springboot通过javaconfig实现logback配置
时间:2022-07-24
本文章向大家介绍springboot通过javaconfig实现logback配置,主要内容包括其使用实例、应用技巧、基本知识点总结和需要注意事项,具有一定的参考价值,需要的朋友可以参考一下。
版本
2.2.x
创建logback javaconfig
- myapp.BasicConfigurator
public class BasicConfigurator
extends ch.qos.logback.core.spi.ContextAwareBase
implements ch.qos.logback.classic.spi.Configurator {
public BasicConfigurator() {
}
public void configure(LoggerContext lc) {
addInfo("Setting up default configuration.");
ConsoleAppender<ILoggingEvent> ca = new ConsoleAppender<ILoggingEvent>();
ca.setContext(lc);
ca.setName("console");
LayoutWrappingEncoder<ILoggingEvent> encoder = new LayoutWrappingEncoder<ILoggingEvent>();
encoder.setContext(lc);
// same as
// PatternLayout layout = new PatternLayout();
// layout.setPattern("%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n");
TTLLLayout layout = new TTLLLayout();
layout.setContext(lc);
layout.start();
encoder.setLayout(layout);
ca.setEncoder(encoder);
ca.start();
Logger rootLogger = lc.getLogger(Logger.ROOT_LOGGER_NAME);
rootLogger.addAppender(ca);
}
}
创建LoggingSystem
继承springboot默认的LogbackLoggingSystem,并修改默认日志配置实现方法
- myapp.LoggingSystem
public class LoggingSystem extends LogbackLoggingSystem {
public LoggingSystem(ClassLoader classLoader) {
super(classLoader);
}
@Override
protected void loadDefaults(LoggingInitializationContext initializationContext, LogFile logFile) {
LoggerContext context = getLoggerContext();
stopAndReset(context);
// 调用自定义的logback javaconfig
new myapp.BasicConfigurator().configure(context);
context.setPackagingDataEnabled(true);
}
private LoggerContext getLoggerContext() {
ILoggerFactory factory = StaticLoggerBinder.getSingleton().getLoggerFactory();
Assert.isInstanceOf(LoggerContext.class, factory,
String.format(
"LoggerFactory is not a Logback LoggerContext but Logback is on "
+ "the classpath. Either remove Logback or the competing "
+ "implementation (%s loaded from %s). If you are using "
+ "WebLogic you will need to add 'org.slf4j' to "
+ "prefer-application-packages in WEB-INF/weblogic.xml",
factory.getClass(), getLocation(factory)));
return (LoggerContext) factory;
}
private Object getLocation(ILoggerFactory factory) {
try {
ProtectionDomain protectionDomain = factory.getClass().getProtectionDomain();
CodeSource codeSource = protectionDomain.getCodeSource();
if (codeSource != null) {
return codeSource.getLocation();
}
} catch (SecurityException ex) {
// Unable to determine location
}
return "unknown location";
}
private void stopAndReset(LoggerContext loggerContext) {
loggerContext.stop();
loggerContext.reset();
if (isBridgeHandlerInstalled()) {
addLevelChangePropagator(loggerContext);
}
}
private boolean isBridgeHandlerInstalled() {
if (!isBridgeHandlerAvailable()) {
return false;
}
java.util.logging.Logger rootLogger = LogManager.getLogManager().getLogger("");
Handler[] handlers = rootLogger.getHandlers();
return handlers.length == 1 && handlers[0] instanceof SLF4JBridgeHandler;
}
private void addLevelChangePropagator(LoggerContext loggerContext) {
LevelChangePropagator levelChangePropagator = new LevelChangePropagator();
levelChangePropagator.setResetJUL(true);
levelChangePropagator.setContext(loggerContext);
loggerContext.addListener(levelChangePropagator);
}
}
指定日志系统实现类
@SpringBootApplication
public class MyApplication {
public static void main(String[] args) {
System.setProperty(org.springframework.boot.logging.LoggingSystem.SYSTEM_PROPERTY, myapp.LoggingSystem.class.getName());
SpringApplication.run(ManagementApiApplication.class, args);
}
}
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