I'm working on an android app (Java Android) that needs to upload excel files to sharepoint site's library, to begin i took this sample using the graph API : https://github.com/microsoftgraph/android-java-connect-sample This sample upload a picture to the user's One Drive repository.
So, Thanks to graph explorer, I changed the query so the picture goes to my site's library and it works, but when i execute the query from my android application i get this error :403 error
My code :
public void uploadPictureToOneDrive(byte[] picture, ICallback<DriveItem> callback) {
try {
String id = new String("groupeeiffage.sharepoint.com,1f99a971-b596-4c9b-ba31-784d70c05f49,88ea0abd-a92d-412c-b047-86744a64c0ea");
mGraphServiceClient
.getSites(id)
.getDrive()
.getRoot()
.getItemWithPath("me.png")
.getContent()
.buildRequest()
.put(picture, callback);
} catch (Exception ex) {
showException(ex, "exception on upload picture to OneDrive ","Upload picture failed", "The upload picture method failed");
}
}
I know that's it's an authorization problem but i'm getting lost in the microsoft documentation. How can I allow my app using Graph API to upload files to sharepoint ?
If someone already did something similar i'd really like some help.
答案 0 :(得分：1)
作为一种解决方法，我们可以使用SharePoint REST API在Android中上传文件。
public String receiveSecurityToken() throws TransformerException, URISyntaxException {
RequestEntity<String> requestEntity =
new RequestEntity<>(buildSecurityTokenRequestEnvelope(),
HttpMethod.POST,
new URI("https://login.microsoftonline.com/extSTS.srf"));
ResponseEntity<String> responseEntity = restTemplate.exchange(requestEntity, String.class);
DOMResult result = new DOMResult();
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.transform(new StringSource(responseEntity.getBody()), result);
Document definitionDocument = (Document) result.getNode();
String securityToken = xPathExpression.evaluateAsString(definitionDocument);
if (StringUtils.isBlank(securityToken)) {
throw new SharePointAuthenticationException("Unable to authenticate: empty token");
}
return securityToken;
}
发送到门户网站的信封格式如下：
<s:Envelope
xmlns:s="http://www.w3.org/2003/05/soap-envelope"
xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
<a:Action s:mustUnderstand="1">http://schemas.xmlsoap.org/ws/2005/02/trust/RST/Issue</a:Action>
<a:ReplyTo>
<a:Address>http://www.w3.org/2005/08/addressing/anonymous</a:Address>
</a:ReplyTo>
<a:To s:mustUnderstand="1">https://login.microsoftonline.com/extSTS.srf</a:To>
<o:Security s:mustUnderstand="1"
xmlns:o="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
<o:UsernameToken>
<o:Username>[username]</o:Username>
<o:Password>[password]</o:Password>
</o:UsernameToken>
</o:Security>
</s:Header>
<s:Body>
<t:RequestSecurityToken
xmlns:t="http://schemas.xmlsoap.org/ws/2005/02/trust">
<wsp:AppliesTo
xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy">
<a:EndpointReference>
<a:Address>[SharePoint domain address]</a:Address>
</a:EndpointReference>
</wsp:AppliesTo>
<t:KeyType>http://schemas.xmlsoap.org/ws/2005/05/identity/NoProofKey</t:KeyType>
<t:RequestType>http://schemas.xmlsoap.org/ws/2005/02/trust/Issue</t:RequestType>
<t:TokenType>urn:oasis:names:tc:SAML:1.0:assertion</t:TokenType>
</t:RequestSecurityToken>
</s:Body>
</s:Envelope>
public List<String> getSignInCookies(String securityToken) throws TransformerException, URISyntaxException {
RequestEntity<String> requestEntity =
new RequestEntity<>(securityToken,
HttpMethod.POST,
new URI("[SharePoint domain address]/_forms/default.aspx?wa=wsignin1.0"));
ResponseEntity<String> responseEntity = restTemplate.exchange(requestEntity, String.class);
HttpHeaders headers = responseEntity.getHeaders();
List<String> cookies = headers.get("Set-Cookie");
if (CollectionUtils.isEmpty(cookies)) {
throw new SharePointSignInException("Unable to sign in: no cookies returned in response");
}
return cookies;
}
public String getFormDigestValue(List<String> cookies) throws IOException, URISyntaxException,
TransformerException, JSONException {
MultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
headers.add("Cookie", Joiner.on(';').join(cookies));
headers.add("Accept", "application/json;odata=verbose");
headers.add("X-ClientService-ClientTag", "SDK-JAVA");
RequestEntity<String> requestEntity = new RequestEntity<>(headers,
HttpMethod.POST, new URI("[SharePoint domain address]/_api/contextinfo"));
ResponseEntity<String> responseEntity = restTemplate.exchange(requestEntity, String.class);
JSONObject json = new JSONObject(responseEntity.getBody());
return json.getJSONObject("d")
.getJSONObject("GetContextWebInformation").getString("FormDigestValue");
}
最后，我们可以调用REST API来上传文档，如下所示。
url: http://site url/_api/web/GetFolderByServerRelativeUrl('/Folder Name')/Files/add(url='a.txt',overwrite=true)
method: POST
body: "Contents of file"
Headers: Authorization: "Bearer " + accessToken
X-RequestDigest: form digest value
content-length:length of post body
public String performHttpRequest(String path, String json, boolean isUpdate) throws Exception {
String securityToken = receiveSecurityToken();
List<String> cookies = getSignInCookies(securityToken);
String formDigestValue = getFormDigestValue(cookies);
MultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
headers.add("Cookie", Joiner.on(';').join(cookies));
headers.add("Content-type", "application/json;odata=verbose");
headers.add("X-RequestDigest", formDigestValue);
RequestEntity<String> requestEntity = new RequestEntity<>(json,
headers, HttpMethod.POST, new URI(path));
ResponseEntity<String> responseEntity =
restTemplate.exchange(requestEntity, String.class);
return responseEntity.getBody();
}
更多信息供您参考：