修改规格字段的字段长度

src/main/java/com/uas/platform/b2b/model/Product.java

@@ -51,7 +51,7 @@ public class Product {
 	/**
 	 * 产品规格
 	 */
-	@Column(name = "pr_spec")
+	@Column(name = "pr_spec", length = 500)
 	private String spec;
 
 	/**