Logback是由创始人设计的又一个开源日志组件。logback当前分成三个模块:logback-core,logback- classic和logback-access。logback-core是其它两个模块的基础模块。logback-classic是log4j的一个 改良版本。此外logback-classic完整实现SLF4J API使你可以很方便地更换成其它日志系统如log4j或JDK14 Logging。logback-access访问模块与Servlet容器集成提供通过Http来访问日志的功能。
logback.xml配置如下:
- <?xml version="1.0" encoding="UTF-8"?>
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- <!-- 属性描述 scan:性设置为true时,配置文件如果发生改变,将会被重新加载,默认值为true scanPeriod:设置监测配置文件是否有修改的时间间隔,如果没有给出时间单位,默认单位是毫秒。当scan为true时,此属性生效。默认的时间间隔为1分钟。
- debug:当此属性设置为true时,将打印出logback内部日志信息,实时查看logback运行状态。默认值为false。 -->
- <configuration scan="true" scanPeriod="60 seconds" debug="false">
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- <property name="log_dir" value="/logs/ev_cmdb" />
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- <property name="maxHistory" value="30"/>
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- <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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- <encoder>
- <pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger -%msg%n</pattern>
- </encoder>
- </appender>
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- <appender name="ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
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- <filter class="ch.qos.logback.classic.filter.LevelFilter">
- <level>ERROR</level>
- <onMatch>ACCEPT</onMatch>
- <onMismatch>DENY</onMismatch>
- </filter>
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- <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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- <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/error-log.log</fileNamePattern>
- <!-- 可选节点,控制保留的归档文件的最大数量,超出数量就删除旧文件假设设置每个月滚动,且<maxHistory>是6,
- 则只保存最近6个月的文件,删除之前的旧文件。注意,删除旧文件是,那些为了归档而创建的目录也会被删除-->
- <maxHistory>${maxHistory}</maxHistory>
- </rollingPolicy>
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- <!-- 按照固定窗口模式生成日志文件,当文件大于20MB时,生成新的日志文件。窗口大小是1到3,当保存了3个归档文件后,将覆盖最早的日志。
- <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
- <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/.log.zip</fileNamePattern>
- <minIndex>1</minIndex>
- <maxIndex>3</maxIndex>
- </rollingPolicy> -->
- <!-- 查看当前活动文件的大小,如果超过指定大小会告知RollingFileAppender 触发当前活动文件滚动
- <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
- <maxFileSize>5MB</maxFileSize>
- </triggeringPolicy> -->
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- <encoder>
- <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
- </encoder>
- </appender>
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- <appender name="WARN" class="ch.qos.logback.core.rolling.RollingFileAppender">
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- <filter class="ch.qos.logback.classic.filter.LevelFilter">
- <level>WARN</level>
- <onMatch>ACCEPT</onMatch>
- <onMismatch>DENY</onMismatch>
- </filter>
- <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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- <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/warn-log.log
- </fileNamePattern>
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- <maxHistory>${maxHistory}</maxHistory>
- </rollingPolicy>
- <encoder>
- <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
- </encoder>
- </appender>
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- <appender name="INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
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- <filter class="ch.qos.logback.classic.filter.LevelFilter">
- <level>INFO</level>
- <onMatch>ACCEPT</onMatch>
- <onMismatch>DENY</onMismatch>
- </filter>
- <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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- <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/info-log.log
- </fileNamePattern>
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- <maxHistory>${maxHistory}</maxHistory>
- </rollingPolicy>
- <encoder>
- <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
- </encoder>
- </appender>
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- <appender name="DEBUG" class="ch.qos.logback.core.rolling.RollingFileAppender">
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- <filter class="ch.qos.logback.classic.filter.LevelFilter">
- <level>DEBUG</level>
- <onMatch>ACCEPT</onMatch>
- <onMismatch>DENY</onMismatch>
- </filter>
- <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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- <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/debug-log.log
- </fileNamePattern>
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- <maxHistory>${maxHistory}</maxHistory>
- </rollingPolicy>
- <encoder>
- <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
- </encoder>
- </appender>
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- <appender name="TRACE" class="ch.qos.logback.core.rolling.RollingFileAppender">
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- <filter class="ch.qos.logback.classic.filter.LevelFilter">
- <level>TRACE</level>
- <onMatch>ACCEPT</onMatch>
- <onMismatch>DENY</onMismatch>
- </filter>
- <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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- <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/trace-log.log
- </fileNamePattern>
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- <maxHistory>${maxHistory}</maxHistory>
- </rollingPolicy>
- <encoder>
- <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
- </encoder>
- </appender>
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- <logger name="java.sql.PreparedStatement" value="DEBUG" />
- <logger name="java.sql.Connection" value="DEBUG" />
- <logger name="java.sql.Statement" value="DEBUG" />
- <logger name="com.ibatis" value="DEBUG" />
- <logger name="com.ibatis.common.jdbc.SimpleDataSource" value="DEBUG" />
- <logger name="com.ibatis.common.jdbc.ScriptRunner" level="DEBUG"/>
- <logger name="com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate" value="DEBUG" />
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- <root level="debug">
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- <appender-ref ref="STDOUT" />
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- <appender-ref ref="ERROR" />
- <appender-ref ref="INFO" />
- <appender-ref ref="WARN" />
- <appender-ref ref="DEBUG" />
- <appender-ref ref="TRACE" />
- </root>
- </configuration>
LogUtils.
- package log.base;
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- package com.ghca.easyview.server.common.utils;
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- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
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- public class LogUtils {
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- public static final Logger log = LoggerFactory.getLogger(LogUtils.class);
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- public static void logInfo(String message) {
- StringBuilder s = new StringBuilder();
- s.append((message));
- log.info(s.toString());
- }
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- public static void logInfo(String message, Throwable e) {
- StringBuilder s = new StringBuilder();
- s.append(("exception : -->>"));
- s.append((message));
- log.info(s.toString(), e);
- }
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- public static void logWarn(String message) {
- StringBuilder s = new StringBuilder();
- s.append((message));
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- log.warn(s.toString());
- }
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- public static void logWarn(String message, Throwable e) {
- StringBuilder s = new StringBuilder();
- s.append(("exception : -->>"));
- s.append((message));
- log.warn(s.toString(), e);
- }
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- public static void logDebug(String message) {
- StringBuilder s = new StringBuilder();
- s.append((message));
- log.debug(s.toString());
- }
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- public static void logDebug(String message, Throwable e) {
- StringBuilder s = new StringBuilder();
- s.append(("exception : -->>"));
- s.append((message));
- log.debug(s.toString(), e);
- }
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- public static void logError(String message) {
- StringBuilder s = new StringBuilder();
- s.append(message);
- log.error(s.toString());
- }
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- public static void logError(String message, Throwable e) {
- StringBuilder s = new StringBuilder();
- s.append(("exception : -->>"));
- s.append((message));
- log.error(s.toString(), e);
- }
- }
TEST
- package com.ghca.easyview.server.log.test;
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- import java.io.File;
- import java.io.IOException;
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- import org.junit.Before;
- import org.junit.Test;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
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- import ch.qos.logback.core.joran.spi.JoranException;
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- import com.ghca.easyview.server.common.utils.LogBackConfigLoader;
- import com.ghca.easyview.server.common.utils.LogUtils;
- import com.ghca.easyview.server.config.ServerConfig;
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- public class TestLog {
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- @Before
- public void before() {
- File file = new File(System.getProperty("user.dir"));
- String path = file.getPath() + File.separator + "conf";
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- ServerConfig.config_path = path;
- try {
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- LogBackConfigLoader.load(ServerConfig
- .loadLogBackConfPath("logback.xml"));
- } catch (IOException | JoranException e) {
- e.printStackTrace();
- }
- }
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- @Test
- public void test1() {
- LogUtils.logInfo("INFO ~");
- LogUtils.logDebug("DEBUG ~");
- LogUtils.logError("ERROR~");
- LogUtils.logWarn("WARN ~");
- }
- }
根据日志级别输出不等的日志信息,