双重锁防止多次初始化

haoban-manage3-service/src/main/java/com/gic/haoban/manage/service/dao/mapper/content/holo/HoloDataSource.java

@@ -80,7 +80,11 @@ public class HoloDataSource implements InitializingBean, DisposableBean {
 
     public HoloClient getClient() {
         if (this.client == null) {
-            this.init();
+            synchronized (this) {
+                if (this.client == null) {
+                    this.init();
+                }
+            }
         }
         return this.client;
     }