diff --git a/skywalking-api/.gitignore b/skywalking-api/.gitignore
deleted file mode 100644
index 06f9ac876..000000000
--- a/skywalking-api/.gitignore
+++ /dev/null
@@ -1,15 +0,0 @@
-*.class
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
-*.war
-*.ear
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-.idea
-*.iml
-/bin/
diff --git a/skywalking-api/pom.xml b/skywalking-api/pom.xml
index d6b3974ad..2799d4058 100644
--- a/skywalking-api/pom.xml
+++ b/skywalking-api/pom.xml
@@ -1,41 +1,50 @@
 <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>
+         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.ai.cloud</groupId>
-  <artifactId>skywalking-api</artifactId>
-  <version>1.0-SNAPSHOT</version>
-  <packaging>pom</packaging>
+    <groupId>com.ai.cloud</groupId>
+    <artifactId>skywalking-api</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
 
-  <name>skywalking-api</name>
-  <url>http://maven.apache.org</url>
+    <name>skywalking-api</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>4.11</version>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.apache.poi</groupId>
-      <artifactId>poi</artifactId>
-      <version>3.13</version>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>com.ai.cloud</groupId>
-      <artifactId>skywalking-protocol</artifactId>
-      <version>1.0-SNAPSHOT</version>
-    </dependency>
-    <dependency>
-      <groupId>org.apache.htrace</groupId>
-      <artifactId>htrace-core</artifactId>
-      <version>3.1.0-incubating</version>
-    </dependency>
-  </dependencies>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.ai.cloud</groupId>
+            <artifactId>skywalking-protocol</artifactId>
+            <version>1.0-SNAPSHOT</version>
+        </dependency>
+    </dependencies>
+    <build>
+		<plugins>
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>1.6</source>
+					<target>1.6</target>
+					<encoding>${project.build.sourceEncoding}</encoding>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-resources-plugin</artifactId>
+				<version>2.4.3</version>
+				<configuration>
+					<encoding>${project.build.sourceEncoding}</encoding>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/skywalking-protocol/pom.xml b/skywalking-protocol/pom.xml
index b689c08fa..15207a603 100644
--- a/skywalking-protocol/pom.xml
+++ b/skywalking-protocol/pom.xml
@@ -1,11 +1,10 @@
 <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>
+	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.ai.cloud</groupId>
-  <artifactId>skywalking-protocol</artifactId>
-  <version>1.0-SNAPSHOT</version>
-  <packaging>pom</packaging>
+	<groupId>com.ai.cloud</groupId>
+	<artifactId>skywalking-protocol</artifactId>
+	<version>1.0-SNAPSHOT</version>
 
   <name>skywalking-protocol</name>
   <url>http://maven.apache.org</url>
@@ -22,4 +21,25 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
+  
+  <build>
+		<plugins>
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>1.6</source>
+					<target>1.6</target>
+					<encoding>${project.build.sourceEncoding}</encoding>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-resources-plugin</artifactId>
+				<version>2.4.3</version>
+				<configuration>
+					<encoding>${project.build.sourceEncoding}</encoding>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/skywalking-sdk-plugin/pom.xml b/skywalking-sdk-plugin/pom.xml
index 4200d35de..399661284 100644
--- a/skywalking-sdk-plugin/pom.xml
+++ b/skywalking-sdk-plugin/pom.xml
@@ -1,31 +1,52 @@
 <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>
+	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.ai.cloud</groupId>
-  <artifactId>skywalking-sdk-plugin</artifactId>
-  <version>1.0-SNAPSHOT</version>
-  <modules>
-    <module>dubbo-plugin</module>
-    <module>spring-plugin</module>
-    <module>jdbc-plugin</module>
-    <module>web-plugin</module>
-  </modules>
-  <packaging>pom</packaging>
+	<groupId>com.ai.cloud</groupId>
+	<artifactId>skywalking-sdk-plugin</artifactId>
+	<version>1.0-SNAPSHOT</version>
+	<modules>
+		<module>dubbo-plugin</module>
+		<module>spring-plugin</module>
+		<module>jdbc-plugin</module>
+		<module>web-plugin</module>
+	</modules>
+	<packaging>pom</packaging>
 
-  <name>skywalking-sdk-plugin</name>
-  <url>http://maven.apache.org</url>
+	<name>skywalking-sdk-plugin</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>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>1.6</source>
+					<target>1.6</target>
+					<encoding>${project.build.sourceEncoding}</encoding>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-resources-plugin</artifactId>
+				<version>2.4.3</version>
+				<configuration>
+					<encoding>${project.build.sourceEncoding}</encoding>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
 </project>