logback 1.2.11 
slf4j-api-1.7.36.jar



import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LogTest {

	private static final Logger log = LoggerFactory.getLogger(LogTest.class);

	public static void main(String[] args) {

	    log.info("hello");
	    log.info("hello","java");
	    log.info("hello,{}","java");
	    log.info("hello,{},{}","java");

	    log.error("hello,{},{}","java",new Exception("error1"));
	    log.error("hello,{},{}","java","java8",new Exception("error2"));
	    log.error("hello,{},{}","java","java8","java21",new Exception("error3"));
            // error4 被忽略
            log.error("hello,{},{}","java",new Exception("error4"),new Exception("error5"));

	}
	
}



15:13:58.874 [main] INFO demo.test.LogTest - hello
15:13:58.877 [main] INFO demo.test.LogTest - hello
15:13:58.879 [main] INFO demo.test.LogTest - hello,java
15:13:58.879 [main] INFO demo.test.LogTest - hello,java,{}
15:13:58.880 [main] ERROR demo.test.LogTest - hello,java,{}
java.lang.Exception: error1
	at demo.test.LogTest.main(LogTest.java:17)
15:13:58.880 [main] ERROR demo.test.LogTest - hello,java,java8
java.lang.Exception: error2
	at demo.test.LogTest.main(LogTest.java:18)
15:13:58.880 [main] ERROR demo.test.LogTest - hello,java,java8
java.lang.Exception: error3
	at demo.test.LogTest.main(LogTest.java:19)
15:13:58.881 [main] ERROR demo.test.LogTest - hello,java,{}
java.lang.Exception: error5
	at demo.test.LogTest.main(LogTest.java:21)

Process finished with exit code 0