Background系统

一、背景

在许多开发需求中都解析xml文件的需求，对于规格复杂的xml文件，方法很多主要有JDK原生dom形式，SAX形式，DOM4J ，JAXB 4种方式，但是JAXB（Java Architecture for XML Binding) 是一个业界的标准，是一项可以根据XML Schema产生Java类的技术。因此本文主要介绍运用Springboot系统结合 JAXB技术，制作定时任务解析指定文件夹内的xml文件并且保存相应的操作记录到数据库当中。可以更好的优化和解决解析规格复杂xml的问题。

二、Background系统介绍

(一)结构介绍

Background是一个SpringBoot项目主要是由服务实现层的service，SechduleService和各个由xml各个节点对应的实体类Bean构成。

(二)功能介绍

1、JAXB

全称是Java Architecture for XML Binding简称JAXB允许Java开发人员将Java类映射为XML表示方式。JAXB提供两种主要特性：将一个Java对象序列化为XML，以及反向操作，将XML解析成Java对象。换句话说，JAXB允许以XML格式存储和读取数据，而不需要程序的类结构实现特定的读取XML和保存XML的代码。
当规格复杂且经常变化时JAXB特别有用。JAXB官网 API链接文档

2、Background

其核心定时读取指定目录文件，读取里面数据，将成功的文件移动到指定文件夹，记录操作记录到数据库。
其流程图如下所示

三、例子

运用jaxb技术可以很好实现java对象和xml的转换，首先我们约定好规则：
定时读取指定文件夹的内容，然后成功读取则把文件重新命名移动到成功文件夹，失败则直接移动到失败的文件夹
规则配置如下
#incoming shipment
cnshipment.pollingTime=0/10 * * * * ?
shipment.path.in=file:C:/FMS/background/polosap/incoming/cnShipment
shipment.path.success=file:C:/FMS/background/polosap/incoming/completed/cnShipment
shipment.path.fail=file:C:/FMS/background/polosap/incoming/failed/cnShipment

比如我们要解析BlueWave_20190727101739.xml文件

1.1 首先：运用JAXB技术创建出和xml文件对应的PO文件，运用jaxb的注解对应到xml文件的根元素；

简单说明一下jaxb常用的注解如下
@XmlRootElement(name = “Country”)
将Java类或枚举类型映射成XML中根元素，设置name属性的值可指定义根元素名称，不设置则默认为类型首字母小写的名称。
@XmlType(propOrder = {“name”, “capital”, “population”, “foundationTime”})
将Java类后枚举类型映射到XML模式类型，设置propOrder可以指定生成XML中各元素的先后顺序。
@XmlElement(name = “CFoundationTime”)
将JavaBean中的字段值映射到XML元素，设置name属性的值可指定XML元素的名称。
@XmlAttribute(name = “CRank”, required = false)
将JavaBean中的字段映射到XML中元素的属性，设置name属性的值可指定xml中元素属性的名称；
至于required属性，官方文档是说指定 XML 模式属性是可选的还是必需的，不是特别理解。
@XmlElementWrapper(name = “CountryWrapper”)
为集合生成xml包装器元素，简单来讲就是使XML元素更有层次感，更美观，该注解只能用在集合上。

因此此创建的java文件和xml文件对应根元素如下图所示：
主要jaxb的po对应xml原理相近因此主要展示前面两个PO，主要了解其中创建PO的规律
比如Shipments.java文件和xml对应如下

Shipment.java和xml文件对应如下

1.2 然后运用到的是Spring注解，首先通过运用@Service创建的服务层组件，创建ShipmentMonitorService.java文件。主要代码如下

package com.ontop.job.geodis.monitor;import java.io.File;
import java.io.FileInputStream;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;import javax.transaction.Transactional;import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;import com.ontop.job.geodis.common.ResourceService;
import com.ontop.job.geodis.common.Utils;
import com.ontop.job.geodis.dao.CartonDao;
import com.ontop.job.geodis.dao.OrderDao;
import com.ontop.job.geodis.dao.ShipmentDao;
import com.ontop.job.geodis.entity.shipment.CartonPO;
import com.ontop.job.geodis.entity.shipment.OrderPO;
import com.ontop.job.geodis.entity.shipment.ShipmentPO;
import com.ontop.job.geodis.mapping.shipment.CartonType;
import com.ontop.job.geodis.mapping.shipment.OrderType;
import com.ontop.job.geodis.mapping.shipment.ShipmentType;
import com.ontop.job.geodis.mapping.shipment.Shipments;
import com.ontop.job.geodis.service.ProcessLogService;@Service
public class ShipmentMonitorService {private static final Logger logger = LoggerFactory.getLogger(ShipmentMonitorService.class);@Value("${shipment.path.in}")private String in;@Value("${shipment.path.success}")private String success;@Value("${shipment.path.fail}")private String fail;@Autowiredprivate ResourceService resourceService;@Autowiredprivate ShipmentDao shipmentDao;@Autowiredprivate OrderDao orderDao;@Autowiredprivate CartonDao cartonDao;@Autowiredprivate ProcessLogService logService;@Scheduled(cron = "${cnshipment.pollingTime}")public void checkInputFile() {File inFolder = resourceService.getFile(in);if (inFolder == null || !inFolder.isDirectory()) {return;}File[] fileList = inFolder.listFiles();for (int i = 0; i < fileList.length; i++) {File xmlFile = fileList[i];if (xmlFile.isDirectory()) {continue;}if (!FilenameUtils.isExtension(xmlFile.getAbsolutePath(), "xml")) {File failFolder = resourceService.getFile(fail);String path = failFolder.getAbsolutePath();String fileName = Utils.renameAndMove(xmlFile, path);logService.shipmentError(fail, fileName);logger.warn(String.format("It's not an XML file, filePath: %s", xmlFile.getAbsolutePath()));continue;}//check if file proceeded or notif(checkProcessFile(xmlFile.getName())) {processXml(xmlFile);}else {File failFolder = resourceService.getFile(fail);String path = failFolder.getAbsolutePath();String fileName = Utils.renameAndMove(xmlFile, path);logService.shipmentError(fail, fileName);}}}private boolean checkProcessFile(String fileName) {List<ShipmentPO> list=shipmentDao.findByFilename(fileName);if(CollectionUtils.isEmpty(list)) {return true;}for(ShipmentPO shipment:list) {if("W".equals(shipment.getStatus())||"C".equals(shipment.getStatus())){return false;}}return true;}public void processXml(File readFile) {Shipments shipments = null;try {FileInputStream inputStream = new FileInputStream(readFile);shipments = Utils.unmarshal(inputStream, Shipments.class);} catch (Exception e) {File failFolder = resourceService.getFile(fail);String path = failFolder.getAbsolutePath();String fileName = Utils.renameAndMove(readFile, path);logService.shipmentError(fail, fileName);return;}ShipmentPO po = shipmentToShipmentPO(shipments);po.setFilename(readFile.getName());saveShipment(po, shipments.getShipment());File successFolder = resourceService.getFile(success);String path = successFolder.getAbsolutePath();String newFileName = Utils.renameAndMove(readFile, path);logService.shipmentSuccess(success, newFileName);}@Transactionalprivate void saveShipment(ShipmentPO shipment, ShipmentType shipmentType) {ShipmentPO savedShipment = shipmentDao.save(shipment);populateOrders(savedShipment, shipmentType);}private ShipmentPO shipmentToShipmentPO(Shipments shipments) {ShipmentPO shipmentPo = new ShipmentPO();ShipmentType shipmentType = shipments.getShipment();populateShipment(shipmentPo, shipmentType);return shipmentPo;}private void populateShipment(ShipmentPO shipmentPo, ShipmentType shipmentType) {shipmentPo.setCarrier(shipmentType.getCarrier());shipmentPo.setCreatedate(new Date());shipmentPo.setShipmentNumber(shipmentType.getShipmentNumber());shipmentPo.setYear(shipmentType.getShipmentYear());shipmentPo.setStatus("W");if (StringUtils.isNoneBlank(shipmentType.getShipmentDate())) {try {Date date = DateUtils.parseDate(shipmentType.getShipmentDate(), "yyyy/MM/dd HH:mm:ss");shipmentPo.setShipmentDate(date);} catch (ParseException e) {System.out.println(shipmentType.getShipmentDate() + " is not like  'yyyy/MM/dd HH:mm:ss ' ");}}shipmentPo.setWarehouse(shipmentType.getWarehouseFrom());//populateOrders(shipmentPo, shipmentType);}private void populateOrders(ShipmentPO shipmentPo, ShipmentType shipmentType) {//ArrayList<OrderPO> orderList = new ArrayList<OrderPO>();SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");for (OrderType order : shipmentType.getOrders().getOrder()) {OrderPO po = new OrderPO();//po.setShipment(shipmentPo);po.setIcaId(shipmentPo.getId());po.setAddress(order.getAddress());po.setCity(order.getCity().toString());po.setCompanyName(order.getCompanyName());po.setCompanyName2(order.getCompanyName2());po.setCountry(order.getCountry());po.setIntordnum(order.getIntOrdNum());po.setOrderNumber(order.getOrderNumber());po.setBrand(order.getBrand());if (StringUtils.isNoneBlank(order.getDeliveryDate())) {try {Date deliveryDate = formatter.parse(order.getDeliveryDate());po.setDeliveryDate(deliveryDate);} catch (ParseException e) {System.out.println(order.getDeliveryDate() + " is not like  ' dd-MM-yyyy ' ");}}OrderPO savedOrder = orderDao.save(po);populateCartons(shipmentPo, savedOrder, order);// orderList.add(po);}//shipmentPo.setOrders(orderList);}private void populateCartons(ShipmentPO shipmentPo, OrderPO orderPo, OrderType order) {//ArrayList<CartonPO> cartonList = new ArrayList<CartonPO>();for (CartonType carton : order.getCartons().getCarton()) {CartonPO po = new CartonPO();po.setCartonNumber(carton.getCartonNumber());po.setHeight(Double.parseDouble(carton.getHeight()));po.setLength(Double.parseDouble(carton.getLength()));po.setQuantity(Double.parseDouble(carton.getQuantity()));po.setWeight(Double.parseDouble(carton.getWeight()));po.setWidth(Double.parseDouble(carton.getWidth()));//po.setShipment(shipmentPo);//po.setOrder(orderPo);po.setIcaId(orderPo.getIcaId());po.setIcoId(orderPo.getId());cartonDao.save(po);//cartonList.add(po);}//orderPo.setCartons(cartonList);}
}

1.3 最后只需启动springboot的启动类，系统将自动扫描目标文件解析xml文件或者运行ShipmentMonitorService的一个测试类也可以

主要测试类代码如下：

package com.ontop.job.geodis;import java.io.File;
import java.io.IOException;import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.junit4.SpringRunner;import com.ontop.job.geodis.common.ResourceService;
import com.ontop.job.geodis.dao.ShipmentDao;
import com.ontop.job.geodis.monitor.ShipmentMonitorService;@SpringBootTest
@RunWith(SpringRunner.class)
public class ShipmentMonitorServiceTest {@Autowiredprivate ResourceService resource;@Autowiredprivate ShipmentMonitorService shipmentMonitorService;@Autowiredprivate ShipmentDao shipmentDao;@Test@Rollbackpublic void checkInputFileTest() throws IOException {TestCommon.clean(this.getClass().getClassLoader());System.out.println(shipmentDao.count());File rawFile = resource.getFile("classpath:\\xml\\xml\\BlueWave_20190727101739.xml");//        File rawFile = resource.getFile("classpath:\\xml\\xml\\error.xml");File beTest = resource.getFile("classpath:\\xml\\in");System.out.println(beTest.getAbsolutePath());//FileUtils.copyFile(rawFile, new File(beTest.getAbsolutePath() + "\\test.xml"));shipmentMonitorService.checkInputFile();long count = shipmentDao.count();System.out.println(count);//assertEquals(1, count);}
}

最后附上BlueWave_20190727101739.xml的内容

<?xml version="1.0" encoding="UTF-8"?>
<Shipments><Shipment><ShipmentNumber>21877</ShipmentNumber><ShipmentYear>2019</ShipmentYear><ShipmentDate>2019/07/27 10:17:37</ShipmentDate><Carrier>BWL - LTL</Carrier><Orders><Order><OrderNumber>3202622234</OrderNumber><Address>上海市青浦区沪青平公路2888号A区A102及A104店铺</Address><City /><State /><Zip>201704</Zip><Country /><IntOrdNum>198343</IntOrdNum><IntOrdYear>2019</IntOrdYear><CompanyName>AO.上海青浦</CompanyName><CompanyName2>Larry Lu</CompanyName2><Brand>Giorgio Armani Shanghai</Brand><DeliveryDate>27-07-2019</DeliveryDate><Cartons><Carton><CartonNumber>015222021</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>20.00</Height><Weight>0.00</Weight><Quantity>10.00</Quantity></Carton><Carton><CartonNumber>015222042</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>29.00</Quantity></Carton></Cartons></Order><Order><OrderNumber>3202622254</OrderNumber><Address>上海市浦东新区卓耀路58弄1-365号F11F12F13店铺</Address><City /><State /><Zip>200120</Zip><Country /><IntOrdNum>198360</IntOrdNum><IntOrdYear>2019</IntOrdYear><CompanyName>AO.上海浦东</CompanyName><CompanyName2>Betty Chen</CompanyName2><Brand>Giorgio Armani Shanghai</Brand><DeliveryDate>28-07-2019</DeliveryDate><Cartons><Carton><CartonNumber>015222012</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>5.00</Quantity></Carton></Cartons></Order><Order><OrderNumber>3202622252</OrderNumber><Address>上海市浦东新区卓耀路58弄1-365号F11F12F13店铺</Address><City /><State /><Zip>200120</Zip><Country /><IntOrdNum>198358</IntOrdNum><IntOrdYear>2019</IntOrdYear><CompanyName>AO.上海浦东</CompanyName><CompanyName2>Betty Chen</CompanyName2><Brand>Giorgio Armani Shanghai</Brand><DeliveryDate>26-07-2019</DeliveryDate><Cartons><Carton><CartonNumber>015222022</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>23.00</Quantity></Carton><Carton><CartonNumber>015222051</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>20.00</Quantity></Carton><Carton><CartonNumber>015222064</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>25.00</Quantity></Carton><Carton><CartonNumber>015222071</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>43.00</Quantity></Carton><Carton><CartonNumber>015222080</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>32.00</Quantity></Carton><Carton><CartonNumber>015222081</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>42.00</Quantity></Carton><Carton><CartonNumber>015222093</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>18.00</Quantity></Carton><Carton><CartonNumber>015222097</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>7.00</Quantity></Carton><Carton><CartonNumber>015222100</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>24.00</Quantity></Carton><Carton><CartonNumber>015222103</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>14.00</Quantity></Carton><Carton><CartonNumber>015222105</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>30.00</Quantity></Carton><Carton><CartonNumber>015302560</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>11.00</Quantity></Carton><Carton><CartonNumber>015302563</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>10.00</Quantity></Carton><Carton><CartonNumber>015302569</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>13.00</Quantity></Carton><Carton><CartonNumber>015302570</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>10.00</Quantity></Carton><Carton><CartonNumber>015302576</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>9.00</Quantity></Carton><Carton><CartonNumber>015302581</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>10.00</Quantity></Carton><Carton><CartonNumber>015302584</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>14.00</Quantity></Carton><Carton><CartonNumber>015302592</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>11.00</Quantity></Carton><Carton><CartonNumber>015302593</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>9.00</Quantity></Carton><Carton><CartonNumber>015302600</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>8.00</Quantity></Carton><Carton><CartonNumber>015302611</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>6.00</Quantity></Carton></Cartons></Order><Order><OrderNumber>3202622260</OrderNumber><Address>上海市浦东新区申迪东路88号M3.1店铺</Address><City /><State /><Zip /><Country /><IntOrdNum>198367</IntOrdNum><IntOrdYear>2019</IntOrdYear><CompanyName>AO.上海迪斯尼</CompanyName><CompanyName2>Cherry Zhu 13402029020</CompanyName2><Brand>Giorgio Armani Shanghai</Brand><DeliveryDate>27-07-2019</DeliveryDate><Cartons><Carton><CartonNumber>015222043</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>31.00</Quantity></Carton><Carton><CartonNumber>015222053</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>33.00</Quantity></Carton><Carton><CartonNumber>015222107</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>40.00</Height><Weight>0.00</Weight><Quantity>47.00</Quantity></Carton><Carton><CartonNumber>015222109</CartonNumber><Length>60.00</Length><Width>40.00</Width><Height>20.00</Height><Weight>0.00</Weight><Quantity>5.00</Quantity></Carton><Carton><CartonNumber>015302568</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>15.00</Quantity></Carton><Carton><CartonNumber>015302583</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>3.00</Quantity></Carton><Carton><CartonNumber>015302586</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>12.00</Quantity></Carton><Carton><CartonNumber>015302597</CartonNumber><Length>93.00</Length><Width>56.00</Width><Height>31.00</Height><Weight>0.00</Weight><Quantity>5.00</Quantity></Carton></Cartons></Order><Order><OrderNumber>3202622233</OrderNumber><Address>上海市青浦区沪青平公路2888号A区A102及A104店铺</Address><City /><State /><Zip>201704</Zip><Country /><IntOrdNum>198341</IntOrdNum><IntOrdYear>2019</IntOrdYear><CompanyName>AO.上海青浦</CompanyName><CompanyName2>Larry Lu</CompanyName2><Brand>Giorgio Armani 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