less verbose console output during unit tests, and log to a file

crawler4j/src/test/resources/logback.xml

@@ -1,26 +1,33 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE XML>
 <configuration>
 
     <property name="LOG_HOME" value="target/test-logs" />
     <property name="LOG_FILE_NAME" value="/crawler4j.log" />
 
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
+            <level>INFO</level>
+        </filter>
         <encoder>
             <pattern>%date{HH:mm:ss} %-5level [%thread] - [%logger{0}]- %msg%n</pattern>
         </encoder>
     </appender>
 
     <appender name="FILE" class="ch.qos.logback.core.FileAppender">
         <file>${LOG_HOME}/${LOG_FILE_NAME}</file>
+        <append>false</append>
         <encoder>
             <pattern>%date %-5level [%thread] - [%logger] - %msg%n</pattern>
         </encoder>
     </appender>
 
     <logger name="com.github.tomakehurst" level="ERROR"/>
+    <logger name="org.apache.http" level="WARN" />
     <logger name="org.eclipse.jetty" level="ERROR" />
 
     <root level="DEBUG">
         <appender-ref ref="STDOUT" />
-        <!--<appender-ref ref="FILE" />-->
+        <appender-ref ref="FILE" />
     </root>
 </configuration>