java邮件附件变成ATT00001.bin

java 邮件发送附件在本地和测试服务器都没问题
在华为云的服务器出现了附件 变成ATT00001.bin
由于生产环境不方便测试
1.直接加了静态代码块：
static {
System.setProperty(“mail.mime.splitlongparameters”, “false”);
System.setProperty(“mail.mime.charset”, “UTF-8”);
}
2.附件名加了
part.setFileName(MimeUtility.encodeText(fds.getName())) ；
（原来附件名是MimeUtility.encodeWord(fds.getName()) 生产环境不支持）

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.*;
import java.util.Properties;

public class MailUtil {


	// 代理配置信息
	private  int proxyPort;

	private  String proxyHost;

	private  String smtpHost;

	private  String smtpPort;

	private  String user;

	private  String password;

	private  String mailName;
	static {
		System.setProperty("mail.mime.splitlongparameters", "false");
		System.setProperty("mail.mime.charset", "UTF-8");
	}

	public LangFangMailUtil(int proxyPort,String proxyHost,String smtpHost,String smtpPort,String user,String password,String mailName){
		this.proxyPort =proxyPort;
		this.proxyHost =proxyHost;
		this.smtpHost =smtpHost;
		this.smtpPort =smtpPort;
		this.user =user;
		this.password =password;
		this.mailName =mailName;
	}

	public  void sendMail(String addressee, String body, String data,String title) throws Exception {
		Properties properties = System.getProperties();
		properties.setProperty("proxySet", "true");
		properties.put("mail.smtp.proxy.host", proxyHost);
		properties.put("mail.smtp.proxy.port", proxyPort);
		properties.put("mail.transport.protocol", "smtp");// 连接协议
		properties.put("mail.smtp.host", smtpHost);// 主机名
		properties.put("mail.smtp.port", smtpPort);// 端口号
		properties.put("mail.smtp.auth", "true");
//		properties.put("mail.smtp.ssl.enable", "true");// 设置是否使用ssl安全连接 ---一般都使用
		properties.put("mail.debug", "false");// 设置是否显示debug信息 true 会在控制台显示相关信息
//		properties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");// 设置是否使用ssl安全连接

		// 得到回话对象
		Session session = Session.getInstance(properties);
		// 获取邮件对象
		Message message = new MimeMessage(session);
		// 设置发件人邮箱地址
		message.setFrom(new InternetAddress(user, mailName, "UTF-8"));
		// 设置收件人邮箱地址
		String[] addressees = addressee.split(",");
		InternetAddress[] internetAddress = new InternetAddress[addressees.length];
		for (int i = 0; i < addressees.length; i++) {
			internetAddress[i] = new InternetAddress(addressees[i]);
		}
		message.setRecipients(Message.RecipientType.TO, internetAddress);//多个收件人
		// 设置邮件标题
		message.setSubject(title);
		// 设置邮件内容
		MimeBodyPart part2 = new MimeBodyPart();
		part2.setText(body, "UTF-8");
		//单个文件上传
		Multipart multipart = new MimeMultipart();
		MimeBodyPart part = new MimeBodyPart();
		FileDataSource fds = new FileDataSource(data);
		System.err.println(fds.getName());
		part.setFileName(MimeUtility.encodeText(fds.getName()));
		
		part.setDataHandler(new DataHandler(fds));
		multipart.addBodyPart(part);

		multipart.addBodyPart(part2);
		message.setContent(multipart);

		// 得到邮差对象
		Transport transport = session.getTransport();
		// 连接自己的邮箱账户
		transport.connect(user, password);// 密码为QQ邮箱开通的stmp服务后得到的客户端授权码
		// 发送邮件
		transport.sendMessage(message, message.getAllRecipients());
		transport.close();
	}

}