I have this XML result from a web service request. The tags that are inside the box are the ones that I need from the xml result.
Here's what I have so far:
private Node getMessageNode(QueryResponseQueryResult paramQueryResponseQueryResult, String[] paramArrayOfString)
{
MessageElement[] arrayOfMessageElement = paramQueryResponseQueryResult.get_any();
Document localDocument = null;
String res;
try
{
localDocument = arrayOfMessageElement[0].getAsDocument(); //result from the webservice
}
catch (Exception localException) {}
if (localDocument == null) {
return null;
}
Object localObject = localDocument.getDocumentElement();
localObject = Nodes.findChildByTags((Node)localObject, paramArrayOfString);
return localDocument; //This returns the XML above
}
How do I parse the result to return only those tags on the box and still return it as XML type?
Thanks in advance.
You can use Xpath of XQuery to perform this task.
You should get the document, and then you can get the child node of table using
getElementByTagName("table") or run XPath on it:
See here a good xpath tutorial.
Related
at the moment I am trying to program a program which is able to render a link of an xml-file. I use Jsoup, my current code is the following
public static String XmlReader() {
InputStream is = RestService.getInstance().getWsilFile();
try {
Document doc = Jsoup.parse(fis, null, "", Parser.xmlParser());
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
I would like to read the following part from a XML file:
<wsil:service>
<wsil:abstract>Read the full documentation on: https://host/sap/bc/mdrs/cdo?type=psm_isi_r&objname=II_QUERY_PROJECT_IN&saml2=disabled</wsil:abstract>
<wsil:name>Query Projects</wsil:name>
<wsil:description location="host/sap/bc/srt/wsdl/srvc_00163E5E1FED1EE897C188AB4A5723EF/wsdl11/allinone/ws_policy/document?sap-vhost=host&saml2=disabled" referencedNamespace="http://schemas.xmlsoap.org/wsdl/"/>
</wsil:service>
I want to return the following URL as String
host/sap/bc/srt/wsdl/srvc_00163E5E1FED1EE897C188AB4A5723EF/wsdl11/allinone/ws_policy/document?sap-vhost=host&saml2=disabled
How can I do that ?
Thank you
If there is only one tag wsil:description then you can use this code:
doc.outputSettings().escapeMode(EscapeMode.xhtml);
String val = doc.select("wsil|description").attr("location");
Escape mode should be changed, since you are not working on regular html, but xml.
If you have more than one tag with given name you can search for distinct neighbour element, and find required tag with respect to it:
String val = doc.select("wsil|name:contains(Query Projects)").first().parent().select("wsil|description").attr("location");
i want to know if is possible to me to parse some atributes from a xml file, to be a object in java
I don´t wanna to create all fields that are in xml.
So, how can i do this?
For exemple below there is a xml file, and i want only the data inside the tag .
<emit>
<CNPJ>1109</CNPJ>
<xNome>OESTE</xNome>
<xFant>ABATEDOURO</xFant>
<enderEmit>
<xLgr>RODOVIA</xLgr>
<nro>S/N</nro>
<xCpl>402</xCpl>
<xBairro>GOMES</xBairro>
<cMun>314</cMun>
<xMun>MINAS</xMun>
<UF>MG</UF>
<CEP>35661470</CEP>
<cPais>58</cPais>
<xPais>Brasil</xPais>
<fone>03</fone>
</enderEmit>
<IE>20659</IE>
<CRT>3</CRT>
For Java XML parsing where you don't have the XSD and don't want to create a complete object graph to represent the XML, JDOM is a great tool. It allows you to easily walk the XML tree and pick the elements you are interested in.
Here's some sample code that uses JDOM to pick arbitrary values from the XML doc:
// reading can be done using any of the two 'DOM' or 'SAX' parser
// we have used saxBuilder object here
// please note that this saxBuilder is not internal sax from jdk
SAXBuilder saxBuilder = new SAXBuilder();
// obtain file object
File file = new File("/tmp/emit.xml");
try {
// converted file to document object
Document document = saxBuilder.build(file);
//You don't need this or the ns parameters in getChild()
//if your XML document has no namespace
Namespace ns = Namespace.getNamespace("http://www.example.com/namespace");
// get root node from xml. emit in your sample doc?
Element rootNode = document.getRootElement();
//getChild() assumes one and only one, enderEmit element. Use a lib and error
//checking as needed for your document
Element enderEmitElement = rootNode.getChild("enderEmit", ns);
//now we get two of the child from
Element xCplElement = enderEmitElement.getChild("xCpl", ns);
//should be 402 in your example
String xCplValue = xCplElement.getText();
System.out.println("xCpl: " + xCplValue);
Element cMunElement = enderEmitElement.getChild("cMun", ns);
//should be 314 in your example
String cMunValue = cMunElement.getText();
System.out.println("cMun: " + cMunValue);
} catch (JDOMException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
You can use JAXB to unmarshal the xml into Java object, with which you can read selective elements easily. With JAXB, the given XML can be represented in Java as follows :
enderEmit element :
#XmlRootElement
public class EnderEmit{
private String xLgr;
//Other elements.Here you can define properties for only those elements that you want to load
}
emit element (This represents your XML file):
#XmlRootElement
public class Emit{
private String cnpj;
private String xnom;
private EnderEmit enderEmit;
..
//Add elements that you want to load
}
Now by using the below lines of code, you can read your xml to an object :
String filePath="filePath";
File file = new File(filePath);
JAXBContext jaxbContext = JAXBContext.newInstance(Emit.class);
jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Emit emit = (Emit) jaxbUnmarshaller.unmarshal(file);
The line will give you an emit object for the given xml.
Try to use StringUtils.subStringBetween
try
{
String input = "";
br = new BufferedReader(new FileReader(FILEPATH));
String result = null;
while ((input = br.readLine()) != null) // here we read the file line by line
{
result = StringUtils.substringBetween(input, ">", "<"); // using StringUtils.subStringBetween to get the data what you want
if(result != null) // if the result should not be null because some of the line not having the tags
{
System.out.println(""+result);
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
finally
{
try
{
if (br != null)
{
br.close();
}
}
catch (IOException ex)
{
ex.printStackTrace();
}
}
I am trying to make some XPaths queries in a XML document using the Saxon 9.5 HE Java Library. I created the query with the net.sf.saxon.xpath.XPathEvaluator, and wanted to get all book titles out of a XML document. Unfortunately I only get the first title. Here is my sample code:
public static void main(String[] args)
{
try
{
InputSource is = new InputSource(new File("books.xml").toURI().toURL().toString());
String x = new XPathEvaluator().evaluate("//book/title", is);
System.out.println(x);
}
catch(Exception e)
{
e.printStackTrace();
}
}
Thanks and kind regards :)
I just implemented a solution with the XPathCompiler:
This works fine. If you are interested you can have a look at the source code:
public static void main(String[] args)
{
try
{
Processor proc = new Processor(false);
DocumentBuilder builder = proc.newDocumentBuilder();
XPathCompiler xpc = proc.newXPathCompiler();
XPathSelector selector = xpc.compile("//book/title").load();
selector.setContextItem(builder.build(new File("books.xml")));
for (XdmItem item: selector)
{
System.out.println(item.getStringValue());
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
Which XPathEvaluator is that, the JAXP one? I think that implements XPath 1.0 semantics where the string result of evaluating an XPath expression returning a set of nodes returns the string value of the first selected node. You would either need to evaluate to node set or you could use the XPath "string-join(//book/title, ', ')".
If you want to have a sequence of string values you could use http://www.saxonica.com/html/documentation/javadoc/net/sf/saxon/sxpath/XPathEvaluator.html although that documentation suggests the preferred way is to use s9api with http://www.saxonica.com/html/documentation/javadoc/net/sf/saxon/s9api/XPathCompiler.html.
I'm using HTML Parser to fetch links from a web page. I need to store the URL, link text and the URL to the parent page containing the link. I have managed to get the link URL as well as the parent URL.
I still ned to get the link text.
link text
Unfortunately I'm having a hard time figuring it out, any help would be greatly appreciated.
public static List<LinkContainer> findUrls(String resource) {
String[] tagNames = {"A", "AREA"};
List<LinkContainer> urls = new ArrayList<LinkContainer>();
Tag tag;
String url;
String sourceUrl;
try {
for (String tagName : tagNames) {
Parser parser = new Parser(resource);
NodeList nodes = parser.parse(new TagNameFilter(tagName));
NodeIterator i = nodes.elements();
while (i.hasMoreNodes()) {
tag = (Tag) i.nextNode();
url = tag.getAttribute("href");
sourceUrl = tag.getPage().getUrl();
if (RegexUtil.verifyUrl(url)) {
urls.add(new LinkContainer(url, null, sourceUrl));
}
}
}
} catch (ParserException pe) {
pe.printStackTrace();
}
return urls;
}
Have you tried ((LinkTag) tag).getLinkText() ? Personally I prefer n html parser which produces XML according to a well used standard, e.g., xerces or similar. This is what you get from using e.g., http://nekohtml.sourceforge.net/.
You would need to check the children of each A Tag. If you assume that your A tags only have a single child (the text itself), you can use the getFirstChild() method. This should be an instance of TextNode, and you can call getText() on this to get the link text.
Again a question. This time I'm parsing XML messages I receive from a server.
Someone thought to be smart and decided to place HTML pages in a XML message. Now I'm kind of facing problems because I want to extract that HTML page as a string from this XML message.
Ok this is the XML message I'm parsing:
<AmigoRequest>
<From></From>
<To></To>
<MessageType>showMessage</MessageType>
<Param0>general message</Param0>
<Param1><html><head>test</head><body>Testhtml</body></html></Param1>
</AmigoRequest>
You see that in Param1 a HTML page is specified. I've tried to extract the message the following way:
public String getParam1(Document d) {
if (d.getDocumentElement().getTagName().equals("AmigoRequest")) {
NodeList results = d.getElementsByTagName("Param1");
// Messagetype depends on what message we are reading.
if (results.getLength() > 0 && results != null) {
return results.item(0).getFirstChild().getNodeValue();
}
}
return "";
}
Where d is the XML message in document form.
It always returns me a null value, because getNodeValue() returns null.
When i try results.item(0).getFirstChild().hasChildNodes() it will return true because he sees there is a tag in the message.
How can i extract the html message <html><head>test</head><body>Testhtml</body></html> from Param0 in a string?
I'm using Android sdk 1.5 (well almost java) and a DOM Parser.
Thanks for your time and replies.
Antek
You could take the content of param1, like this:
public String getParam1(Document d) {
if (d.getDocumentElement().getTagName().equals("AmigoRequest")) {
NodeList results = d.getElementsByTagName("Param1");
// Messagetype depends on what message we are reading.
if (results.getLength() > 0 && results != null) {
// String extractHTMLTags(String s) is a function that you have
// to implement in a way that will extract all the HTML tags inside a string.
return extractHTMLTags(results.item(0).getTextContent());
}
}
return "";
}
All you have to do is to implement a function:
String extractHTMLTags(String s)
that will remove all HTML tag occurrences from a string.
For that you can take a look at this post: Remove HTML tags from a String
after checking a lot and scratching my head thousands of times I came up with simple alteration that it needs to change your API level to 8
EDIT: I just saw your comment above about getTextContent() not being supported on Android. I'm going to leave this answer up in case it's useful to someone who's on a different platform.
If your DOM API supports it, you can call getTextContent(), as follows:
public String getParam1(Document d) {
if (d.getDocumentElement().getTagName().equals("AmigoRequest")) {
NodeList results = d.getElementsByTagName("Param1");
// Messagetype depends on what message we are reading.
if (results != null) {
return results.getTextContent();
}
}
return "";
}
However, getTextContent() is a DOM Level 3 API call; not all parsers are guaranteed to support it. Xerces-J does.
By the way, in your original example, your check for null is in the wrong place; it should be:
if (results != null && results.getLength() > 0) {
Otherwise, you'd get a NPE if results really does come back as null.
Since getTextContent() isn't available to you, another option would be to write it -- it isn't hard. In fact, if you're writing this solely for your own use -- or your employer doesn't have overly strict rules about open source -- you could look at Apache's implementation as a starting point; lines 610-646 seem to contain most of what you need. (Please be respectful of Apache's copyright and license.)
Otherwise, some rough pseudocode for the method would be:
String getTextContent(Node node) {
if (node has no children)
return "";
if (node has 1 child)
return getTextContent(node.getFirstChild());
return getTextContent(new StringBuffer()).toString();
}
StringBuffer getTextContent(Node node, StringBuffer sb) {
for each child of node {
if (child is a text node) sb.append(child's text)
else getTextContent(child, sb);
}
return sb;
}
Well i was almost there with the code...
public String getParam1(Document d) {
if (d.getDocumentElement().getTagName().equals("AmigoRequest")) {
NodeList results = d.getElementsByTagName("Param1");
// Messagetype depends on what message we are reading.
if (results.getLength() > 0 && results != null) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db;
Element node = (Element) results.item(0); // get the value of Param1
Document doc2 = null;
try {
db = dbf.newDocumentBuilder();
doc2 = db.newDocument(); //create new document
doc2.appendChild(doc2.importNode(node, true)); //import the <html>...</html> result in doc2
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
Log.d(TAG, " Exception ", e);
} catch (DOMException e) {
// TODO: handle exception
Log.d(TAG, " Exception ", e);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace(); }
return doc2. .....// All I'm missing is something to convert a Document to a string.
}
}
return "";
}
Like explained in the comment of my code. All I am missing is to make a String out of a Document. You can't use the Transform class in Android... doc2.toString() will give you a serialization of the object..
But my next step is write my own parser if this doesnt work out ;)
Not the best code but a temponary solution.
public String getParam1(String b) {
return b
.substring(b.indexOf("<Param1>") + "<Param1>".length(), b.indexOf("</Param1>"));
}
Where String b is the XML document string.