网站建设技术外文文献,爱凡客,考试微网站开发,公司网站需要服务器吗1 日志级别
Spring Boot Actuator包括在运行时查看和配置应用程序日志级别的功能。您可以查看整个列表#xff0c;也可以查看单个记录器的配置#xff0c;该配置由显式配置的日志级别和日志框架给出的有效日志级别组成。这些级别可以是:
TRACEDEBUGINFOWARNERRORFATALOFFnu…1 日志级别
Spring Boot Actuator包括在运行时查看和配置应用程序日志级别的功能。您可以查看整个列表也可以查看单个记录器的配置该配置由显式配置的日志级别和日志框架给出的有效日志级别组成。这些级别可以是:
TRACEDEBUGINFOWARNERRORFATALOFFnull
null表示没有显式配置。
2 logger接口
2.1 列表
GET /loggers
样例: GET http://localhost:8087/actuator/loggers Authorization: Basic dGVzdDpCQUtGWCQzbA
2.2 详情
GET /loggers/{name:.*}
样例: GET http://localhost:8087/actuator/loggers/sample.actuator.SampleActuatorApplication Authorization: Basic dGVzdDpCQUtGWCQzbA
2.3 修改level
POST /loggers/{name:.*}
样例: POST http://localhost:8087/actuator/loggers/sample.actuator.SampleActuatorApplication Authorization: Basic dGVzdDpCQUtGWCQzbA Content-Type: application/json
{ “configuredLevel”: “DEBUG” }
3 分析
接口位于spring boot actuator 的LoggersMvcEndpoint LoggersMvcEndpoint-LoggersEndpoint-LoggingSystem
3.1 LoggingSystem
LoggingSystem是接口通过实现类具体处理 LoggingSystem实现类是通过LoggingSystem.get(get(ClassLoader classLoader)获得的 private static final MapString, String SYSTEMS;static {// LinkedHashMap 保证顺序性logback、log4j、javalogging的顺序加载到对应的类就返回对应的LoggingSystem的实现类MapString, String systems new LinkedHashMapString, String();systems.put(ch.qos.logback.core.Appender, org.springframework.boot.logging.logback.LogbackLoggingSystem);systems.put(org.apache.logging.log4j.core.impl.Log4jContextFactory,org.springframework.boot.logging.log4j2.Log4J2LoggingSystem);systems.put(java.util.logging.LogManager, org.springframework.boot.logging.java.JavaLoggingSystem);SYSTEMS Collections.unmodifiableMap(systems);}public static LoggingSystem get(ClassLoader classLoader) {String loggingSystem System.getProperty(SYSTEM_PROPERTY);if (StringUtils.hasLength(loggingSystem)) {if (NONE.equals(loggingSystem)) {return new NoOpLoggingSystem();}return get(classLoader, loggingSystem);}for (Map.EntryString, String entry : SYSTEMS.entrySet()) {if (ClassUtils.isPresent(entry.getKey(), classLoader)) {return get(classLoader, entry.getValue());}}throw new IllegalStateException(No suitable logging system located);}private static LoggingSystem get(ClassLoader classLoader, String loggingSystemClass) {try {Class? systemClass ClassUtils.forName(loggingSystemClass, classLoader);return (LoggingSystem) systemClass.getConstructor(ClassLoader.class).newInstance(classLoader);}catch (Exception ex) {throw new IllegalStateException(ex);}}LoggingSystem.get(get(ClassLoader classLoader)是通过LoggingApplicationListener调用的
3.2 LoggingApplicationListener
LoggingApplicationListener类图如下 在spring.factories发现LoggingApplicationListener配置通过SpringFactoryLoader加载 初始化流程 注册到spring 调用流程
4 问题
4.1 安全
http接口可能会暴漏出去存在安全问题。可以参照https://blog.csdn.net/weixin_43511928/article/details/129131251
指定management.port独立于业务端口security.user.name、security.user.password配置账号密码(密码要使用强密码)
4.2 缺少reset
日志级别重置恢复现场。
可以在setLogLevel记录被修改的名字、旧的日志级别提供/logger/reset接口setLogLevel恢复列表
4.3 只支持spring boot
4.3.1 参照对应日志框架LoggingSystem setLogLevel实现
LogbackLoggingSystem Overridepublic void setLogLevel(String loggerName, LogLevel level) {ch.qos.logback.classic.Logger logger getLogger(loggerName);if (logger ! null) {logger.setLevel(LEVELS.convertSystemToNative(level));}}Log4J2LoggingSystem Overridepublic void setLogLevel(String loggerName, LogLevel logLevel) {Level level LEVELS.convertSystemToNative(logLevel);LoggerConfig loggerConfig getLoggerConfig(loggerName);if (loggerConfig null) {loggerConfig new LoggerConfig(loggerName, level, true);getLoggerContext().getConfiguration().addLogger(loggerName, loggerConfig);}else {loggerConfig.setLevel(level);}getLoggerContext().updateLoggers();}4.3.2 使用arthas修改
参照 https://arthas.aliyun.com/doc/logger.html
