diff --git a/build.gradle b/build.gradle
index 9a41398..b18c757 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 }
 
 group = "org.bdware.sc"
-version = "1.8.7"
+version = "1.8.9"
 tasks.withType(JavaCompile) {
     //   options.compilerArgs << '-Xlint:none'
     //   options.compilerArgs << '-Xlint:deprecation' << "-Werror"
@@ -68,7 +68,7 @@ jar {
         // while develop at local use "false"
         configurations.runtimeClasspath.filter {
             it.getAbsolutePath().contains("/lib/")
-            //   false
+          //  false
         }.collect {
             it.isDirectory() ? it : zipTree(it)
         }
diff --git a/src/main/java/org/bdware/sc/engine/hook/DOOPAfterExecHandler.java b/src/main/java/org/bdware/sc/engine/hook/DOOPAfterExecHandler.java
index 3e06b87..ff111d4 100644
--- a/src/main/java/org/bdware/sc/engine/hook/DOOPAfterExecHandler.java
+++ b/src/main/java/org/bdware/sc/engine/hook/DOOPAfterExecHandler.java
@@ -9,7 +9,7 @@ import org.bdware.doip.codec.doipMessage.DoipResponseCode;
 import org.bdware.doip.codec.operations.BasicOperations;
 import org.bdware.sc.JSEngine;
 import org.bdware.sc.boundry.ScriptReturnException;
-import org.bdware.sc.engine.JSONTool;
+import org.bdware.sc.conn.ByteUtil;
 import org.bdware.sc.entity.DoipMessagePacker;
 import org.bdware.sc.node.AnnotationHook;
 import org.bdware.sc.node.ArgPacks;
@@ -41,7 +41,11 @@ public class DOOPAfterExecHandler implements AnnotationHook {
             } else {
                 // pack
                 if (!(argPacks.ret instanceof DoipMessage)) {
-                    JsonObject jsonObjectRes = ((JsonElement)argPacks.ret).getAsJsonObject();
+                    JsonObject jsonObjectRes = ((JsonElement) argPacks.ret).getAsJsonObject();
+                    if (!jsonObjectRes.has("bodyBase64Encoded") || jsonObjectRes.get("bodyBase64Encoded").getAsBoolean() == false) {
+                        String body = jsonObjectRes.get("body").getAsString();
+                        jsonObjectRes.addProperty("body", ByteUtil.encodeBASE64(body.getBytes(StandardCharsets.UTF_8)));
+                    }
                     // validate json response
                     ArgSchemaVisitor visitor = new ArgSchemaVisitor(jsonObjectRes);
                     validateJsonElementRulesByArgSchemaVisitor(jsonResponseRules, visitor);
diff --git a/src/main/java/org/bdware/sc/engine/hook/DOOPBeforeExecHandler.java b/src/main/java/org/bdware/sc/engine/hook/DOOPBeforeExecHandler.java
index db31ea5..d1cf7d5 100644
--- a/src/main/java/org/bdware/sc/engine/hook/DOOPBeforeExecHandler.java
+++ b/src/main/java/org/bdware/sc/engine/hook/DOOPBeforeExecHandler.java
@@ -82,8 +82,11 @@ public class DOOPBeforeExecHandler implements AnnotationHook {
     }
 
     public DoipMessage convertHttpRequestToDoipMessage(ContractRequest httpReq) {
-        JsonObject jsonParams = JsonParser.parseString(httpReq.getArg().getAsString()).getAsJsonObject();
-        JsonDoipMessage doipMessage = JsonUtil.fromJson(jsonParams, JsonDoipMessage.class);
+        JsonElement arg = httpReq.getArg();
+        if (!arg.isJsonObject()) {
+            arg = JsonParser.parseString(arg.getAsString());
+        }
+        JsonDoipMessage doipMessage = JsonUtil.fromJson(arg, JsonDoipMessage.class);
         return doipMessage.toRequestDoipMessage();
     }