cleanup code with findbugs plugin

weixin4j-server/src/main/java/com/foxinmy/weixin4j/request/WeixinRequest.java

@@ -16,7 +16,7 @@ import com.foxinmy.weixin4j.util.AesToken;
  * @since JDK 1.7
  * @see
  */
-public class WeixinRequest implements Serializable, Cloneable {
+public class WeixinRequest implements Serializable {
 
 	private static final long serialVersionUID = -9157395300510879866L;
 

weixin4j-server/src/main/java/com/foxinmy/weixin4j/response/NewsResponse.java

@@ -89,7 +89,7 @@ public class NewsResponse implements WeixinResponse {
 	 * @since JDK 1.7
 	 * @see
 	 */
-	public class Article {
+	public static class Article {
 		/**
 		 * 图文消息标题
 		 */

weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/WeixinMessageDecoder.java

@@ -67,11 +67,11 @@ public class WeixinMessageDecoder extends
 		String weixinId = parameters.containsKey("weixin_id") ? parameters.get(
 				"weixin_id").get(0) : null;
 		AesToken aesToken = aesTokenMap.get(weixinId);
-		if (aesToken == null) { //
+		/*if (aesToken == null) { 
 			AesToken _aesToken = aesTokenMap.get(null);
 			aesToken = new AesToken(weixinId, _aesToken.getToken(),
 					_aesToken.getAesKey());
-		}
+		}*/
 		String originalContent = content;
 		String encryptContent = null;
 		if (!content.isEmpty() && encryptType == EncryptType.AES) {

weixin4j-server/src/main/java/com/foxinmy/weixin4j/util/AesToken.java

@@ -11,7 +11,7 @@ import java.io.Serializable;
  * @since JDK 1.7
  * @see
  */
-public class AesToken implements Serializable, Cloneable {
+public class AesToken implements Serializable {
 
 	private static final long serialVersionUID = -6001008896414323534L;
 

weixin4j-server/src/main/java/com/foxinmy/weixin4j/util/ClassUtil.java

@@ -72,16 +72,18 @@ public final class ClassUtil {
 				return file.isDirectory() || file.getName().endsWith(".class");
 			}
 		});
-		for (File file : files) {
-			if (file.isDirectory()) {
-				classes.addAll(findClassesByFile(file,
-						packageName + "." + file.getName()));
-			} else {
-				try {
-					classes.add(Class.forName(packageName + "."
-							+ file.getName().replace(".class", "")));
-				} catch (ClassNotFoundException e) {
-					;
+		if (files != null) {
+			for (File file : files) {
+				if (file.isDirectory()) {
+					classes.addAll(findClassesByFile(file, packageName + "."
+							+ file.getName()));
+				} else {
+					try {
+						classes.add(Class.forName(packageName + "."
+								+ file.getName().replace(".class", "")));
+					} catch (ClassNotFoundException e) {
+						;
+					}
 				}
 			}
 		}