The connection to adb is down, and a severe error has occured.
You must restart adb and Eclipse.
Please ensure that adb is correctly located at 'E:\setups\android\android-2.1_r01-windows\tools\adb.exe' and can be executed.
解决办法：查看任务管理器，关闭所有adb.exe，任务管理器关闭豌豆荚进程，重启eclipse就好了重启eclipse即可