要求Google云打印用户凭据

Question

我正在为我的(java) web应用程序实现google服务，我遵循了所有的指令，但在response.Here中仍然获得“所需的凭据”是我的代码：

public static void main(String[] args) {
    HttpPost printPost = new HttpPost(
            "https://www.google.com/cloudprint/search?output=json");
    printPost.setHeader("Authorization",
            "GoogleLogin auth=" +getAccessToken());
    printPost.setHeader("scope",
            "https://www.googleapis.com/auth/cloudprint");
    printPost.setHeader("X-CloudPrint-Proxy", "printingTest");
    DefaultHttpClient httpclient = new DefaultHttpClient();
    try {
        HttpResponse printResponse = httpclient.execute(printPost);
        System.out.println(printResponse.getStatusLine());
    } catch (ClientProtocolException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
public static String getAccessToken() {

    Credential credential = new GoogleCredential.Builder()
            .setTransport(new NetHttpTransport())
            .setJsonFactory(new JacksonFactory())
            .setClientSecrets(
                    "client_id",
                    "client_secret").build();
    try {
        credential
                .setRefreshToken("refresh_token");
        credential.refreshToken();
        return credential.getAccessToken();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;

}

这是一个简单的搜索命中。

Answer 1

在设置授权访问令牌时，在头中使用"GoogleLogin auth=“而不是”auth=“，还请注意带承载的空格是很重要的