使用Java为Blogger API验证自己的Google帐户

Question

我想编写一个将本地文件发布到Google Blogger的漫游器。我将是唯一使用此应用程序的人，所以我不需要设置用户友好的身份验证例程。我花了一个晚上试图设置一些东西，而我仍然在努力处理OAuth请求。

我创建了一个新的Google应用程序项目（键入：安装的桌面应用程序）并添加了Blogger API作为范围，然后为我自己的帐户（google-credentials.json，见下文）导出了一个客户端秘密文件。

代码：

try 
{ 
    HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport(); 
    JsonFactory jsonFactory = JacksonFactory.getDefaultInstance(); 
    List<String> scopes = Arrays.asList(BloggerScopes.BLOGGER); 

    GoogleClientSecrets secrets = GoogleClientSecrets.load(jsonFactory, new InputStreamReader(Main.class.getResourceAsStream("/google-credentials.json"))); 

    GoogleCredential credential = new GoogleCredential.Builder().setJsonFactory(jsonFactory) 
                   .setTransport(httpTransport) 
                   .setClientSecrets(secrets) 
                   .build(); 

    Blogger blogger = new Blogger.Builder(httpTransport, jsonFactory, credential).setApplicationName("jd34app") 
                       .build(); 

    blogger.blogs().getByUrl("http://jd34blog.blogspot.com").execute(); 
} 
catch (Exception e) 
{ 
    e.printStackTrace(); 
} 

谷歌-credentials.json：

{ 
    "installed": { 
    "client_id": "<removed>", 
    "project_id": "<removed>", 
    "auth_uri": "https://accounts.google.com/o/oauth2/auth", 
    "token_uri": "https://accounts.google.com/o/oauth2/token", 
    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs", 
    "client_secret": "<removed>", 
    "redirect_uris": [ 
     "urn:ietf:wg:oauth:2.0:oob", 
     "http://localhost" 
    ] 
    } 
} 

响应：

com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden 
{ 
    "code" : 403, 
    "errors" : [ { 
    "domain" : "usageLimits", 
    "message" : "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup.", 
    "reason" : "dailyLimitExceededUnreg", 
    "extendedHelp" : "https://code.google.com/apis/console" 
    } ], 
    "message" : "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup." 
} 

我也试过GoogleAuthorizationCodeFlow + GoogleTokenResponse，但我不知道由于新的G，在哪里注册令牌响应oogleCredential（）。setFromTokenResponse（）似乎是不允许的。

Google发现的例子有些年了，并且导入了AuthorizationCodeInstalledApp，它不是我的依赖项com.google.apis的一个类：google-api-services-blogger：v3-rev50-1.21.0。

Answer 1

我有同样的问题，我解决这样的：

private static Credential authorize() throws Exception 
    { 
    HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport(); 
    JsonFactory jsonFactory = JacksonFactory.getDefaultInstance(); 
    List<String> scopes = Arrays.asList(BloggerScopes.BLOGGER); 

    // load client secrets 
    GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(jsonFactory, new InputStreamReader(new FileInputStream(clientId_File))); 

    // set up authorization code flow 
    GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
    httpTransport, jsonFactory, clientSecrets, scopes).build(); 

// authorize 
    return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user"); 
    } 

protected void doTest2() throws Exception 
    { 
    // Configure the Installed App OAuth2 flow. 
    Credential credential = authorize(); 

    Blogger blogger = new Blogger.Builder(httpTransport, jsonFactory, credential).setApplicationName(APP_NAME).setHttpRequestInitializer(credential) 
      .build(); 

    // The request action object. 
    GetByUrl blogGetByUrlAction = blogger.blogs().getByUrl(BLOG_URL); 

    // Configure which blog URL to look up. 
    blogGetByUrlAction.setUrl(BLOG_URL); 

    // Restrict the result content to just the data we need. 
    blogGetByUrlAction.setFields("description,name,posts/totalItems,updated"); 

    // This step sends the request to the server. 
    Blog blog = blogGetByUrlAction.execute(); 

    // Now we can navigate the response. 
    System.out.println("Name: " + blog.getName()); 
    System.out.println("Description: " + blog.getDescription()); 
    System.out.println("Post Count: " + blog.getPosts().getTotalItems()); 
    System.out.println("Last Updated: " + blog.getUpdated()); 
} 

我还需要设置以下依赖于我的pom.xml（Maven项目）

<dependency> 
    <groupId>com.google.api-client</groupId> 
    <artifactId>google-api-client</artifactId> 
    <version>1.20.0</version> 
</dependency> 
<dependency> 
    <groupId>com.google.api-client</groupId> 
    <artifactId>google-api-client-java6</artifactId> 
    <version>1.20.0</version> 
</dependency> 
<dependency> 
    <groupId>com.google.oauth-client</groupId> 
    <artifactId>google-oauth-client-jetty</artifactId> 
    <version>1.21.0</version> 
</dependency> 
<dependency> 
    <groupId>com.google.apis</groupId> 
    <artifactId>google-api-services-blogger</artifactId> 
    <version>v3-rev50-1.21.0</version> 
</dependency>