XML 文件的操作(四)

<!NOTATION gif SYSTEM "image/gif">
<!NOTATION jpg SYSTEM "iexplore.exe">

<!ENTITY logo SYSTEM "http://www.sunxin.org/logo.gif" NDATA gif>
<!ENTITY banner SYSTEM "http://www.sunxin.org/banner.gif" NDATA jpg>

<!NOTATION gif SYSTEM "image/gif">
<!NOTATION jpg SYSTEM "iexplore.exe">
<!ENTITY logo SYSTEM "http://www.sunxin.org/logo.gif" NDATA gif>
<!ENTITY banner SYSTEM "http://www.sunxin.org/banner.gif" NDATA jpg>

第二个dtd文件，包含一个dtd文件：

<!ELEMENT hr (#PCDATA)>
<!ENTITY % entitiesDecl SYSTEM "entity.dtd">
%entitiesDecl;

<!ELEMENT hr (#PCDATA)>
<!ENTITY % entitiesDecl SYSTEM "entity.dtd">
%entitiesDecl;

xml文件，包含第二个dtd文件：

package com.ibm.xml;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Entity;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Notation;
import org.xml.sax.SAXException;

/**
 * 获取xml所有元素，连接dtd文件
 * @author Administrator
 *
 */
public class DocTypePrinter {

    public static void main(String arge[]){
        DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
        try{
            //读取文件
            DocumentBuilder db=dbf.newDocumentBuilder();
            Document doc=db.parse(new File("hr.xml"));
            DocumentType docdocType=doc.getDoctype();
            if(docType!=null)
            {
                //读取xml文件内的内容
                //xml dtd名称
                System.out.println("dtd name: "+docType.getName());
                //xml public id
                System.out.println("dtd public id: "+docType.getPublicId());
                //xml 系统标示信息
                System.out.println("dtd system id: "+docType.getSystemId());
                //xml 获取引用信息
                System.out.println("dtd internal subset: "+docType.getInternalSubset());
                System.out.println();
                //获取实体内容
                NamedNodeMap entities=docType.getEntities();
                //节点数目
                int len=entities.getLength();
                for(int i=0;i<len;i++)
                {
                    //获取实体
                    Entity entity=(Entity)entities.item(i);
                    //获取实体名称
                    System.out.println("entity name: "+entity.getNodeName());
                    //获取外部实体名称
                    System.out.println("notation name: "+entity.getNotationName());
                    //获取实体公共标示
                    System.out.println("entity public id: "+entity.getPublicId());
                    //获取实体系统标示
                    System.out.println("entity system id: "+entity.getSystemId());
                    System.out.println();
                }
                //获取记号，映射
                NamedNodeMap notations=docType.getNotations();
                //节点数目
                len=notations.getLength();
                for(int i=0;i<len;i++)
                {
                    //获取映射
                    Notation notation=(Notation)notations.item(i);
                    //映射名称
                    System.out.println("notation name: "+notation.getNodeName());
                    //映射公共标示
                    System.out.println("notation public id: "+notation.getPublicId());
                    //映射系统标示
                    System.out.println("notation system id: "+notation.getSystemId());

                    System.out.println();
                }
            }
        }catch (ParserConfigurationException e)
        {
            // TODO 自动生成 catch 块
            e.printStackTrace();
        }
        catch (SAXException e)
        {
            // TODO 自动生成 catch 块
            e.printStackTrace();
        }
        catch (IOException e)
        {
            // TODO 自动生成 catch 块
            e.printStackTrace();
        }
    }
}