arthas04-ognl使用

1-执行静态方法

ognl ‘@java.lang.String@format(“foo %s”,“bar”)’

2 指定类静态值查看–需要配合sc-先查出类的cloassloder的hashcode

[arthas@4671]$ sc -d demo.MathGame | grep classLoaderHash
classLoaderHash 55f96302
[arthas@4671]$ ognl -c 55f96302 ‘@demo.MathGame@random’

3 用OGNL获取logger

ognl -c 1be6f5c3 ‘@com.example.demo.arthas.user.UserController@logger’

4 单独设置UserController的logger level

ognl -c 1be6f5c3 ‘@[email protected](@ch.qos.logback.classic.Level@DEBUG)’

5 全局设置logger level

ognl -c 1be6f5c3 ‘@org.slf4j.LoggerFactory@getLogger(“root”).setLevel(@ch.qos.logback.classic.Level@DEBUG)’