使用XML作为配置文件的方式完成模拟TOMCAT（XML,socket访问浏览器，DTD）

import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.Element;import org.dom4j.io.SAXReader;import org.junit.Test;public class dom4j {@Testpublic void demo1() throws DocumentException{SAXReader sxr=new SAXReader();//创建解析器Document docu = sxr.read("src/xml/demo1.xml");//解析xml文档Element root = docu.getRootElement();//获得根节点System.out.println(root.getName());//打印根节点名称Element person=root.element("Person");//获得根节点第一个子节点Element person1 = (Element) root.elements("person").get(1);//获得根节点第二个子节点Element na = person1.element("name");System.out.println(na.getText());//打印子节点中的文本}}

@Testpublic void demo2() throws DocumentException{SAXReader sxr=new SAXReader();//创建解析器Document docu = sxr.read("src/xml/demo1.xml");//解析xml文档//List<Element> list = docu.selectNodes("//name");//查询所有的name元素List<Element> list = docu.selectNodes("//person[@id]");//查询带有id属性的person元素for(Element i:list){System.out.println(i.attributeValue("id"));}}
import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.Element;import org.dom4j.Node;import org.dom4j.io.SAXReader;public class Myserver {public static void main(String args[]) throws IOException, DocumentException{//解析XML//创建解析器SAXReader sr=new SAXReader();//解析XML文档Document docu = sr.read("src/Confi/server.xml");Element e = (Element) docu.selectSingleNode("//Connector['@port']");//获得带有port属性的Connector节点 String s = e.attributeValue("port");//获得属性值 int port=Integer.parseInt(s);ServerSocket ss=new ServerSocket(port);//创建服务器的socketwhile(true){Socket sock = ss.accept();//服务器监听  new Thread(new myservice(sock)).start();//新建一个线程，执行run方法}}}
import java.io.BufferedReader;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.Socket;import org.omg.CORBA.portable.OutputStream;public class myservice implements Runnable {private Socket sock;public myservice(Socket sock) {super();this.sock = sock;}public void run() {// TODO Auto-generated method stubtry {InputStream is = sock.getInputStream();//从浏览器中读取输入流InputStreamReader isr=new InputStreamReader(is);BufferedReader br=new BufferedReader(isr);String s=br.readLine();String path = s.split(" ")[1];//读取输入流的第二个字节，包含html文件名System.out.println(path);FileInputStream fis=new FileInputStream("src"+path);//读取相应的html文件java.io.OutputStream os=sock.getOutputStream();//向浏览器发送相应信息os.write("HTTP/1.1 200 OK\r\n".getBytes());os.write("\r\n".getBytes());byte[] buffer=new byte[1024];//长度为1024的缓存bufferint len=0;while((len=fis.read(buffer))!=-1){//将fis中的字节缓冲到buffer中,每次缓冲1024个字节，相当于把文件按照1024进行分割，指导文件末尾os.write(buffer,0,len);System.out.println(len);}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}