package java_httpserver; import com.sun.net.httpserver.Headers; import com.sun.net.httpserver.HttpExchange; import com.sun.net.httpserver.HttpHandler; import com.sun.net.httpserver.HttpServer; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.net.InetSocketAddress; import java.util.logging.Level; import java.util.logging.Logger; /** * * @web http://java-buddy.blogspot.com/ */ public class Java_HttpServer { static final int responseCode_OK = 200; public static void main(String[] args) { try { HttpServer httpServer = HttpServer.create(new InetSocketAddress(8000), 0); httpServer.createContext("/", new MyHttpHandler()); httpServer.createContext("/image", new GetHttpHandler()); httpServer.setExecutor(null); httpServer.start(); } catch (IOException ex) { Logger.getLogger(Java_HttpServer.class.getName()).log(Level.SEVERE, null, ex); } } static class MyHttpHandler implements HttpHandler{ @Override public void handle(HttpExchange he) throws IOException { String response = "Hello from java-buddy"; he.sendResponseHeaders(responseCode_OK, response.length()); OutputStream outputStream = he.getResponseBody(); outputStream.write(response.getBytes()); outputStream.close(); } } static class GetHttpHandler implements HttpHandler{ @Override public void handle(HttpExchange he) throws IOException { Headers headers = he.getResponseHeaders(); headers.add("Content-Type", "image/png"); File file = new File ("duke.png"); byte[] bytes = new byte [(int)file.length()]; System.out.println(file.getAbsolutePath()); System.out.println("length:" + file.length()); FileInputStream fileInputStream = new FileInputStream(file); BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream); bufferedInputStream.read(bytes, 0, bytes.length); he.sendResponseHeaders(responseCode_OK, file.length()); OutputStream outputStream = he.getResponseBody(); outputStream.write(bytes, 0, bytes.length); outputStream.close(); } } }
Tuesday, January 27, 2015
Java HttpServer to download image
The example implement HttpServer to download image.
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