坦克大战（一期）-设计模式-备忘录模式1.2

src/main/java/com/msb/model/GameModel.java

@@ -138,6 +138,7 @@ public class GameModel {
         } catch (IOException e) {
             e.printStackTrace();
         } finally {
+            if(null != oos) {
                 try {
                     oos.close();
                 } catch (IOException e) {
@@ -145,6 +146,7 @@ public class GameModel {
                 }
             }
         }
+    }
 
     public void load() {
         File file = new File("F:\\bingor\\temp\\tank.data");
@@ -156,13 +158,14 @@ public class GameModel {
         } catch (IOException | ClassNotFoundException e) {
             e.printStackTrace();
         } finally {
+            if(null != ois) {
                 try {
                     ois.close();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             }
-
+        }
     }
 
 }