java.net.MalformedURLException - at parsing XML file by StAX
java, runtimeexception, stax, xml, xml-parsing
Solution
Your issue is seemingly with `ClassLoader#getSystemResourceAsStream()`. This method would look for the resources within the classpath and if not found you would get your `XMLStreamReader` complaining about MalformedURL.
Options:
Use `FileInputStream` and provide your path to your file.
`reader = factory.createXMLStreamReader(new FileInputStream(PATH_TO_XML));`
Add your xml to your eclipse `classpath` by - `Run As` -> `Run Configurations` -> `Classpath` -> Click `User Entries` and Click `Advanced` -> `Add External Folder` (go to the folder containing your xml)
Problem
I have to parse XML file with StAX. I caught bunch of exceptions: ``` javax.xml.stream.XMLStreamException: java.net.MalformedURLException at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.setInputSource(XMLStreamReaderImpl.java:217) at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.<init>(XMLStreamReaderImpl.java:189) at com.sun.xml.internal.stream.XMLInputFactoryImpl.getXMLStreamReaderImpl(XMLInputFactoryImpl.java:262) at com.sun.xml.internal.stream.XMLInputFactoryImpl.createXMLStreamReader(XMLInputFactoryImpl.java:129) at com.epam.lab.StaxXmlParser.<init>(StAXParserDemo.java:46) at com.epam.lab.StAXParserDemo.main(StAXParserDemo.java:20) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120) Caused by: java.net.MalformedURLException at java.net.URL.<init>(URL.java:619) at java.net.URL.<init>(URL.java:482) at java.net.URL.<init>(URL.java:431) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:610) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:1290) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDocumentEntity(XMLEntityManager.java:1242) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.setInputSource(XMLDocumentScannerImpl.java:257) at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.setInputSource(XMLStreamReaderImpl.java:204) ``` here is how xml file loooks: ``` <?xml version="1.0" encoding="UTF-8"?> <staff xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="newEmployee.xsd"> <employee> <name>Carl Cracker</name> <salary>75000</salary> <hiredate year="1987" month="12" day="15" /> </employee> <employee> <name>Harry Hacker</name> <salary>50000</salary> <hiredate year="1989" month="10" day="1" /> </employee> <employee> <name>Tony Tester</name> <salary>40000</salary> <hiredate year="1990" month="3" day="15" /> </employee> </staff> ``` Here is code snippet: ``` public class StAXParserDemo { public static void main(String[] args) { try { StaxXmlParser staxXmlParser = new StaxXmlParser(EMPLOYEE_XML.getFilename()); List<Employee> employees = staxXmlParser.parseEmployee(); for (Employee emp : employees) { System.out.println(emp); } } catch (Throwable e) { e.printStackTrace(); } } } class StaxXmlParser { private List<Employee> employeeList; private Employee currentEmployee; private String tagContent; private XMLStreamReader reader; public StaxXmlParser(String filename) { employeeList = null; currentEmployee = null; tagContent = null; try { XMLInputFactory factory = XMLInputFactory.newFactory(); reader = factory.createXMLStreamReader(ClassLoader.getSystemResourceAsStream(filename)); parseEmployee(); } catch (XMLStreamException e) { e.printStackTrace(); } } public List<Employee> parseEmployee() throws XMLStreamException { while (reader.hasNext()) { int event = reader.next(); switch (event) { case XMLStreamConstants.START_ELEMENT: if ("employee".equals(reader.getLocalName())) { currentEmployee = new Employee(); } if ("staff".equals(reader.getLocalName())) { employeeList = new ArrayList<>(); } if ("hireday".equals(reader.getLocalName())) { int yearAttr = Integer.parseInt(reader.getAttributeValue(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI, "year")); int monthAttr = Integer.parseInt(reader.getAttributeValue(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI, "month")); int dayAttr = Integer.parseInt(reader.getAttributeValue(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI, "day")); currentEmployee.setHireDay(yearAttr, monthAttr, dayAttr); } break; case XMLStreamConstants.CHARACTERS: tagContent = reader.getText().trim(); break; case XMLStreamConstants.END_ELEMENT: switch (reader.getLocalName()) { case "employee": employeeList.add(currentEmployee); break; case "name": currentEmployee.setName(tagContent); break; case "salary": currentEmployee.setSalary(Double.parseDouble(tagContent)); break; } } } return employeeList; } } ``` UPDATE: Follow suggestions I changed to next: reader = factory.createXMLStreamReader(new FileInputStream(new File(filename))); And now it printed next output: ``` Employee { name=Carl Cracker, salary=75000.0, hireDay=null } Employee { name=Harry Hacker, salary=50000.0, hireDay=null } Employee { name=Tony Tester, salary=40000.0, hireDay=null } ``` What is wrong with attributes extracting? I changed question closer to new issue. Why does this happen? Any suggestions?