digester解析XML的两种步骤

digester解析XML的两种方法

1、xml格式如下，多个<bill>标签

<?xml version="1.0" encoding="GBK"?><sell><bill ss="1"><sn>2010E01234</sn><bt>A123456789,B123456789</bt><oc>abc123</oc><on>方鑫利群专卖</on><pc>20001</pc>                  <!-- //买方编号 --><pn>测试用户</pn><!-- //买方名称 --><pd>1234567890ABCDE</pd>        <!-- //买方卡号 --><ts>7</ts><!-- //总数量 --><tz>5.000</tz><!-- //总重量 --><ta>75.00</ta><!-- //总金额 --><sd>2010-08-20 12:10:10</sd><!-- 销售时间 --><item><cn>白条一级</cn><!-- //品名 --><ct>3</ct><!-- 数量 --><tw>2.000</tw><!-- 重量 --><tp>15.50</tp><!-- 单价 --><tt>30.00</tt><!-- 金额 --><bn>222,333</bn><!-- 酮体编号 --></item><item><cn>白条特级</cn><!-- //品名 --><ct>5</ct><!-- 数量 --><tw>3.000</tw><!-- 重量 --><tp>15.50</tp><!-- 单价 --><tt>45.00</tt><!-- 金额 --><bn>111,332</bn><!-- 酮体编号 --></item>...</bill>...</sell>

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2、采用?digester解析，这里介绍有两种方法

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完整代码如下

package org.mcp.data.logic;import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.io.InputStream;import java.io.InputStreamReader;import java.io.StringReader;import java.util.ArrayList;import java.util.List;import org.apache.commons.digester.Digester;import org.mcp.data.entity.Bill;import org.mcp.data.entity.BillItem;import org.mcp.util.DateConverterPlugin;import org.mcp.util.DateHelper;import org.mcp.util.EmptyStringUtil;public class BillDigest {private Bill bill;private List<Bill> billList;public Bill getBill() {if(bill ==null)bill = new Bill();return bill;}private void initBill(){if(bill==null){bill = new Bill();}}public List<Bill> getBillList(){return billList;}private void initBillList(){if(billList ==null){billList = new ArrayList<Bill>();}}public void addBillList(String serialNo, String incoming,String termNo, String saleId, String saleName, String buyId, String buyName,String buyCardNo,String totalWeight, String totalMoney, String saleDate, String status,String userId,String meatTypeID) {initBillList();bill = this.getBill();bill.setSerialNo(EmptyStringUtil.stringToEmpty(serialNo));bill.setIncoming(EmptyStringUtil.stringToEmpty(incoming));bill.setTermNo(EmptyStringUtil.stringToEmpty(termNo));bill.getSupplier().setOrgNo(EmptyStringUtil.stringToEmpty(saleId));//bill.getSaleName().setOrgName(EmptyStringUtil.stringToEmpty(saleName));bill.getBuyer().setOrgNo(EmptyStringUtil.stringToEmpty(buyId));//bill.getBuyName().setOrgName(EmptyStringUtil.stringToEmpty(buyName));bill.setBuyCardNo(EmptyStringUtil.stringToEmpty(buyCardNo));bill.setMeatTypeID(EmptyStringUtil.integerToEmpty(meatTypeID));bill.setTotalWeight(EmptyStringUtil.doubleToEmpty(totalWeight));bill.setTotalMoney(EmptyStringUtil.doubleToEmpty(totalMoney));bill.setSaleDate(DateHelper.parseDate(saleDate));bill.setStatus(EmptyStringUtil.integerToEmpty(status));bill.setUserId(EmptyStringUtil.integerToEmpty(userId));//this.setBill(bill);billList.add(bill);bill=null;}public void addBillItem(String variety,String unit,String weight, String price, String total){initBill();BillItem item = new BillItem();item.setVariety(EmptyStringUtil.stringToEmpty(variety));item.setUnit(EmptyStringUtil.stringToEmpty(unit));item.setWeight(EmptyStringUtil.doubleToEmpty(weight));item.setPrice(EmptyStringUtil.doubleToEmpty(price));item.setTotal(EmptyStringUtil.doubleToEmpty(total));item.setHeader(bill);bill.getItems().add(item);}public static List<Bill> getBillList(File xmlFile) {BufferedReader reader = null;List<Bill> billList = null;String s;StringBuffer buffer = new StringBuffer();try {reader = new BufferedReader(new FileReader(xmlFile));while((s = reader.readLine()) != null) {buffer.append(s);}billList = getBillList(buffer.toString());reader.close();} catch (Exception e) {e.printStackTrace();billList = null;}return billList;}public static List<Bill> getBillList(InputStream is) {if (is == null) {return null;}BufferedReader reader = null;List<Bill> billList = null;String s;StringBuffer buffer = new StringBuffer();try {reader = new BufferedReader(new InputStreamReader(is));while ((s = reader.readLine()) != null) {buffer.append(s);}billList = getBillList(buffer.toString());reader.close();} catch (Exception e) {e.printStackTrace();billList = null;}return billList;} public static List<Bill> getBillList(String xml) {String parseXML = xml;List<Bill> billList = null;BillDigest helper;Digester digester = new Digester();digester.setValidating(false);digester.addObjectCreate("document", "org.mcp.data.logic.BillDigest");digester.addCallMethod("document/bill", "addBillList", 14);digester.addCallParam("document/bill/a", 0);digester.addCallParam("document/bill/b", 1);digester.addCallParam("document/bill/c", 2);digester.addCallParam("document/bill/d", 3);digester.addCallParam("document/bill/e", 4);digester.addCallParam("document/bill/f", 5);digester.addCallParam("document/bill/g", 6);digester.addCallParam("document/bill/h", 7);digester.addCallParam("document/bill/i", 8);digester.addCallParam("document/bill/j", 9);digester.addCallParam("document/bill/k", 10);digester.addCallParam("document/bill/l", 11);digester.addCallParam("document/bill/m", 12);digester.addCallParam("document/bill/n", 13);digester.addCallMethod("document/bill/billItem", "addBillItem", 5);digester.addCallParam("document/bill/billItem/ia", 0);digester.addCallParam("document/bill/billItem/ib", 1);digester.addCallParam("document/bill/billItem/ic", 2);digester.addCallParam("document/bill/billItem/id", 3);digester.addCallParam("document/bill/billItem/ie", 4);try {helper = (BillDigest)digester.parse(new StringReader(parseXML));billList = helper.getBillList();}catch (Exception e) {e.printStackTrace();billList = null;}return billList;}public void addBill(Bill bill) {initBillList();bill.setTriger(8);billList.add(bill);}public static List<Bill> getBillListRZ(String xml) {List<Bill> billList = null;BillDigest helper;Digester digester = new Digester();        digester.setValidating(false);//?指明匹配模式和要创建的类 ?                digester.addObjectCreate("sell", BillDigest.class );        digester.addObjectCreate("sell/bill", Bill.class );        digester.addSetProperties("sell/bill", "ss", "billType");//?设置对象属性,与xml文件对应                digester.addBeanPropertySetter("sell/bill/sn", "serialNo");        digester.addBeanPropertySetter("sell/bill/sd", "saleDate");        digester.addBeanPropertySetter("sell/bill/bt", "incoming");        digester.addBeanPropertySetter("sell/bill/oc", "supId");        digester.addBeanPropertySetter("sell/bill/on", "supName");                digester.addBeanPropertySetter("sell/bill/pc", "buyId");        digester.addBeanPropertySetter("sell/bill/pn", "buyName");        digester.addBeanPropertySetter("sell/bill/pd", "buyCardNo");                digester.addBeanPropertySetter("sell/bill/ts", "totalCount");        digester.addBeanPropertySetter("sell/bill/tz", "totalWeight");        digester.addBeanPropertySetter("sell/bill/ta", "totalMoney");                digester.addObjectCreate("sell/bill/item", BillItem.class );        digester.addBeanPropertySetter("sell/bill/item/cn", "variety");        digester.addBeanPropertySetter("sell/bill/item/tw", "weight");        digester.addBeanPropertySetter("sell/bill/item/tp", "price");        digester.addBeanPropertySetter("sell/bill/item/tt", "total");                digester.addBeanPropertySetter("sell/bill/item/bn", "code");//?当移动到下一个标签中时的动作                digester.addSetNext("sell/bill/item", "addItem");        digester.addSetNext("sell/bill", "addBill");        try {helper = (BillDigest)digester.parse(new StringReader(xml));billList = helper.getBillList();}catch (Exception e) {e.printStackTrace();billList = null;}return billList;}}

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（1）方法 getBillList(String xml) 为第一种方式

??? 使用addCallMethod方法,映射XML所对应的节点与这个Call method的参数即可,这个call method将读取的一个标签内所有的值存入对象,然后再存入一个集合中.

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（2）方法 getBillListRZ(String xml) 为第二种方式

??? 使用addObjectCreate方法,创建对象映射XML文件的属性对java Bean. 读取完一个对象将对象加入到一个集合中,然后再读取XML文件的下一个标签

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