Vaadin Flow 11 Logger

Flow
1

Hello I want use SLF4J in my project
I find only this

https://vaadin.com/docs/v8/framework/advanced/advanced-logging.html#advanced.logging.slf4j

Is this actual for Flow 10 & 11?

2

Hello,

to use SLF4J in you project you only need to include the dependency in the pom.xml .

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

and create a log4j.properties file.

# Root logger option
log4j.rootLogger=INFO, stdout

# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

You should locate the log4j.properties inside the resources application folder.

After that, you can access the logger this way:

LoggerFactory.getLogger(getClass());
3

Thank you

4

How add support logback?
I try show some log info in this example
https://github.com/vaadin/base-starter-spring-gradle

But can’t

5

My error.