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Java Intro to Java Web Development with Spark Diving into Web Development Meet Spark

Posted by Sandeep Annapareddy
Sandeep Annapareddy
3,141 Points

Error running the project

Hi, when I tried to run the project, I have been getting the following errors:

"C:\Program Files\Java\jdk1.8.0_65\bin\java" "-javaagent:C:\Program 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.

Please let me know how I can fix them. Thanks

Yanuar Prakoso
Yanuar Prakoso
15,196 Points

what version of Spark do you use?

5 Answers

Sandeep Annapareddy
Sandeep Annapareddy
3,141 Points
Sandeep Annapareddy
Sandeep Annapareddy
3,141 Points

Yanuar Prakoso version: 2.7.1

Yanuar Prakoso
Yanuar Prakoso
15,196 Points

please try to change it to version 2.3 (the same version as Craig)

compile "com.sparkjava:spark-core:2.3"

then restart all processes

Kareem Jeiroudi
Kareem Jeiroudi
14,984 Points
Kareem Jeiroudi
Kareem Jeiroudi
14,984 Points

I was getting the same message. There are two possibilities: either import the same version that Craig used,

compile 'com.sparkjava:spark-core:2.3'

or look up this StackOverflow post

Fathima Fas-ha
Fathima Fas-ha
6,847 Points
Fathima Fas-ha
Fathima Fas-ha
6,847 Points

I also had the same error, I had imported in the Main class

java
import static spark.route.HttpMethod.get;

instead of 

java
import static spark.Spark.get;

check whether you have imported the correct one!! :)

Alec Meyer
Alec Meyer
6,303 Points
Alec Meyer
Alec Meyer
6,303 Points 
compile 'org.slf4j.slf4j-simple:1.7.21'

Add that to your build.gradle

Tonnie Fanadez
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Tonnie Fanadez
UX Design Techdegree Graduate 22,796 Points
Tonnie Fanadez
.a{fill-rule:evenodd;}techdegree seal-36
Tonnie Fanadez
UX Design Techdegree Graduate 22,796 Points

If you're here in Oct. 2019 these 3 lines of code might save you.

    compile 'com.sparkjava:spark-core:2.9.1'
    compile 'org.slf4j:slf4j-api:2.0.0-alpha1'
    compile 'org.slf4j:slf4j-simple:2.0.0-alpha1'

Cheers