如何将slf4j-over-logback日志编写为JSON

Question

我的代码中有以下日志记录语句。

import org.slf4j.Logger;

public class MySampleClass {

private static final Logger logger = LoggerFactory.getLogger(MySmapleClass.class);

    public void mySampleMethod(List<String> userID) {
        logger.debug("userRuntimeId =" + userId);
        .
        .
        .
        Business Logic
        .
        .

    }
}

这将打印我的日志,如下所示,

2019-02-25 16:27:45，460调试[fileTaskExecutor-2][A.abc.MySampleApp.Handlers.UserRecordHandler][MY_SAMPLE_APP][Vijay-20190225-162738.Trigger][]userRuntimeId=3051AA39-2E0A-11E9-Bee3-E7388CJG5LE0

我希望示例JSON格式：

{
timestamp="2019-02-25 16:27:45,460" ,
level="DEBUG",
triggerName="fileTaskExecutor-2",
className="a.abc.mySampleApp.handlers.userRecordHandler",
appName="MY_SAMPLE_APP",
userRuntimeId="3051aa39-2e0a-11e9-bee3-e7388cjg5le0"
}

Answer 1

您可以在任何日志添加器中使用logback-contrib的JSONLayout。例如：

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <layout class="ch.qos.logback.contrib.json.classic.JsonLayout">
        <jsonFormatter class="ch.qos.logback.contrib.jackson.JacksonJsonFormatter">
            <prettyPrint>false</prettyPrint>
        </jsonFormatter>
        <timestampFormat>yyyy-MM-dd' 'HH:mm:ss.SSS</timestampFormat>
        <appendLineSeparator>true</appendLineSeparator>
        <includeContextName>false</includeContextName>
    </layout>
</appender>

使用该配置，以下日志调用...

logger.info("hello!");

...会发出：

{
  "timestamp" : "2019-03-01 08:08:32.413",
  "level" : "INFO",
  "thread" : "main",
  "logger" : "org.glytching.sandbox.logback.LogbackTest",
  "message" : "hello!"
}

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