diff --git a/pom.xml b/pom.xml
index 081d73e..dbff9cf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,25 +1,37 @@
-<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>
+<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>com</groupId>
-  <artifactId>GHS</artifactId>
-  <version>0.0.1-SNAPSHOT</version>
-  <packaging>jar</packaging>
+	<groupId>com</groupId>
+	<artifactId>GHS</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
 
-  <name>GHS</name>
-  <url>http://maven.apache.org</url>
+	<name>GHS</name>
+	<url>http://maven.apache.org</url>
 
-  <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-  </properties>
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
 
-  <dependencies>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>3.8.1</version>
-      <scope>test</scope>
-    </dependency>
-  </dependencies>
+	<dependencies>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>3.8.1</version>
+			<scope>test</scope>
+		</dependency>
+		<!-- 添加log4j日志相关jar包 -->
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+			<version>1.7.25</version>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-log4j12</artifactId>
+			<version>1.7.5</version>
+		</dependency>
+	</dependencies>
 </project>
diff --git a/src/main/java/com/ghs/App.java b/src/main/java/com/ghs/App.java
index f8de675..c1e5adb 100644
--- a/src/main/java/com/ghs/App.java
+++ b/src/main/java/com/ghs/App.java
@@ -1,13 +1,18 @@
 package com.ghs;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * Hello world!
  *
  */
-public class App 
+public class App
 {
+	private static final Logger logger = LoggerFactory.getLogger(App.class);	
+	
     public static void main( String[] args )
     {
-        System.out.println( "Hello World!" );
+    	logger.info("hello world");
     }
 }
diff --git a/src/main/resources/log4j.properties b/src/main/resources/log4j.properties
new file mode 100644
index 0000000..184a948
--- /dev/null
+++ b/src/main/resources/log4j.properties
@@ -0,0 +1,40 @@
+### 设置###
+log4j.rootLogger = debug,stdout,D,E
+
+### 输出信息到控制抬 ###
+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 = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
+
+##### 输出DEBUG 级别以上的日志文件设置 #####
+#每天产生一个日志文件
+log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
+#日志文件位置：该路径为:项目根目录/logs/
+log4j.appender.D.File = logs/debug.log
+#保存的日志备份文件个数
+log4j.appender.debug.MaxBackupIndex=10
+#日志文件是否追加
+log4j.appender.D.Append = true
+#定义的时间格式，如果时间定义到分钟（mm）就是每分钟生成一个日志文件，而这里定义的这个格式就是日志名后缀
+#每分钟
+log4j.appender.D.DatePattern='_'yyyy-MM-dd-HH-mm
+#log4j.appender.D.DatePattern='_' yyyy-MM-dd-HH    每小时
+#log4j.appender.D.DatePattern='_' yyyy-MM-dd	每天
+#log4j.appender.D.DatePattern='_' yyyy-MM-dd-a	每半天
+#日志输出级别
+log4j.appender.D.Threshold = DEBUG
+#日志中输出的日志的格式
+log4j.appender.D.layout = org.apache.log4j.PatternLayout
+#定义日志输出格式
+log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
+
+
+### 输出ERROR 级别以上的日志文件设置 ###
+log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
+log4j.appender.E.File = logs/error.log
+log4j.appender.debug.MaxBackupIndex=10
+log4j.appender.E.Append = true
+log4j.appender.E.Threshold = ERROR 
+log4j.appender.E.layout = org.apache.log4j.PatternLayout
+log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
\ No newline at end of file
diff --git a/src/main/resources/log4j.xml b/src/main/resources/log4j.xml
new file mode 100644
index 0000000..405e35f
--- /dev/null
+++ b/src/main/resources/log4j.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" 
+	"http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd" >
+<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
+	<!--输出方式：输出到控制台--> 
+	<appender name="console.CONSOLE" class="org.apache.log4j.ConsoleAppender">
+		<param name="Target" value="System.out"/>  
+		<!--Threshold是个全局的过滤器，他将把低于所设置的level的信息过滤不显示出来--> 
+		<param name="Threshold" value="debug" />
+		<layout class="org.apache.log4j.PatternLayout">
+			<param name="ConversionPattern" value="[%-5p][%d{yyyy-MM-dd HH:mm:ss,SSS}][%l] :%m%n" />
+		</layout>
+	</appender>
+	
+	<!--根默认会自动构建一个 root,输出INFO级别的日志到控制台，供logger继承--> 
+	<root>
+		<priority value ="INFO"/> 
+		<appender-ref ref="console.CONSOLE" />
+	</root>
+</log4j:configuration>
\ No newline at end of file