修复Product.java尾部空格问题

grademanagement-SpringMVCProject/src/com/ssm/entity/Product.java

@@ -14,8 +14,8 @@ public class Product {
     public Product() {
     }
 
-    public Product(Integer productId, String productName, String isPopular, 
-                   Double marketPrice, Double salesPrice, String productImage, 
+    public Product(Integer productId, String productName, String isPopular,
+                   Double marketPrice, Double salesPrice, String productImage,
                    String categoryName, String description, String listDate) {
         this.productId = productId;
         this.productName = productName;