diff --git a/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginCategoriesExecutor.java b/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginCategoriesExecutor.java
index 0a3b76211..1d6e8c483 100644
--- a/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginCategoriesExecutor.java
+++ b/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginCategoriesExecutor.java
@@ -4,6 +4,7 @@ import com.fr.design.extra.PluginConstants;
 import com.fr.design.extra.Process;
 import com.fr.general.CloudCenter;
 import com.fr.general.http.HttpClient;
+import com.fr.stable.StringUtils;
 
 /**
  * Created by vito on 16/5/16.
@@ -28,7 +29,7 @@ public class GetPluginCategoriesExecutor implements Executor {
                     @Override
                     public void run(Process<String> process) {
                         String url = CloudCenter.getInstance().acquireUrlByKind("shop.plugin.category");
-                        if (url != null) {
+                        if (StringUtils.isNotEmpty(url)) {
                             HttpClient httpClient = new HttpClient(url);
                             result = httpClient.getResponseText();
                         } else {
diff --git a/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginFromStoreExecutor.java b/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginFromStoreExecutor.java
index 4a1168734..3bf7b2cb3 100644
--- a/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginFromStoreExecutor.java
+++ b/designer-base/src/main/java/com/fr/design/extra/exe/GetPluginFromStoreExecutor.java
@@ -52,7 +52,7 @@ public class GetPluginFromStoreExecutor implements Executor {
 
                     @Override
                     public void run(Process<String> process) {
-                        String plistUrl = CloudCenter.getInstance().acquireUrlByKind("shop.plugin.plist") + "?";
+                        String plistUrl = CloudCenter.getInstance().acquireUrlByKind("shop.plugin.plist");
                         boolean getRecommend = StringUtils.isEmpty(category) && StringUtils.isEmpty(seller) && StringUtils.isEmpty(fee) && StringUtils.isEmpty(scope);
                         if (getRecommend) {
                             result = PluginOperateUtils.getRecommendPlugins();
@@ -61,7 +61,7 @@ public class GetPluginFromStoreExecutor implements Executor {
 
                         if (StringUtils.isNotBlank(plistUrl)) {
                             StringBuilder url = new StringBuilder();
-                            url.append(plistUrl);
+                            url.append(plistUrl).append("?");
                             PluginOperateUtils.dealParams(url, category, seller, fee, scope);
                             try {
                                 HttpClient httpClient = new HttpClient(url.toString());
diff --git a/designer-base/src/main/java/com/fr/design/extra/exe/SearchOnlineExecutor.java b/designer-base/src/main/java/com/fr/design/extra/exe/SearchOnlineExecutor.java
index fdbd8562f..1a84519ee 100644
--- a/designer-base/src/main/java/com/fr/design/extra/exe/SearchOnlineExecutor.java
+++ b/designer-base/src/main/java/com/fr/design/extra/exe/SearchOnlineExecutor.java
@@ -14,8 +14,8 @@ import com.fr.stable.StringUtils;
  * Created by vito on 16/4/18.
  */
 public class SearchOnlineExecutor implements Executor {
-    private String result = StringUtils.EMPTY;
-    private String keyword;
+    private String result = JSONArray.create().toString();
+    private final String keyword;
 
     public SearchOnlineExecutor(String keyword) {
         this.keyword = keyword;
@@ -42,7 +42,11 @@ public class SearchOnlineExecutor implements Executor {
                                 result = PluginOperateUtils.getRecommendPlugins();
                                 return;
                             }
-                            HttpClient httpClient = new HttpClient(CloudCenter.getInstance().acquireUrlByKind("shop.plugin.store") + "&keyword=" + keyword);
+                            String url = CloudCenter.getInstance().acquireUrlByKind("shop.plugin.store");
+                            if (StringUtils.isEmpty(url)) {
+                                return;
+                            }
+                            HttpClient httpClient = new HttpClient(url + "&keyword=" + keyword);
                             httpClient.asGet();
                             String responseText = httpClient.getResponseText();
                             JSONObject jsonObject = new JSONObject(responseText);