diff --git a/pom.xml b/pom.xml
index 04f346e..692fc0d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,6 +70,11 @@
                 <artifactId>httpclient</artifactId>
                 <version>4.5.2</version>
             </dependency>
+            <dependency>
+                <groupId>com.jayway.jsonpath</groupId>
+                <artifactId>json-path</artifactId>
+                <version>2.2.0</version>
+            </dependency>
             <dependency>
                 <groupId>com.google.guava</groupId>
                 <artifactId>guava</artifactId>
diff --git a/webmagic-core/pom.xml b/webmagic-core/pom.xml
index fa8326d..d73c9f8 100644
--- a/webmagic-core/pom.xml
+++ b/webmagic-core/pom.xml
@@ -74,6 +74,12 @@
             <groupId>com.jayway.jsonpath</groupId>
             <artifactId>json-path</artifactId>
             <version>0.8.1</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>commons-lang</groupId>
+                    <artifactId>commons-lang</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
         <dependency>
diff --git a/webmagic-extension/pom.xml b/webmagic-extension/pom.xml
index 993a6f4..054342f 100644
--- a/webmagic-extension/pom.xml
+++ b/webmagic-extension/pom.xml
@@ -13,7 +13,7 @@
         <dependency>
             <groupId>redis.clients</groupId>
             <artifactId>jedis</artifactId>
-            <version>2.0.0</version>
+            <version>2.9.0</version>
         </dependency>
         <dependency>
             <groupId>us.codecraft</groupId>
diff --git a/webmagic-extension/src/main/java/us/codecraft/webmagic/example/MonitorExample.java b/webmagic-extension/src/main/java/us/codecraft/webmagic/example/MonitorExample.java
index 7e4efee..b759c03 100644
--- a/webmagic-extension/src/main/java/us/codecraft/webmagic/example/MonitorExample.java
+++ b/webmagic-extension/src/main/java/us/codecraft/webmagic/example/MonitorExample.java
@@ -13,14 +13,14 @@ public class MonitorExample {
 
     public static void main(String[] args) throws Exception {
 
-        Spider zhihuPageProcessor = Spider.create(new ZhihuPageProcessor())
+        Spider zhihuSpider = Spider.create(new ZhihuPageProcessor())
                 .addUrl("http://my.oschina.net/flashsword/blog");
         Spider githubSpider = Spider.create(new GithubRepoPageProcessor())
                 .addUrl("https://github.com/code4craft");
 
-        SpiderMonitor.instance().register(zhihuPageProcessor);
+        SpiderMonitor.instance().register(zhihuSpider);
         SpiderMonitor.instance().register(githubSpider);
-        zhihuPageProcessor.start();
+        zhihuSpider.start();
         githubSpider.start();
     }
 }
diff --git a/webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisPriorityScheduler.java b/webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisPriorityScheduler.java
index e95ca92..540574a 100644
--- a/webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisPriorityScheduler.java
+++ b/webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisPriorityScheduler.java
@@ -1,9 +1,8 @@
 package us.codecraft.webmagic.scheduler;
 
 import com.alibaba.fastjson.JSON;
-import com.sun.org.apache.regexp.internal.RE;
 import org.apache.commons.codec.digest.DigestUtils;
-import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.StringUtils;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.JedisPool;
 import us.codecraft.webmagic.Request;
diff --git a/webmagic-extension/src/test/java/us/codecraft/webmagic/monitor/SpiderMonitorTest.java b/webmagic-extension/src/test/java/us/codecraft/webmagic/monitor/SpiderMonitorTest.java
index 3baa0d6..6144da7 100644
--- a/webmagic-extension/src/test/java/us/codecraft/webmagic/monitor/SpiderMonitorTest.java
+++ b/webmagic-extension/src/test/java/us/codecraft/webmagic/monitor/SpiderMonitorTest.java
@@ -3,7 +3,7 @@ package us.codecraft.webmagic.monitor;
 import org.junit.Test;
 import us.codecraft.webmagic.Spider;
 import us.codecraft.webmagic.processor.example.GithubRepoPageProcessor;
-import us.codecraft.webmagic.processor.example.OschinaBlogPageProcessor;
+import us.codecraft.webmagic.processor.example.ZhihuPageProcessor;
 
 /**
  * @author code4crafer@gmail.com
@@ -20,12 +20,12 @@ public class SpiderMonitorTest {
             }
         };
 
-        Spider oschinaSpider = Spider.create(new OschinaBlogPageProcessor())
+        Spider zhihuSpider = Spider.create(new ZhihuPageProcessor())
                 .addUrl("http://my.oschina.net/flashsword/blog").thread(2);
         Spider githubSpider = Spider.create(new GithubRepoPageProcessor())
                 .addUrl("https://github.com/code4craft");
 
-        spiderMonitor.register(oschinaSpider, githubSpider);
+        spiderMonitor.register(zhihuSpider, githubSpider);
 
     }
 }