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我計劃有一個服務器程序獲取我的Dropbox帳戶的訪問令牌，並傳遞給他人Dropbox的訪問令牌上傳到我的文件夾
客戶端程序uplaod我的Dropbox文件夾中。客戶端不需要DB帳戶或登錄，並且能夠將文件發送到我的DB文件夾（因此不使用OAuth ...）。類似的東西來：
，但沒有用戶上傳到服務器的第一個，即，一旦用戶獲得訪問令牌，它們直接上傳到數據庫。
我試着使用Apache的HttpClient 4.3模擬瀏覽器來執行獲得請求令牌，發送登錄，信息獲得存取權限的道理，但得到通過後的文件貼在上傳到表單。錯誤是HTTP 400錯誤的請求......
executing request:GET https://www.dropbox.com/login HTTP/1.1
----------------------------------------
HTTP/1.1 200 OK
Request Token: moiejtzdLqTA_0sh3gQyNZAI
executing request:POST https://www.dropbox.com/login HTTP/1.1
----------------------------------------
HTTP/1.1 200 OK
Access Token: 5Ot52QKDbDPSsL1ApU4MIapJ
executing request:POST https://dl-web.dropbox.com/upload?
name=sample.jpg&dest=upload&cookie_t=5Ot52QKDbDP....SsJ&t=5Ot5...apJ HTTP/1.1
----------------------------------------
HTTP/1.1 400 Bad Request
我用火狐LiveHttpHeader捕捉標題爲我做的登錄和上傳文件，並看到了文件上傳其實就是做這個職位（並在代碼反映）：
https://dl-web.dropbox.com/chunked_upload?
name=tmp1.jpg
&chunk=0
&chunks=1
&bjar=W3sic2Vzc1..............Q%253D%253D
&blid=AAAw4tn................2cDxA
&cookie_t=32yq........nw6c34o
&dest=
&t=32yqVof........c34o
&reported_total_size=5611
&upload_id=1BKGRRP5TpCEjcWSu5tmpQ
&offset=0
所以apparrently我錯過了一些PARAM但無法弄清楚什麼。訪問令牌似乎是有效的，因爲我可以在從httpclinet發佈到https://www.dropbox.com/home的回報中看到我的帳戶信息，但上傳根本無法工作。任何人都有類似的經驗，並獲得HTTP 400錯誤？ .... 非常感謝 ！
某些代碼如下：
構造和主（）：
// constructor ...
public HttpClientExample() {
gcookies = new BasicCookieStore();
globalConfig = RequestConfig.custom()
.setCookieSpec(CookieSpecs.BEST_MATCH)
.build();
// Create local HTTP context
ghttpContext = HttpClientContext.create();
ghttpContext.setCookieStore(gcookies);
//
redirectStrategy = new LaxRedirectStrategy(); // for http redirect ...
httpclient = HttpClients.custom()
.setDefaultRequestConfig(this.globalConfig)
.setDefaultCookieStore(this.gcookies)
.setRedirectStrategy(redirectStrategy)
.build();
} // constructor ...
public static void main(String[] args) throws Exception {
HttpClientExample myhttp = new HttpClientExample();
try {
this.localConfig = RequestConfig.copy(this.globalConfig)
.setCookieSpec(CookieSpecs.BROWSER_COMPATIBILITY)
.build();
String requestToken = this.getRequestToken(httpclient, loginurl);
theAccessToken = this.postForAccessToken(requestToken, loginurl);
String localFileTopassIn = this.localPath ;
this.postToUpload(httpclient, this.theAccessToken, localFileTopassIn , this.dropboxFolderOnlyName);
}
}
獲取請求令牌：
private String getRequestToken(HttpClient client, String theURL) throws Exception {
HttpGet httpget = new HttpGet(theURL);
httpget.setConfig(localConfig);
httpget.setHeader("Connection", "keep-alive");
System.out.println("\nexecuting request:" + httpget.getRequestLine());
// Create a custom response handler
ResponseHandler responseHandler = new ResponseHandler() {
public String handleResponse(final HttpResponse response)
throws ClientProtocolException, IOException {
int status = response.getStatusLine().getStatusCode();
if (status >= 200) { // && status cookies = gcookies.getCookies();
for (Cookie aCookie: cookies) {
String cookieName = aCookie.getName();
if (!(cookieName.lastIndexOf(gvcString) == -1)) {
gvc = aCookie.getValue();
} else if (!(cookieName.lastIndexOf(tString) == -1)) {
requestToken = aCookie.getValue();
}
}
System.out.println("Request Token: " + requestToken);
return requestToken;
}
postForAccessToken：
private String postForAccessToken(HttpClient client, String requestToken, String theURL) throws Exception{
/*
* Send a post together with request token and my login to get accessToken ...
*/
HttpPost httppost = new HttpPost(theURL); // loginurl);
httppost.setConfig(localConfig);
ghttpContext.setCookieStore(gcookies);
List params = new LinkedList();
params.add(new BasicNameValuePair("login_email", myemail));
params.add(new BasicNameValuePair("login_password", mypasswd));
params.add(new BasicNameValuePair("t", requestToken));
HttpEntity postentity = new UrlEncodedFormEntity(params);
httppost.setEntity(postentity);
System.out.println("\nexecuting request:" + httppost.getRequestLine());
// Create a custom response handler
ResponseHandler responseHandler = new ResponseHandler() {
public String handleResponse(final HttpResponse response)
throws ClientProtocolException, IOException {
int status = response.getStatusLine().getStatusCode();
if (status >= 200) { // && status cookies = gcookies.getCookies();
for (Cookie aCookie: cookies) {
String cookieName = aCookie.getName();
if (!(cookieName.lastIndexOf(tString) == -1)) {
theAccessToken = aCookie.getValue();
}
}
System.out.println("Access Token: " + theAccessToken);
return theAccessToken;
}
postToUpload：
private String postToUpload(HttpClient client, String accessToken, String localFileInfo, String destPath) throws Exception{
String bjarString = "bjar";
String blidString = "blid";
String bjar=null;
String blid=null;
List cookies = gcookies.getCookies();
for (Cookie aCookie: cookies) {
String cookieName = aCookie.getName();
if (!(cookieName.lastIndexOf(bjarString) == -1)) {
bjar = aCookie.getValue();
} else if (!(cookieName.lastIndexOf(blidString) == -1)) {
blid = aCookie.getValue();
}
}
String[] fileNameArry = localFileInfo.split("(\\\\|/)");
String filename = fileNameArry[fileNameArry.length - 1]; // get the last part ...
URI uri = new URIBuilder()
.setScheme("https")
.setHost("dl-web.dropbox.com")
.setPath("/upload")
.setParameter("name", filename)
.setParameter("dest", destPath)
.setParameter("cookie_t", accessToken)
.setParameter("t", accessToken)
.build();
HttpPost httppost = new HttpPost(uri);
httppost.setConfig(localConfig);
ghttpContext.setCookieStore(gcookies);
FileBody bin = new FileBody(new File(localFileInfo));
StringBody comment = new StringBody("A binary file of some kind", ContentType.DEFAULT_BINARY);
HttpEntity reqEntity = MultipartEntityBuilder.create()
.addPart("bin", bin)
.addPart("comment", comment)
.build();
httppost.setEntity(reqEntity);
// add header
httppost.setHeader("Host", "www.dropbox.com");
httppost.setHeader("User-Agent", USER_AGENT);
httppost.setHeader("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
httppost.setHeader("Connection", "keep-alive");
httppost.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
httppost.setHeader("Pragma", "no-cache");
httppost.setHeader("Cache-Control", "no-cache");
// add entity
System.out.println("\nexecuting request:" + httppost.getRequestLine());
// Create a custom response handler
ResponseHandler responseHandler = new ResponseHandler() {
public String handleResponse(final HttpResponse response)
throws ClientProtocolException, IOException {
int status = response.getStatusLine().getStatusCode();
if (status >= 200) { // && status
關於標題授權的部分：承載者對於GET請求也非常有用。 Dropbox在他們的文檔中沒有提到這一點。 –
這只是標準的OAuth 2.（任何使用OAuth 2的API的工作原理都是一樣的。）但是我們會盡力在指出這一點的文檔中做得更好。 – smarx