Java Mapping with CDATA

Question

One simplest way is read the data element value as the string and ignore first  six or seven characters by using substring method or so... Use the return value string for parsing the values from respective tag element using parser or manually

Answer 1

Hi Xinaxu,
Here is the java mapping code.
public class Cdata implements StreamTransformation{
     public static void main(String[] args) {
          try{
               Cdata genFormat=new Cdata();
               FileInputStream in=new FileInputStream("C:\\Apps\\acm\\cdata.xml");
               FileOutputStream out=new FileOutputStream("C:\\Apps\\acm\\cdata1.xml");
               genFormat.execute(in,out);
               catch(Exception e)
               e.printStackTrace();
     public void execute(InputStream in, OutputStream out)
               throws StreamTransformationException {
          try
               DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
               DocumentBuilder builderel=factory.newDocumentBuilder();
               /*input document in form of XML*/
               Document docIn=builderel.parse(in);
               /*document after parsing*/
               Document docOut=builderel.newDocument();
               TransformerFactory tf=TransformerFactory.newInstance();
               Transformer transform=tf.newTransformer();
               Element root,child,child1;
               root=docOut.createElement("Header");
               root.setAttribute("xmlns","urn:bp:xi:hr:edm:test:100");
               NodeList l;
               Node n;
               l=docIn.getElementsByTagName("Data");
               int i,len=l.getLength();
               String charSet[]={"<",">","&","'","""};
               String replaceSet[]={"<",">","&","'","\""};
               for(i=0;i<len;++i)
                    child=docOut.createElement("Data");
                    if(l.item(i).hasChildNodes())
                         n=l.item(i).getFirstChild();
                         //System.out.println(n.getNodeType());
                         //System.out.println(n.getNodeValue());
                         int j;
                         if(n.getNodeType()==3 && n.getNodeValue().indexOf("CDATA")>=0)
                              // that means this is Cdata section
                              //capture data in a string
                              String s=n.getNodeValue();
                              /*if you are sure that string contains
                               * valid xml tags. You can parse
                               * the tags.First replace
                               * &lt; with < less than
                                 &gt; with > greater than
                                 &amp; with & ampersand 
                           &apos; with ' apostrophe
                           &quot; with " quotation mark
                           to avoid exceptions
                              //System.out.println("s="+s);
                              for(j=0;j<charSet.length;++j)
                                   s=s.replaceAll(charSet[j], replaceSet[j]);
                              int ll;
                              ll=s.length();
                              String a="";
                              int count=0;
                              //extract only xml tags from string
                              for(j=0;j<ll;++j)
                                   if(count<2)
                                        if(s.charAt(j)=='<')
                                             count++;
                                        if(count<2)
                                             continue;
                                   a=a+s.charAt(j);
                              //System.out.println("a="+a);
                              for(j=a.length()-1,count=0;j>=0;--j)
                                        if(a.charAt(j)=='>')
                                             count++;
                                        if(count==2)
                                             break;
                              if(j>=0)
                                   s=a.substring(0,j+1);
                              System.out.println(s);
                              org.xml.sax.InputSource inStream = new org.xml.sax.InputSource();
                             inStream.setCharacterStream(new java.io.StringReader(s));
                              DocumentBuilder b=factory.newDocumentBuilder();
                              Document cdataSection=b.parse(inStream);
                              child1=(Element) docOut.importNode(cdataSection.getDocumentElement(),true);
                              child.appendChild(child1);
                         else if(n.getNodeType()==4)
                              // that means this is Cdata section
                              //capture data in a string
                              String s=n.getNodeValue();
                              /*if you are sure that string contains
                               * valid xml tags. You can parse
                               * the tags.  replace invalid characters
                               * before parsing
                              for(j=0;j<charSet.length;++j)
                                   s=s.replaceAll(charSet[j], replaceSet[j]);
                              org.xml.sax.InputSource inStream = new org.xml.sax.InputSource();
                             inStream.setCharacterStream(new java.io.StringReader(s));
                              DocumentBuilder b=factory.newDocumentBuilder();
                              Document cdataSection=b.parse(inStream);
                              child1=(Element) docOut.importNode(cdataSection.getDocumentElement(),true);
                              child.appendChild(child1);
                    root.appendChild(child);
               docOut.appendChild(root);
               transform.transform(new DOMSource(docOut), new StreamResult(out));
          catch(Exception e)
               e.printStackTrace();
     public void setParameter(Map arg0) {
          // TODO Auto-generated method stub
Hope this solves your problem.
regards
Anupam