规则配置超时时间必填bug

[liyong1028826685]

Caused by: java.lang.NumberFormatException: empty String
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1842)
at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110)
at java.lang.Double.parseDouble(Double.java:538)
at com.google.gson.stream.JsonReader.nextInt(JsonReader.java:1193)
at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:243)

[yu199195]

这里必须填的，前期这么没有验证