增加httpclient依赖

zheng-common/pom.xml

@@ -197,6 +197,12 @@
             <artifactId>mail</artifactId>
             <version>1.4.7</version>
         </dependency>
+        <!-- httpclient -->
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+            <version>4.5.2</version>
+        </dependency>
         <!-- servlet -->
         <dependency>
             <groupId>javax.servlet</groupId>