Apache Velocity can not Initialize

Question

When i try to initialize velocity engine using

VelocityEngine engine = new VelocityEngine();
engine.init();

I encounter the same error when i try

Velocity.init();

org.apache.velocity.exception.VelocityException: Failed to initialize an instance of org.apache.velocity.runtime.log.ServletLogChute with the current runtime configuration.

What may cause this exception?

Solution 1

try something like this:

Properties p = new Properties();
p.setProperty("resource.loader", "class");
p.setProperty("class.resource.loader.description", "Velocity Classpath Resource Loader");
p.setProperty("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");

    try {
      Velocity.init(p);
    } catch(...., and handle excpetion
  }

you'll now be able to call:

VelocityContext vContext = new VelocityContext(context);
//put things into vContext
StringWriter sw = new StringWriter();
    try {
      template.merge(vContext, sw);

etc.

Solution 2

The problem was solved putting the code below in my app:

java.util.Properties p = new java.util.Properties();
p.setProperty("runtime.log.logsystem.class", "org.apache.velocity.runtime.log.NullLogSystem");
try {
    Velocity.init(p);
} catch (Exception e) {
    System.out.println("FAIL!");
}