eclipse运行android项目出现"The connection to adb is down, and a severe error has occured."的问题

1. 问题描述：在eclipse运行android项目时出现以下信息：
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   The connection to adb is down, and a severe error has occured.
   You must restart adb and Eclipse.
2. 配置adb环境变量：http://jingyan.baidu.com/article/17bd8e52f514d985ab2bb800.html
3. cmd打开DOS窗口：
   查看adb状态：
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   adb get-state
   杀掉adb服务：
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   adb kill-server
   开启adb服务：
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   adb start-server
   信息如下：
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• daemon not running. starting it now on port 5037 *
• daemon started successfully *

4. 重启eclipse， 运行你的android项目， 如果没出意外的话， 问题应该可以解决了。OK， Enjoy it!!!