STS 3.0.0 Log4j vs SLF4J

Hello Guys

I am just working with STS 3.0.0, it is fast
(I have read rumors about 3.1.0 is slow due Eclipse problems performance)

I have a question
Why for a generated Spring Template Project it use Log4j and not SLF4J?
I have read the second has some improvements about performance.

Thanks in advanced

The Spring template project does use SLF4J (at least the Spring MVC one)... SLF4J is just a wrapper (like commons-logging) around different frameworks...

Also 3.1 of STS isn't really slow only the Eclipse 4.x version, the 3.8 version is fine... (Eclipse 4.x is a PITA concerning performance :s )

Hi Marten

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The Spring template project does use SLF4J (at least the Spring MVC one)... SLF4J is just a wrapper (like commons-logging) around different frameworks...

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Seems only for Spring MVC, because for the Spring Integration Simple template only use Log4j, none
SLF4J dependency in the pom.xml appear

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Also 3.1 of STS isn't really slow only the Eclipse 4.x version, the 3.8 version is fine... (Eclipse 4.x is a PITA concerning performance :s )

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I will test it to get my own conclusions.

Kind Regards

Just created a project and there is no logging at all in the generated classes. So I suspect that the only need for log4j is so that there is some output. Commons-logging already comes in as a dependency for spring-core.

It also dependends on an older version (3.0) of spring, so that needs an upgrade to...

Hi Marten

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Just created a project and there is no logging at all in the generated classes.

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I am working with STS 3.0.0, I just checked my two Spring Integration Simple templates projects, and for both, they have the Main class and ..

Code:

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package com.manuel.jordan;

import java.util.Scanner;

import org.apache.log4j.Logger;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.manuel.jordan.service.StringConversionService;


/**
 * Starts the Spring Context and will initialize the Spring Integration routes.
 *
 * @author Your Name Here
 * @version 1.0
 *
 */
public final class Main {

        private static final Logger LOGGER = Logger.getLogger(Main.class);

        private Main() { }

        /**
        * Load the Spring Integration Application Context
        *
        * @param args - command line arguments
        */
        public static void main(final String... args) {

                if (LOGGER.isInfoEnabled()) {
                        LOGGER.info("\n========================================================="
                                          + "\n                                                        "
                                          + "\n          Welcome to Spring Integration!                "
                                          + "\n                                                        "
                                          + "\n    For more information please visit:                  "
                                          + "\n    http://www.springsource.org/spring-integration      "
                                          + "\n                                                        "
                                          + "\n=========================================================" );
                }
...

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So I suspect that the only need for log4j is so that there is some output.

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Seems a contradiction with your first sentence, in blue above

Yes, for this case, the Main class.
I think in STS 2.9.1 logging was included in some pre defined service classes.

Quote:

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It also dependends on an older version (3.0) of spring, so that needs an upgrade to...

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Agree.

Tell me, this happen in your STS 3.1.0?

Quote:

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Seems a contradiction with your first sentence, in blue above

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Well you didn't tell which project :). I created a Simple Spring Utility Project which doesn't have any logging in the methods...

Just checked the one you used and that indeed has logging and directly with log4j.