這是因為Eclipse是以Plug-ins的形式安裝新功能, 當要安裝的新功能需要另一些尚未安裝的功能, 這時Eclipse會根據"Available Software Sites"的設定搜索. 大多數都可以在"http://download.eclipse.org/releases/galileo"找到. 但可能"Available Software Sites"中未有加入"http://download.eclipse.org/releases/galileo", 便會出現類似的錯誤.
[假設你正在使用 Galileo!]
如何把"http://download.eclipse.org/releases/galileo"加進"Available Software Sites":
- 開啟Eclipse.
- 點擊 Help -> Install New Software...
![Install New Software... Install New Software...](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3u0jPAozeX6EW8_PkBWIvVZui3wf4iucVWHUyuihx5qHFx-wk0V3XakEk1ExcLnpik0X2M6RwrxYirx3x6WzZuNflgffslJQxM92Ro_UQS-CgXQj5lKrBda8Dom9s_zKZ3N46R4gZJAA/s400/missing_01.png)
- 點擊 "Available Software Sites"
![Install - Available Software Install - Available Software](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQwJvMU1H6wfN_HoY_ut-uf-0zY14ar-BuOAP7ClVH7Zl6CJSKjDlj4XNaSDN8RkhYVCEJ8yqm0lWDvrDAzbK6vAUyaldgQp56EwlgkfzBbxX8SuHPNeBTe4EUOqTSwqTECN8kEaKzsr4/s400/missing_02.png)
- 左邊選擇Available Software Sites, 檢查是否包括"http://download.eclipse.org/releases/galileo", 如果沒有, 點擊 Add.
![Available Software Sites Available Software Sites](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjnHkpNWcinWQHQPKoZ1jbWZsnrSVLjwtZ_u1nwFt9RhwVDyzJ1WWFuWlGH_2RhT1BTVPvZVkLdn8r8oowrVQD6O7FJcYQruVbKNxTpTCpqxyBv8_DWMGCbqzfjzazULn6V4exnEukIj0/s400/missing_03.png)
- 在"Name"輸入"galileo", 在"Location"輸入"http://download.eclipse.org/releases/galileo", 點擊 OK.
![Add Site Add Site](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0kHQFZ3fKjKF7EoUWNbQN8ANrUajXdUYjMgnYCFoQ6wSzOoFO5aGCNaL2EEJs4CcGYoQF0fgLYGU6UwInDQkoQoyTzbQDJKSUuUaraMWYq7IQTwnxFD-7kLD5O7zaDlF-xNzoQvxb610/s400/missing_04.png)
Thanks a million! It resolve my problem!
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