我对编码很陌生，任何人都可以帮助我更正我的代码。我需要读取 XML 数据并将数据存储在文本文件中。每个值必须用逗号分隔，一旦读取一条记录的数据，它需要转到下一行并执行另一条记录。
示例 XML 文件：
<?xml version="1.0" encoding="UTF-8"?>
<xml_tool xmlns:md="http://www.example.com/XT/1.0/">
<md:header>
<md:application_version>1.0</md:application_version>
<md:export_date>19-04-2012</md:export_date>
<md:export_time>14:55</md:export_time>
<md:export_user>USER01</md:export_user>
</md:header>
<md:table table_name="CUSTOMER" key="customer number" record_count="2" column_count="5">
<md:record>
<md:column name="customer_number">123456</md:column>
<md:column name="reg_date">01-04-2012</md:column>
<md:column name="customer_name">Test Customer</md:column>
<md:column name="customer_type">Normal </md:column>
<md:column name="comments">This is a test record</md:column>
</md:record>
<md:record>
<md:column name="customer_number">555111</md:column>
<md:column name="reg_date">02-04-2012</md:column>
<md:column name="customer_name">Test Customer</md:column>
<md:column name="customer_type"> </md:column>
<md:column name="comments">This is a test record</md:column>
</md:record>
</md:table>
</xml_tool
我的代码：
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import java.io.*;
public class ParseXML {
public static void main(String argv[])throws IOException {
try {
BufferedWriter writer = new BufferedWriter(new FileWriter("results/staff.txt"));
File fXmlFile = new File("data/hardware-info.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
doc.getDocumentElement().normalize();
NodeList nList = doc.getElementsByTagName("md:record");
for (int i = 0; i < nList.getLength(); i++)
{
Node node = nList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE)
{
Element eElement = (Element) node;
if(eElement.hasChildNodes())
{
NodeList nl = node.getChildNodes();
for(int j=0; j<nl.getLength(); j++)
{
Node nd = nl.item(j);
String name= nd.getTextContent();
f (name != null && !name.trim().equals("")) {
System.out.print(name.trim()+",");
//System.out.print(" ");
writer.write(nd.getTextContent().trim() + " ");
}
}
System.out.println("");
writer.write("\n");
}
} }
writer.close();
}
catch (Exception e) {
e.printStackTrace(); } }
@SuppressWarnings("unused")
private static String getTagValue(String sTag, Element eElement)
{
NodeList nlList = eElement.getElementsByTagName(sTag).item(0).getChildNodes();
Node nValue = (Node) nlList.item(0);
return nValue.getNodeValue();
}
}
此代码的输出：
123456,01-04-2012,Test Customer,Normal,,This is a test record,
555111,02-04-2012,Test Customer,This is a test record,
预期输出：
123456,01-04-2012,Test Customer,Normal,This is a test record
555111,02-04-2012,Test Customer, ,This is a test record