修正编译错误，优化部分逻辑

broker/src/main/java/com/xiaoleilu/loServer/action/admin/AdminAction.java

@@ -50,7 +50,7 @@ abstract public class AdminAction extends Action {
         Long ts;
         try {
             ts = Long.parseLong(timestamp);
-        } catch (NumberFormatException e) {
+        } catch (Exception e) {
             e.printStackTrace();
             return ErrorCode.INVALID_PARAMETER;
         }

broker/src/main/java/com/xiaoleilu/loServer/action/channel/ChannelAction.java

@@ -45,7 +45,7 @@ abstract public class ChannelAction extends Action {
         Long ts;
         try {
             ts = Long.parseLong(timestamp);
-        } catch (NumberFormatException e) {
+        } catch (Exception e) {
             e.printStackTrace();
             return ErrorCode.INVALID_PARAMETER;
         }

broker/src/main/java/com/xiaoleilu/loServer/action/robot/RobotAction.java

@@ -47,7 +47,7 @@ abstract public class RobotAction extends Action {
         Long ts;
         try {
             ts = Long.parseLong(timestamp);
-        } catch (NumberFormatException e) {
+        } catch (Exception e) {
             e.printStackTrace();
             return ErrorCode.INVALID_PARAMETER;
         }