需要Google Cloud Print用户凭证 [英] Google Cloud Print User credentials required

问题描述

我正在为我的(java)Web应用程序实现google cloud打印服务，我已按照所有说明进行操作，但仍然收到需要凭据"作为回应.这是我的代码:

I am implement google cloud print service for my (java) web application,I have followed all the instruction but still getting "Credentials required" in response.Here is my code :

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.

This is a simple search hit.

推荐答案

在设置授权访问令牌时，在标头中使用承载"而不是"GoogleLogin auth =，还请注意带有承载的空间很重要

use "Bearer " instead of "GoogleLogin auth=" in header while setting Authorization access token, also note the space with bearer it is important

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