【Java】使用JavaMail发送邮件以及开启ssl的使用总结
常见错误：
1.关于使用Java Mail进行邮件发送，抛出Could not connect to SMTP host: [email protected], port: 25的异常
2.使用 JavaMailSenderImpl SSL 465 发送邮件
3.java.net.SocketTimeoutException: Read timed out的解决办法
4.如何获取qq邮箱STMP授权码
加密与非加密配置方式
1.简单邮件非ssl使用25端口的STMP邮件
public class MailMessageSchedule {
public void mailMessage()throws Exception {
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
System.setProperty("java.net.preferIPv4Stack", "true");
//设定mail server
senderImpl.setHost("smtp.qq.com");
MimeMessage mailMessage = senderImpl.createMimeMessage();
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true,"utf-8"); messageHelper.addAttachment(fileName,file);
//收件人
messageHelper.setTo([email protected]);
//发件人
messageHelper.setFrom("[email protected]");
//设置邮件标题
messageHelper.setSubject(“标题”);
//设置邮件内容，true表示开启HTML文本格式
messageHelper.setText(content,true);
//这是发件人邮箱信息，username表示用户邮箱，password表示对应邮件授权码
senderImpl.setUsername("[email protected]") ;
senderImpl.setPassword("授权码") ;
Properties prop = new Properties() ;
prop.put("mail.smtp.auth", "true") ; // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确
prop.put("mail.smtp.timeout", "25000") ;
senderImpl.setJavaMailProperties(prop);
//发送邮件
senderImpl.send(mailMessage);
System.out.println("邮件发送成功..");
}
}
2.加密邮件开启ssl使用465端口：
public class MailMessageSchedule {
public void mailMessage()throws Exception {
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
System.setProperty("java.net.preferIPv4Stack", "true");
//设定mail server
senderImpl.setHost("smtp.qq.com");
MimeMessage mailMessage = senderImpl.createMimeMessage();
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true,"utf-8"); messageHelper.addAttachment(fileName,file);
//收件人
messageHelper.setTo([email protected]);
//发件人
messageHelper.setFrom("[email protected]");
//设置邮件标题
messageHelper.setSubject(“标题”);
//设置邮件内容，true表示开启HTML文本格式
messageHelper.setText(content,true);
//这是发件人邮箱信息，username表示用户邮箱，password表示对应邮件授权码
senderImpl.setUsername("[email protected]") ;
senderImpl.setPassword("授权码") ;
//开启ssl
Properties properties = new Properties();
properties.setProperty("mail.smtp.auth", "true");//开启认证
properties.setProperty("mail.debug", "true");//启用调试
properties.setProperty("mail.smtp.timeout", "200000");//设置链接超时
properties.setProperty("mail.smtp.port", Integer.toString(25));//设置端口
properties.setProperty("mail.smtp.socketFactory.port", Integer.toString(465));//设置ssl端口
properties.setProperty("mail.smtp.socketFactory.fallback", "false");
properties.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
senderImpl.setJavaMailProperties(properties);
//发送邮件
senderImpl.send(mailMessage);
System.out.println("邮件发送成功..");
}
}
代码示例
1.带附件的简单邮件：
package com.thon.task;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import javax.mail.internet.MimeMessage;
import java.io.File;
import java.util.Properties;
/**
* @description 带附件邮件发送
**/
public class FileMail {
public static void main(String[] args) throws Exception{
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
//设定mail server
senderImpl.setHost("smtp.qq.com");
//建立邮件消息,发送简单邮件和html邮件的区别
MimeMessage mailMessage = senderImpl.createMimeMessage();
//注意这里的boolean,等于真的时候才能嵌套图片，在构建MimeMessageHelper时候，所给定的值是true表示启用，
//multipart模式 为true时发送附件 可以设置html格式
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true,"utf-8");
//设置收件人，寄件人
messageHelper.setTo("[email protected]");
messageHelper.setFrom("[email protected]");
messageHelper.setSubject("测试邮件中上传附件！");
//true 表示启动HTML格式的邮件
messageHelper.setText("这是内容",true);
FileSystemResource file = new FileSystemResource(new File("E:\\新建文件夹 (2)\\ysg.gif"));
//这里的方法调用和插入图片是不同的。
messageHelper.addAttachment("药水哥.gif",file);
senderImpl.setUsername("[email protected]") ; // 根据自己的情况,设置username
senderImpl.setPassword("授权码") ; // 根据自己的情况, 设置password
Properties prop = new Properties() ;
prop.put("mail.smtp.auth", "true") ; // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确
prop.put("mail.smtp.timeout", "25000") ;
senderImpl.setJavaMailProperties(prop);
//发送邮件
senderImpl.send(mailMessage);
System.out.println("邮件发送成功..");
}
}2.支持HTML样式的文本邮件
package com.thon.task;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import javax.mail.internet.MimeMessage;
import java.util.Properties;
/**
* @description 文本邮件发送
**/
public class HtmlMail {
public static void main(String[] args) throws Exception{
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
//设定mail server
senderImpl.setHost("smtp.qq.com");
//建立邮件消息,发送简单邮件和html邮件的区别
MimeMessage mailMessage = senderImpl.createMimeMessage();
//注意这里的boolean,等于真的时候才能嵌套图片，在构建MimeMessageHelper时候，所给定的值是true表示启用，
//multipart模式 为true时发送附件 可以设置html格式
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage);
//设置收件人，寄件人
messageHelper.setTo("[email protected]");
messageHelper.setFrom("[email protected]");
messageHelper.setSubject("测试邮件中上传附件112!！"); //邮件标题
//true 表示启动HTML格式的邮件
messageHelper.setText("你好：附件中有学习资料！
",true);
senderImpl.setUsername("[email protected]") ; // 根据自己的情况,设置username
senderImpl.setPassword("授权码") ; // 根据自己的情况, 设置password
Properties prop = new Properties() ;
prop.put("mail.smtp.auth", "true") ; // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确
prop.put("mail.smtp.timeout", "25000") ;
senderImpl.setJavaMailProperties(prop);
//发送邮件
senderImpl.send(mailMessage);
System.out.println("邮件发送成功..");
}
}
3.带图片的简单邮件
package com.thon.task;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import javax.mail.internet.MimeMessage;
import java.io.File;
import java.util.Properties;
/**
* @description 内嵌图片邮件发送
**/
public class ImageMail {
public static void main(String[] args) throws Exception{
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
//设定mail server
senderImpl.setHost("smtp.qq.com");
//建立邮件消息,发送简单邮件和html邮件的区别
MimeMessage mailMessage = senderImpl.createMimeMessage();
//注意这里的boolean,等于真的时候才能嵌套图片，在构建MimeMessageHelper时候，所给定的值是true表示启用，
//multipart模式 为true时发送附件 可以设置html格式
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true,"utf-8");
//设置收件人，寄件人
messageHelper.setTo("[email protected]");
messageHelper.setFrom("[email protected]");
messageHelper.setSubject("测试图片邮件！");
//true 表示启动HTML格式的邮件
messageHelper.setText("hello!!spring image html mail
" +
"![](\"cid:aaa\"/)
",true);
FileSystemResource file = new FileSystemResource(new File("/Users/thon/Pictures/漂亮/p2.jpg"));
//插入图片
messageHelper.addInline("aaa",file);
senderImpl.setUsername("[email protected]") ; // 根据自己的情况,设置username
senderImpl.setPassword("授权码") ; // 根据自己的情况, 设置password
Properties prop = new Properties() ;
prop.put("mail.smtp.auth", "true") ; // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确
prop.put("mail.smtp.timeout", "25000") ;
senderImpl.setJavaMailProperties(prop);
//发送邮件
senderImpl.send(mailMessage);
System.out.println("邮件发送成功..");
}
}
4.使用ssl加密发送带附件的html邮件：
package com.thon.schedule;
/**
* Created by hucong on 2019-05-30.
* 招标邮件
*/
import com.thon.commons.utils.StringUtils;
import com.thon.entity.system.Attachment;
import com.thon.model.BidMail;
import com.thon.model.BidPost;
import com.thon.model.BidPostSign;
import com.thon.service.system.AttachmentService;
import com.thon.service.utils.AttachmentUtil;
import com.thon.service.wzgl.BidMailService;
import com.thon.service.wzgl.BidPostService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Component;
import javax.mail.internet.MimeMessage;
import java.io.*;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.*;
@Component
public class MailMessageSchedule {
@Autowired
private BidPostService bidPostService;
@Autowired
private BidMailService bidMailService;
@Autowired
private AttachmentService attachmentService;
public void mailMessage()throws Exception {
JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
System.setProperty("java.net.preferIPv4Stack", "true");
//设定mail server
senderImpl.setHost("smtp.qq.com");
MimeMessage mailMessage = senderImpl.createMimeMessage();
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true,"utf-8");
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date currentTime = df.parse(df.format(new Date()));
//获取已过截止日期招标记录
List rbidPosts = bidPostService.selectByDate(currentTime);
//获取已经发送过的招标信息
List bidMails =bidMailService.selectByDate(currentTime);
List bidPosts = new ArrayList<>(rbidPosts);
for (BidPost p : rbidPosts){
for (BidMail m : bidMails){
if (m.getBidPostId().equals(p.getId())){
bidPosts.remove(p);
}
}
}
//发送邮件
for (BidPost bidPost:bidPosts){
String sendException ="success";
String title = "询价招标通知函";
String content = new String();
String table = new String();
for (BidPostSign s : bidPost.getOffers()){
//供应商信息
table += "" +
""+s.getSupplierName()+" " +
""+s.getSupplierCode()+" " +
""+s.getLinkman()+" " +
""+s.getPhone()+" " +
""+(s.getSubmitDate()==null?"未填写日期":df.format(s.getSubmitDate()))+" " +
""+(s.getApplyDate()==null?"未填写日期":df.format(s.getApplyDate()))+" " +
" " ;
//供应商投标附件
try
{
if (!StringUtils.isNotBlank(s.getSubmitFiles())){
break;
}
Attachment attachment = attachmentService.getAttachment(Integer.valueOf(s.getSubmitFiles()));
if (attachment == null) {
attachment = new Attachment();
}
AttachmentUtil.read(attachment);
byte[] bytes = attachment.getBytes();
String fileName = URLEncoder.encode(attachment.getFileName(), "UTF-8");
String path = "/data/.material/tmp/"+"【投标文件】"+"【"+s.getSupplierName()+"】"+fileName;
// 根据绝对路径初始化文件
File localFile = new File(path);
//判断文件父目录是否存在
if (!localFile.getParentFile().exists()){
localFile.getParentFile().mkdir();
}
if (!localFile.exists())
{
localFile.createNewFile();
}
// 输出流
OutputStream os = new FileOutputStream(localFile);
os.write(bytes);
os.close();
messageHelper.addAttachment("【投标文件】"+"【"+s.getSupplierName()+"】"+fileName,localFile);
}
catch (Exception e)
{
e.printStackTrace();
bidMailService.save(bidPost,"file_read_error_submit:"+s.getId());
}
//供应商申请报价附件
try
{
if (!StringUtils.isNotBlank(s.getApplyFiles())){
break;
}
Attachment attachment = attachmentService.getAttachment(Integer.valueOf(s.getApplyFiles()));
if (attachment == null) {
attachment = new Attachment();
}
AttachmentUtil.read(attachment);
byte[] bytes = attachment.getBytes();
String fileName = URLEncoder.encode(attachment.getFileName(), "UTF-8");
String path = "/data/.material/tmp/"+"【申请报价】"+"【"+s.getSupplierName()+"】"+fileName;
// 根据绝对路径初始化文件
File localFile = new File(path);
if (!localFile.exists())
{
localFile.createNewFile();
}
// 输出流
OutputStream os = new FileOutputStream(localFile);
os.write(bytes);
os.close();
messageHelper.addAttachment("【申请报价】"+"【"+s.getSupplierName()+"】"+fileName,localFile);
}
catch (Exception e)
{
e.printStackTrace();
bidMailService.save(bidPost,"file_read_error_apply:"+s.getId());
}
}
//设置收件人，寄件人
if (bidPost.getEmails()!=null){
//多邮箱用','分割
String[] emails = bidPost.getEmails().split(",");
messageHelper.setTo(emails);
}
else {
bidMailService.save(bidPost,"email_error:"+bidPost.getEmails());
return;
}
messageHelper.setFrom("[email protected]");
messageHelper.setSubject(title);
//true 表示启动HTML格式的邮件
content="采购信息发布标题："+bidPost.getTitle()+"
" +
"采购分类："+bidPost.getPriceType()+"
" +
"询价编号:"+bidPost.getCode()+"
" +
"申请单位:"+bidPost.getOfficeName()+"
" +
"发布者:"+bidPost.getAuthor()+"
" +
"发布日期:"+df.format(bidPost.getCreatedDate())+"
" +
"截止日期:"+df.format(bidPost.getDeadlineDate())+"
" +
"
" +
"" +
"\n" +
"" +
"" +
"供应商名称 " +
"组织机构 " +
"联系人 " +
"手机号 " +
"报价时间 " +
"申请报价时间 " +
" " +
table +
"" +
"
" +
"
" +
"附件：
" +
"
" +
"" +
"
";
messageHelper.setText(content,true);
senderImpl.setUsername("[email protected]") ;
senderImpl.setPassword("授权码") ;
//开启ssl
Properties properties = new Properties();
properties.setProperty("mail.smtp.auth", "true");//开启认证
properties.setProperty("mail.debug", "true");//启用调试
properties.setProperty("mail.smtp.timeout", "200000");//设置链接超时
properties.setProperty("mail.smtp.port", Integer.toString(25));//设置端口
properties.setProperty("mail.smtp.socketFactory.port", Integer.toString(465));//设置ssl端口
properties.setProperty("mail.smtp.socketFactory.fallback", "false");
properties.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
senderImpl.setJavaMailProperties(properties);
senderImpl.send(mailMessage);
bidMailService.save(bidPost,sendException);
System.out.println("邮件发送成功..");
System.out.println("定时器启动！");
}
}
}