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Run HttpFileServer.java HttpComponents Core Example
How to run the HttpFileServer.java HttpComponents Core Example? I have httpcomponents-core-4.4.6-bin.zip installed.
✍: FYIcenter.com
If you have httpcomponents-core-4.4.6-bin.zip installed, you can follow this tutorial to run the HttpFileServer.java HttpComponents Core Example:
1. Open the example program file HttpFileServer.java from \fyicenter\httpcomponents-core-4.4.6\examples\org\apache\http\examples\ folder:
/* * ==================================================================== * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * ... */ package org.apache.http.examples; import java.io.File; import java.io.IOException; import java.net.SocketTimeoutException; import java.net.URL; import java.net.URLDecoder; import java.nio.charset.Charset; import java.util.Locale; import java.util.concurrent.TimeUnit; import javax.net.ssl.SSLContext; import org.apache.http.ConnectionClosedException; import org.apache.http.ExceptionLogger; import org.apache.http.HttpConnection; import org.apache.http.HttpEntity; import org.apache.http.HttpEntityEnclosingRequest; import org.apache.http.HttpException; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.MethodNotSupportedException; import org.apache.http.config.SocketConfig; import org.apache.http.entity.ContentType; import org.apache.http.entity.FileEntity; import org.apache.http.entity.StringEntity; import org.apache.http.impl.bootstrap.HttpServer; import org.apache.http.impl.bootstrap.ServerBootstrap; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.HttpCoreContext; import org.apache.http.protocol.HttpRequestHandler; import org.apache.http.ssl.SSLContexts; import org.apache.http.util.EntityUtils; /** * Embedded HTTP/1.1 file server based on a classic (blocking) I/O model. */ public class HttpFileServer { public static void main(String[] args) throws Exception { if (args.length < 1) { System.err.println("Please specify document root directory"); System.exit(1); } // Document root directory String docRoot = args[0]; int port = 8080; if (args.length >= 2) { port = Integer.parseInt(args[1]); } SSLContext sslcontext = null; if (port == 8443) { // Initialize SSL context URL url = HttpFileServer.class.getResource("/my.keystore"); if (url == null) { System.out.println("Keystore not found"); System.exit(1); } sslcontext = SSLContexts.custom() .loadKeyMaterial(url, "secret".toCharArray(), "secret".toCharArray()) .build(); } SocketConfig socketConfig = SocketConfig.custom() .setSoTimeout(15000) .setTcpNoDelay(true) .build(); final HttpServer server = ServerBootstrap.bootstrap() .setListenerPort(port) .setServerInfo("Test/1.1") .setSocketConfig(socketConfig) .setSslContext(sslcontext) .setExceptionLogger(new StdErrorExceptionLogger()) .registerHandler("*", new HttpFileHandler(docRoot)) .create(); server.start(); server.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS); Runtime.getRuntime().addShutdownHook(new Thread() { @Override public void run() { server.shutdown(5, TimeUnit.SECONDS); } }); } static class StdErrorExceptionLogger implements ExceptionLogger { @Override public void log(final Exception ex) { if (ex instanceof SocketTimeoutException) { System.err.println("Connection timed out"); } else if (ex instanceof ConnectionClosedException) { System.err.println(ex.getMessage()); } else { ex.printStackTrace(); } } } static class HttpFileHandler implements HttpRequestHandler { private final String docRoot; public HttpFileHandler(final String docRoot) { super(); this.docRoot = docRoot; } public void handle( final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException { String method = request.getRequestLine().getMethod().toUpperCase(Locale.ROOT); if (!method.equals("GET") && !method.equals("HEAD") && !method.equals("POST")) { throw new MethodNotSupportedException(method + " method not supported"); } String target = request.getRequestLine().getUri(); if (request instanceof HttpEntityEnclosingRequest) { HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity(); byte[] entityContent = EntityUtils.toByteArray(entity); System.out.println("Incoming entity content (bytes): " + entityContent.length); } final File file = new File(this.docRoot, URLDecoder.decode(target, "UTF-8")); if (!file.exists()) { response.setStatusCode(HttpStatus.SC_NOT_FOUND); StringEntity entity = new StringEntity( "<html><body><h1>File" + file.getPath() + " not found</h1></body></html>", ContentType.create("text/html", "UTF-8")); response.setEntity(entity); System.out.println("File " + file.getPath() + " not found"); } else if (!file.canRead() || file.isDirectory()) { response.setStatusCode(HttpStatus.SC_FORBIDDEN); StringEntity entity = new StringEntity( "<html><body><h1>Access denied</h1></body></html>", ContentType.create("text/html", "UTF-8")); response.setEntity(entity); System.out.println("Cannot read file " + file.getPath()); } else { HttpCoreContext coreContext = HttpCoreContext.adapt(context); HttpConnection conn = coreContext.getConnection(HttpConnection.class); response.setStatusCode(HttpStatus.SC_OK); FileEntity body = new FileEntity(file, ContentType.create("text/html", (Charset) null)); response.setEntity(body); System.out.println(conn + ": serving file " + file.getPath()); } } } }
2. Compile and run the example with Java SE 8 JDK:
\fyicenter\httpcomponents-core-4.4.6\examples>\fyicenter\jdk-1.8.0\bin\javac -cp ..\lib\httpcore-4.4.6.jar org\apache\http\examples\HttpFileServer.java \fyicenter\httpcomponents-core-4.4.6\examples>\fyicenter\jdk-1.8.0\bin\java -cp .;..\lib\httpcore-4.4.6.jar org.apache.http.examples.HttpFileServer .
A HTTP server is running on port 8080 now, serving files from the \fyicenter\httpcomponents-core-4.4.6\examples folder.
Run a Web browser with http://localhost:8080, you will get an "Access denied" error, because you there is not file specified.
Run a Web browser with http://localhost:8080/org/apache/http/examples/PrintVersionInfo.java, you will get the content of PrintVersionInfo.java file.
⇒ FAQ for Apache HttpComponents JAR Library
⇐ Run PrintVersionInfo.java HttpComponents Core Example
2017-11-02, 1655🔥, 0💬
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