.cloudrail.auth.UriRedirectListener;
import com.cloudrail.auth.UriView;
import com.cloudrail.auth.uriRedirect.HttpsServerRedirectListener;
import com.cloudrail.auth.uriView.LocalUriCaller;
import com.cloudrail.exception.CloudRailException;
import com.cloudrail.userInterface.CloudDownload.DropboxDLResponseListener;

public class CloudDownloadTest {

    final static String dropboxID = "someID"; // Put your Dropbox client id
    final static String dropboxSecret = "someSecret"; // Put your Dropbox client secret
    final static String dropboxCloudFilePath = "afile.txt"; // Put the path to the file that should be downloaded from Dropbox
    final static String dropboxDiskFilePath = "somePath/CopiedDPBFile"; // Put the path the Dropbox file should be downloaded to



//  I have questions about redirectURI - What is it how can I figure it out or take from somwehere.
//  Can I just give the hhtps://www.dropbox.com or it should be the site url where I integrate the API.
    final static String redirectURI = "soemURIString";
    final static String state = Long.toHexString(Double.doubleToLongBits(Math.random())); // Random state to prevent CSRF
    // First argument is a dummy SSL context for local testing
    final static UriRedirectListener uriRedirectListener = new HttpsServerRedirectListener(Helper.getDummyContext(), 8080);
    final static UriView localUriCaller = new LocalUriCaller(); // Opens URLs in the local browser

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        CloudDownload cloudDownload = new CloudDownload(dropboxID, redirectURI, dropboxSecret, state);

        cloudDownload.init_DropboxContentAPI_Auth(localUriCaller, uriRedirectListener, new AccessTokenCallback() {

            @Override
            public void onError(CloudRailException arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onToken(String arg0) {
                // TODO Auto-generated method stub
//              How to retrieve the access token with CloudRail
                cloudDownload.dropboxDL(dropboxCloudFilePath, "retrievedAccessToken", new DropboxDLResponseListener() {

                    @Override
                    public void onSuccess(InputStream file) {
                        // TODO Auto-generated method stub
//                      what I need to print out simple Hello work in console
                        System.out.println("Hello");
                    }

                    @Override
                    public void onProgress(double percentFinished) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void onError(CloudRailException error) {
                        // TODO Auto-generated method stub
                        error.printStackTrace();
                    }
                });
            }
        });
        cloudDownload.start_DropboxContentAPI_Auth();

    }
}

Answer 1

对于第一个问题: CloudRail实际上完成了为您提供身份验证的可能性的工作，您的代码已经非常接近了。您提供的AccessTokenCallback类在其onToken方法中接收访问令牌，作为用户成功身份验证后的参数。这意味着您必须按以下方式更改代码：

public void onToken(String arg0) {
    cloudDownload.dropboxDL(dropboxCloudFilePath, arg0, new DropboxDLResponseListener() { 
        ...

对于第二个问题，OAuth 2.0的重定向URI是身份验证服务器在身份验证成功后重定向到的URI。它通常是指向服务器上特定端点的URL。对于本地运行的简单控制台应用程序，重定向到localhost就足够了。由于您的URIRedirectListener在端口8080上设置了一个服务器来侦听这样的重定向，所以您必须将

https://localhost:8080

作为重定向URI。

为了解决您的第三点，假设您修复了另外两件事情，这应该可以正常工作。

当然，在尝试代码之前，您必须记住要为客户端标识符和机密设置有效值。