Java日志管理之logback
只要引入logback的依赖,就可以在控制台使用默认格式输出:
<dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.3</version> </dependency>
在resourses中创建logback.xml配置文件,就可以配置日志:
<?xml version="1.0" encoding="UTF-8"?> <configuration> <!--定义一个向控制台输出的追加器--> <appender name="console" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <!-- %thread:线程名字 %d:产生日志时间 %level:产生日志的级别 %logger{10}:由那个类产生的日志,如果超过10个长度则进行缩写 --> <pattern>[%thread] %d %level %logger{10} - %msg%n</pattern> </encoder> </appender> <!--日志的最低输出级别为debug,输出地址为控制台--> <root level="debug"> <appender-ref ref="console"/> </root> </configuration>
如果想配置日滚动文件,可以添加如下追加器:
<!--RollingFileAppender追加器用于生成按天滚动的日志文件--> <appender name="accessHistoryLog" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!--rollingPolicy滚动策略,TimeBasedRollingPolicy按照时间进行滚动--> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!--配置日志存储路径--> <fileNamePattern>C:\java_study\project\restful\log\restful.%d.log</fileNamePattern> </rollingPolicy> <!--定义日志输出的格式--> <encoder> <pattern>[%thread] %d %level %logger{10} - %msg%n</pattern> </encoder> </appender> <!--AccessHistoryInterceptor这个类所产生的日志都会使用下面标签所产生的规则--> <!--additivity是否向控制台输出,false在只会向指定规则下输出--> <logger name="com.ikidana.restful.interceptor.AccessHistoryInterceptor" level="info" additivity="false"> <appender-ref ref="accessHistoryLog"/> </logger>
然后就可以填入信息了:
public class AccessHistoryInterceptor implements HandlerInterceptor {
//创建一个logger日志对象
private Logger logger = (Logger) LoggerFactory.getLogger(AccessHistoryInterceptor.class);
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
StringBuilder log = new StringBuilder();
log.append(request.getRemoteAddr()); //地址
log.append("|");
log.append(request.getRequestURL()); //URL
log.append("|");
log.append(request.getHeader("user-agent"));
logger.info(log.toString());
return true;
}
}