| /* |
| * 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 examples; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.Reader; |
| import org.apache.commons.net.pop3.POP3Client; |
| import org.apache.commons.net.pop3.POP3MessageInfo; |
| |
| /*** |
| * This is an example program demonstrating how to use the POP3Client class. |
| * This program connects to a POP3 server and retrieves the message |
| * headers of all the messages, printing the From: and Subject: header |
| * entries for each message. |
| * <p> |
| * Usage: messages <pop3 server hostname> <username> <password> |
| * <p> |
| ***/ |
| public final class messages |
| { |
| |
| public static final void printMessageInfo(BufferedReader reader, int id) |
| throws IOException |
| { |
| String line, lower, from, subject; |
| |
| from = ""; |
| subject = ""; |
| |
| while ((line = reader.readLine()) != null) |
| { |
| lower = line.toLowerCase(); |
| if (lower.startsWith("from: ")) |
| from = line.substring(6).trim(); |
| else if (lower.startsWith("subject: ")) |
| subject = line.substring(9).trim(); |
| } |
| |
| System.out.println(Integer.toString(id) + " From: " + from + |
| " Subject: " + subject); |
| } |
| |
| public static final void main(String[] args) |
| { |
| int message; |
| String server, username, password; |
| POP3Client pop3; |
| Reader reader; |
| POP3MessageInfo[] messages; |
| |
| if (args.length < 3) |
| { |
| System.err.println( |
| "Usage: messages <pop3 server hostname> <username> <password>"); |
| System.exit(1); |
| } |
| |
| server = args[0]; |
| username = args[1]; |
| password = args[2]; |
| |
| pop3 = new POP3Client(); |
| // We want to timeout if a response takes longer than 60 seconds |
| pop3.setDefaultTimeout(60000); |
| |
| try |
| { |
| pop3.connect(server); |
| } |
| catch (IOException e) |
| { |
| System.err.println("Could not connect to server."); |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| |
| try |
| { |
| if (!pop3.login(username, password)) |
| { |
| System.err.println("Could not login to server. Check password."); |
| pop3.disconnect(); |
| System.exit(1); |
| } |
| |
| messages = pop3.listMessages(); |
| |
| if (messages == null) |
| { |
| System.err.println("Could not retrieve message list."); |
| pop3.disconnect(); |
| System.exit(1); |
| } |
| else if (messages.length == 0) |
| { |
| System.out.println("No messages"); |
| pop3.logout(); |
| pop3.disconnect(); |
| System.exit(1); |
| } |
| |
| for (message = 0; message < messages.length; message++) |
| { |
| reader = pop3.retrieveMessageTop(messages[message].number, 0); |
| |
| if (reader == null) |
| { |
| System.err.println("Could not retrieve message header."); |
| pop3.disconnect(); |
| System.exit(1); |
| } |
| |
| printMessageInfo(new BufferedReader(reader), messages[message].number); |
| } |
| |
| pop3.logout(); |
| pop3.disconnect(); |
| } |
| catch (IOException e) |
| { |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| } |
| } |
| |