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A005AddCustomResourceLoader.java
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A005AddCustomResourceLoader.java
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package advanced;
import java.awt.Desktop;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;
import com.pd4ml.PD4ML;
/**
* Generates PDF from a simple HTML string. Page format, margins etc are
* default.
*/
public class A005AddCustomResourceLoader {
public static void main(String[] args) throws IOException {
try {
// register new URL protocol to avoid MalformedURLException
URL.setURLStreamHandlerFactory(new URLStreamHandlerFactory() {
public URLStreamHandler createURLStreamHandler(String protocol) {
return DummyProvider.PROTOCOL.equals(protocol) ? new URLStreamHandler() {
protected URLConnection openConnection(URL url) throws IOException {
return new URLConnection(url) {
public void connect() throws IOException {
}
};
}
} : null;
}
});
} catch (Throwable e) {
// most probably "java.lang.Error: factory already defined"
// by a mass example run
return;
}
PD4ML pd4ml = new PD4ML();
pd4ml.addCustomResourceProvider("advanced.DummyProvider");
// read and parse HTML, read by the custom protocol
pd4ml.readHTML(new URL("dummy:my.exotic.protocol"));
File pdf = File.createTempFile("result", ".pdf");
FileOutputStream fos = new FileOutputStream(pdf);
// render and write the result as PDF
pd4ml.writePDF(fos);
// open the just-generated PDF with a default PDF viewer
if ( args.length == 0 ) {
Desktop.getDesktop().open(pdf);
}
}
}