1.非空判断

zs-manager/src/main/java/com/ruoyi/tjfx/service/impl/ReportServiceImpl.java

@@ -87,7 +87,7 @@ public class ReportServiceImpl implements ReportService {
     }
 
     private String calcRate(BigDecimal now, BigDecimal prev) {
-        if (prev == null || prev.compareTo(BigDecimal.ZERO) == 0) return "0";
+        if (now==null||now.compareTo(BigDecimal.ZERO) == 0||prev == null || prev.compareTo(BigDecimal.ZERO) == 0) return "0";
         return now.subtract(prev).divide(prev, 4, BigDecimal.ROUND_HALF_UP).multiply(new BigDecimal(100)).setScale(2, BigDecimal.ROUND_HALF_UP).toString();
     }