添加获取PSN接口

src/main/java/com/uas/eis/serviceImpl/MESHelperServiceImpl.java

@@ -891,7 +891,7 @@ public class MESHelperServiceImpl implements MESHelperService {
 			rmap.put("msl_sncode",msl_sncode);
 			return rmap;
 		}else{
-			oErrMessage = "工单号不能为空";
+			oErrMessage = "无可分配号段";
 			rmap.put("oErrMessage",oErrMessage);
 			return rmap;
 		}