.

src/com/zdemo/AbstractConsumer.java

@@ -2,7 +2,9 @@ package com.zdemo;
 
 import org.redkale.convert.json.JsonConvert;
 
-import java.util.*;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
 
 /**
  * @author Liang
@@ -32,11 +34,11 @@ public abstract class AbstractConsumer implements IConsumer {
 
     @Override
     public final Set<String> getTopics() {
-        Set<String> keySet = eventMap.keySet();
-        if (keySet.isEmpty()) {
-            keySet.add("-");
+        if (!eventMap.isEmpty()) {
+            return eventMap.keySet();
         }
-        return keySet;
+
+        return Set.of("-");
     }
 
     @Override

src/com/zdemo/redis/RedisProducer.java

@@ -42,7 +42,11 @@ public class RedisProducer<T extends Event> implements IProducer<T>, Service {
     @Override
     public void send(T t) {
         try {
-            osw.write("PUBLISH " + t.topic + " '" + JsonConvert.root().convertTo(t.value) + "' \r\n");
+            String v = JsonConvert.root().convertTo(t.value);
+            if (v.startsWith("\"") && v.endsWith("\"")) {
+                v = v.substring(1, v.length() - 1);
+            }
+            osw.write("PUBLISH " + t.topic + " '" + v + "' \r\n");
             osw.flush();
         } catch (IOException e) {
             logger.log(Level.WARNING, "", e);