简易Web服务器实现

1、简易Web服务器实现实现了一下简易的web服务器，由于只是简易的web服务器，所以并没有什么特别高深的技术含量。（文章来源：北大青鸟成都锦江）1. TCP通信(socket)2. IO流3. 线程池技术服务器架构也简单:Request类主要是实现解析URL的功能，以获取html文件的路径。Response类实现读取html文件并且向浏览器输出html文件内容。Server类整合Request类和Response类，实现线程的run方法。Test类实现线程池，同时也是服务启动类。下图是浏览器发给服务器的内容:下面是效果图：1.服务器输出的日志页面效果图：下面贴一些关键代码（了解详情）：java

2、view plain copy1. package request;2.5.6. public class Request 7. private String fileroute=null;8. private BufferedReader br=null;9.10. public Request(BufferedReader br) 11. this.br=br;12. 13. public void parse()14.15. String info=null;16. StringBuffer msg=new StringBuffer();17. try 18.19. while(info

3、=br.readLine()!=null && info.length()>0)/循环读取客户端的信息20. msg.append(info);21. 22. catch (IOException e) 23. / TODO Auto-generated catch block24. e.printStackTrace();25. 26.27. fileroute=parseFileroute(msg.toString();28. 29. /由浏览器发给服务器内容的规律进行读取文件路径30. private String parseFileroute(String req

4、uestString) 31. int index1, index2; 32. index1 = requestString.indexOf(' ');33. if (index1 != -1) 34. index2 = requestString.indexOf(' ', index1 + 1);35. if (index2 > index1)36. return requestString.substring(index1 + 1, index2);37. 38. return null;39. 40. /获取html文件名41. public Str

5、ing getFileroute()42. return fileroute;43. 44. java view plain copy1. package response;2.9.10. public class Response 11. private PrintWriter pw=null;12. private String fileroute=null;13.14. public Response(PrintWriter pw, String fileroute) 15. this.pw=pw;16. this.fileroute=fileroute;17. 18.19. publi

6、c void doresponse() 20. File file=new File("webapp"+fileroute);22. if(!file.exists() | !file.isFile() /不是文件或不存在23. return;24.25. FileInputStream is=null;26. InputStreamReader isr=null;27. BufferedReader br=null;28.29. try 30. is=new FileInputStream(file);31. isr=new InputStreamReader(is);3

7、2. br=new BufferedReader(isr);33. String info;34. StringBuffer msg=new StringBuffer();35. while(info=br.readLine()!=null && info.length()>0)/循环读取html文件内容36. msg.append(info);37. 38. /将文件内容输出到浏览器39. pw.write(msg.toString();40. pw.flush();41. catch (IOException e) 42. / TODO Auto-generated

8、catch block43. e.printStackTrace();44. finally45. /关闭资源46. try 47. if(br!=null)48. br.close();49. if(isr!=null)50. isr.close();51. if(is!=null)52. is.close();53. catch (IOException e) 54. e.printStackTrace();55. 56. 57.58. 59. java view plain copy1. package server;2.11.12. import request.Request;13.

9、 import response.Response;14.15. /*16. * 基于TCP协议的Socket通信，实现用户登陆17. * 服务器端18. */19. public class Server implements Runnable 20. private Socket socket=null;21. public Server(Socket socket) 22. this.socket=socket;23. 24.25. Override26. public void run() 名字28. InputStream is=null;29. InputStreamReader

10、isr=null;30. BufferedReader br=null;31. OutputStream os=null;32. PrintWriter pw=null;33. /1.创建一个服务器端Socket，即ServerSocket，指定绑定的端口，并监听此端口34. try 35.36. /接收请求 进入阻塞状态37. InetAddress address=socket.getInetAddress();41. is=socket.getInputStream();42. isr=new InputStreamReader(is);43. br=new BufferedReader

11、(isr);44.45. Request request = new Request(br);46. request.parse();47.48. os = socket.getOutputStream();49. pw = new PrintWriter(os); 50. Response response =new Response(pw, request.getFileroute();51. response.doresponse();52. catch (IOException e) 53. / TODO: handle exception54. e.printStackTrace()

12、;55. finally 56. /关闭资源57. try 58. if(pw!=null)59. pw.close();60. if(os!=null)61. os.close();62. if(br!=null)63. br.close();64. if(isr!=null)65. isr.close();66. if(is!=null)67. is.close();68. if(socket!=null)69. socket.close();70. catch (IOException e) 71. e.printStackTrace();72. 73. 74. 75. java vie

13、w plain copy1. package test;2.8.9. import server.Server;10.11. public class Test 12.13. public static void main(String args) 14. ExecutorService pool=null;15. ServerSocket serverSocket=null;16. try 17. serverSocket=new ServerSocket(80);18. / 创建一个可重用固定线程数的线程池 线程数为519. pool = Executors.newFixedThreadPool(5);20. Socket socket=null;21. while(true) 22. socket=serverSocket.accept();23.24. / new Thread(new Server(socket).start();25. pool.execute(new Server(socket);26. 27. catch (IOException e) 28. e.printStackTrace();29. finally 30. if(pool!=null)31. pool.shutdown();32. tr