[DeploymentService:290066]Error occurred while downloading files from admin server for deployment request "0". Underlying error is: "null"

weblogic 莫名无法启动：

<Apr 20, 2018 6:25:36 PM CST> <Error> <Deployer> <BEA-149205> <Failed to initialize the application 'taiping-dianshang-core-04201822' due to error weblogic.management.DeploymentException: Exception occured while downloading files.
weblogic.management.DeploymentException: Exception occured while downloading files
        at weblogic.deploy.internal.targetserver.datamanagement.AppDataUpdate.doDownload(AppDataUpdate.java:43)
        at weblogic.deploy.internal.targetserver.datamanagement.DataUpdate.download(DataUpdate.java:56)
        at weblogic.deploy.internal.targetserver.datamanagement.Data.prepareDataUpdate(Data.java:97)
        at weblogic.deploy.internal.targetserver.BasicDeployment.prepareDataUpdate(BasicDeployment.java:704)
        at weblogic.deploy.internal.targetserver.BasicDeployment.stageFilesForStatic(BasicDeployment.java:747)
        Truncated. see log file for complete stacktrace
Caused By: java.io.IOException: [DeploymentService:290066]Error occurred while downloading files from admin server for deployment request "0". Underlying error is: "null"
        at weblogic.deploy.service.datatransferhandlers.HttpDataTransferHandler.getDataAsStream(HttpDataTransferHandler.java:86)
        at weblogic.deploy.service.datatransferhandlers.DataHandlerManager$RemoteDataTransferHandler.getDataAsStream(DataHandlerManager.java:165)
        at weblogic.deploy.internal.targetserver.datamanagement.AppDataUpdate.doDownload(AppDataUpdate.java:39)
        at weblogic.deploy.internal.targetserver.datamanagement.DataUpdate.download(DataUpdate.java:56)
        at weblogic.deploy.internal.targetserver.datamanagement.Data.prepareDataUpdate(Data.java:97)
        Truncated. see log file for complete stacktrace
> 

解决办法：

1. 删除应用缓存
/domain/servers/应用1/tmp
/domain/servers/应用1/cache
2. 杀掉weblogic 7001 端口的主进程
3. 删除 edit.lok并重启