diff --git a/src/android/cordova/plugin/jcprinter/JcPrinter.java b/src/android/cordova/plugin/jcprinter/JcPrinter.java
index 27a9a9f..13a2889 100644
--- a/src/android/cordova/plugin/jcprinter/JcPrinter.java
+++ b/src/android/cordova/plugin/jcprinter/JcPrinter.java
@@ -38,9 +38,7 @@ import java.util.Set;
 public class JcPrinter extends CordovaPlugin {
 
 
-    private static final String TAG = "MainActivity";
-    private static final String RB_THERMAL = "热转印";
-    private Context context;
+    private static final String TAG = "JcPrinter";
 
     private Method[] methods = Util.getInstance().getClass().getDeclaredMethods();
 
@@ -82,50 +80,55 @@ public class JcPrinter extends CordovaPlugin {
 
     @Override
     public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
-        System.out.println("action = " + action);
-        switch (action) {
-            case "print":
-                this.print(args, callbackContext);
-                return true;
+        try{
+            Log.d(TAG,"action = " + action);
+            switch (action) {
+                case "print":
+                    this.print(args, callbackContext);
+                    return true;
 
-            case "getList":
-                this.getList(callbackContext);
-                return true;
-            case "connectPrinter":
-                this.connectPrinter(args, callbackContext);
-                return true;
-            case "isConnection":
-                this.isConnection(callbackContext);
-                return true;
-          case "action":
-              String methodName = args.optString(0);
-              JSONArray methodJsonArgs = args.getJSONArray(1);
-              Object[] methodArgs = new Object[methodJsonArgs.length()];
-              for(int i=0;i<methodJsonArgs.length();i++){
-                Object obj = methodJsonArgs.opt(i);
-                if(obj instanceof JSONArray){
-                  Object[] array = new Object[((JSONArray) obj).length()];
-                  for(int j=0;j<((JSONArray) obj).length();j++){
-                    array[i] = ((JSONArray) obj).opt(j);
-                  }
-                  obj = array;
-                }
-                methodArgs[i] = obj;
-              }
-              for(Method m:this.methods){
-                if(m.getName() == methodName){
-                  try {
-                    m.invoke(Util.getInstance(),methodArgs);
-                    callbackContext.success();
-                  } catch (IllegalAccessException | InvocationTargetException e) {
-                    callbackContext.error(e.getMessage());
-                  }
-                  return true;
-                }
-              }
-          case "generateLabelJson":
-              callbackContext.success(new String(Util.getInstance().generateLabelJson()));
-              return true;
+                case "getList":
+                    this.getList(callbackContext);
+                    return true;
+                case "connectPrinter":
+                    this.connectPrinter(args, callbackContext);
+                    return true;
+                case "isConnection":
+                    this.isConnection(callbackContext);
+                    return true;
+                case "action":
+                    String methodName = args.optString(0);
+                    JSONArray methodJsonArgs = args.getJSONArray(1);
+                    Object[] methodArgs = new Object[methodJsonArgs.length()];
+                    for(int i=0;i<methodJsonArgs.length();i++){
+                        Object obj = methodJsonArgs.opt(i);
+                        if(obj instanceof JSONArray){
+                            Object[] array = new Object[((JSONArray) obj).length()];
+                            for(int j=0;j<((JSONArray) obj).length();j++){
+                                array[i] = ((JSONArray) obj).opt(j);
+                            }
+                            obj = array;
+                        }
+                        methodArgs[i] = obj;
+                    }
+                    for(Method m:this.methods){
+                        String name = m.getName();
+                        if(m.getName().equals(methodName)){
+                            try {
+                                m.invoke(Util.getInstance(),methodArgs);
+                                callbackContext.success();
+                            } catch (IllegalAccessException | InvocationTargetException e) {
+                                callbackContext.error(e.getMessage());
+                            }
+                            return true;
+                        }
+                    }
+                case "generateLabelJson":
+                    callbackContext.success(new String(Util.getInstance().generateLabelJson()));
+                    return true;
+            }
+        }catch (Exception e){
+            callbackContext.error(e.getMessage());
         }
         return false;
     }
@@ -136,11 +139,9 @@ public class JcPrinter extends CordovaPlugin {
      */
     private void print(JSONArray args, CallbackContext callbackContext) {
         JSONArray data = args.optJSONArray(0);
-        JSONArray jsonInfo = args.optJSONArray(1);
-        List<String>info = new ArrayList<>();
-        for(int i=0;i<jsonInfo.length();i++){
-          info.add(jsonInfo.optString(i));
-        }
+        String infoStr = args.optString(1);
+        List<String> info = new ArrayList<>();
+        info.add(infoStr);
         //重置错误状态变量
         isError = false;
         //重置取消打印状态变量
@@ -178,6 +179,7 @@ public class JcPrinter extends CordovaPlugin {
 
             }
 
+
             @Override
             public void onError(int i) {
                 callbackContext.error(i);
@@ -344,6 +346,9 @@ public class JcPrinter extends CordovaPlugin {
     private void connectPrinter(JSONArray args, CallbackContext callbackContext) throws JSONException {
         JSONObject obj = args.getJSONObject(0);
         String address = obj.getString("address");
+        if(Util.isConnection() == 0){
+            Util.close();
+        }
         int connectResult = Util.openPrinter(address);
         cordova.getActivity().runOnUiThread(() -> {
             String hint = "";
@@ -378,10 +383,10 @@ public class JcPrinter extends CordovaPlugin {
             int blueTooth_admin_permission = ContextCompat.checkSelfPermission(cordova.getContext(), Manifest.permission.BLUETOOTH_ADMIN);
             int blueTooth_privileged_permission = ContextCompat.checkSelfPermission(cordova.getContext(), Manifest.permission.BLUETOOTH_PRIVILEGED);
             int blueTooth_connect_permission = ContextCompat.checkSelfPermission(cordova.getContext(), "android.permission.BLUETOOTH_CONNECT");
-            System.out.println("blueTooth_permission = " + blueTooth_permission);
-            System.out.println("blueTooth_admin_permission = " + blueTooth_admin_permission);
-            System.out.println("blueTooth_privileged_permission = " + blueTooth_privileged_permission);
-            System.out.println("blueTooth_connect_permission = " + blueTooth_connect_permission);
+            Log.d(TAG,"blueTooth_permission = " + blueTooth_permission);
+            Log.d(TAG,"blueTooth_admin_permission = " + blueTooth_admin_permission);
+            Log.d(TAG,"blueTooth_privileged_permission = " + blueTooth_privileged_permission);
+            Log.d(TAG,"blueTooth_connect_permission = " + blueTooth_connect_permission);
             if (blueTooth_permission == PERMISSION_GRANTED) {
                 ActivityCompat.requestPermissions(cordova.getActivity(), new String[]{Manifest.permission.BLUETOOTH}, 1001);
             }
@@ -414,7 +419,7 @@ public class JcPrinter extends CordovaPlugin {
         } catch (Exception e) {
             System.err.println(e.getMessage());
         }
-        System.out.println("printers = " + printers);
+        Log.d(TAG,"printers = " + printers);
         callbackContext.success(printers);
         return printers;
     }
diff --git a/www/jcPrinter.js b/www/jcPrinter.js
index 725cdec..93adecc 100644
--- a/www/jcPrinter.js
+++ b/www/jcPrinter.js
@@ -26,22 +26,22 @@ var exec = require('cordova/exec');
  * @param {*} success 
  * @param {*} error 
  */
-exports.print = function (data,info, success, error) {
-    exec(success, error, 'JcPrinter', 'print', [data,info]);
+exports.print = async function (data,info) {
+    return new Promise((resolve, reject) => exec(resolve,reject, 'JcPrinter', 'print', [data,info]));
 };
 
-exports.getList = function (arg0, success, error) {
-    exec(success, error, 'JcPrinter', 'getList', [arg0]);
+exports.getList = function (arg0) {
+    return new Promise((resolve, reject) => exec(resolve,reject, 'JcPrinter', 'getList', [arg0]));
 };
 
-exports.connectPrinter = function (arg0, success, error) {
-    exec(success, error, 'JcPrinter', 'connectPrinter', [arg0]);
+exports.connectPrinter = function (arg0) {
+    return new Promise((resolve, reject) => exec(resolve,reject,'JcPrinter', 'connectPrinter', [arg0]));
 }
 
-exports.connectPrinter = function (success, error) {
-    exec(success, error, 'JcPrinter', 'connectPrinter');
-}
 
+exports.isConnection = function (arg0) {
+    return new Promise((resolve, reject) => exec(resolve,reject,'JcPrinter', 'isConnection', [arg0]));
+}
 
 exports.Instance = {
     /**