| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.net.examples.nntp; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.net.SocketException; |
| |
| import org.apache.commons.net.PrintCommandListener; |
| import org.apache.commons.net.nntp.NNTPClient; |
| import org.apache.commons.net.nntp.NewsgroupInfo; |
| |
| /** |
| * Sample program demonstrating the use of article header and body retrieval |
| */ |
| public class ArticleReader { |
| |
| public static void main(String[] args) throws SocketException, IOException { |
| |
| if (args.length != 2 && args.length != 3 && args.length != 5) { |
| System.out.println("Usage: MessageThreading <hostname> <groupname> [<article specifier> [<user> <password>]]"); |
| return; |
| } |
| |
| String hostname = args[0]; |
| String newsgroup = args[1]; |
| // Article specifier can be numeric or Id in form <m.n.o.x@host> |
| String articleSpec = args.length >= 3 ? args[2] : null; |
| |
| NNTPClient client = new NNTPClient(); |
| client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out), true)); |
| client.connect(hostname); |
| |
| if (args.length == 5) { // Optional auth |
| String user = args[3]; |
| String password = args[4]; |
| if(!client.authenticate(user, password)) { |
| System.out.println("Authentication failed for user " + user + "!"); |
| System.exit(1); |
| } |
| } |
| |
| NewsgroupInfo group = new NewsgroupInfo(); |
| client.selectNewsgroup(newsgroup, group); |
| |
| BufferedReader brHdr; |
| String line; |
| if (articleSpec != null) { |
| brHdr = (BufferedReader) client.retrieveArticleHeader(articleSpec); |
| } else { |
| long articleNum = group.getLastArticleLong(); |
| brHdr = client.retrieveArticleHeader(articleNum); |
| } |
| if (brHdr != null) { |
| while((line=brHdr.readLine()) != null) { |
| System.out.println(line); |
| } |
| brHdr.close(); |
| } |
| BufferedReader brBody; |
| if (articleSpec != null) { |
| brBody = (BufferedReader) client.retrieveArticleBody(articleSpec); |
| } else { |
| long articleNum = group.getLastArticleLong(); |
| brBody = client.retrieveArticleBody(articleNum); |
| } |
| if (brBody != null) { |
| while((line=brBody.readLine()) != null) { |
| System.out.println(line); |
| } |
| brBody.close(); |
| } |
| } |
| |
| } |