java - 禁止 无权访问此提要

Question

我想通过使用 java 编程来创建一个站点。但它包含这样的错误：

Exception in thread "main" com.google.gdata.util.ServiceForbiddenException: Forbidden
Not authorized to access this feed

 at com.google.gdata.client.http.HttpGDataRequest.handleErrorResponse(HttpGDataRequest.java:561)
 at com.google.gdata.client.http.GoogleGDataRequest.handleErrorResponse(GoogleGDataRequest.java:563)
 at com.google.gdata.client.http.HttpGDataRequest.checkResponse(HttpGDataRequest.java:536)
 at com.google.gdata.client.http.HttpGDataRequest.execute(HttpGDataRequest.java:515)
 at com.google.gdata.client.http.GoogleGDataRequest.execute(GoogleGDataRequest.java:535)
 at com.google.gdata.client.Service.getFeed(Service.java:1073)
 at com.google.gdata.client.Service.getFeed(Service.java:936)
 at com.google.gdata.client.GoogleService.getFeed(GoogleService.java:631)
 at com.google.gdata.client.Service.getFeed(Service.java:955)
 at lsites.getSiteFeed(lsites.java:25)
 at lsites.main(lsites.java:40)

我想做的事？