HttpServer, Request, Response
Java代码

package com.iteye.wely.server;  import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;  /** * Created by shenhongxi on 16/3/21. */
public class HttpServer {  public static final String WEB_ROOT = System.getProperty("user.dir") + File.separator + "ixhong-tomcat-web/src/main/webapp";  private static final String SHUTDOWN_COMMAND = "SHUTDOWN";  private boolean shutdown = false;  public static void main(String[] args) {  HttpServer server = new HttpServer();  System.out.println(WEB_ROOT);  server.await();  }  private void await() {  ServerSocket serverSocket = null;  int port = 8080;  try {  serverSocket = new ServerSocket(port, 1, InetAddress.getByName("127.0.0.1"));  System.out.println("Server started!");  } catch (IOException e) {  e.printStackTrace();  System.exit(1);  }  while (!shutdown) {  Socket socket = null;  InputStream input = null;  OutputStream output = null;  try {  socket = serverSocket.accept();  input = socket.getInputStream();  output = socket.getOutputStream();  Request request = new Request(input);  request.parse();  Response response = new Response(output);  response.setRequest(request);  response.sendStaticResource();  socket.close();  shutdown = request.getUri().equals(SHUTDOWN_COMMAND);  } catch (Exception e) {  e.printStackTrace();  continue;  }  }  }
}
Java代码  收藏代码
package com.iteye.wely.server;  import java.io.IOException;
import java.io.InputStream;  /** * Created by shenhongxi on 16/3/21. */
public class Request {  private InputStream input;  private String uri; // 性能考虑，用byte[]  public Request(InputStream input) {  this.input = input;  }  public void parse() {  StringBuffer request = new StringBuffer(2048);  int i;  byte[] buffer = new byte[2048];  try {  i = input.read(buffer);  } catch (IOException e) {  e.printStackTrace();  i = -1;  }  for (int j = 0; j < i; j++) {  request.append((char) buffer[j]);  }  System.out.println(request.toString());  uri = parseUri(request.toString());  }  private String parseUri(String requestStr) {  // GET /index.html HTTP/1.1  // Accept: text/plain; text/html  // ...  int index1 = requestStr.indexOf(' ');  int index2;  if (index1 != -1) {  index2 = requestStr.indexOf(' ', index1 + 1);  if (index2 > index1) {  return requestStr.substring(index1 + 1, index2);  }  }  return null;  }  public String getUri() {  return uri;  }
}
Java代码  收藏代码
package com.iteye.wely.server;  import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;  /** * Created by shenhongxi on 16/3/21. */
public class Response {  private static final int BUFFER_SIZE = 1024;  Request request;  OutputStream output;  public void sendStaticResource() throws IOException {  byte[] bytes = new byte[BUFFER_SIZE];  FileInputStream fis = null;  try {  File file = new File(HttpServer.WEB_ROOT, request.getUri());  if (file.exists()) {  fis = new FileInputStream(file);  int ch = fis.read(bytes, 0, BUFFER_SIZE);  while (ch != -1) {  output.write(bytes, 0, ch);  ch = fis.read(bytes, 0, BUFFER_SIZE);  }  } else {  String errorMsg = "HTTP/1.1 404 File Not Found\r\n" +  "Content-Type: text/html\r\n" +  "Content-Length: 23\r\n" +  "\r\n" +  "<h1>File Not Found</h1>";  output.write(errorMsg.getBytes());  }  } catch (Exception e) {  e.printStackTrace();  } finally {  if (fis != null) {  fis.close();  }  }  }  public Response(OutputStream output) {  this.output = output;  }  public void setRequest(Request request) {  this.request = request;  }
}

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