这篇文章主要介绍了Dom4j解析xml复杂多节点报文方式，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教
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Dom4j解析xml复杂多节点报文方式
Dom4j解析xml复杂多节点报文
XML是一种通用的数据交换格式,它的平台无关性、语言无关性、系统无关性、给数据集成与交互带来了极大的方便。XML在不同的语言环境中解析方式都是一样的,只不过实现的语法不同而已。
XML的解析方式分为四种
1、DOM解析
2、SAX解析
3、JDOM解析
4、DOM4J解析
其中前两种属于基础方法，是官方提供的平台无关的解析方式；后两种属于扩展方法，它们是在基础的方法上扩展出来的，只适用于java平台。
本文介绍的是DOM4J方式解析
依赖jar包：
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<dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version></dependency> |
xml报文如下：
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Root> <SttlCntNb>2</SttlCntNb> <DebitCntAmt>CNY0.00</DebitCntAmt> <CreditCntAmt>CNY4700.00</CreditCntAmt> <SttlList> <SttlInf> <SttlReptFlg>2018052500170139</SttlReptFlg> <SttlDCFlg>2</SttlDCFlg> <SttlAmt>CNY100.00</SttlAmt> <BatchList> <BatchInf> <BatchId>B201805230015</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY100.00</BatchNetAmt> <SubItemList> <SubItemInf>0113|C3228644000018|04|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0120|C3228640000020|05|CNY50.00|1|CNY0.00|0|</SubItemInf> <SubItemInf>0114|C3228640000029|07|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0115|C3228640000019|06|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0111|C3228640000016|03|CNY0.00|0|CNY10.00|1|</SubItemInf> <SubItemInf>0110|C3228644000016|01|CNY0.00|0|CNY110.00|1|</SubItemInf> <SubItemInf>0112|C3228644000017|99|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0110|C3228644000016|02|CNY0.00|0|CNY10.00|1|</SubItemInf> </SubItemList> </BatchInf> </BatchList> </SttlInf> <SttlInf> <SttlReptFlg>2018052500170138</SttlReptFlg> <SttlDCFlg>2</SttlDCFlg> <SttlAmt>CNY4600.00</SttlAmt> <BatchList> <BatchInf> <BatchId>B201805240001</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0126|C1010511003703|00|CNY0.00|4|CNY0.00|0|</SubItemInf> <SubItemInf>0125|C1010211000012|01|CNY0.00|8|CNY0.00|0|</SubItemInf> <SubItemInf>0126|C1010211000012|01|CNY0.00|8|CNY0.00|0|</SubItemInf> <SubItemInf>0124|C1010211000012|01|CNY0.00|8|CNY0.00|0|</SubItemInf> <SubItemInf>0123|C1010211000012|01|CNY0.00|4|CNY0.00|0|</SubItemInf> <SubItemInf>0110|C1010211000012|01|CNY0.00|0|CNY400.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240002</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0125|C1010211000012|00|CNY400.00|4|CNY0.00|0|</SubItemInf> <SubItemInf>0110|C1010211000012|00|CNY0.00|0|CNY800.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240003</BatchId> <BatchDCFlg>1</BatchDCFlg> <BatchNetAmt>CNY0.00</BatchNetAmt> <SubItemList> <SubItemInf>0120|C1010211000012|00|CNY0.00|4|CNY0.00|0|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240004</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY1200.00</BatchNetAmt> <SubItemList> <SubItemInf>0112|C1010211000012|01|CNY0.00|0|CNY1200.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240005</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0113|C1010211000012|00|CNY0.00|0|CNY400.00|4|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240006</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0114|C1010211000012|00|CNY0.00|0|CNY400.00|4|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240007</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY200.00</BatchNetAmt> <SubItemList> <SubItemInf>0115|C1010211000012|01|CNY0.00|0|CNY200.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240008</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY600.00</BatchNetAmt> <SubItemList> <SubItemInf>0115|C1010211000012|01|CNY0.00|0|CNY600.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240009</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0110|C1010511003703|00|CNY0.00|0|CNY400.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240010</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY1200.00</BatchNetAmt> <SubItemList> <SubItemInf>0111|C1010211000012|01|CNY0.00|0|CNY1200.00|4|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240012</BatchId> <BatchDCFlg>1</BatchDCFlg> <BatchNetAmt>CNY1200.00</BatchNetAmt> <SubItemList> <SubItemInf>0116|C1010511003703|00|CNY1200.00|4|CNY0.00|0|</SubItemInf> </SubItemList> </BatchInf> </BatchList> </SttlInf> </SttlList></Root> |
主要核心代码如下
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String saveFile为本地保存xml报文的路径。 -
AccountInfoEntityResp为解析xml后封装的obj实体对象。
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/** * 解析xml文件并 */ public String Dom4jGetXML(String saveFile){ //返回的Entity对象 String xmlContents = new String(); // 创建SAXReader的对象reader SAXReader reader = new SAXReader(); try {// Resource resource = new ClassPathResource("accountInfo/"+accountDate+".xml"); Resource resource = new ClassPathResource(saveFile); File file = null; try{ file = resource.getFile(); }catch (Exception e){ //抛出异常 } // 通过reader对象的read方法加载books.xml文件,获取docuemnt对象。 Document document = reader.read(file); // 通过document对象获取根节点bookstore Element rootElement = document.getRootElement(); //document转换为String字符串 xmlContents = document.asXML(); //解析xml文件并转换为obj } catch (DocumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } return xmlContents; } |
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/** * 解析对账文件xml，转换为obj对象返回前段 * @Descriptions: 循环遍历所有子节点,保存每个节点的值 * @Return: AccountInfoEntity */ public AccountInfoEntityResp getNodes(Element node){ AccountInfoEntityResp accountInfoEntityResp = new AccountInfoEntityResp(); List<SttlInf> SttlList = new ArrayList<SttlInf>(); //获得指定节点下面的子节点，首先要知道自己要操作的节点。 Element SttlCntNbElem = node.element("SttlCntNb"); //获取SttlCntNb String SttlCntNb = SttlCntNbElem.getTextTrim(); //获取DebitCntAmt Element DebitCntAmtElem = node.element("DebitCntAmt"); String DebitCntAmt = DebitCntAmtElem.getTextTrim(); //获取CreditCntAmt Element CreditCntAmtElem = node.element("CreditCntAmt"); String CreditCntAmt = CreditCntAmtElem.getTextTrim(); accountInfoEntityResp.setSttlCntNb(Integer.valueOf(SttlCntNb)); BigDecimal CreditCntAmtVal = null; if(CreditCntAmt != null && !CreditCntAmt.isEmpty()){ CreditCntAmtVal = new BigDecimal(CreditCntAmt.replace("CNY", "")); } accountInfoEntityResp.setCreditCntAmt(CreditCntAmtVal); BigDecimal DebitCntAmtval = null; if(DebitCntAmt != null && !DebitCntAmt.isEmpty()){ DebitCntAmtval = new BigDecimal(DebitCntAmt.replace("CNY", "")); } accountInfoEntityResp.setDebitCntAmt(DebitCntAmtval); //获取SttlList Element SttlListEle = node.element("SttlList"); //获取SttlInf Element SttlInfEle = SttlListEle.element("SttlInf"); List<Element> SttlInfList = SttlListEle.elements(); //遍历SttlInfList节点 String SttlReptFlg = ""; Integer SttlDCFlg = null; BigDecimal SttlAmt = null; for(Element e : SttlInfList){ List<BatchInf> BatchList = new ArrayList<BatchInf>(); SttlInf sttlInf = new SttlInf(); //SttlInf下的子节点 Element SttlReptFlgEle = e.element("SttlReptFlg"); SttlReptFlg = SttlReptFlgEle.getTextTrim(); Element SttlDCFlgEle = e.element("SttlDCFlg"); SttlDCFlg = Integer.valueOf(SttlDCFlgEle.getTextTrim()); Element SttlAmtEle = e.element("SttlAmt"); SttlAmt = new BigDecimal(SttlAmtEle.getTextTrim().replace("CNY", "")); //设值 sttlInf.setSttlAmt(SttlAmt); sttlInf.setSttlDCFlg(SttlDCFlg); sttlInf.setSttlReptFlg(SttlReptFlg); //获取BatchList节点 Element BatchListEle = e.element("BatchList"); //获取BatchInf List<Element> BatchInfList = BatchListEle.elements(); for(Element e2 : BatchInfList){ List<SubItemInf> SubItemList = new ArrayList<SubItemInf>(); BatchInf batchInf = new BatchInf(); String BatchId = ""; Integer BatchDCFlg = null; BigDecimal BatchNetAmt = null; Element BatchIdEle = e2.element("BatchId"); BatchId = BatchIdEle.getTextTrim(); Element BatchDCFlgEle = e2.element("BatchDCFlg"); BatchDCFlg = Integer.valueOf(BatchDCFlgEle.getTextTrim()); Element BatchNetAmtEle = e2.element("BatchNetAmt"); BatchNetAmt = new BigDecimal(BatchNetAmtEle.getTextTrim().replace("CNY", "")); batchInf.setBatchDCFlg(BatchDCFlg); batchInf.setBatchId(BatchId); batchInf.setBatchNetAmt(BatchNetAmt); //获取SubItemList节点 Element SubItemListEle = e2.element("SubItemList"); //获取BatchInf List<Element> SubItemInfList = SubItemListEle.elements(); for(Element e3 : SubItemInfList){ SubItemInf subItemInf = new SubItemInf(); String subItem = ""; subItem = e3.getTextTrim().replace("CNY", ""); subItemInf.setSubItemInf(subItem); SubItemList.add(subItemInf); } batchInf.setSubItemList(SubItemList); BatchList.add(batchInf); } sttlInf.setBatchList(BatchList); SttlList.add(sttlInf); } accountInfoEntityResp.setSttlList(SttlList); return accountInfoEntityResp; } |
dom4j解析多层xml
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package com.bessky.hrmis.test;import java.util.Iterator;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.SAXReader;public class Dom4JDemo { public static void main(String[] args) throws Exception { // 1.创建Reader对象 SAXReader reader = new SAXReader(); String str = "<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>\r\n" + " <cas:authenticationSuccess>\r\n" + " <cas:user>hanke_tom</cas:user>\r\n" + " <cas:attributes>\r\n" + " <cas:credentialType>tom</cas:credentialType>\r\n" + " <cas:logout_url>http://192.168.1.5:8080/sso/logout</cas:logout_url>\r\n" + " <cas:isFromNewLogin>false</cas:isFromNewLogin>\r\n" + " <cas:authenticationDate>2019-11-26T17:47:55.789+08:00[Asia/Shanghai]</cas:authenticationDate>\r\n" + " <cas:user_id>01</cas:user_id>\r\n" + " <cas:authenticationMethod>TomAuthenticationHandler</cas:authenticationMethod>\r\n" + " <cas:successfulAuthenticationHandlers>TomAuthenticationHandler</cas:successfulAuthenticationHandlers>\r\n" + " <cas:name>张三</cas:name>\r\n" + " <cas:longTermAuthenticationRequestTokenUsed>false</cas:longTermAuthenticationRequestTokenUsed>\r\n" + " <cas:job_number>00001</cas:job_number>\r\n" + " <cas:username>hanke_tom</cas:username>\r\n" + " </cas:attributes>\r\n" + " </cas:authenticationSuccess>\r\n" + "</cas:serviceResponse>"; // 2.加载xml Document document = DocumentHelper.parseText(str); // 3.获取根节点 Element rootElement = document.getRootElement(); Iterator iterator = rootElement.elementIterator(); System.out.println("根节点：" + rootElement.getName()); // 拿到根节点的名称 Iterator bbbb = rootElement.elementIterator("authenticationSuccess"); while (bbbb.hasNext()) { Element recordEless = (Element) bbbb.next(); Iterator cccc = recordEless.elementIterator("attributes"); while (cccc.hasNext()) { Element itemEle = (Element) cccc.next(); String username = itemEle.elementTextTrim("job_number"); System.err.println("---------"+username); } } }} |
如果后面还有子级继续while向下取数据
以上为个人经验，希望能给大家一个参考，也希望大家多多支持米米素材网。
原文链接：https://blog.csdn.net/xuri24/article/details/83113340
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