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[英]Can we read xml file and update tag value using OCP command. I have update to tomcat context.xml from rundeck job
[英]Read from folder and update the XML tag value
我有一個文件夾(“容器”),我有一些實際上包含XML的.txt文件。 所有文件都有一個公共元素<Number>
,我想為所有XML文件遞增1。 任何幫助。
我已經完成了單個.txt文件的更改,這沒關系: -
package ParsingXML;
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;
public class ReadAndModifyXMLFile {
public static final String xmlFilePath = "C:\\Users\\PSINGH17\\Desktop\\testFile.txt";
public static void main(String argv[]) {
try {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.parse(xmlFilePath);
// Get employee by tag name
//use item(0) to get the first node with tag name "employee"
Node employee = document.getElementsByTagName("employee").item(0);
// update employee , increment the number
NamedNodeMap attribute = employee.getAttributes();
Node nodeAttr = attribute.getNamedItem("number");
String str= nodeAttr.getNodeValue();
System.out.println(str);
int val= Integer.parseInt(str);
System.out.println(val);
val=val+1;
System.out.println(val);
String final_value= String.valueOf(val);
System.out.println(final_value);
nodeAttr.setTextContent(final_value);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource domSource = new DOMSource(document);
StreamResult streamResult = new StreamResult(new File(xmlFilePath));
transformer.transform(domSource, streamResult);
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (SAXException sae) {
sae.printStackTrace();
}
}
}
xml文件: -
<?xml version="1.0" encoding="UTF-8" standalone="no"?><company>
<employee number="14">
<firstname>Pranav</firstname>
<lastname>Singh</lastname>
<email>pranav@example.org</email>
<salary>1000</salary>
</employee>
</company>
因此,此代碼使用哈希后的初始值數字來啟動計數器。 然后它遍歷文件夾中的所有文件。 第一個文件將獲得初始值,其余文件將獲得遞增值。
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
public class TestFile {
public static final String xmlFileFolder = "C:\\Rahul\\test";
private static final String initialValue = "450-000-1212";
public static void main(String argv[]) {
int baseValue = Integer.parseInt(getValueAfterLastDash(initialValue));
System.out.println("startValue " + baseValue);
File folder = new File(xmlFileFolder);
for (File file : folder.listFiles()) {
try {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.parse(file);
Node employee = document.getElementsByTagName("employee").item(0);
NamedNodeMap attribute = employee.getAttributes();
Node nodeAttr = attribute.getNamedItem("number");
System.out.println(getValueBeforeLastDash(initialValue) + baseValue);
nodeAttr.setTextContent(getValueBeforeLastDash(initialValue) + baseValue);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource domSource = new DOMSource(document);
StreamResult streamResult = new StreamResult(file);
transformer.transform(domSource, streamResult);
baseValue++;
} catch (Exception ignored) {
}
}
}
private static String getValueAfterLastDash(String initialValue) {
return initialValue.substring(initialValue.lastIndexOf('-') + 1, initialValue.length());
}
private static String getValueBeforeLastDash(String initialValue) {
return initialValue.substring(0, initialValue.lastIndexOf('-') + 1);
}
}
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