Maison > Article > développement back-end > xml文件读写实例
这是一个目前在做的项目需要使用的xml文件读写实现。记起来以备后忘和供有需要的同学学习。
xml文件读写类:
import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.logging.Level; import java.util.logging.Logger; import org.jdom.Document; import org.jdom.Element; import org.jdom.JDOMException; import org.jdom.input.SAXBuilder; import org.jdom.output.Format; import org.jdom.output.XMLOutputter; import org.lt.cj.config.entities.ConfigModel; import org.lt.cj.config.entities.TMallConfigModel; import org.lt.cj.core.Seed; public class XMLConfigWriter { /*创建淘宝商城的配置文件*/ public Document buildUpMallDocument(TMallConfigModel missionConfig) throws MissionConfigException, EnterUrlsException { if (missionConfig == null) { throw new MissionConfigException(); } else if (missionConfig.getSeeds().isEmpty()) { return null; } // Create the root element Element rootElement = new Element("website"); /* 设置网站属性 */ /* 设置网站名称 */ rootElement.setAttribute("name", missionConfig.getWebsiteName()); /*设置网站地址*/ rootElement.setAttribute("url", missionConfig.getWebsiteUrl()); //添加任务名称 Element taskElement = new Element("taskName"); taskElement.addContent(missionConfig.getTaskName()); rootElement.addContent(taskElement); //构造种子列表节点 Element seeds = new Element("seeds"); for (int i = 0; i < missionConfig.getSeeds().size(); i++) { Element seedElement = new Element("seed"); Element seedNameElement = new Element("seedName"); seedNameElement.addContent(missionConfig.getSeeds().get(i).getSeedName()); Element seedUrlElement = new Element("seedUrl"); seedUrlElement.addContent(missionConfig.getSeeds().get(i).getUrl()); Element seedSortNameElement = new Element("sortName"); seedSortNameElement.addContent(missionConfig.getSeeds().get(i).getSortName()); seedElement.addContent(seedSortNameElement); seedElement.addContent(seedNameElement); seedElement.addContent(seedUrlElement); seeds.addContent(seedElement); } rootElement.addContent(seeds); //定义匹配的要采集的URL链接fitUrl的节点 Element fiturls = new Element("fitUrls"); for (int i = 0; i < missionConfig.getFitUrlRegs().size(); i++) { Element fitUrl = new Element("fit_url"); fitUrl.addContent(missionConfig.getFitUrlRegs().get(i)); fiturls.addContent(fitUrl); } rootElement.addContent(fiturls);//添加到根节点 //并发工作线程数 Element workingThreadsElement = new Element("workingThreads"); workingThreadsElement.addContent("" + missionConfig.getWorkingThreads()); rootElement.addContent(workingThreadsElement);//添加到根节点 //定义页面编码节点 Element pageEncodingElement = new Element("pageEncoding"); pageEncodingElement.addContent(missionConfig.getPageEncoding()); rootElement.addContent(pageEncodingElement);//添加到根节点 //定义下载图片控制标志节点 Element dwdPhoFlagElement = new Element("dwdPhoFlag"); dwdPhoFlagElement.addContent(missionConfig.getDwdPhoFlag()); rootElement.addContent(dwdPhoFlagElement); //定义原语言节点 Element oriLan = new Element("orien_lan"); oriLan.addContent(missionConfig.getOrigLanguage()); Element transLan = new Element("trans_lan"); transLan.addContent(missionConfig.getTranLanguage()); rootElement.addContent(oriLan);//添加到根节点 rootElement.addContent(transLan);//添加到根节点 //定义匹配抓取信息的产品页面Url节点 Element pageUrlRegs = new Element("pageUrlRegs"); for (int i = 0; i < missionConfig.getPageReg().size(); i++) { Element pageUrl = new Element("pageUrl"); pageUrl.addContent(missionConfig.getFitUrlRegs().get(i)); pageUrlRegs.addContent(pageUrl); } rootElement.addContent(pageUrlRegs);//添加到根节点 Map<String, List<String>> map = missionConfig.getEntityReg(); List<String> list = null; Element pathElements = new Element("pathElements"); //直接循环算啦 //===================================== Iterator iter = map.entrySet().iterator(); while (iter.hasNext()) { Map.Entry e = (Map.Entry) iter.next(); Element element = new Element(e.getKey() + ""); map = missionConfig.getEntityReg(); list = map.get(e.getKey() + ""); for (int i = 0; i < list.size(); i++) { Element path = new Element("path"); path.addContent(list.get(i)); element.addContent(path); } pathElements.addContent(element); } rootElement.addContent(pathElements); /* ===================================================== */ Document myDocument = new Document(rootElement); return myDocument; } /* 创建文档文件 */ public void createConfigFile(Document document, String filepath) { try { /* 定义XML输出器 */ XMLOutputter xmlOutPutter = new XMLOutputter(); xmlOutPutter.setFormat(Format.getPrettyFormat()); File file = new File(filepath); if (!file.exists()) { if (file.createNewFile()) { FileOutputStream fileOutputStream = new FileOutputStream(filepath); xmlOutPutter.output(document, fileOutputStream); return; } } FileOutputStream fileOutputStream = new FileOutputStream(filepath); xmlOutPutter.output(document, fileOutputStream); } catch (java.io.IOException e) { e.printStackTrace(); } } /* 重写文件 */ public void saveTask(String filePath, ConfigModel configModel) { try { TMallConfigModel tMallConfigModel = (TMallConfigModel) configModel; Document document = buildUpMallDocument(tMallConfigModel); if (document != null) { createConfigFile(document, filePath); } } catch (MissionConfigException ex) { Logger.getLogger(XMLConfigWriter.class.getName()).log(Level.SEVERE, null, ex); } catch (EnterUrlsException ex) { Logger.getLogger(XMLConfigWriter.class.getName()).log(Level.SEVERE, null, ex); } } //* xml文件读取方法 */ public TMallConfigModel readMallDocument(String filePath) { TMallConfigModel model = new TMallConfigModel(); SAXBuilder sb = new SAXBuilder(); try { //读取基本配置信息 Document doc = sb.build(filePath); //构造文档对象 Element root = doc.getRootElement(); //获取根元素 String websiteName = root.getAttributeValue("name"); //获取网站名称 String websiteAddr = root.getAttributeValue("url"); //获取网站地址 model.setWebsiteName(websiteName); //设置网站名称 model.setWebsiteUrl(websiteAddr); //设置网站地址 Element taskNameElement = root.getChild("taskName"); //获取任务名内容 String taskName = taskNameElement.getText(); model.setTaskName(taskName); //获取入口种子列表 List<Seed> seedList = new ArrayList(); Element seedsElement = root.getChild("seeds"); List list = seedsElement.getChildren(); for (int i = 0; i < list.size(); i++) { Element element = (Element) seedsElement.getChildren().get(i); Seed seed = new Seed(); Element seedNameElement = element.getChild("seedName"); Element seedUrlElement = element.getChild("seedUrl"); Element seedSortNameElement = element.getChild("sortName"); seed.setSeedName(seedNameElement.getTextTrim()); seed.setUrl(seedUrlElement.getTextTrim()); seed.setSortName(seedSortNameElement.getTextTrim()); Element parentSeedElement = element.getChild("parentSeed"); if (parentSeedElement != null) { Seed parentSeed = new Seed(); Element parentSeedNameElement = parentSeedElement.getChild("seedName"); Element parentSeedUrlElement = parentSeedElement.getChild("seedUrl"); Element parentSeedSortNameElement = parentSeedElement.getChild("sortName"); parentSeed.setSeedName(parentSeedNameElement.getText()); parentSeed.setUrl(parentSeedUrlElement.getTextTrim()); parentSeed.setSortName(parentSeedSortNameElement.getTextTrim()); } seedList.add(seed); } model.setSeeds(seedList); //获取匹配的要抽取的页面的特定部分内容 list = new ArrayList(); Element extractHtmlElement = root.getChild("extractHtml"); if (extractHtmlElement != null) { for (int i = 0; i < extractHtmlElement.getChildren().size(); i++) { Element element = (Element) extractHtmlElement.getChildren().get(i); list.add(element.getText()); } } model.setExtractHtmlReg(list); //获取匹配URLs list = new ArrayList(); Element fitUrlsElement = root.getChild("fitUrls"); for (int i = 0; i < fitUrlsElement.getChildren().size(); i++) { Element element = (Element) fitUrlsElement.getChildren().get(i); list.add(element.getText()); } model.setFitUrlRegs(list); //获取线程数量 Element workingThreadsElement = root.getChild("workingThreads"); String workingCount = workingThreadsElement.getText(); model.setWorkingThreads(Integer.valueOf(workingCount)); //获取解析编码 Element pageEncodingElement = root.getChild("pageEncoding"); String pageEncoding = pageEncodingElement.getText(); model.setPageEncoding(pageEncoding); //获取是否下载图片的标志 Element dwdPhoFlagElement = root.getChild("dwdPhoFlag"); String dphoFlag = dwdPhoFlagElement.getText(); model.setDwdPhoFlag(dphoFlag); //获取语言 Element orien_lanElement = root.getChild("orien_lan"); String orien = orien_lanElement.getText(); model.setOrigLanguage(orien); Element trans_lanElement = root.getChild("trans_lan"); String trans_lan = trans_lanElement.getText(); model.setTranLanguage(trans_lan); //获取URL正则匹配 Element pageUrlRegsElement = root.getChild("pageUrlRegs"); list = new ArrayList(); for (int i = 0; i < pageUrlRegsElement.getChildren().size(); i++) { Element element = (Element) pageUrlRegsElement.getChildren().get(i); list.add(element.getText()); } model.setPageReg(list); //获取余下的匹配规则 Map<String, List<String>> entityReg = new HashMap(); Element pathElements = root.getChild("pathElements"); for (int i = 0; i < pathElements.getChildren().size(); i++) { Element element = (Element) pathElements.getChildren().get(i); List<String> pathList = new ArrayList(); String mapName = element.getName(); for (int j = 0; j < element.getChildren().size(); j++) { Element childElement = (Element) element.getChildren().get(j); pathList.add(childElement.getText()); } entityReg.put(mapName, pathList); } model.setEntityReg(entityReg); } catch (JDOMException ex) { Logger.getLogger(XMLConfigWriter.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(XMLConfigWriter.class.getName()).log(Level.SEVERE, null, ex); } return model; } }
xml文件内容:
<?xml version="1.0" encoding="UTF-8"?> <website name="taobao_mall" url="http://www.tmall.com/?ver=2011b"> <taskName>caiji_tmall_精品男装_T恤</taskName> <seeds> <seed> <sortName>精品男装/T恤</sortName> <seedName>精品男装/T恤</seedName> <seedUrl>http://item.tmall.com/item.htm?id=9351702393</seedUrl> </seed> </seeds> <extractHtml> <path>div class="list item-view item-miniView"</path> </extractHtml> <fitUrls> <fit_url>http://www\.tmall\.com/go/act/tmall/iwanttobuy\.php.*</fit_url> <fit_url>http://list\.tmall\.com/.*</fit_url> <fit_url>http://item\.tmall\.com/item\.htm.*</fit_url> </fitUrls> <workingThreads>1</workingThreads> <pageEncoding>UTF-8</pageEncoding> <orien_lan>zh</orien_lan> <trans_lan>en</trans_lan> <pageUrlRegs> <pageUrl>http://www\.tmall\.com/go/act/tmall/iwanttobuy\.php.*</pageUrl> </pageUrlRegs> <pathElements> <commnents> <path>div class="tb-box tshop-psm tshop-psm-bdetailtabl" id="J_Detail"</path> <path>div id="reviews" class="J_DetailSection" data-reviewApi</path> </commnents> <shopAddr> <path>div class="clearfix tb-header-nav"</path> <path>div class="nav"</path> <path>a href</path> </shopAddr> <productDetail> <path>div id="attributes" class="attributes</path> <path>ul class="attributes-list</path> <path>li</path> </productDetail> <photosPath> <path>div class="tb-detail-bd tb-clear"</path> <path>div class="tb-gallery"</path> <path>div class="tb-booth tb-pic tb-s310"</path> <path>img id="J_ImgBooth" src</path> </photosPath> <category> <path>ul class="mallCrumbs-nav" id="J_crumbs"</path> <path>li class="mallCrumbs-nav-item"</path> </category> <countSold> <path>div class="tb-detail-bd tb-clear"</path> <path>ul class="tb-meta"</path> <path>li class="tb-sold-out tb-clear"</path> </countSold> <shopInfo> <path>div class="shop-intro"</path> <path>div class="extend"</path> <path>li</path> </shopInfo> <despPhos> <path>script</path> </despPhos> <thumbPhosPath> <path>div class="tb-detail-bd tb-clear"</path> <path>div class="tb-gallery"</path> <path>ul id="J_UlThumb" class="tb-thumb tb-clearfix"</path> <path>img src=</path> </thumbPhosPath> <productName> <path>div class="layout grid-s5m0 "</path> <path>div class="tb-detail-hd"</path> <path>a target="_blank" href=</path> </productName> <productPrice> <path>div class="tb-detail-bd tb-clear"</path> <path>ul class="tb-meta"</path> <path>li id="J_StrPriceModBox" class="tb-detail-price tb-clearfix"</path> </productPrice> </pathElements> </website>