处理上架时错误信息过多，字段长度不够的问题。

src/main/java/com/uas/platform/b2c/prod/commodity/model/ReleaseProductByBatch.java

@@ -385,7 +385,7 @@ public class ReleaseProductByBatch implements Serializable {
 	/**
 	 * 错误的信息
 	 */
-	@Column(name = "rel_errmsg")
+	@Column(name = "rel_errmsg", length = 4000)
 	private String errmsg;
 
 	/**