diff --git a/pom.xml b/pom.xml
index f08b3b543..4ec241db7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,5 +1,10 @@
 <?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">
+<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">
     <groupId>us.codecraft</groupId>
     <version>1.0.0-SNAPSHOT</version>
     <modelVersion>4.0.0</modelVersion>
diff --git a/webmagic-core/pom.xml b/webmagic-core/pom.xml
index 9f2eda76c..f6530b467 100644
--- a/webmagic-core/pom.xml
+++ b/webmagic-core/pom.xml
@@ -1,5 +1,10 @@
 <?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">
+<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">
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic</artifactId>
diff --git a/webmagic-coverage/pom.xml b/webmagic-coverage/pom.xml
index c17309c87..c53a30c28 100644
--- a/webmagic-coverage/pom.xml
+++ b/webmagic-coverage/pom.xml
@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<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
+    xsi:schemaLocation="
+        http://maven.apache.org/POM/4.0.0
         http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-extension/pom.xml b/webmagic-extension/pom.xml
index b72922317..9290c18fc 100644
--- a/webmagic-extension/pom.xml
+++ b/webmagic-extension/pom.xml
@@ -1,5 +1,10 @@
 <?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">
+<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">
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic</artifactId>
diff --git a/webmagic-samples/pom.xml b/webmagic-samples/pom.xml
index 41a4b7b45..3eff105e1 100644
--- a/webmagic-samples/pom.xml
+++ b/webmagic-samples/pom.xml
@@ -1,5 +1,10 @@
 <?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">
+<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">
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic</artifactId>
diff --git a/webmagic-saxon/pom.xml b/webmagic-saxon/pom.xml
index 930f5b32c..b528d8ae6 100644
--- a/webmagic-saxon/pom.xml
+++ b/webmagic-saxon/pom.xml
@@ -1,5 +1,10 @@
 <?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">
+<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">
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic</artifactId>
diff --git a/webmagic-scripts/pom.xml b/webmagic-scripts/pom.xml
index 676ffd1a0..86e36c7da 100644
--- a/webmagic-scripts/pom.xml
+++ b/webmagic-scripts/pom.xml
@@ -1,5 +1,10 @@
 <?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">
+<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">
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic</artifactId>
diff --git a/webmagic-selenium/pom.xml b/webmagic-selenium/pom.xml
index 86b65daf9..831cfecf8 100644
--- a/webmagic-selenium/pom.xml
+++ b/webmagic-selenium/pom.xml
@@ -1,41 +1,46 @@
 <?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">
-	<parent>
-		<groupId>us.codecraft</groupId>
-		<artifactId>webmagic</artifactId>
-		<version>1.0.0-SNAPSHOT</version>
-	</parent>
-	<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">
+    <parent>
+        <groupId>us.codecraft</groupId>
+        <artifactId>webmagic</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
 
-	<artifactId>webmagic-selenium</artifactId>
+    <artifactId>webmagic-selenium</artifactId>
 
-	<dependencies>
-		<dependency>
-			<groupId>org.seleniumhq.selenium</groupId>
-			<artifactId>selenium-java</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>${project.groupId}</groupId>
-			<artifactId>webmagic-core</artifactId>
-			<version>${project.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>com.github.detro</groupId>
-			<artifactId>phantomjsdriver</artifactId>
-		</dependency>
-	</dependencies>
+    <dependencies>
+        <dependency>
+            <groupId>org.seleniumhq.selenium</groupId>
+            <artifactId>selenium-java</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>webmagic-core</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.detro</groupId>
+            <artifactId>phantomjsdriver</artifactId>
+        </dependency>
+    </dependencies>
 
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-deploy-plugin</artifactId>
-				<version>3.0.0-M1</version>
-				<configuration>
-					<skip>true</skip>
-				</configuration>
-			</plugin>
-		</plugins>
-	</build>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-deploy-plugin</artifactId>
+                <version>3.0.0-M1</version>
+                <configuration>
+                    <skip>true</skip>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
 </project>