diff --git a/src/com/zdemo/AbstractConsumer.java b/src/com/zdemo/AbstractConsumer.java
index 2a5768c..2793e44 100644
--- a/src/com/zdemo/AbstractConsumer.java
+++ b/src/com/zdemo/AbstractConsumer.java
@@ -14,6 +14,9 @@ public abstract class AbstractConsumer implements IConsumer {
 
     public final Map<String, EventType> eventMap = new HashMap<>();
 
+    public void preInit() {
+    }
+
     public void addEventType(EventType... eventType) {
         for (EventType type : eventType) {
             String[] topics = type.topic.split(",");
diff --git a/src/com/zdemo/IConsumer.java b/src/com/zdemo/IConsumer.java
index c34aaa1..32cdd25 100644
--- a/src/com/zdemo/IConsumer.java
+++ b/src/com/zdemo/IConsumer.java
@@ -1,9 +1,16 @@
 package com.zdemo;
 
+import org.redkale.util.TypeToken;
+
 import java.util.Collection;
 import java.util.logging.Logger;
 
 public interface IConsumer<T extends Event> {
+    TypeToken TYPE_TOKEN_STRING = new TypeToken<String>() {
+    };
+    TypeToken<Integer> TYPE_TOKEN_INT = new TypeToken<Integer>() {
+    };
+
     Logger logger = Logger.getLogger(IConsumer.class.getSimpleName());
 
     Collection<String> getSubscribes();
diff --git a/src/com/zdemo/kafak/KafakConsumer.java b/src/com/zdemo/kafak/KafakConsumer.java
index 8e197c7..ea08e2d 100644
--- a/src/com/zdemo/kafak/KafakConsumer.java
+++ b/src/com/zdemo/kafak/KafakConsumer.java
@@ -53,7 +53,8 @@ public abstract class KafakConsumer extends AbstractConsumer implements IConsume
     }
 
     @Override
-    public void init(AnyValue config) {
+    public final void init(AnyValue config) {
+        preInit();
         try (FileInputStream fis = new FileInputStream(new File(APP_HOME, "conf/kafak.properties"));) {
             props = new Properties();
             props.load(fis);
diff --git a/test/com/zdemo/test/MyConsumer.java b/test/com/zdemo/test/MyConsumer.java
index e7112b8..223b400 100644
--- a/test/com/zdemo/test/MyConsumer.java
+++ b/test/com/zdemo/test/MyConsumer.java
@@ -11,7 +11,8 @@ public class MyConsumer extends KafakConsumer {
         return "group-test"; //消费组名称
     }
 
-    {
+    @Override
+    public void preInit() {
         addEventType(
                 EventType.of("a1", new TypeToken<Float>() {
                 }, r -> {