MailServiceImpl.java
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package com.framework.mail;
import java.io.File;
import java.util.List;
import java.util.Properties;
import javax.mail.internet.MimeMessage;
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.task.TaskExecutor;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
public class MailServiceImpl implements MailService {
private JavaMailSender mailSender; // 注入
private TaskExecutor taskExecutor;
// 判断同步或者异步发送
@Override
public void sendMail(Email email) throws Exception {
JavaMailSenderImpl senderImpl = (JavaMailSenderImpl) mailSender;
Properties mailProperties = senderImpl.getJavaMailProperties();
// 获取接收人信息
String to = email.getTo();
if (StringUtils.isEmpty(to)) {
String sendTo = mailProperties.getProperty("mail.sendTo");
email.setTo(sendTo);
}
if (email.getToArray().length > 500) { // 收件地址大于5时,异步发送
sendMailByAsynchronousMode(email);
} else {
try {
sendMailBySynchronizationMode(email);
} catch (Exception e) {
throw new Exception(e);
}
}
}
// 实现异步只需把同步发送放到Concurrent里面执行
@Override
public void sendMailByAsynchronousMode(final Email email) throws Exception {
taskExecutor.execute(new Runnable() {
public void run() {
try {
sendMailBySynchronizationMode(email);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
// 同步发送邮件
@Override
public void sendMailBySynchronizationMode(Email email) throws Exception {
try {
JavaMailSenderImpl senderImpl = (JavaMailSenderImpl) mailSender;
MimeMessage mime = mailSender.createMimeMessage();
MimeMessageHelper helper = null;
if (email.getAttachList() != null && email.getAttachList().size() > 0) {
helper = new MimeMessageHelper(mime, true, "utf-8");
} else {
helper = new MimeMessageHelper(mime, false, "utf-8");
}
helper.setFrom(StringUtils.isEmpty(email.getFrom()) ? senderImpl.getUsername() : email.getFrom()); // 发件人
helper.setTo(email.getToArray()); // 收件人
if (email.getCc() != null && email.getCc().trim().length() > 0) {
String[] cc = email.getCc().split(";");
helper.setCc(cc); // 抄送
}
if (email.getBccMail() != null) {
helper.setBcc(email.getBccMail());
}
helper.setSubject(email.getSubject()); // 邮件主题
if (null != email.getContent()) {
helper.setText(email.getContent(), true); // true表示设定html格式
}
List<String> attachList = email.getAttachList();
if (null != attachList && 0 < attachList.size()) {
for (String attach : attachList) {
FileSystemResource file = new FileSystemResource(new File(attach));
helper.addAttachment(file.getFilename(), file);
}
}
mailSender.send(mime);
} catch (Exception e) {
e.printStackTrace();
throw new Exception(e);
}
}
public JavaMailSender getMailSender() {
return mailSender;
}
public void setMailSender(JavaMailSender mailSender) {
this.mailSender = mailSender;
}
public TaskExecutor getTaskExecutor() {
return taskExecutor;
}
public void setTaskExecutor(TaskExecutor taskExecutor) {
this.taskExecutor = taskExecutor;
}
}