logback和MDC

Question

有没有办法将MDC中的属性记录为Integer？我的logback.xml中有这样的模式，

<pattern>
    {
    "level": "%level",
    "maz": {
    "tenant": "%mdc{tenant}",
    "login": "%mdc{login}",
    "process": "backend"
    },
    "http": {
    "host": "%mdc{host}",
    "provider": "%mdc{provider}",
    "method": "%mdc{method}",
    "request": "%mdc{request}",
    "query": "%mdc{query}",
    "size_o": "%mdc{size}",
    "status": "%mdc{status}",
    "duration_ms": "%mdc{duration}"
    },
    "message": "%message"
    }
</pattern>

我想将持续时间打印为整数而不是字符串，如果不是，有没有办法在logback.xml中读取java变量？或者是否有任何建议将此变量记录为整数？

Answer 1

mdc可以使用带有符号的默认值:- .default值支持类似%mdc{duration:-${defaultCostTime}}的表达式

<property name="defaultCostTime" value="1"/>

<pattern>
    {
    "level": "%level",
    "maz": {
    "tenant": "%mdc{tenant}",
    "login": "%mdc{login}",
    "process": "backend"
    },
    "http": {
    "host": "%mdc{host}",
    "provider": "%mdc{provider}",
    "method": "%mdc{method}",
    "request": "%mdc{request}",
    "query": "%mdc{query}",
    "size_o": "%mdc{size}",
    "status": "%mdc{status}",
    "duration_ms": %mdc{duration:-${defaultCostTime}}
    },
    "message": "%message"
    }
</pattern>