又是刚到一家新公司，到手的电脑需要配置一堆东西。下载最新版的Xcode，发现最新版Xcode需要升级系统，没办法升吧。用的无线，网速不是很好，系统升了一上午。中午开始下载Xcode，结果App Store弹出个 下载错误
然后在网上找解决办法，什么改DNS（8.8.8.8和114.114.114.114）都不行，还是出现同样的问题
没办法只好找离线下载的
Xcode 8.2.1
http://adcdownload.apple.com/Developer_Tools/Xcode_8.2.1/Xcode_8.2.1.xip
Xcode 8.2
http://adcdownload.apple.com/Developer_Tools/Xcode_8.2/Xcode_8.2.xip
Xcode 8.1
http://adcdownload.apple.com/Developer_Tools/Xcode_8.1/Xcode_8.1.xip
Xcode 8.0
http://adcdownload.apple.com/Developer_Tools/Xcode_8/Xcode_8.xip
Xcode 7
7.3.1:https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.3.1/Xcode_7.3.1.dmg
7.3: https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.3/Xcode_7.3.dmg
7.2.1:https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.2.1/Xcode_7.2.1.dmg
7.2 : https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.2/Xcode_7.2.dmg
7.1.1: https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.1.1/Xcode_7.1.1.dmg
7.1 : https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7.1/Xcode_7.1.dmg
7.0 : https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_7/Xcode_7.dmg
我把获取离线下载地址的方法贴出来：(官方地址已经变更：https://developer.apple.com/download/more/）
xcode下载地址
OS X dmg地址可以拼装出来，但是好像需要开发者账号才能下载。
比如：OS X 10.11
https://developer.apple.com/services-account/download?path=/Developer_Tools/OS_X/OS_X_Yosemite_10.11_build_15A178W/OSXUpdCombo10.11.dmg
Xcode 8.2.1
http://adcdownload.apple.com/Developer_Tools/Xcode_8.2.1/Xcode_8.2.1.xip
