Java 接收邮件

package com.xu.email.send;
 

import java.util.Properties;
 

import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;

import javax.mail.internet.InternetAddress;
 

public class SendEmail {
            public static void main(String[] args) throws Exception {

                       Properties  props = new Properties();
  
                       props.put("mail.transport.protocol", "smtp");//指定邮件发送协议  只接受邮件是可以不要写的
                       props.put("mail.store.protocol", "imap");    //指定邮件接收协议
                       props.put("mail.smtp.class", "com.sun.mail.smtp.SMTPTransport");//指定支持SMTP协议的Transport具体类，允许由第三方提供
                       props.put("mail.imap.class", "com.sun.mail.imap.IMAPStore");    //指定支持IMAP协议的Store具体类，允许由第三方提供
                       //以上这4个可以全部写上
                       props.put("mail.smtp.host",  "pop.163.com");//指定采用SMTP协议的邮件发送服务器的IP地址或主机名
  
                      //注意你的服务器的地址
                      //网易一共有这三个地址   pop.163.com  imap.163.com  stmp.163.com

                      Session session =Session .getInstance(props);// 设置环境信息 
                      Store store = session.getStore("pop3");//指定接收邮件协议
 
                      store.connect("pop.163.com","***@163.com", "*********");
                      //            网易邮箱的服务器地址   账号  密码
  
                      //获得名为默认"inbox"的邮件夹当你自己有定义其他的邮件夹也可以写上去
                      Folder folder=store.getFolder("inbox");
  
                      //打开邮件夹
                      folder.open(Folder.READ_ONLY);//它是一个邮件文件夹类。Folder类有两个常见的属性，READ_ONLY表示只读，READ_WRITE表示其内容可读可写
  
                      //获得邮件夹中的邮件数目
                      System.out.println("你一共有:"+folder.getMessageCount()+" 封邮件");
                     //获得邮件夹中的未读邮件数目
  
                      System.out.println("你一共有:"+folder.getUnreadMessageCount()+" 未读邮件");
                      System.out.println("你一共删除了 "+folder.getDeletedMessageCount()+" 封邮件");

                      for(int i=1;i<=folder.getMessageCount();i++){

                      Message msg=folder.getMessage(i);
                      System.out.println("========================================");
                      //获得邮件的发送者、主题和正文
                      if(msg.getFrom()[0].toString().contains("<")){
                                      System.out.println("邮件来自:"+msg.getFrom()[0].toString().substring(msg.getFrom()[0].toString().lastIndexOf("<")+1, msg.getFrom()[0].toString().lastIndexOf(">")));
                      }else{
                                     System.out.println("邮件来自:"+msg.getFrom()[0]);
                      }
                      System.out.println("邮件主题:" + msg.getSubject());
                      System.out.println("发送日期:" + msg.getSentDate());
                      String type=msg.getContentType().toString().substring(0, msg.getContentType().toString().indexOf(";"));
                      System.out.println("邮件类型:"+type);
                      System.out.println("邮件内容:"+msg.getContentType().toString());//multipart  当文件类型为multipart/* 时不能正确显示
                      if(type.equals("text/html")){
                                     //请你根据文件的类型来更改文件的解析方式  text/html  multipart/alternative表示复合类型
                       }
                       InternetAddress[] address = (InternetAddress[]) msg.getFrom();
                       String from = address[0].getAddress();//这个是发邮件人的地址
                       if (from == null) {
                                   from = "";
                       }
                       String personal = address[0].getPersonal();//这个是发邮件的人的姓名
                       if (personal == null) {
                                  personal = "";
                       }
                       String fromaddr = personal + "<" + from + ">";
                       System.out.println("邮件作者："+fromaddr);
                       System.out.println("========================================\r\n");
              }
  

       }
}