Question

I found some posts related to this issue but not able to find the solution. Problem is that on character() function, ch[] array contains incomplete or last elements from last call and this happens sometimes but 98% of times works properly. File name has no special chars and no strange names.

if we have,

<tag>image1test.jpg<tag> 
<tag>image2bla.jpg<tag>

when working, char array contains proper values but when not, when characters function is called for second tag from example, we get,

[i,m,a,g,e,2,b,e,s,t] (residual chars from last call)

how to solve it? thanks.

@Override
public void characters(char ch[], int start, int length) {
if(this.v_new){
myNewsXMLDataSet.setNews(new String(ch, start, length));

}

Answer 1

The parser isn’t required to call characters(char[],int,int) on your handler only once. You’ve got to expect multiple calls, and process the value only after the endElement() method has been called.

public class Handler extends DefaultHandler {

    private StringBuilder sb = new StringBuilder();
    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        sb.append(ch, start, length);

    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        doStuffWith(sb.toString());
        sb = new StringBuilder();
    }
}