final 关键字添加

src/main/java/com/sundata/internalevaluation/calc/calcUnit/RuleCalcUnit.java

@@ -28,7 +28,7 @@ public class RuleCalcUnit extends CalcUnit {
 
     private static final Logger log = LoggerFactory.getLogger(RuleCalcUnit.class);
 
-    private SysReqRule reqRule;
+    private final SysReqRule reqRule;
 
     private final IndexConfigService indexConfigService;