Can't find my log files (Vaadin + Spring Boot + Maven project)

After migrating my project to Spring Boot I can't find my log messages anywhere.

As it mentioned here, I've placed logging.properties file to this dir: src/main/resources and also tried to place it to src/main/java.

Here is a content of my logging.properties:

log4j.rootLogger=DEBUG, stdout, file
# 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

# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=log4j-application.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

Here is my code, where I try to log something:

import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.slf4j.bridge.SLF4JBridgeHandler;

public class BatchService {
private final Logger logger = Logger.getLogger(BatchService.class.getName());
//not sure what for it is, but i've both with and without this line
static { SLF4JBridgeHandler.install(); }

public List<Batch> getBatchByDate(Date startDate) throws ParseException {
    //...some code,
    //And yep, I've tried different variants of logging:
    logger.log(Level.ALL, "Where am i");
    logger.log(Level.INFO, "Where am i");
    logger.log(Level.DEBUG, "Where am i");
    logger.log(Level.ERROR, "Where am i");
    logger.info("Where am i");
    logger.debug("Where am i");
    logger.error("Where am i");
    System.out.println("Where am i");
    //some other code
   }
  }
}

Here is my pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ru.my.home.project</groupId>
<artifactId>themane</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Appl Name</name>
<description>Appl Name bla-bla</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.2.RELEASE</version>
<relativePath/>
<!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.vaadin.addons</groupId>
<artifactId>loginform</artifactId>
<version>0.6.2</version>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
</dependency>
<dependency>
<groupId>ext.microsoft</groupId>
<artifactId>mssql-jdbc-driver</artifactId>
<version>2.1.2.1</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>7.5.5</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.jvnet.jaxb2.maven2</groupId>
<artifactId>maven-jaxb2-plugin</artifactId>
<version>0.12.3</version>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<schemaLanguage>WSDL</schemaLanguage>
<generatePackage>hello.wsdl</generatePackage>
<schemas>
<schema>
<url>http://wsf.cdyne.com/WeatherWS/Weather.asmx?wsdl</url>
</schema>
</schemas>
</configuration>
</plugin>
</plugins>
</build>
</project>

And as a result - there is no log file, there is no my messanges in the console, there is no even error messanges about inability to initiate log4j. In the console I can only find standard Spring messages about tomcat start and so on, all these beautiful spring logos, and bla-bla-bla.

And, yep, the actual getBatchByDate call works fine - I can see a lot of mybatis errors in the console.