修复设备没连接时缺省状态，从在线改为离线

git-svn-id: https://202.107.226.68:8443/svn/Services/ResistanceMonitor@51 a05970a1-87b9-9d4f-9ee5-fa77e2ec115b

3.Java/src/com/company/controller/DeviceInfoController.java

@@ -245,7 +245,7 @@ public class DeviceInfoController {
                             // dif返回millisecond
                             if (Objects.isNull(previous_timestamp))
                             {
-                                r.setIs_alive(1);
+                                r.setIs_alive(0);
                             }
                             else {
                                 long dif = (new Date()).getTime() - previous_timestamp.getTime();
@@ -373,7 +373,7 @@ public class DeviceInfoController {
                         // dif返回millisecond
                         if (Objects.isNull(previous_timestamp))
                         {
-                            r.setIs_alive(1);
+                            r.setIs_alive(0);
                         }
                         else {
                             long dif = (new Date()).getTime() - previous_timestamp.getTime();