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Generate XML using JSP and containing Special Character

Hi Experts,

How to generate an XML below using JSP? and the client will get the XML when they open it using browser?
It might be too simple, but occasionally the companyName contain single apostrophe character that must be
changed into &#x27 or contain any other special character that must be converted into Hexa, if not the XML will get error. Are there any function that will automatic convert the special character?

XML Example:
------------
<Order orderid='AP001' date='25-02-02' CompanyName='Bon app&#x27;'>
     <Detail ProductCode='BL001" Quantity='12'/>
     <Detail ProductCode='BL002" Quantity='9'/>
</Order>
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falconew
Asked:
falconew
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1 Solution
 
m_onkey_boyCommented:
<%@ page contentType="text/xml;charset=ASCII" %>

<%
out.println("<Order orderid='AP001' date='25-02-02' CompanyName='Bon appetit'>");
out.println("  <Detail ProductCode='BL001" Quantity='12'/>");
out.println<Detail ProductCode='BL002" Quantity='9'/>");
out.println("</Order>");
%>

-------------------------------------------------

The magic is in the first line. The charset declration should cause the escaping of the non-ASCII characters - if you get ?, then you will have to di it manually.  The contentType="text/xml" tells the browser to expect XML.
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Venci75Commented:
you can use xerces ( http://xml.apache.org/xerces2-j/ )

this is an example code:

org.w3c.dom.Document doc = new org.apache.xerces.dom.DocumentImpl();
org.w3c.dom.Element el =  doc.createElement("Order");
el.setAttribute("test", "a&b");
org.w3c.dom.Element node = doc.createElement("Detail");
node.setAttribute("aa", "a&v");
el.appendChild(node);
node = doc.createElement("Detail");
node.setAttribute("aa", "as&");
el.appendChild(el);

org.apache.xml.serialize.XMLSerializer ss = new org.apache.xml.serialize.XMLSerializer();
ss.setOutputByteStream(System.out);
ss.serialize(doc);

(check how the & is escaped)
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falconewAuthor Commented:
I mean when in the company name there has a single apostrophe between a pair of single apostrophe, eg. companyname='Bon App''. This will cause an error when I parse the XML. So there must have a method or function which can convert the ' (single apostrophe) into Hex &#x27;

Regards,
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m_onkey_boyCommented:
The org.apache.xml.serialize.XMLSerializer will escape any characters that may break an XML document.
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falconewAuthor Commented:
Venci,
Afterward how to generate the XML to the browser? I mean when someone request my JSP page, he will get the XML..

monkeyboy,
I would appreciate if you could give a sample how to generate it to JSP using org.apache.xml.serialize.XMLSerializer. Because I'm novice here.

Regards,
Falconew
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m_onkey_boyCommented:
you can follow Venci's example, but change:

ss.setOutputByteStream(System.out);

to

ss.setOutputByteStream(out);

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falconewAuthor Commented:
hi monkeyboy,

I got this error "Incompatible type for method. Can't convert javax.servlet.jsp.JspWriter to java.io.OutputStream. ss.setOutputByteStream(out);"

                                       
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Venci75Commented:
Ok - then try to get the XML document as string:
...
java.io.ByteArrayOutputStream doc_stream = new java.io.ByteArrayOutputStream();
ss.setOutputByteStream(doc_stream);
ss.serialize(doc);
String doc_text = doc_stream.toString();
System.out.println(doc_text);

and now you can send back the doc_text to the browser:
<%= doc_text %>
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falconewAuthor Commented:
Hi Venci,

It seems to work, but It doesn't generate the XML. What is wrong? It doesn't show up on the browser.

Regards,
Falconew
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Venci75Commented:
may be you should set the correct content type for the response:
response.setContentType("text/xml");
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falconewAuthor Commented:
I have figured out.. you forget the line...
Here it is I correct your code.
Thanks for all of you.

org.w3c.dom.Document doc = new org.apache.xerces.dom.DocumentImpl();
org.w3c.dom.Element el =  doc.createElement("Order");
doc.appendChild(el);
el.setAttribute("test", "a&b");
org.w3c.dom.Element node = doc.createElement("Detail");
node.setAttribute("aa", "a&v");
el.appendChild(node);
node = doc.createElement("Detail");
node.setAttribute("aa", "as&");
el.appendChild(node);
0

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