Exception:"Decrease the number of char between the beginning of the document and its root element"

Question

I'm now using a javabean in my jsp page to parse xml;when my xml file's size is
about 10k,it just work fine;when my xml file's size became 50k,it throws the followng
Exception:
Failed to open xml document,Failed to retrieve Public id or system id from the
document. Decrease the number of char between the beginning of the document and
its root element. But when I run this javabean in JBuild ,it works fine no matter
how big the xml file becomes;
Why? the error message is in the attachment.

Answer 1

The prologue must be included at the top of the document, followed by the root
          element.
          joden2000 wrote:
          > what does this exception mean:decrease the number of char between the beginning
          > of the document and its root element? When my xml file is about 10k,it works
          > just fine,when it becomes 50k ,the exception show.How can I deal with this?