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

See original GitHub issue

created a minimum stand alone:

public class App 
{
    public static void main( String[] args )
    {
        System.out.println( "Hello World!" );
        WireMockServer wireMockServer = new WireMockServer(wireMockConfig().port(8123));
        wireMockServer.start();
    }
}

and get a warning:

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.

I needed to add an extra Maven dependency to remove the warnings:

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>1.6.4</version>
    </dependency>

Issue Analytics

State:
Created 8 years ago
Comments:5

Top GitHub Comments

5reactions

bcalmaccommented, Dec 19, 2017

How about the case of running WireMock in the terminal with java -jar wiremock-standalone.jar? Shouldn’t console logging be enabled?

$ java -jar ~/tools/wiremock-standalone-2.12.0.jar --port 9999
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.
 /$$      /$$ /$$                     /$$      /$$                     /$$
| $$  /$ | $$|__/                    | $$$    /$$$                    | $$
| $$ /$$$| $$ /$$  /$$$$$$   /$$$$$$ | $$$$  /$$$$  /$$$$$$   /$$$$$$$| $$   /$$
| $$/$$ $$ $$| $$ /$$__  $$ /$$__  $$| $$ $$/$$ $$ /$$__  $$ /$$_____/| $$  /$$/
| $$$$_  $$$$| $$| $$  \__/| $$$$$$$$| $$  $$$| $$| $$  \ $$| $$      | $$$$$$/
| $$$/ \  $$$| $$| $$      | $$_____/| $$\  $ | $$| $$  | $$| $$      | $$_  $$
| $$/   \  $$| $$| $$      |  $$$$$$$| $$ \/  | $$|  $$$$$$/|  $$$$$$$| $$ \  $$
|__/     \__/|__/|__/       \_______/|__/     |__/ \______/  \_______/|__/  \__/

port:                         9999
enable-browser-proxying:      false
no-request-journal:           false
verbose:                      false

1reaction

harti2006commented, May 7, 2019

I had to replace the semicolon with a colon, otherwise java could not find the main class

java -cp 'wiremock.jar:slf4j-nop.jar' 'com.github.tomakehurst.wiremock.standalone.WireMockServerRunner'

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