OAuth的2的Mendeley与Java [英] Oauth 2 in Mendeley with Java

问题描述

我需要创建的Mendeley在Java的应用程序。但我与的oauth2的conexion问题。

I need to create an application with Mendeley in Java. But I have problems with the oauth2's conexion.

我使用Apache奥尔图，但如果你知道另外一个更好的选择，告诉我吧。

I use Apache Oltu, but if you know another better alternative, told me please.

我有这样的：

OAuthClientRequest request = OAuthClientRequest
                .tokenLocation("https://api-oauth2.mendeley.com/oauth/token")
                .setGrantType(GrantType.AUTHORIZATION_CODE)
                .setClientId(CLIENT_ID)
                .setClientSecret(CLIENTE_SECRET)
                .setRedirectURI(REDIRECT_URI)
                .setCode("code")
                .setScope("all")
                .buildQueryMessage();

    OAuthClient oAuthClient = new OAuthClient(new URLConnectionClient());

    GitHubTokenResponse oAuthResponse = oAuthClient.accessToken(request, GitHubTokenResponse.class);

    String accessToken = oAuthResponse.getAccessToken();
    String expiresIn = oAuthResponse.getExpiresIn().toString();

    System.out.println("ACCESS TOKEN: " + accessToken);
    System.out.println("EXPIRES IN  : " + expiresIn);

但是这会产生此异常：

but this produces this exception:

Exception in thread "main" OAuthProblemException{error='invalid_request', description='Missing parameters: access_token', uri='null', state='null', scope='null', redirectUri='null', responseStatus=0, parameters={}}
    at org.apache.oltu.oauth2.common.exception.OAuthProblemException.error(OAuthProblemException.java:59).......

你知道吗？我再说一遍，如果你知道另一种选择或解决方案请帮助我。

Any idea? I repeat, if you know another alternative or solution help me please.

非常感谢。

推荐答案

有在在我们网站上的一些文件http://apidocs.mendeley.com/home/authentication

我扔在一起使用Apache奥尔图库的Apache HTTP客户端库更完整的例子。这将使用匿名访问令牌。

I've thrown together a more complete example using the Apache Oltu library with Apache HTTP Client library. This uses the anonymous access token.

的修改的

OAuthClientRequest request = OAuthClientRequest
            .tokenLocation(TOKEN_URL)
            .setClientId(TRUSTED_CLIENT_ID)
            .setClientSecret(TRUSTED_SECRET)
            .setGrantType(GrantType.CLIENT_CREDENTIALS)
            .setScope("all")
            .buildBodyMessage();

    OAuthClient oAuthClient = new OAuthClient(new URLConnectionClient());
    OAuthJSONAccessTokenResponse tokenResponse = oAuthClient.accessToken(
            request, OAuthJSONAccessTokenResponse.class);

    HttpGet httpGet = new HttpGet(CATALOG_URL);
    httpGet.setHeader("Authorization", "Bearer " + tokenResponse.getAccessToken());
    HttpResponse httpResponse = apacheHttpClient.execute(httpGet);

    assertThat(httpResponse.getStatusLine().getStatusCode()).isEqualTo(200);

    String responseAsString = EntityUtils.toString(httpResponse.getEntity());

    ObjectMapper mapper = new ObjectMapper();
    Document document = mapper.readValue(responseAsString, Document.class);
    assertThat(document.getTitle()).isEqualTo("Identifying and recording user actions to enable automatic online assessment");

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