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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

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://HdhCmsTestyale.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。

原文链接：https://blog.csdn.net/xuri24/article/details/83113340

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