读取具有属性 java

如何解决读取具有属性 java

我必须阅读 100 个 XML，我需要用 java 阅读。 此代码仅读取一个 XML，但如何读取整个 XML 文件夹？我使用 XPath 是因为所有的 XML 都有属性。文件夹中的所有 XML 都是帐单，我需要获取每一项的具体信息：

public class Interpretarxml {

    public static void main(String[]args){
        try{
            DocumentBuilderFactory db= DocumentBuilderFactory.newInstance();
            //Agilizar la lectura de arhivos grandes
            db.setNamespaceAware(false);
            db.setValidating(false);
            db.setFeature("http://xml.org/sax/features/namespaces",false);
            db.setFeature("http://xml.org/sax/features/validation",false);
            db.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar",false);
            db.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd",false);
            //Constructor de Objetos
            DocumentBuilder a= db.newDocumentBuilder();
            //Ruta del Archivo
            String archivo="C:\\Users\\carme\\OneDrive\\Escritorio\\Documentos\\NetBeansprojects\\Practicarxml\\src\\main\\java\\LeerXml\\1b254147-26f4-4ca9-8f85-3d5da753dc99.xml";
            File f=new File(archivo);    
            //Objeto Documento XML
            Document doc= a.parse(f);
            doc.getDocumentElement().normalize();
    
            XPath x = XPathFactory.newInstance().newXPath();
            String Tras="/Comprobante";
    
            NodeList n = (NodeList)x.compile(Tras).evaluate(doc,XPathConstants.NODESET);
            System.out.println("Cantidad de elementos que empatan con la ruta " + n.getLength());
            Element e = (Element)n.item(0);
            System.out.println("Tipo\t\t: " + e.getAttribute("TipodeComprobante"));
            System.out.println("Total\t\t: " + e.getAttribute("Total"));
            System.out.println("Subtotal\t\t: " + e.getAttribute("SubTotal"));
            System.out.println("Metodo de Pago: " + e.getAttribute("MetodoPago"));
           
            String Em = "/Comprobante/Emisor";
            NodeList nodeh=(NodeList)x.compile(Em).evaluate(doc,XPathConstants.NODESET);
            for (int i = 0; i < nodeh.getLength(); i++) {
                Node u=nodeh.item(i);
                if(u.getNodeType()==Node.ELEMENT_NODE){
                    Element d=(Element)u;
                    System.out.println("Nombre\t\t:" + d.getAttribute("Nombre"));
                    System.out.println("RFC\t\t:" + d.getAttribute("Rfc"));
                }
            }
            String Con="/Comprobante/Conceptos/Concepto";
            NodeList nodeC = (NodeList)x.compile(Con).evaluate(doc,XPathConstants.NODESET);
            System.out.println("Cantidad de Conceptos de la Factura");
            System.out.println(nodeC.getLength());
            System.out.println( "" );
           
            for (int i = 0; i < nodeC.getLength(); i++) {
                Node nodo= nodeC.item(i);
                if(nodo.getNodeType()==Node.ELEMENT_NODE){
                    Element s= (Element)nodo;
                    System.out.println("ClaveProdServ\t\t: " + s.getAttribute("ClaveProdServ"));
                    System.out.println("ClaveUnidad\t\t: " + s.getAttribute("ClaveUnidad"));
                    System.out.println("Descripciont\t\t: " + s.getAttribute("Descripcion"));
                    System.out.println("ValorUnitario\t\t: " + s.getAttribute("ValorUnitario"));
                    System.out.println("NoIdentificacion\t: " + s.getAttribute("NoIdentificacion"));
                    System.out.println("\n");
                }
            }  
        }
        catch(IOException | ParserConfigurationException | 
                            XPathExpressionException | SAXException e) {
            Logger.getLogger(Interpretarxml.class.getName()).log(Level.SEVERE,null,e);  
        }
    
    }
}

解决方法

function GetCity($country) {
    $x = "not available"                
    If ( $country -eq "Brazil" ) { $x = "Rio de Janeiro" }
    If ( $country -eq "Mexico" ) { $x = "Mexico City" }
    If ( $country -eq "Argentina" ) { $x = "Buenos Aires" }    
    return $x    
}

# Source the JSON content
$jsonFile = 'C:\Temp\test.json'
$jsonContent  = Get-Content -Path $jsonFile

# Convert JSON to PSObjects
$jsonAsPsObjects = $jsonContent | ConvertFrom-Json

foreach ($info in $jsonAsPsObjects) {
    $result = GetCity($info.description.country)
    jsonContent | Add-Member -Type NoteProperty -Name "City" -Value $result
}

# Save JSON back to file
$json | ConvertTo-Json | Set-Content $jsonFile

将调用 Path directory = Paths.get("/path/to/xml/folder/"); PathMatcher pathMatcher = FileSystems.getDefault().getPathMatcher("glob:**.{xml,XML}"); Files.find(directory,1,(p,u) -> pathMatcher.matches(p)) .map(Path::toFile) .forEach(System.out::println); 替换为调用您现有的 XML 解析代码。如果您不需要支持大写的 XML 文件扩展名，只需使用 System.out.println() 作为 "glob:**.xml" 的参数。