javamail如何读取回执信息.docx

java如何读取回执信息？下面是Java代码：package?byd.core;????import?java.io.BufferedReader;??import?java.io.File;??import?java.io.FileInputStream;??import?java.io.FileNotFoundException;??import?java.io.IOException;??import?java.io.InputStream;??import?java.io.InputStreamReader;??import?java.io.PrintWriter;??import?java.io.UnsupportedEncodingException;??import?.Socket;??import?java.nio.charset.Charset;??import?java.text.SimpleDateFormat;??import?java.util.ArrayList;??import?java.util.Date;??import?java.util.HashMap;??import?java.util.List;??import?java.util.Map;????import?sun.misc.BASE64Encoder;????/**??*?该类使用Socket连接到邮件服务器，?并实现了向指定邮箱发送邮件及附件的功能。??*???*?@author?Kou?Hongtao??*/??public?class?Email?{????????/**??????*?换行符??????*/??????private?static?final?String?LINE_END?=?\r\n;????????/**??????*?值为“true”输出高度信息（包括服务器响应信息），值为“?false”则不输出调试信息。??????*/??????private?boolean?isDebug?=?true;????????/**??????*?值为“true”则在发送邮件{@link?Mail#send()}?过程中会读取服务器端返回的消息，??????*?并在邮件发送完毕后将这些消息返回给用户。??????*/??????private?boolean?isAllowReadSocketInfo?=?true;????????/**??????*?邮件服务器地址??????*/??????private?String?host;????????/**??????*?发件人邮箱地址??????*/??????private?String?from;????????/**??????*?收件人邮箱地址??????*/??????private?ListString?to;????????/**??????*?抄送地址??????*/??????private?ListString?cc;????????/**??????*?暗送地址??????*/??????private?ListString?bcc;????????/**??????*?邮件主题??????*/??????private?String?subject;????????/**??????*?用户名??????*/??????private?String?user;????????/**??????*?密码??????*/??????private?String?password;????????/**??????*?MIME邮件类型??????*/??????private?String?contentType;????????/**??????*?用来绑定多个邮件单元{@link?#partSet}??????*?的分隔标识，我们可以将邮件的正文及每一个附件都看作是一个邮件单元?。??????*/??????private?String?boundary;????????/**??????*?邮件单元分隔标识符，该属性将用来在邮件中作为分割各个邮件单元的标识?。??????*/??????private?String?boundaryNextPart;????????/**??????*?传输邮件所采用的编码??????*/??????private?String?contentTransferEncoding;????????/**??????*?设置邮件正文所用的字符集??????*/??????private?String?charset;????????/**??????*?内容描述??????*/??????private?Str