Velocity Template is not encoding charecter,instead throwing an error message.

[Priya Gowda]

Hi All,

I am using velocity template to send email(In chinese language).So using hexa decimal charecter in template.But am getting some lexical error.
Here i have shown both normal java code implementation and template implemnetation.

import java.io.StringWriter;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.context.Context;

public class VelocityTest
{
	public static void main(String args[]) throws Exception
	{
		VelocityEngine ve = new VelocityEngine();
		ve.init();
		Context context = new VelocityContext();
		context.put("val", new SimpleValue());
		StringWriter writer = new StringWriter();
		ve.evaluate(context, writer, "test","#set($v = \"\u8bf7\u6c42:\")$val.setSubject($v)$val.getSubject()");
        System.out.print(writer.toString());
	}
}

Here in the above normal java piece of code, \"\u8bf7\u6c42:\" will encode properly in to Chinese character.

But if I use same \"\u8bf7\u6c42:\" in velocity template(eml.vsl) using

$message.setSubject(\"\u8bf7\u6c42:\")

Note-message is an object of class EmailMsg

it is throwing java.lang.Exception: Error processing velocity script:
Lexical error: org.apache.velocity.runtime.parser.TokenMgrError: Lexical error at line 59, column 11. Encountered: "\"" (34), after : "\\"

Can anyone let me know what could be the fix for it.

Thanks in Advance,
Priya Gowda.

[John Jai]

Hi - is SimpleValue your custom class or it's present in some other jar. I am facing compilation issues.

[Priya Gowda]

Thanks for your response!

public class SimpleValue
{
	private String mSubject = null;

	public String getSubject()
	{
		return mSubject;
	}

	public void setSubject(String mSubject)
	{
		this.mSubject = mSubject;
	}
}

This works fine as i give the input(hex code) in simple java.

but i have problem in reading the same input from velocity template.i read the template from sample java code as below and template has that hexadecimal charecter.

  import org.apache.velocity.VelocityContext;
   public class Template
   {
  VelocityContext lVelContext = new VelocityContext();
  lVelContext.put("escapeTool", new org.apache.velocity.tools.generic.EscapeTool());
  String lTemplateName = getTemplateName(info);
           String[] lTemplatesNames = lTemplateName.split(",");
           
           for (int i = 0; i < lTemplatesNames.length; i++)
           {
              1-EmailMsg lEmailMsg = new EmailMsg();
              2-lVelContext.put("message", lEmailMsg);
              3-lContent = new ByteArrayOutputStream();
              4-lWriter = new OutputStreamWriter(lContent, "UTF-8");
  
              // Process the VSL template with the context
              5-Template lTemplate = mVelEngine.getTemplate(lTemplatesNames[i], "UTF-8");
              6-lTemplate.merge(lVelContext, lWriter);
              7-lWriter.flush();
              8-lWriter.close();
  
              //byte[] lResult = lContent.toByteArray();
              9-lEmailMsg.setContent(lContent.toString("UTF-8"));
              
              EmailOutboundMsg lEmailOutboundMsg = (EmailOutboundMsg) message;            
              lEmailOutboundMsg.addToEmailMsgList(lEmailMsg);           
           }
      }
      }

after line number 5 it throws a lexical error mentioned in my query.
Thanks!

[Campbell Ritchie]

Welcome to the Ranch

You will have to find out why the Template does not allow quote marks after that backslash. It is obviously something to do with the permitted types of text in Velocity.