Dubbo 支持通过 QoS 命令实时查看当前的配置信息以及可信/不可信类列表。目前共支持两个命令：serializeCheckStatus 查看当前配置信息，serializeWarnedClasses 查看实时的告警列表。
serializeCheckStatus 命令通过控制台直接访问：
> telnet 127.0.0.1 22222
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
___ __ __ ___ ___ ____
/ _ \ / / / // _ ) / _ ) / __ \
/ // // /_/ // _ |/ _ |/ /_/ /
/____/ \____//____//____/ \____/
dubbo>serializeCheckStatus
CheckStatus: WARN
CheckSerializable: true
AllowedPrefix:
...
DisAllowedPrefix:
...
dubbo>
通过 http 请求 json 格式结果：
> curl http://127.0.0.1:22222/serializeCheckStatus
{"checkStatus":"WARN","allowedPrefix":[...],"checkSerializable":true,"disAllowedPrefix":[...]}
serializeWarnedClasses 命令通过控制台直接访问：
> telnet 127.0.0.1 22222
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
___ __ __ ___ ___ ____
/ _ \ / / / // _ ) / _ ) / __ \
/ // // /_/ // _ |/ _ |/ /_/ /
/____/ \____//____//____/ \____/
dubbo>serializeWarnedClasses
WarnedClasses:
io.dubbo.test.NotSerializable
io.dubbo.test2.NotSerializable
io.dubbo.test2.OthersSerializable
org.apache.dubbo.samples.NotSerializable
dubbo>
通过 http 请求 json 格式结果：
> curl http://127.0.0.1:22222/serializeWarnedClasses
{"warnedClasses":["io.dubbo.test2.NotSerializable","org.apache.dubbo.samples.NotSerializable","io.dubbo.test.NotSerializable","io.dubbo.test2.OthersSerializable"]}