diff --git a/src/main/base/org/bdware/sc/ComponedContractResult.java b/src/main/base/org/bdware/sc/ComponedContractResult.java
index 5da7838..c1bae44 100644
--- a/src/main/base/org/bdware/sc/ComponedContractResult.java
+++ b/src/main/base/org/bdware/sc/ComponedContractResult.java
@@ -53,9 +53,10 @@ public class ComponedContractResult {
                 return;
             }
         } catch (Exception e) {
+            String str = null;
             cr2 =
                     new ContractResult(
-                            ContractResult.Status.Error, new JsonPrimitive("parse str failed:"));
+                            ContractResult.Status.Error, new JsonPrimitive("parse str failed:" + obj.toString()));
             e.printStackTrace();
         }
         // if (cr2.status == ContractResult.Status.Error) { // 结果不是Success不参与最终结果计算
diff --git a/src/main/base/org/bdware/sc/conn/ServiceServer.java b/src/main/base/org/bdware/sc/conn/ServiceServer.java
index db83b34..b142fed 100644
--- a/src/main/base/org/bdware/sc/conn/ServiceServer.java
+++ b/src/main/base/org/bdware/sc/conn/ServiceServer.java
@@ -25,7 +25,7 @@ public class ServiceServer extends Thread {
     public static final ExecutorService executor =
             new ThreadPoolExecutor(
                     8,
-                    15,
+                    Integer.MAX_VALUE,
                     60,
                     TimeUnit.SECONDS,
                     new SynchronousQueue<>());
diff --git a/src/test/java/org/bdware/sc/boundary/utils/SM2UtilTest.java b/src/test/java/org/bdware/sc/boundary/utils/SM2UtilTest.java
index c216d72..b6bf29a 100644
--- a/src/test/java/org/bdware/sc/boundary/utils/SM2UtilTest.java
+++ b/src/test/java/org/bdware/sc/boundary/utils/SM2UtilTest.java
@@ -19,8 +19,9 @@ public class SM2UtilTest {
     String keyPairStr =
             "{\"publicKey\":\"0442e39c0b1623e6f95ef896d37f41aa3cd98fbc3aea71250eedba4335c6c3aff51b5fa2352f920d1063b50a30738427c18375df886985a63e0f496293fdad22a8\",\"privateKey\":\"b7e504cf951792554bf4a9874be37cb1279d38939444388e2046ee9603b4f0c4\"}";
     SM2KeyPair keyPair = SM2KeyPair.fromJson(keyPairStr);
+
     @Test
-    public void verify2(){
+    public void verify2() {
         String toVerify = "GeneralContract|plainTextTransmission|{\"ledger\":\"test\",\"data\":\"上链信息为json格式\"}|04398dfde44290595cd098cd2f904b36367c69f9011719d43fb0955f823cf1386764769bc7c0a5649dcb316d552998a5c106afd268d9db8b6482ce527544a7bd15";
         String sign = "30440220137771d7505abde700c89cfa376f67c564dfdec6ffdb08cb08ff70544be6cb6f0220587296439bedf43f4b0bfec2d7030a8250d369e53af623e50a734e3b6cb780cb";
         String pubkey = "04398dfde44290595cd098cd2f904b36367c69f9011719d43fb0955f823cf1386764769bc7c0a5649dcb316d552998a5c106afd268d9db8b6482ce527544a7bd15";
@@ -33,13 +34,14 @@ public class SM2UtilTest {
 
         System.out.println(cr.verifySignature());
     }
+
     @Test
     public void base64() {
         String gstr =
                 "09146332716e7767327923056946406e49570e5909146332716e7767327923056946406e49570e59";
         byte[] bytes = ByteUtils.fromHexString(gstr);
-       // String str = new BASE64Encoder().encode(bytes);
-     //   System.out.println(str);
+        // String str = new BASE64Encoder().encode(bytes);
+        //   System.out.println(str);
     }
 
     @Test
@@ -128,6 +130,24 @@ public class SM2UtilTest {
 
     }
 
+    @Test
+    public void dosignTest() throws Exception {
+        String tosign = "action=startContract&script=contract%20shortc%7B%0A%09export%20function%20main(arg)%7B%0A%09%09return%20arg.length%3B%09%0A%09%7D%0A%7D&pubKey=041a3875bb1a8d6acfc1142c60e3cc7c11831d4878c6dbbf9bb0929716d6cf402492b9629a4ced9198ae2c419f8d3d6ae810a431458d38901e5597636b715584d4";
+       // keyPair = SM2KeyPair.fromJson("{\"privateKey\":\"94728f3d95f19b3b5b11a31fdb603b5b2e8b377d9520d0680ac4f270cc82ec51\",\"publicKey\":\"041a3875bb1a8d6acfc1142c60e3cc7c11831d4878c6dbbf9bb0929716d6cf402492b9629a4ced9198ae2c419f8d3d6ae810a431458d38901e5597636b715584d4\"}");
+        keyPair = SM2KeyPair.fromJson("{\"privateKey\":\"589d94ee5688358a1c5c18430dd9c75097ddddebf769f139da36a807911d20f8\",\"publicKey\":\"04d1924329f72ced148f6f333fb985ccbaa31b1e3aacf10be5f43d4a4ff5ad88899a005e79e37fc06993e1d66ada8cf8b711cb36f59538bb7d3e39e70fa9360ddd\"}");
+        String signature = ByteUtils.toHexString(
+                SM2Util.sign(
+                        keyPair.getPrivateKeyParameter(), tosign.getBytes()));
+        System.out.println(signature);
+        ECPublicKeyParameters pubKey =
+                BCECUtil.createECPublicKeyFromStrParameters(
+                        keyPair.getPublicKeyStr(), SM2Util.CURVE, SM2Util.DOMAIN_PARAMS);
+        boolean verify = SM2Util.verify(
+                pubKey, tosign.getBytes(), ByteUtils.fromHexString(signature));
+        System.out.println(verify);
+
+
+    }
     // Deprecated
     //    @Test
     //    public void signAtServer() {