diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/SimpleHttpClient.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/SimpleHttpClient.java
index f32e821c..27005fff 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/SimpleHttpClient.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/SimpleHttpClient.java
@@ -28,7 +28,7 @@ import com.foxinmy.weixin4j.util.StringUtil;
  * @since JDK 1.6
  * @see
  */
-public class SimpleHttpClient extends AbstractHttpClient implements HttpClient {
+public class SimpleHttpClient extends AbstractHttpClient {
 
 	private final HttpParams params;
 
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/weixin/WeixinRequestExecutor.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/weixin/WeixinRequestExecutor.java
index f24cf664..6f3795ef 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/weixin/WeixinRequestExecutor.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/weixin/WeixinRequestExecutor.java
@@ -108,9 +108,9 @@ public class WeixinRequestExecutor {
 	public WeixinResponse get(String url, URLParameter... parameters)
 			throws WeixinException {
 		// always contain the question mark
-		StringBuilder buf = new StringBuilder(url).append("&");
+		StringBuilder buf = new StringBuilder(url);
 		if (parameters != null && parameters.length > 0) {
-			buf.append(FormUrlEntity.formatParameters(Arrays.asList(parameters)));
+			buf.append("&").append(FormUrlEntity.formatParameters(Arrays.asList(parameters)));
 		}
 		HttpRequest request = new HttpRequest(HttpMethod.GET, buf.toString());
 		return doRequest(request);
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/model/Button.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/model/Button.java
index 3666d9e8..d6620c87 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/model/Button.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/model/Button.java
@@ -72,7 +72,7 @@ public class Button implements Serializable {
 	 */
 	public Button(String name, Button... subButtons) {
 		this.name = name;
-		this.subs = Arrays.asList(subButtons);
+		this.subs = new ArrayList<Button>(Arrays.asList(subButtons));
 	}
 
 	/**
diff --git a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java
index d6de2232..02ba5060 100644
--- a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java
+++ b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java
@@ -935,6 +935,22 @@ public class WeixinProxy {
 		return userApi.inviteUser(userId, tips);
 	}
 
+	/**
+	 * 开启二次验证成功时调用(管理员须拥有userid对应员工的管理权限)
+	 * 
+	 * @param userid
+	 *            成员ID
+	 * @return 调用结果
+	 * @see com.foxinmy.weixin4j.qy.api.UserApi
+	 * @see <a href=
+	 *      "http://qydev.weixin.qq.com/wiki/index.php?title=%E5%85%B3%E6%B3%A8%E4%B8%8E%E5%8F%96%E6%B6%88%E5%85%B3%E6%B3%A8">
+	 *      二次验证说明</a>
+	 * @throws WeixinException
+	 */
+	public ApiResult authsucc(String userId) throws WeixinException {
+		return userApi.authsucc(userId);
+	}
+
 	/**
 	 * 创建标签(创建的标签属于管理组;默认为未加锁状态)
 	 *