Java实现 邮箱发送，163邮箱在发送过程中出现间接性发送失败问题；
错误信息：
邮件发送失败！com.sun.mail.smtp.SMTPSendFailedException: 554 DT:SPM 163 smtp5,D9GowADn0DpklIBclT7UBw--.45S2 1551930470,please see http://mail.163.com/help/help_spam_16.htm?ip=61.178.126.61&hostid=smtp5&time=1551930470；
已尝试网上的解决办法（在发送邮件之前向自己抄送一份），邮箱设置中也设置了白名单（无效果）；
下面是实现代码：
package com.dfec.obp.util;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
public class MailUtil {
private MimeMessage mimeMsg; // MIME邮件对象
private Session session; // 邮件会话对象
private Properties props; // 系统属性
private boolean needAuth = false; // smtp是否需要认证
// smtp认证用户名和密码
private String username;
private String password;
private Multipart mp; // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象
/**
* Constructor
*
* @param smtp
* 邮件发送服务器
*/
public MailUtil(String smtp){
setSmtpHost(smtp);
createMimeMessage();
}
/**
* 设置邮件发送服务器
*
* @param hostName
* String
*/
public void setSmtpHost(String hostName) {
// System.out.println("设置系统属性：mail.smtp.host = "+hostName);
if(props == null)
props = System.getProperties(); // 获得系统属性对象
props.setProperty("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.smtp.socketFactory.fallback", "false");
props.put("mail.smtp.host", hostName); // 设置SMTP主机
props.setProperty("mail.smtp.port", "465");//qq设置465///25
}
/**
* 创建MIME邮件对象
*
* @return
*/
public boolean createMimeMessage()
{
try {
// System.out.println("准备获取邮件会话对象！");
session = Session.getDefaultInstance(props, null); // 获得邮件会话对象
session.setDebug(true);
}
catch(Exception e){
System.err.println("获取邮件会话对象时发生错误！" + e);
return false;
}
// System.out.println("准备创建MIME邮件对象！");
try {
mimeMsg = new MimeMessage(session); // 创建MIME邮件对象
mp = new MimeMultipart();
return true;
} catch(Exception e){
System.err.println("创建MIME邮件对象失败！" + e);
return false;
}
}
/**
* 设置SMTP是否需要验证
*
* @param need
*/
public void setNeedAuth(boolean need) {
// System.out.println("设置smtp身份认证：mail.smtp.auth = "+need);
if(props == null) props = System.getProperties();
if(need){
props.put("mail.smtp.auth","true");
}else{
props.put("mail.smtp.auth","false");
}
}
/**
* 设置用户名和密码
*
* @param name
* @param pass
*/
public void setNamePass(String name,String pass) {
username = name;
password = pass;
}
/**
* 设置邮件主题
*
* @param mailSubject
* @return
*/
public boolean setSubject(String mailSubject) {
// System.out.println("设置邮件主题！");
try{
mimeMsg.setSubject(mailSubject);
return true;
}
catch(Exception e) {
System.err.println("设置邮件主题发生错误！");
return false;
}
}
/**
* 设置邮件正文
*
* @param mailBody
* String
*/
public boolean setBody(String mailBody) {
try{
BodyPart bp = new MimeBodyPart();
bp.setContent(""+mailBody,"text/html;charset=GBK");
mp.addBodyPart(bp);
return true;
} catch(Exception e){
System.err.println("设置邮件正文时发生错误！" + e);
return false;
}
}
/**
* 添加附件
*
* @param filename
* String
*/
public boolean addFileAffix(String filename) {
// System.out.println("增加邮件附件："+filename);
try{
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
bp.setFileName(MimeUtility.encodeText(fileds.getName()));
mp.addBodyPart(bp);
return true;
} catch(Exception e){
System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
return false;
}
}
/**
* 设置发信人
*
* @param from
* String
*/
public boolean setFrom(String from) {
// System.out.println("设置发信人！");
try{
mimeMsg.setFrom(new InternetAddress(from)); // 设置发信人
return true;
} catch(Exception e) {
return false;
}
}
/**
* 设置收信人
*
* 设置属性
* private Properties p; // p是属性集合类，用来设置邮件的一些属性比如timeout等
* p.put("userName","xxx@163.com"); //这里填上你的邮箱（发送方）
* 构件MimeMessage 对象，并设置在发送给收信人之前给自己（发送方）抄送一份
* MimeMessage msg = mailSender.createMimeMessage();
* msg.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(p.getProperty("userName")));
*
* @param to
* String
*/
public boolean setTo(String[] to,String from){
if(to == null)return false;
try{
mimeMsg.addRecipients(Message.RecipientType.CC,InternetAddress.parse(from));//给自己抄送一份
int mailSize = to.length;
for(int i = 0; i < mailSize; i++){
InternetAddress toStr = new InternetAddress(to[i]);
mimeMsg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(toStr.toString()));
}
return true;
} catch(Exception e) {
return false;
}
}
/**
* 发送邮件
*/
public boolean sendOut()
{
try{
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
// System.out.println("正在发送邮件....");
Session mailSession = Session.getInstance(props,null);
Transport transport = mailSession.getTransport("smtp");
transport.connect((String)props.get("mail.smtp.host"),username,password);
transport.sendMessage(mimeMsg, mimeMsg.getAllRecipients());
//transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.TO));
System.out.println("发送邮件成功！");
transport.close();
return true;
} catch(Exception e) {
System.err.println("邮件发送失败！" + e);
return false;
}
}
/**
* 调用sendOut方法完成邮件发送
*
* @param smtp
* @param from
* @param to
* @param subject
* @param content
* @param username
* @param password
* @return boolean
*/
public static boolean send(String smtp,String from,String[] to,String subject,String content,String username,String password) {
MailUtil theMail = new MailUtil(smtp);
theMail.setNeedAuth(true); // 需要验证
if(!theMail.setSubject(subject)) return false;
if(!theMail.setBody(content)) return false;
if(!theMail.setTo(to,from)) return false;
if(!theMail.setFrom(from)) return false;
theMail.setNamePass(username,password);
if(!theMail.sendOut()) return false;
return true;
}
/**
* 调用sendOut方法完成邮件发送,带附件
*
* @param smtp
* @param from
* @param to
* @param subject
* @param content
* @param username
* @param password
* @param filename
* 附件路径
* @return
*/
public static boolean send(String smtp,String from,String[] to,String subject,String content,String username,String password,String filename) {
MailUtil theMail = new MailUtil(smtp);
theMail.setNeedAuth(true); // 需要验证
if(!theMail.setSubject(subject)) return false;
if(!theMail.setBody(content)) return false;
if(!theMail.addFileAffix(filename)) return false;
if(!theMail.setTo(to,from)) return false;
if(!theMail.setFrom(from)) return false;
theMail.setNamePass(username,password);
if(!theMail.sendOut()) return false;
return true;
}
}
