httpserver.java

在首次运行时

package htmlbrowser;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Properties;
import java.io.IOException;
import java.util.Enumeration;
import java.net.ServerSocket;
import java.net.Socket;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;


public class HttpServer
{
    private int iPort = 8080; //default port
    public static String Basic_Root=System.getProperty("user.dir");
    public static String WEB_ROOT = System.getProperty("user.dir") +
                                    File.separator + "webroot";
    public static int count=0;

    public HttpServer()
    {
        System.out.println("欢迎使用Erik‘s 快速Web服务器，本服务器只支持静态网页。");
        System.out.println("检查配置文件及网页文件夹...");
        getConfig();
        start();
    }

    public static void main(String[] args)
    {
        HttpServer httpserver = new HttpServer();
    }

    private void getConfig()
    {
        File fileCon=new File(Basic_Root,"config.ini");
        File fileDir=new File(WEB_ROOT);
        File fileWeb=new File(WEB_ROOT,"index.htm");
        if(!fileCon.exists())
        {
            System.out.println("配置文件Config.ini损坏，重建中...");
            reBuildConfig(fileCon);
        }
        if (!fileDir.exists())
        {
            System.out.println("网页存放文件夹不存在，重建中...");
            fileDir.mkdir();
            System.out.print("完成！请在");
            System.out.println(WEB_ROOT+"中放置网页文件...");
            System.out.println("Web服务器将重新初始化...");
            getConfig();
        }
        if (!fileWeb.exists())
        {
            reBuildWeb(fileWeb);
        }
        Properties pps = new Properties();

        try
        {
            pps.load(new FileInputStream("config.ini"));
            Enumeration enumer = pps.propertyNames();
            String strKey = (String) enumer.nextElement();
            String strValue = pps.getProperty(strKey);
            if (strValue.equals("") != true)
            {
                WEB_ROOT = strValue;
            }
            System.out.println("网页文件的存放路径为： "+WEB_ROOT);
            strKey = (String) enumer.nextElement();
            strValue = pps.getProperty(strKey);
            if (strValue.equals("") != true)
            {
                iPort = Integer.parseInt(strValue);
            }
            System.out.println("Web服务器访问端口为："+iPort);
            System.out.println("您可以修改Config.ini文件重新设定以上配置");
            System.out.println("启动检查完成，服务器初始化中...");

        }
        catch (IOException ex)
        {
            ex.printStackTrace();
        }

    }

    public void start()
    {

        System.out.println("Web 服务器启动中...");
        ServerSocket serverSocket;
        try
        {
            serverSocket = new ServerSocket(iPort);
            System.out.println("Web 启动完成！");
            System.out.println("您现在可以在浏览器中访问http://localhost:8080/，以测试服务器是否运行");
            while (true)
            {
                Socket socket = null;
                InputStream input = null;
                OutputStream output = null;
                System.out.println("等待连接...");
                socket = serverSocket.accept();
                System.out.println(socket.getInetAddress().toString()+"请求连接");
                input=socket.getInputStream();
                output=socket.getOutputStream();
                System.out.println("服务器开始处理第"+(++count)+"次连接");
                //开始处理并分析请求信息
                Request request=new Request(input);
                request.parse();

                //开始发送请求资源
                Response response=new Response(output);
                response.setRequest(request);
                response.sendStaticResource();

                //关系连接
                socket.close();
                System.out.println("连接已关闭！");

            }
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
            System.out.println("3");
            //continue;
        }
    }
    private void reBuildConfig(File file)
    {

        try
        {
            file.createNewFile();
            FileOutputStream fos=new FileOutputStream(file);
            PrintStream sp=new PrintStream(fos);
            sp.println("WEB_ROOT=");
            sp.println("PORT=");
            sp.close();
            System.out.println("配置文件Config.ini创建成功，您可以修改WEB_ROOT的值改变网页文件的存放路径，修改PORT的值改变访问端口！");
        }
        catch (IOException ex)
        {
            ex.printStackTrace();
            System.out.println("重建配置文件Config.ini失败");
            System.out.println("服务器将使用默认配置...");
        }
    }
    private void reBuildWeb(File file)
    {
        try
        {
            file.createNewFile();
            FileOutputStream fos=new FileOutputStream(file);
            PrintStream sp=new PrintStream(fos);
            sp.println("<html>");
            sp.println("<head>");
            sp.println("<title>Erik'简单Web服务器</title>");
            sp.println("</head>");
            sp.println("<body>");
            sp.println("<div align="+"center"+">服务器已经成功运行 </div>");
            sp.println("</body>");
            sp.println("</html>");
            sp.close();

        }
        catch (Exception ex)
        {
            ex.printStackTrace();
        }
    }