diff --git a/version2/src/main/java/part2/Client/cache/serviceCache.java b/version2/src/main/java/part2/Client/cache/serviceCache.java
index 716d504..4da39df 100644
--- a/version2/src/main/java/part2/Client/cache/serviceCache.java
+++ b/version2/src/main/java/part2/Client/cache/serviceCache.java
@@ -27,6 +27,16 @@ public class serviceCache {
             cache.put(serviceName,addressList);
         }
     }
+    //修改服务地址
+    public void replaceServiceAddress(String serviceName,String oldAddress,String newAddress){
+        if(cache.containsKey(serviceName)){
+            List<String> addressList=cache.get(serviceName);
+            addressList.remove(oldAddress);
+            addressList.add(newAddress);
+        }else {
+            System.out.println("修改失败，服务不存在");
+        }
+    }
     //从缓存中取服务地址
     public  List<String> getServcieFromCache(String serviceName){
         if(!cache.containsKey(serviceName)) {
diff --git a/version2/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java b/version2/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java
index 61d6a9c..6d90bfe 100644
--- a/version2/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java
+++ b/version2/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java
@@ -39,10 +39,7 @@ public class watchZK {
                 // 节点创建时没有赋予值 create /curator/app1 只创建节点，在这种情况下，更新前节点的 data 为 null，获取不到更新前节点的数据
                 switch (type.name()) {
                     case "NODE_CREATED": // 监听器第一次执行时节点存在也会触发次事件
-                        //获取更新的节点的路径
-                        String path=new String(childData1.getPath());
-                        //按照格式 ，读取
-                        String[] pathList= path.split("/");
+                        String[] pathList= pasrePath(childData1);
                         if(pathList.length<=2) break;
                         else {
                             String serviceName=pathList[1];
@@ -57,12 +54,13 @@ public class watchZK {
                         } else {
                             System.out.println("节点第一次赋值!");
                         }
+                        String[] oldPathList=pasrePath(childData);
+                        String[] newPathList=pasrePath(childData1);
+                        cache.replaceServiceAddress(oldPathList[1],oldPathList[2],newPathList[2]);
                         System.out.println("修改后的数据: " + new String(childData1.getData()));
                         break;
                     case "NODE_DELETED": // 节点删除
-                        String path_d=new String(childData.getPath());
-                        //按照格式 ，读取
-                        String[] pathList_d= path_d.split("/");
+                        String[] pathList_d= pasrePath(childData);
                         if(pathList_d.length<=2) break;
                         else {
                             String serviceName=pathList_d[1];
@@ -79,4 +77,11 @@ public class watchZK {
         //开启监听
         curatorCache.start();
     }
+    //解析节点对应地址
+    public String[] pasrePath(ChildData childData){
+        //获取更新的节点的路径
+        String path=new String(childData.getPath());
+        //按照格式 ，读取
+        return path.split("/");
+    }
 }
\ No newline at end of file
diff --git a/version3/src/main/java/part1/Client/cache/serviceCache.java b/version3/src/main/java/part1/Client/cache/serviceCache.java
index 22b49ac..dee03ce 100644
--- a/version3/src/main/java/part1/Client/cache/serviceCache.java
+++ b/version3/src/main/java/part1/Client/cache/serviceCache.java
@@ -30,6 +30,16 @@ public class serviceCache {
             cache.put(serviceName,addressList);
         }
     }
+    //修改服务地址
+    public void replaceServiceAddress(String serviceName,String oldAddress,String newAddress){
+        if(cache.containsKey(serviceName)){
+            List<String> addressList=cache.get(serviceName);
+            addressList.remove(oldAddress);
+            addressList.add(newAddress);
+        }else {
+            System.out.println("修改失败，服务不存在");
+        }
+    }
     //从缓存中取服务地址列表
     public List<String> getServiceListFromCache(String serviceName){
         if(!cache.containsKey(serviceName)) {
diff --git a/version3/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java b/version3/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java
index 7861c1b..c8ef382 100644
--- a/version3/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java
+++ b/version3/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java
@@ -17,7 +17,7 @@ public class watchZK {
     //本地缓存
     serviceCache cache;
 
-    public watchZK(CuratorFramework client,serviceCache  cache){
+    public watchZK(CuratorFramework client, serviceCache cache){
         this.client=client;
         this.cache=cache;
     }
@@ -39,10 +39,7 @@ public class watchZK {
                 // 节点创建时没有赋予值 create /curator/app1 只创建节点，在这种情况下，更新前节点的 data 为 null，获取不到更新前节点的数据
                 switch (type.name()) {
                     case "NODE_CREATED": // 监听器第一次执行时节点存在也会触发次事件
-                        //获取更新的节点的路径
-                        String path=new String(childData1.getPath());
-                        //按照格式 ，读取
-                        String[] pathList= path.split("/");
+                        String[] pathList= pasrePath(childData1);
                         if(pathList.length<=2) break;
                         else {
                             String serviceName=pathList[1];
@@ -57,12 +54,13 @@ public class watchZK {
                         } else {
                             System.out.println("节点第一次赋值!");
                         }
+                        String[] oldPathList=pasrePath(childData);
+                        String[] newPathList=pasrePath(childData1);
+                        cache.replaceServiceAddress(oldPathList[1],oldPathList[2],newPathList[2]);
                         System.out.println("修改后的数据: " + new String(childData1.getData()));
                         break;
                     case "NODE_DELETED": // 节点删除
-                        String path_d=new String(childData.getPath());
-                        //按照格式 ，读取
-                        String[] pathList_d= path_d.split("/");
+                        String[] pathList_d= pasrePath(childData);
                         if(pathList_d.length<=2) break;
                         else {
                             String serviceName=pathList_d[1];
@@ -79,4 +77,11 @@ public class watchZK {
         //开启监听
         curatorCache.start();
     }
+    //解析节点对应地址
+    public String[] pasrePath(ChildData childData){
+        //获取更新的节点的路径
+        String path=new String(childData.getPath());
+        //按照格式 ，读取
+        return path.split("/");
+    }
 }
\ No newline at end of file
diff --git a/version3/src/main/java/part2/Client/cache/serviceCache.java b/version3/src/main/java/part2/Client/cache/serviceCache.java
index 4d42097..f6c7106 100644
--- a/version3/src/main/java/part2/Client/cache/serviceCache.java
+++ b/version3/src/main/java/part2/Client/cache/serviceCache.java
@@ -27,6 +27,16 @@ public class serviceCache {
             cache.put(serviceName,addressList);
         }
     }
+    //修改服务地址
+    public void replaceServiceAddress(String serviceName,String oldAddress,String newAddress){
+        if(cache.containsKey(serviceName)){
+            List<String> addressList=cache.get(serviceName);
+            addressList.remove(oldAddress);
+            addressList.add(newAddress);
+        }else {
+            System.out.println("修改失败，服务不存在");
+        }
+    }
     //从缓存中取服务地址列表
     public List<String> getServiceListFromCache(String serviceName){
         if(!cache.containsKey(serviceName)) {
diff --git a/version3/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java b/version3/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java
index 61d6a9c..14e9d58 100644
--- a/version3/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java
+++ b/version3/src/main/java/part2/Client/serviceCenter/ZkWatcher/watchZK.java
@@ -17,6 +17,7 @@ public class watchZK {
     //本地缓存
     serviceCache cache;
 
+
     public watchZK(CuratorFramework client,serviceCache  cache){
         this.client=client;
         this.cache=cache;
@@ -39,10 +40,7 @@ public class watchZK {
                 // 节点创建时没有赋予值 create /curator/app1 只创建节点，在这种情况下，更新前节点的 data 为 null，获取不到更新前节点的数据
                 switch (type.name()) {
                     case "NODE_CREATED": // 监听器第一次执行时节点存在也会触发次事件
-                        //获取更新的节点的路径
-                        String path=new String(childData1.getPath());
-                        //按照格式 ，读取
-                        String[] pathList= path.split("/");
+                        String[] pathList= pasrePath(childData1);
                         if(pathList.length<=2) break;
                         else {
                             String serviceName=pathList[1];
@@ -57,12 +55,13 @@ public class watchZK {
                         } else {
                             System.out.println("节点第一次赋值!");
                         }
+                        String[] oldPathList=pasrePath(childData);
+                        String[] newPathList=pasrePath(childData1);
+                        cache.replaceServiceAddress(oldPathList[1],oldPathList[2],newPathList[2]);
                         System.out.println("修改后的数据: " + new String(childData1.getData()));
                         break;
                     case "NODE_DELETED": // 节点删除
-                        String path_d=new String(childData.getPath());
-                        //按照格式 ，读取
-                        String[] pathList_d= path_d.split("/");
+                        String[] pathList_d= pasrePath(childData);
                         if(pathList_d.length<=2) break;
                         else {
                             String serviceName=pathList_d[1];
@@ -79,4 +78,11 @@ public class watchZK {
         //开启监听
         curatorCache.start();
     }
+    //解析节点对应地址
+    public String[] pasrePath(ChildData childData){
+        //获取更新的节点的路径
+        String path=new String(childData.getPath());
+        //按照格式 ，读取
+        return path.split("/");
+    }
 }
\ No newline at end of file
diff --git a/version4/src/main/java/part1/Client/cache/serviceCache.java b/version4/src/main/java/part1/Client/cache/serviceCache.java
index 807d818..6b29acb 100644
--- a/version4/src/main/java/part1/Client/cache/serviceCache.java
+++ b/version4/src/main/java/part1/Client/cache/serviceCache.java
@@ -27,6 +27,16 @@ public class serviceCache {
             cache.put(serviceName,addressList);
         }
     }
+    //修改服务地址
+    public void replaceServiceAddress(String serviceName,String oldAddress,String newAddress){
+        if(cache.containsKey(serviceName)){
+            List<String> addressList=cache.get(serviceName);
+            addressList.remove(oldAddress);
+            addressList.add(newAddress);
+        }else {
+            System.out.println("修改失败，服务不存在");
+        }
+    }
     //从缓存中取服务地址列表
     public List<String> getServiceListFromCache(String serviceName){
         if(!cache.containsKey(serviceName)) {
diff --git a/version4/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java b/version4/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java
index 7861c1b..e23df29 100644
--- a/version4/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java
+++ b/version4/src/main/java/part1/Client/serviceCenter/ZkWatcher/watchZK.java
@@ -17,6 +17,7 @@ public class watchZK {
     //本地缓存
     serviceCache cache;
 
+
     public watchZK(CuratorFramework client,serviceCache  cache){
         this.client=client;
         this.cache=cache;
@@ -39,10 +40,7 @@ public class watchZK {
                 // 节点创建时没有赋予值 create /curator/app1 只创建节点，在这种情况下，更新前节点的 data 为 null，获取不到更新前节点的数据
                 switch (type.name()) {
                     case "NODE_CREATED": // 监听器第一次执行时节点存在也会触发次事件
-                        //获取更新的节点的路径
-                        String path=new String(childData1.getPath());
-                        //按照格式 ，读取
-                        String[] pathList= path.split("/");
+                        String[] pathList= pasrePath(childData1);
                         if(pathList.length<=2) break;
                         else {
                             String serviceName=pathList[1];
@@ -57,12 +55,13 @@ public class watchZK {
                         } else {
                             System.out.println("节点第一次赋值!");
                         }
+                        String[] oldPathList=pasrePath(childData);
+                        String[] newPathList=pasrePath(childData1);
+                        cache.replaceServiceAddress(oldPathList[1],oldPathList[2],newPathList[2]);
                         System.out.println("修改后的数据: " + new String(childData1.getData()));
                         break;
                     case "NODE_DELETED": // 节点删除
-                        String path_d=new String(childData.getPath());
-                        //按照格式 ，读取
-                        String[] pathList_d= path_d.split("/");
+                        String[] pathList_d= pasrePath(childData);
                         if(pathList_d.length<=2) break;
                         else {
                             String serviceName=pathList_d[1];
@@ -79,4 +78,11 @@ public class watchZK {
         //开启监听
         curatorCache.start();
     }
+    //解析节点对应地址
+    public String[] pasrePath(ChildData childData){
+        //获取更新的节点的路径
+        String path=new String(childData.getPath());
+        //按照格式 ，读取
+        return path.split("/");
+    }
 }
\ No newline at end of file