如何将Java JAXB Schema类导出到xsd文件？

Question

I'm running into a problem with some XML validation and am trying to debug my problem. I am generating my XSDs on the fly with JAXBContext.generateSchema(), and then creating a unified schema with SchemaFactory.newSchema(schemas). However, my validation is failing. I'd like to see if the unified schema that newSchema is creating is as I expect, however I cannot seem to find a way to export the resulting Schema class to a string or a text file.

Is there any way to export a javax.xml.validation.Schema class into a readable String and/or XSD file? I looked through the API and cannot seem to find anything.

Thanks,

Eric

Answer 1

Instead of combining your schemas after creating them from JAXBContext.generateSchema(), why not just generate them all at once from your JAXBContext.

JAXBContext jc = JAXBContext.newInstance( new Class[] { Class1.class,
                                                        Class2.class,
                                                        Class3.class
                                                      }
                                        );
jc.generateSchema(new SchemaOutputResolver() {
    @Override
    public Result createOutput(String namespaceUri, String suggestedFileName) throws IOException {
      File file = new File(suggestedFileName);
      return new StreamResult(file);
    }
});