xml文件正确性验证类实现
2010-10-18 09:38:44 来源:WEB开发网核心提示:很多时候我们的应用程序或者web程序需要用到xml文件进行配置,而最终的程序是需要给客户使用的,所以xml或者也需要客户来写,而客户来写的话的,就不能保证xml文件绝对的正确,于是我写了这个类,主要功能就是验证xml书写文件是否符合定义的xsd规范.package common.xml.validator;import
很多时候我们的应用程序或者web程序需要用到xml文件进行配置,而最终的程序是需要给客户使用的,所以xml或者也需要客户来写,而客户来写的话的,就不能保证xml文件绝对的正确,于是我写了这个类,主要功能就是验证xml书写文件是否符合定义的xsd规范.
package common.xml.validator;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.net.URL;import javax.xml.XMLConstants;
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;/** *//**
* @author suyuan
*
*/
public class XmlSchemaValidator { private boolean isValid = true;
private String xmlErr = ""; public boolean isValid() {
return isValid;
} public String getXmlErr() {
return xmlErr;
} public XmlSchemaValidator()
{
}
public boolean ValidXmlDoc(String xml,URL schema)
{
StringReader reader = new StringReader(xml);
return ValidXmlDoc(reader,schema);
} public boolean ValidXmlDoc(Reader xml,URL schema)
{
try {
InputStream schemaStream = schema.openStream();
Source xmlSource = new StreamSource(xml);
Source schemaSource = new StreamSource(schemaStream);
return ValidXmlDoc(xmlSource,schemaSource); } catch (IOException e) {
isValid = false;
xmlErr = e.getMessage();
return false;
}
} public boolean ValidXmlDoc(String xml,File schema)
{
StringReader reader = new StringReader(xml);
return ValidXmlDoc(reader,schema);
} public boolean ValidXmlDoc(Reader xml,File schema)
{
try {
FileInputStream schemaStream = new FileInputStream(schema);
Source xmlSource = new StreamSource(xml);
Source schemaSource = new StreamSource(schemaStream);
return ValidXmlDoc(xmlSource,schemaSource); } catch (IOException e) {
isValid = false;
xmlErr = e.getMessage();
return false;
}
} public boolean ValidXmlDoc(Source xml,Source schemaSource)
{
try { SchemaFactory schemafactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
if(xml==null||xml.equals(""))
{
return false;
}
Schema schema = schemafactory.newSchema(schemaSource);
Validator valid = schema.newValidator();
valid.validate(xml);
return true; } catch (SAXException e) {
isValid = false;
xmlErr = e.getMessage();
return false;
}
catch (IOException e) {
isValid = false;
xmlErr = e.getMessage();
return false;
}
catch (Exception e) {
isValid = false;
xmlErr = e.getMessage();
return false;
}
}
}
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