新增log4j配置文件

skywalking-server/src/main/resources/log4j.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
+
+<log4j:configuration>
+
+    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
+        <layout class="org.apache.log4j.PatternLayout">
+            <param name="ConversionPattern"
+                   value="%d - %c -%-4r [%t] %-5p %x - %m%n" />
+        </layout>
+    </appender>
+
+    <root>
+        <priority value="debug" />
+        <appender-ref ref="CONSOLE" />
+    </root>
+
+
+</log4j:configuration>