diff --git a/src/main/java/com/sunyard/sge/database/SydApi4Database.java b/src/main/java/com/sunyard/sge/database/SydApi4Database.java
index b012027..e4abe4c 100644
--- a/src/main/java/com/sunyard/sge/database/SydApi4Database.java
+++ b/src/main/java/com/sunyard/sge/database/SydApi4Database.java
@@ -40,6 +40,10 @@ public class SydApi4Database implements SydApi {
     @Override
     public void SYD_Disconnect_Ex() {
         if (isShortLinkMode) {
+            if ( null == hsms ){
+                return;
+            }
+
             SydApi4j api = hsms[0];
             if (null != api) {
                 try {
@@ -57,9 +61,6 @@ public class SydApi4Database implements SydApi {
         if (LogFactory.iLogLevel==3) {
             log.debug("SYD_SM3_Hash_ShortData方法接收参数：pcData：{}", Arrays.toString(pcData));
         }
-        if (pcData.length==0){
-            throw new SydApiException(-19);
-        }
         if (null == this.hsms || this.hsms.length < 1) {
             throw new SydApiException(-1);
         }
diff --git a/src/test/java/sample/Sample.java b/src/test/java/sample/Sample.java
index 6d57047..17f8cd4 100644
--- a/src/test/java/sample/Sample.java
+++ b/src/test/java/sample/Sample.java
@@ -16,7 +16,7 @@ public class Sample
     public static void main(String[] args) {
 
         // 路径要以 / 或 \\ 结尾表示目录
-        SydApi.SYD_SetLogConfig("./logs/",3);
+        SydApi.SYD_SetLogConfig("./logs/",1);
 
         Logger log = LogFactory.getLogger();
         log.info("start");
@@ -373,7 +373,7 @@ public class Sample
         int keyIdx = 0;
         // 测试数据
         byte[] data = new byte[16];
-        byte[] encData = api.SYD_SM4_ShortData( keyIdx , data, Consts.ECB_ENC );
+        byte[] encData = api.SYD_SM4_ShortData( keyIdx , data, Consts.ECB_DEC );
         byte[] orgData = api.SYD_SM4_ShortData( keyIdx , encData, Consts.ECB_DEC );
         System.out.println( "HEX=" + Util.bytes2HexString( encData ) );
         Assert.assertArrayEquals( orgData, data );