I've been reading over this SAXParseException error for a while and trying to resolve it but to no success.
[Fatal Error] schedule.xml:1:1: Premature end of file.
org.xml.sax.SAXParseException; systemId: file:/U:/schedule.xml; lineNumber: 1; columnNumber: 1; Premature end of file.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at javax.xml.parsers.DocumentBuilder.parse(Unknown Source)
at package.DOMclass.importDocument(DOMclass.java:681) //<---.parse(new File(fileToImport));
...
I've read how it could be the stream being used is empty (or xml file being read is empty), as well as it can't be reused? Also, the problem of reading and writing back to the same file. Here's a link that explains it but I still don't understand.
Also, another possibility could be that my xml is malformed/not correct but I've looked over it and it's fine, the tags are good and I've encoded it in UTF-8 (without BOM) in Notepad++ since some posts have said there might be hidden whitespace before the xml declaration but again, no success.
This is my reading in code
public TestClass(){
Node root = DOMclass.importDocument("U:\\schedule.xml");
... read nodes, attribute values, etc..
}
public static Document importDocument(String fileToImport)
{
Document document = null;
try
{
document = DocumentBuilderFactory.newInstance().newDocumentBuilder()
.parse(new File(fileToImport)); //<--- where the error is at
//Do I need a Reader here? to close?
}
catch(SAXException saxe)
{
saxe.printStackTrace();
}
catch(IOException ioe)
{
ioe.printStackTrace();
}
catch(ParserConfigurationException pce)
{
pce.printStackTrace();
}
return document;
}
This is my writing out.
public static void addNode(String name, String lastName,...){
String filepath = "U;\\schedule.xml";
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder;
try {
docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse(filepath);
...
... make/traverse xml nodes, elements, appending
...
}
DOMUtils.exportDocument(doc, filepath);
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void exportDocument(Document documentToExport, String fileName)
{
Transformer transformer = null;
DOMSource domSource = null;
StreamResult streamResult = null;
try
{
BufferedWriter out = new BufferedWriter(new FileWriter(fileName));
transformer = TransformerFactory.newInstance().newTransformer();
domSource = new DOMSource(documentToExport);
streamResult = new StreamResult(out);
System.out.println("\nStream Result: " + streamResult);
transformer.transform(domSource, streamResult);
out.close();
}
catch (IOException e)
{
e.printStackTrace();
}
catch(TransformerException e)
{
e.printStackTrace();
}
finally
{
transformer = null;
domSource = null;
streamResult = null;
}
}
}
Any thoughts? Thank you.
Related
Is there any way to prevent Java from escaping the special characters when writing to XML using DOM? I can’t change the format of the XML so I can’t save them in CDATA tags.
I’m trying to save HTML inside a XML file using DOM. Currently it is escaping the special characters so <p> is being saved as <p>.
public void updateXML(Document doc) throws XPathExpressionException{
Node aNode = getXMLNode("//PRECISSCHE.HTM/html/body", doc);
removeChilds(aNode);
aNode.setTextContent(saved_precis_Scheme);
}
It's outputting as:
<PRECISSCHE.HTM>
<html>
<body><p>schemeName</p></body>
</html>
</PRECISSCHE>
but I need:
<PRECISSCHE.HTM>
<html>
<body><p>schemeName</p></body>
</html>
</PRECISSCHE>
Here is my code to create the doc object:
//pull data and write to XML
public void updateXML(String path) throws XPathExpressionException{
try {
String filepath = path;
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
docFactory.setIgnoringElementContentWhitespace(true);
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse(filepath);
Tab_Client.updateClientXML(doc);
if(!polType.equals("Household")){
Tab_Vehicle.updateVehicleXML(doc);
Tab_PCClaimsConv.updateXML(doc);
Tab_precis.updateXML(doc);
}
if(polType.equals("Household")){
Tab_PropertyDetails.updatePropertyDetailsXML(doc);
Tab_HCsumInsured.updateXML(doc);
Tab_Contents.updateXML(doc);
Tab_HCClaims.updateXML(doc);
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new File(filepath));
transformer.transform(source, result);
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (SAXException sae) {
sae.printStackTrace();
}
}
You can that do
stringString.replaceAll("<","<").replaceAll(">",">")
before you output the data
I have been recently trying to read from a xml file. I believe I am parsing correctly but it returns null,however not always.I received the input that I want 1 out of 100 executions, with no drastic changes on code.This is the code that receives the file path of xml file(also file in code)
public Document getXmlDoc(String filePath) {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
Document doc = null;
try {
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
doc = dBuilder.parse(new File(filePath));
doc.getDocumentElement().normalize();
System.out.println(doc.getDocumentElement().getNodeValue());//null
System.out.println(doc.getDocumentElement().getChildNodes().item(1));//null
System.out.println(doc.getDocumentElement().getLastChild().getAttributes().getNamedItem("id"));//not null and correct
System.out.println(doc.getDocumentElement().getElementsByTagName("entry").item(1));//null
} catch (ParserConfigurationException e) {
e.printStackTrace();//pipe these
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return doc;
}
Also I call my method here and turn my node to string
NodeList nList = getXmlDoc(newFilePath).getElementsByTagName("entry");
System.out.println(nodeToString(nList.item(i)));
Where nList is a node list and nodeToString method is like this:
private String nodeToString(Node node){
StringWriter sw = new StringWriter();
try{
Transformer t = TransformerFactory.newInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION,"yes");
t.transform(new DOMSource(node),new StreamResult(sw));
} catch (TransformerException e) {
e.printStackTrace();
}
return sw.toString();
}
I've embedded fop in a java programm:
public class run {
public static void main(String [ ] args){
FopFactory fopFactory = FopFactory.newInstance();
OutputStream out = null;
try {
out = new BufferedOutputStream(new FileOutputStream(new File("F:/test.pdf")));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, out);
TransformerFactory factory = TransformerFactory.newInstance();
Source xslt = new StreamSource(new File("F:/main_structure.xsl"));
Transformer transformer = factory.newTransformer(xslt);
Source src = new StreamSource(new File("F:/source.xml"));
Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
} catch (FOPException e) {
e.printStackTrace();
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
} finally {
try {
out.close();
System.out.println("ende");
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
now my xsl (main_structure.xsl) needs a parameter to run
<xsl:param name="OFFSET_LEFT" select="1"/>
in the console I would be using the "-param name value" attribute to pass that parameter to fop.
So how do I pass a parameter into my xsl file in the embedded version of fop?
For example read: http://www.onlamp.com/pub/a/onjava/excerpt/java_xslt_ch5/index.html?page=4
Transformer transformer = factory.newTransformer(xslt);
transformer.setParameter("PARAMETER", "VALUE");
Here I try to access two third party API.
I got two xml response, I merge them in one single file and store it in local system.
If i print the output in console I got the output in xml format, but I want to print it in the browser.
My solution won't work please help me.
Here's my code:
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/xml");
PrintWriter out=response.getWriter();
String btn1=request.getParameter("btn1");
String btn2=request.getParameter("btn2");
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setIgnoringComments(true);
DocumentBuilder builder = null;
try {
builder = domFactory.newDocumentBuilder();
} catch (ParserConfigurationException e2) {
e2.printStackTrace();
}
Document doc = null;
try {
doc = builder.parse(new URL("valid url in my program").openStream());
response.setContentType("text/xml");
Object con=doc.getDoctype();
} catch (SAXException e2) {
e2.printStackTrace();
}
Document doc1 = null;
try {
doc1 = builder.parse(new URL(valid url).openStream());
} catch (SAXException e2) {
e2.printStackTrace();
}
NodeList nodes = doc.getElementsByTagName("events");
NodeList node1=doc.getElementsByTagName("events");
Element root=doc.getDocumentElement();
Element root1 = doc.createElement("ObjectId");
doc.getDocumentElement().appendChild(root1);
root.getElementsByTagName("ObjectId").item(0).setTextContent("1");
node1.item(0).getParentNode().insertBefore(root1,node1.item(0));
NodeList nodes1 = doc1.getElementsByTagName("events");
NodeList node2=doc1.getElementsByTagName("event");
Element root2=doc1.getDocumentElement();
Element root3= doc1.createElement("ObjectId");
doc1.getDocumentElement().appendChild(root3);
root2.getElementsByTagName("ObjectId").item(0).setTextContent("2");
node2.item(0).getParentNode().insertBefore(root3,node2.item(0));
for(int i=0;i<nodes1.getLength();i=i+1){
Node n= (Node) doc.importNode(nodes1.item(i), true);
nodes.item(i).getParentNode().appendChild(n);
}
Transformer transformer = null;
try {
transformer = TransformerFactory.newInstance().newTransformer();
} catch (TransformerConfigurationException e1) {
e1.printStackTrace();
} catch (TransformerFactoryConfigurationError e1) {
e1.printStackTrace();
}
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
StreamResult result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
try {
transformer.transform(source,result);
} catch (TransformerException e) {
e.printStackTrace();
}
Writer output = null;
output = new BufferedWriter(new FileWriter("merge.xml"));
String xmlout = result.getWriter().toString();
output.write(xmlout);
response.setContentType("text/xml");
out.write(xmlout);
//out.println(xmlout);
//System.out.println(xmlout);
//I tried many ways but
//it will not print to the browser in xml the format
}
A point of note; you're setting the ContentType three times. It only needs setting once?
You don't appear to be returning the response, but I presume some other part of your program is handling that.
EDITED: the other answer that was here disappeared.
Going to need more information to work out what is going wrong. Please bear in mind that System.out.println() calls will not show up in the browser as they're console-specific.
I am trying to get the DOM element from a UTF-8 Encoded XML parsed file containing arabic characters.
The below method take the parsed xml string and is supposed to return the Document.
here is a link to the xml:
http://212.12.165.44:7201/UniNews121.xml
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
StringReader xmlstring=new StringReader(xml);
is.setCharacterStream(xmlstring);
is.setEncoding("UTF-8");
//APP CRASHES HERE
doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
// return DOM
return doc;
}
Error:
09-18 13:36:20.031: E/Error:(3846): Unexpected token (position:TEXT xml version="1.0...#2:1 in java.io.InputStreamReader#4144ac08)
I would appreciate your help but please be specific in your answers
It happened a lot of times to me, you should double check the encoding of the file you are opening. I suggest you to test this with a local copy of the file where you set the encoding by hand.