我将展示使用JSONLayout的log4j2,与消息中的对象相同。
例如,我的配置是:
输出结果为:
但我将把消息显示为一个类似于 JSON 对象的形式,如下所示:
cat log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</Console>
<File name="Json" fileName="/home/jeus/log/loggerjson/main.log" bufferedIO="true" advertiseURI="file://home/jeus/log/loggerjson/main1.log" advertise="true">
<JSONLayout compact="true" locationInfo="true" complete="false" eventEol="true" properties="true" propertiesAsList="true"/>
</File>
</Appenders>
<Loggers>
<Root level="info">
<AppenderRef ref="Json"/>
</Root>
</Loggers>
我的输出结果是:
cat /home/jeus/log/loggerjson/main.log
{
"timeMillis":1502359773290,
"thread":"main",
"level":"INFO",
"loggerName":"com.jeus.logger.json.loggerjson.Main",
"message":"This message is a raw",
"endOfBatch":false,
"loggerFqcn":"org.apache.logging.log4j.spi.AbstractLogger",
"contextMap":[ ],
"threadId":1,
"threadPriority":5,
"source":{
"class":"com.jeus.logger.json.loggerjson.Main",
"method":"main",
"file":"Main.java",
"line":61
}
}
我添加了一个 JSON 对象到日志中,但是消息中没有显示该 JSON 对象,而是使用 \" 字符来显示。
JSON 对象:
{"line_id": 12,"play_name":"Jeus"}
我的日志记录代码:
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
public class Main {
private static final Logger LOGGER = LogManager.getLogger(Main.class);
public static void main(String[] args) {
String message = "{\"line_id\": 12,\"play_name\": \"Jeus\"}";
LOGGER.info(message);
}
}
输出结果为:
{
"timeMillis":1502361394238,
"thread":"main",
"level":"INFO",
"loggerName":"com.jeus.logger.json.loggerjson.Main",
"message":"{\"line_id\": 12,\"play_name\": \"Jeus\"}",
"endOfBatch":false,
"loggerFqcn":"org.apache.logging.log4j.spi.AbstractLogger",
"contextMap":[
],
"threadId":1,
"threadPriority":5,
"source":{
"class":"com.jeus.logger.json.loggerjson.Main",
"method":"main",
"file":"Main.java",
"line":62
}
}
但我将把消息显示为一个类似于 JSON 对象的形式,如下所示:
"message":{"line_id": 12,"play_name":"Jeus"},