小賴的實戰記錄

我有需要做一個工作，就是收信，並取得信件內容做相對的事，

但我這次只研究，要怎麼最基本的收信功能，

以下這個網址是我主要參考的程式碼，我改成我需要的程式碼

https://www.javaworld.com.tw/jute/post/view?bid=7&id=60099&sty=3

package com.spider.net;

import javax.mail.*;
import javax.mail.internet.*;

import java.text.SimpleDateFormat;
import java.util.*;
 
public class SecurePOP3Client {
  public String host = "mail.xxxx.com.tw";
  public String provider = "pop3";
  public String userId = "root";
  public String password = "password";
	
  public Message[] getMessage(String host,String userId,String password) {
	  this.host = host;
	  this.userId = userId;
	  this.password = password;
	  return getMessage();
  }
  
  public Message[] getMessage(String userId,String password) {
	  this.userId = userId;
	  this.password = password;
	  return getMessage();
  }
	
  public Message[] getMessage() {
    Properties props = new Properties();
    Message[] messages = null;
 
    try {
       Session session = Session.getDefaultInstance(props, null);
       Store store = session.getStore(provider);
       store.connect(host, userId, password);
 
       Folder inbox = store.getFolder("INBOX");
       if (inbox == null) {
          System.out.println("No INBOX");
          messages = null;
          return messages;
       }
       inbox.open(Folder.READ_ONLY);   
       messages = inbox.getMessages();       
       inbox.close(false);
       store.close();
    }
    catch (Exception e) {
      e.printStackTrace();
    } 
   
    return messages;
  } 
}

但Mail需要有的好像是J2EE的功能，所以J2SE有些東西沒有需要另外include javax.mail-api-1.4.6.jar,mailapi-1.6.2.jar,pop3.jar

所以要到以下地方去下載這些jar檔

https://javaee.github.io/javamail/

https://jar-download.com/maven-repository-class-search.php?search_box=com.sun.mail.util.MailLogger

http://www.java2s.com/Code/Jar/p/Downloadpop3jar.htm