SpringBoot logback日誌存入mongodb

首先繼承 logback 中的 ch.qos.logback.core.UnsynchronizedAppenderBase 類

public class MongoDBAppender extends UnsynchronizedAppenderBase<ILoggingEvent> {
    @Override
    protected void append(ILoggingEvent eventObject) {
        MongoTemplate mongoTemplate = ApplicationContextProvider.getBean(MongoTemplate.class);
        if (mongoTemplate != null) {
            final BasicDBObject doc = new BasicDBObject();
            doc.append("level", eventObject.getLevel().toString());
            doc.append("logger", eventObject.getLoggerName());
            doc.append("thread", eventObject.getThreadName());
            doc.append("message", eventObject.getFormattedMessage());
            mongoTemplate.insert(doc, "log");
        }
    }

}

這裏呢我使用了spring-data-mongodb 不喜歡的朋友可以自己使用 mongo-java-driver 這裏的 ApplicationContextProvider 代碼如下

@Component
public class ApplicationContextProvider implements ApplicationContextAware {
    private static ApplicationContext context;

    public static ApplicationContext getApplicationContext() {
        return context;
    }

    @Override
    public void setApplicationContext(ApplicationContext ac)
            throws BeansException {
        context = ac;
    }

    public static <T> T getBean(Class<T> tClass) {
        return context.getBean(tClass);
    }

    public static <T> T getBean(String name, Class<T> tClass) {
        return context.getBean(name, tClass);
    }
}

在logback-spring.xml 中加入如下配置

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!-- 文件輸出格式 -->
    <property name="PATTERN" value="%-1(%d{yyyy-MM-dd HH:mm:ss.SSS}) |-%-5level [%thread] %c [%L] -| %msg%n"/>

    <appender name="MONGO" class="com.fulinlin.log.MongoDBAppender"/>

    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>${PATTERN}</pattern>
        </encoder>
    </appender>

    <!-- 開發環境 -->
    <springProfile name="dev">
        <logger name="com.fulinlin" level="debug">
            <appender-ref ref="MONGO"/>
        </logger>
        <root level="info">
            <appender-ref ref="CONSOLE"/>
        </root>
    </springProfile>
    
</configuration>

然後就可以了 就是這麼簡單