寫了一個java web 動態伺服器，主要通過內部類來實現，動態類使用了外部類，採用了
classforname 執行個體化，動態類的構造方法不能帶參數， 效果都出來了，分享給有需要的
朋友。判斷做的不夠多，
寫得不夠好，感謝指出缺點。以下是代碼：
靜態檔案index.html：
<html> <head> <title>簡單的web伺服器</title> </head> <body> <div align="center">簡單的web靜態伺服器</div> </body> </html>
主要核心代碼：
import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.net.MalformedURLException; import java.net.ServerSocket; import java.net.Socket; import java.net.URL; import java.net.URLClassLoader; /** * web處理類 */ class WebProcess{ private Request request; private Response response; public WebProcess(Request request, Response response) { // TODO Auto-generated constructor stub this.request=request; this.response=response; this.process(); } private void process() { // TODO Auto-generated method stub String uri=request.getUri(); System.out.println("uri---------------------------"+uri); String uriSuffix=uri.substring(uri.indexOf('.')+1); System.out.println("uriSuffix------------"+uriSuffix); if("htmlxmlhtm".indexOf(uriSuffix)>-1){ System.out.println("靜態檔案"); File fileToSend=new File(uri); if(fileToSend.exists()){ System.out.println("存在檔案"); try { FileInputStream fis=new FileInputStream(fileToSend); byte[] data=new byte[fis.available()]; fis.read(data); //System.out.println(data.length); response.out(new String(data)); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } }else{ System.out.println("不存在檔案"); response.out("您要訪問的網頁不存在"); } }else{ System.out.println("動態檔案"); //Visit v=new Visit(response,request); File fileToSend1=new File(uri); System.out.println("fileToSend----------------"+fileToSend1); /* if(fileToSend1.exists()){*/ //System.out.println("類檔案存在"); try { //擷取需要的的類的路徑 URL url=new URL("file:\\D:\\Users\\Administrator\\Workspaces\\MyEclipse 8.6\\2013-08-21\\src"); String classname=uri; System.out.println("url-----------------"+url); ClassLoader cl=new URLClassLoader(new URL[]{url}); Class d=cl.loadClass(classname); System.out.println(d); //System.out.println("cl-----------------------"+cl); Object c=Class.forName(uri).newInstance(); Method method=c.getClass().getMethod("process", Response.class,Request.class); method.invoke(c,response,request); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InstantiationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchMethodException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace(); } /*}else{ System.out.println("類檔案不存在"); }*/ } } } /** * 響應類 */ class Response{ private PrintWriter writer; public Response(OutputStream outputStream) { // TODO Auto-generated constructor stub this.writer=new PrintWriter(outputStream,true); //this.out(data); } public void out(String data) { // TODO Auto-generated method stub System.out.println("out()-----------------start"); writer.println(data); } } /** * 請求類 */ class Request{ private InputStream input; public Request(InputStream inputStream) { // TODO Auto-generated constructor stub this.input=inputStream; //this.getUri(); } public String getUri(){ String resource=null; System.out.println("getUri()-------------------start--"); BufferedReader in=new BufferedReader(new InputStreamReader(input)); try { String line=in.readLine(); resource=line.substring(line.indexOf('/')+1, line.lastIndexOf('/')-5); System.out.println("resource-----------"+resource); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return resource; } } /** * @author Administrator *採用了線程 */ public class ServerWeb implements Runnable { private static final int port = 8085; ServerSocket serversocket; /** * @param args */ public ServerWeb(){ new Thread(this).start(); //把當前類設定為一個線程 } @Override public void run() { // TODO Auto-generated method stub System.out.println("run()---------------------start-----"); try { serversocket=new ServerSocket(port); System.out.println("serversocket--------------------"+serversocket.getLocalPort()); while(true){ Socket socket=serversocket.accept(); System.out.println("socket----------------------"+socket.getLocalPort()); Request request=new Request(socket.getInputStream()); Response response=new Response(socket.getOutputStream()); WebProcess webprocess=new WebProcess(request,response); socket.close(); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void main(String[] args) { // TODO Auto-generated method stub new ServerWeb(); } }
獨立動態類的代碼：
import java.util.Date; public class Visit { public Visit(/*Response response, Request request*/) { // TODO Auto-generated constructor stub /*this.request=request; this.response=response;*/ //this.process(); } public void process(Response response, Request request){ response.out("動態網頁"+new Date().toString()); System.out.println("process------------start"); } }
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