diff --git a/power-service/src/main/java/com/manage/service/cache/CacheManager.java b/power-service/src/main/java/com/manage/service/cache/CacheManager.java
index 2f1c914..8c33df6 100644
--- a/power-service/src/main/java/com/manage/service/cache/CacheManager.java
+++ b/power-service/src/main/java/com/manage/service/cache/CacheManager.java
@@ -5,7 +5,7 @@ import com.manage.vo.Power_UserVo;
 import java.util.*;
 
 public class CacheManager {
-    private static HashMap cacheMap = new HashMap();
+    private static HashMap<String,Cache> cacheMap = new HashMap<String,Cache>();
     //添加异常数量
     public static void addExcCount(String type){
         if("noExc".equals(type)){
@@ -93,14 +93,15 @@ public class CacheManager {
     //根据用户信息删除缓存
     private static void removeCacheByObject(Power_UserVo obj,String token) {
         try {
-            Iterator i = cacheMap.entrySet().iterator();
-            while (i.hasNext()) {
-                Map.Entry<String,Object> entry = (Map.Entry) i.next();
-                Cache cache = CacheManager.getCacheInfo(entry.getKey());
-                if(null != cache.getValue() && cache.getValue() instanceof  Power_UserVo){
-                    Power_UserVo o = (Power_UserVo)cache.getValue();
-                    if (obj.getUserName().equals(o.getUserName()) && !entry.getKey().equals(token)) {
-                        clearOnly(entry.getKey());
+            if(cacheMap.size() > 0) {
+                for (Map.Entry<String, Cache> map : cacheMap.entrySet()) {
+                    Cache cache = CacheManager.getCacheInfo(map.getKey());
+                    assert cache != null;
+                    if (null != cache.getValue() && cache.getValue() instanceof Power_UserVo) {
+                        Power_UserVo o = (Power_UserVo) cache.getValue();
+                        if (obj.getUserName().equals(o.getUserName()) && !map.getKey().equals(token)) {
+                            clearOnly(map.getKey());
+                        }
                     }
                 }
             }