SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”

在使用logback 的时候  使用的实例

java代码：

package com.eastcom.my.study.first.logback;

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

public class LogbackDemo {

	private static Logger logger = LoggerFactory.getLogger(com.eastcom.my.study.first.logback.LogbackDemo.class);

	public static void main(String[] args) {

		logger.trace("======trace");
		logger.debug("======debug");
		logger.info("======info");
		logger.warn("======warn");
		logger.error("======error");

		String name = "Aub";
		String message = "3Q";
		String[] fruits = { "apple", "banana" };

		// logback提供的可以使用变量的打印方式，结果为"Hello,Aub!"
		logger.info("Hello,{}!", name);
		// 可以有多个参数,结果为“Hello,Aub! 3Q!”
		logger.info("Hello,{}!   {}!", name, message);
		// 可以传入一个数组，结果为"Fruit: apple,banana"
		logger.info("Fruit:  {},{}", fruits);

		System.out.println("hello world ");

	}

}

引入的jar包

        

    ch.qos.logback
    logback-classic
    1.2.3




    ch.qos.logback
    logback-core
    1.2.3

    


    org.slf4j
    slf4j-api
    1.7.25

总是不能正常输出日志：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
hello world 

报错 

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".

或者在网上找到了答案：链接  https://stackoverflow.com/questions/7421612/slf4j-failed-to-load-class-org-slf4j-impl-staticloggerbinder

添加了依赖包

    org.slf4j
    slf4j-simple
    1.7.25

需要去掉  test

正常情况下输出：

  
      
    
          %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
    
  

  
      
  

over

如果加入logback.xml 文件

  
      
    
          %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
    
  

  
      
  

其配置文件的路径在src/logback.xml

在代码中需要从新加载配置文件

java代码

package com.eastcom.my.study.first.logback;

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

import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.joran.spi.JoranException;
import ch.qos.logback.core.util.StatusPrinter;

public class LogbackDemo {

	private static Logger logger = LoggerFactory.getLogger(com.eastcom.my.study.first.logback.LogbackDemo.class);

	public static void main(String[] args) {

		LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
		JoranConfigurator configurator = new JoranConfigurator();
		configurator.setContext(lc);
		lc.reset();
		try {
			configurator.doConfigure("D:/newworkspace/my-study-first/src/logback.xml");
		} catch (JoranException e) {
			e.printStackTrace();
		}
		StatusPrinter.printInCaseOfErrorsOrWarnings(lc);

		System.out.println("===================");
		logger.debug("Hello {}", "debug message");

		logger.trace("======trace");
		logger.debug("======debug");
		logger.info("======info");
		logger.warn("======warn");
		logger.error("======error");

		String name = "Aub";
		String message = "3Q";
		String[] fruits = { "apple", "banana" };

		// logback提供的可以使用变量的打印方式，结果为"Hello,Aub!"
		logger.info("Hello,{}!", name);
		// 可以有多个参数,结果为“Hello,Aub! 3Q!”
		logger.info("Hello,{}!   {}!", name, message);
		// 可以传入一个数组，结果为"Fruit: apple,banana"
		logger.info("Fruit:  {},{}", fruits);

		System.out.println("hello world ");

	}

}

可以看到只获得warn的日志输出

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/D:/softinstall/java/apache-maven-3/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/softinstall/java/apache-maven-3/repository/org/slf4j/slf4j-simple/1.7.25/slf4j-simple-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
===================
13:34:46.762 [main] WARN  c.e.m.s.first.logback.LogbackDemo - ======warn
13:34:46.773 [main] ERROR c.e.m.s.first.logback.LogbackDemo - ======error
hello world 

over 

在Linux下打包运行  指定配置文件的位置，可也使用  -Dlogback.configurationFile=/data/myzjodc-test/conf/logback/logback.xml 

java -Dlogback.configurationFile=/data/myzjodc-test/conf/logback/logback.xml -cp .:./my-study-first-0.0.1-SNAPSHOT-jar-with-dependencies.jar  com.eastcom.my.study.first.logback.LogbackDemo2