Java 如何在使用xpath读取后将xml值写入csv文件
我正在处理一个xml文件,其值必须作为输出写入csv文件中,我能够读取xml文件,但无法使用该值生成csv文件,我给出了xml和java代码,我到目前为止所做的工作Java 如何在使用xpath读取后将xml值写入csv文件,java,xml,csv,xpath,Java,Xml,Csv,Xpath,我正在处理一个xml文件,其值必须作为输出写入csv文件中,我能够读取xml文件,但无法使用该值生成csv文件,我给出了xml和java代码,我到目前为止所做的工作 <?xml version="1.0" ?> <ThirdParty> <Name>Karen Wallace</Name> <Phone>785-296-7829</Phone> <State>KS</State> <A
<?xml version="1.0" ?>
<ThirdParty>
<Name>Karen Wallace</Name>
<Phone>785-296-7829</Phone>
<State>KS</State>
<Address1>420 SW 9th Street</Address1>
<pxObjClass>PCore-Compliance-Commsys-Data-ThirdParty</pxObjClass>
<Zip>66612</Zip>
<City>Topeka</City>
</ThirdParty>
每个标记都将是标题列,其值将位于其下方。CSV代表逗号分隔的值,因此您需要在行中包含逗号分隔符才能写入,这样看起来就像这样(假设您执行了所有资源分解、节点检查等操作):
bw.write(“姓名、电话、州、地址1、pxObjClass、邮编、城市”);
对于(int i=0;i
几个问题:xml中的pyTemporaryObject
在哪里?为什么有重复的代码(见末尾)?您需要关闭BufferedWriter
,所有代码都应该在try..catch
中。请发布正确的输入。我得到..org.apache.xerces.dom.DeferredTextImpl与org.w3c.dom.Element不兼容在哪一行?Element Element Element=(Element)节点此行
public class Main {
public static void main(String[] args) throws XPathExpressionException, SAXException, IOException, ParserConfigurationException {
Writer writer = new OutputStreamWriter(new FileOutputStream("src/main/resources/pathToFile"), "UTF-8");
BufferedWriter bw = new BufferedWriter(writer);
DocumentBuilderFactory domFactory =
DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true);
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.parse("src/main/resources/new.xml");
XPath xpath = XPathFactory.newInstance().newXPath();
// XPath Query for showing all nodes value
XPathExpression expr = xpath.compile("pagedata/ThirdParty/*/text()");
String pyTemporaryObject = null ,line = null;
Object result = expr.evaluate(doc, XPathConstants.NODESET);
NodeList nodes = (NodeList) result;
for (int i = 0; i < nodes.getLength(); i++) {
System.out.println(nodes.item(i).getNodeValue()); // this line prints the output.
// this piece of code I have tried to write into a csv which did not worked
Node node = nodes.item(i);
Element element = (Element) node;
pyTemporaryObject = element.getElementsByTagName("pyTemporaryObject").item(0).getTextContent();
line = String.format("%s", pyTemporaryObject);
System.out.println(pyTemporaryObject);
bw.write(line);
bw.newLine();
bw.flush();Node node = nodes.item(i);
Element element = (Element) node;
pyTemporaryObject = element.getElementsByTagName("pyTemporaryObject").item(0).getTextContent();
line = String.format("%s", pyTemporaryObject);
System.out.println(pyTemporaryObject);
bw.write(line);
bw.newLine();
bw.flush();
}
}
}
Name | Phone | State | Address1 | pxObjClass | Zip | City
Karen Wallace | 785-296-7829 | KS | 420 SW 9th Street | PCore-Compliance-Commsys-Data-ThirdParty | 66612 | Topeka
bw.write("Name,Phone,State,Address1,pxObjClass,Zip,City");
for (int i = 0; i < nodes.getLength(); i++) {
{
Node node = nodes.item(i);
Element element = (Element) node;
String name = element.getElementsByTagName("Name").item(0).getTextContent();
String phone = element.getElementsByTagName("Phone").item(0).getTextContent();
String state = element.getElementsByTagName("State").item(0).getTextContent();
String address1 = element.getElementsByTagName("Address1").item(0).getTextContent();
String pxObjClass = element.getElementsByTagName("pxObjClass").item(0).getTextContent();
String zip = element.getElementsByTagName("Zip").item(0).getTextContent();
String city = element.getElementsByTagName("City").item(0).getTextContent();
line = String.format("%s,%s,%s,%s,%s,%s,%s", name,phone,state,address1,pxObjClass,zip,city);
bw.write(line);
bw.newLine();
bw.flush();
}