JDK6提供了一个简单的Http Server API,据此我们可以构建自己的嵌入式Http Server,它支持Http和Https协议,提供了HTTP1.1的部分实现,没有被实现的那部分可以通过扩展已有的Http Server API来实现,程序员必须自己实现HttpHandler接口,HttpServer会调用HttpHandler实现类的回调方法来处理客户端请求,在这里,我们把一个Http请求和它的响应称为一个交换,包装成HttpExchange类,HttpServer负责将HttpExchange传给HttpHandler实现类的回调方法
我想开发一个j2se的小程序,它能接受网页传来的参数,并对传来参数做些处理。我希望这个小程序即可能接受网页传过来的参数,也能接受OutputStream流传来参数,JDK6新特性能够实现。
- package com.tdt.server.httpserver;
- import java.io.BufferedReader;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.io.OutputStream;
- import java.net.InetSocketAddress;
- import com.sun.net.httpserver.HttpExchange;
- import com.sun.net.httpserver.HttpHandler;
- import com.sun.net.httpserver.HttpServer;
- import com.sun.net.httpserver.spi.HttpServerProvider;
- /**
- * @project SimpleHttpServer
- * @author sunnylocus
- * @vresion 1.0 2009-9-2
- * @description 自定义的http服务器
- */
- public class MyHttpServer {
- //启动服务,监听来自客户端的请求
- public static void httpserverService() throws IOException {
- HttpServerProvider provider = HttpServerProvider.provider();
- HttpServer httpserver =provider.createHttpServer(new InetSocketAddress(6666), 100);//监听端口6666,能同时接 受100个请求
- httpserver.createContext("/myApp", new MyHttpHandler());
- httpserver.setExecutor(null);
- httpserver.start();
- System.out.println("server started");
- }
- //Http请求处理类
- static class MyHttpHandler implements HttpHandler {
- public void handle(HttpExchange httpExchange) throws IOException {
- String responseMsg = "ok"; //响应信息
- InputStream in = httpExchange.getRequestBody(); //获得输入流
- BufferedReader reader = new BufferedReader(new InputStreamReader(in));
- String temp = null;
- while((temp = reader.readLine()) != null) {
- System.out.println("client request:"+temp);
- }
- httpExchange.sendResponseHeaders(200, responseMsg.length()); //设置响应头属性及响应信息的长度
- OutputStream out = httpExchange.getResponseBody(); //获得输出流
- out.write(responseMsg.getBytes());
- out.flush();
- httpExchange.close();
- }
- }
- public static void main(String[] args) throws IOException {
- httpserverService();
- }
- }
二、测试类
- package com.tdt.server.test;
- import java.io.BufferedReader;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.io.OutputStream;
- import java.net.HttpURLConnection;
- import java.net.URL;
- import java.util.concurrent.ExecutorService;
- import java.util.concurrent.Executors;
- /**
- * @project SimpleHttpServer
- * @author sunnylocus
- * @vresion 1.0 2009-9-2
- * @description 测试类
- */
- public class Test {
- public static void main(String[] args) {
- ExecutorService exec = Executors.newCachedThreadPool();
- // 测试并发对MyHttpServer的影响
- for (int i = 0; i < 20; i++) {
- Runnable run = new Runnable() {
- public void run() {
- try {
- startWork();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- };
- exec.execute(run);
- }
- exec.shutdown();// 关闭线程池
- }
- public static void startWork() throws IOException {
- URL url = new URL("http://127.0.0.1:6666/myApp");
- HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
- urlConn.setDoOutput(true);
- urlConn.setDoInput(true);
- urlConn.setRequestMethod("POST");
- // 测试内容包
- String teststr = "this is a test message";
- OutputStream out = urlConn.getOutputStream();
- out.write(teststr.getBytes());
- out.flush();
- while (urlConn.getContentLength() != -1) {
- if (urlConn.getResponseCode() == 200) {
- InputStream in = urlConn.getInputStream();
- BufferedReader reader = new BufferedReader(new InputStreamReader(in));
- String temp = "";
- while ((temp = reader.readLine()) != null) {
- System.err.println("server response:" + temp);// 打印收到的信息
- }
- reader.close();
- in.close();
- urlConn.disconnect();
- }
- }
- }
- }