try { Class<?> julBridge = ClassUtils.forName("org.slf4j.bridge.SLF4JBridgeHandler", ClassUtils.getDefaultClassLoader()); Method removeHandlers = ReflectionUtils.findMethod(julBridge, "removeHandlersForRootLogger"); if (removeHandlers != null) { servletContext.log("Removing all previous handlers for JUL to SLF4J bridge"); ReflectionUtils.invokeMethod(removeHandlers, null); } Method install = ReflectionUtils.findMethod(julBridge, "install"); if (install != null) { servletContext.log("Installing JUL to SLF4J bridge"); ReflectionUtils.invokeMethod(install, null); } } catch (ClassNotFoundException ignored) { //Indicates the java.util.logging bridge is not in the classpath. This is not an indication of a problem. servletContext.log("JUL to SLF4J bridge is not available on the classpath"); }
关注ReflectionUtils的使用。