使用XML Schema进行校验

最新推荐文章于 2024-05-23 21:15:00 发布

原创最新推荐文章于 2024-05-23 21:15:00 发布 · 98 阅读

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CC 4.0 BY-SA版权

本文介绍了一个用于XML文件验证的接口XmlValidator及其实现方法，同时提供了一个基于W3C DOM标准实现的资源解析器LSResourceResolverImpl，该解析器能够根据给定路径加载XML Schema并创建输入流。

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import java.util.List;

public interface XmlValidator {
	public abstract Boolean validate(String xmlContent, List<String> errors);

}

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;

import org.apache.log4j.Logger;
import org.w3c.dom.ls.LSInput;

public class LSInputImpl implements LSInput {
	private Logger logger = Logger.getLogger(LSInputImpl.class);
	private String publicId;
	private String systemId;
	private BufferedInputStream inputStream;

	public LSInputImpl(String publicId, String sysId, InputStream input) {
		this.publicId = publicId;
		this.systemId = sysId;
		this.inputStream = new BufferedInputStream(input);
	}

	public String getPublicId() {
		return publicId;
	}

	public void setPublicId(String publicId) {
		this.publicId = publicId;
	}

	public String getSystemId() {
		return systemId;
	}

	public void setSystemId(String systemId) {
		this.systemId = systemId;
	}

	public BufferedInputStream getInputStream() {
		return inputStream;
	}

	public void setInputStream(BufferedInputStream inputStream) {
		this.inputStream = inputStream;
	}

	public String getBaseURI() {
		return null;
	}

	public InputStream getByteStream() {
		return null;
	}

	public boolean getCertifiedText() {
		return false;
	}

	public Reader getCharacterStream() {
		return null;
	}

	public String getEncoding() {
		return null;
	}

	public String getStringData() {
		synchronized (inputStream) {
			try {
				byte[] input = new byte[inputStream.available()];
				inputStream.read(input);
				String contents = new String(input);
				return contents;
			} catch (IOException e) {
				logger.info("Exception " + e);
				return null;
			}
		}
	}

	public void setBaseURI(String baseURI) {
	}

	public void setByteStream(InputStream byteStream) {
	}

	public void setCertifiedText(boolean certifiedText) {
	}

	public void setCharacterStream(Reader characterStream) {
	}

	public void setEncoding(String encoding) {
	}

	public void setStringData(String stringData) {
	}
}

import java.io.InputStream;

import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;

public class LSResourceResolverImpl implements LSResourceResolver {
	private String schemaFilePath;
	
	public LSResourceResolverImpl(String schemaFilePath) {
		this.schemaFilePath = schemaFilePath;
	}
	
	public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
		InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream(this.schemaFilePath + systemId);
		return new LSInputImpl(publicId, systemId, resourceAsStream);
	}	
}