Google Mail Contacts Retrieve by Java

說明如何透過 Google Data API 取得 Gmail 的通訊錄，因需求只在通訊錄所以將重點放在通訊錄，以API的規格看來可以操作Gmail的空間應該是不少。

準備執行環境

官網文件上說明需準備以下環境及.jar檔，Servlet只有二個sample會用到，Ant是為 build samples 做準備

• JDK (Java Development Kit) version 1.5+
• Apache Ant version 1.7+
• mail.jar in Sun's JavaMail API 1.4+
• activation.jar in Sun's JavaBeansActivationFramework. This is only required for media specific APIs including Document List Data API, Picasa Web Album API, and YouTube Data API.
• servlet.jar in Sun's Servlet API version 2.3+. This is required only if executing code samples in 'sample.authsub' or 'sample.gbase.recipe' packages.

下載Google Data Client Library

• 下載Google Data Client Library的client library (gdata-src.java-1.x.x.java.zip) 和 samples file (gdata-samples.java-1.x.x.java.zip)，下載的版本為1.45.0，將二個zip file解壓縮。