String myPath = request.getContextPath();//crm-yun-app
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+myPath+"/";
//http://192.168.1.1:8080/crm-yun-app/
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原文：http://9686567.blog.51cto.com/9676567/1605933