介绍

    通过Schema来校验File格式的正确与否。

package shuai.study.validator;

import java.io.File;
import java.io.IOException;
import java.net.URL;

import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import org.xml.sax.SAXException;

public class FormatValidator {
	public static boolean isFormatValid(URL urlSchema, Source source) {
		boolean validatorFlag = true;

		SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");

		try {
			Schema schema = schemaFactory.newSchema(urlSchema);

			Validator validator = schema.newValidator();
			validator.validate(source);
		} catch (SAXException se) {
			validatorFlag = false;
			se.printStackTrace();
		} catch (IOException ioe) {
			validatorFlag = false;
			ioe.printStackTrace();
		}

		return validatorFlag;
	}

	public static void main(String[] args) {
		URL urlSchema = FormatValidator.class.getResource("/schema/TestFileFormat.xsd");

		String sourceFileString = FormatValidator.class.getResource("/xml/TestSourceFile.xml").getPath();
		Source source = new StreamSource(new File(sourceFileString));

		boolean validatorFlag = FormatValidator.isFormatValid(urlSchema, source);

		if (validatorFlag) {
			System.out.println("Analyze " + source.getSystemId() + " successfully");
		} else {
			System.out.println("Fail to analyze " + source.getSystemId());
		}
	}
}