diff --git a/src/main/java/com/lq/wechat/util/IoUtil.java b/src/main/java/com/lq/wechat/util/IoUtil.java
index 00d0f77..eb1e647 100755
--- a/src/main/java/com/lq/wechat/util/IoUtil.java
+++ b/src/main/java/com/lq/wechat/util/IoUtil.java
@@ -11,6 +11,11 @@ import java.io.InputStreamReader;
  */
 public class IoUtil {
 
+    /**
+     * 流转字符串
+     * @param inputStream
+     * @return
+     */
     public  static String convertStreamToString(InputStream inputStream){
         BufferedReader reader=new BufferedReader(new InputStreamReader(inputStream));
         StringBuilder sb=new StringBuilder();
diff --git a/src/main/java/com/lq/wechat/util/MessageUtil.java b/src/main/java/com/lq/wechat/util/MessageUtil.java
index 28f9058..e41aff3 100755
--- a/src/main/java/com/lq/wechat/util/MessageUtil.java
+++ b/src/main/java/com/lq/wechat/util/MessageUtil.java
@@ -20,8 +20,10 @@ import java.util.Map;
  * @author qi
  */
 public class  MessageUtil {
-	
-
+	/**
+	 * 默认字符编辑
+	 */
+	public static final String DEFAULT_ENCODING="utf8";
 	
 	/**
 	 *  xml 转 map对象
@@ -50,7 +52,7 @@ public class  MessageUtil {
 	 * @return
 	 */
 	public static String MessageToXml(Object obj){
-		XStream xstream = new XStream(new DomDriver("utf8"));
+		XStream xstream = new XStream(new DomDriver(DEFAULT_ENCODING));
 		// 识别obj类中的注解
         xstream.processAnnotations(obj.getClass());
         /*