package?emailClient;

import?java.io.BufferedReader;
import?java.io.DataOutputStream;
import?java.io.IOException;
import?java.io.InputStreamReader;
import?java.net.Socket;
import?java.net.UnknownHostException;
import?java.util.base64;
import?java.util.Scanner;

/**
?*?
?*?@author?sunyuhu
?*?@category?this?is?an?email?client.
?*?@version?v20180914
?*/
public?class?Client?{
	public?static?void?main（String[]?args）{
		//新建一個tcp連接，和網易的
		try?{
			Socket?client?=?new?Socket（“smtp.qq.com“25）;
????????????BufferedReader?br?=?new?BufferedReader（new?InputStreamReader（client.getInputStream（）））;
????????????String?response?=?br.readLine（）;
????????????String?username;?????????????????????????????//用戶名
????????????String?password;?????????????????????????????//密碼
????????????String?receiver;?????????????????????????????//接收用戶名
????????????String?subject;??????????????????????????????//郵件主題
????????????String?str;
????????????StringBuffer?content?=?new?StringBuffer（）;
????????????if（response.equals（“220?smtp.qq.com?Esmtp?QQ?Mail?Server“））{
????????????	System.out.println（“客戶端已經連接到騰訊郵件服務器??！“）;
????????????	
????????????	//輸入EHLO指令
????????????	DataOutputStream?dos?=?new?DataOutputStream（client.getOutputStream（））;
????			dos.writeBytes（“HELO?sunyuhu\r\n“）;
????			dos.flush（）;
????	????????response?=?br.readLine（）;
????	????????if（!response.equals（“250?smtp.qq.com“））{
????	????????	?System.out.println（“命令錯誤?。。　埃?
????	????????}
????	????????
????	????????//輸入認證指令，用戶名和密碼
????			dos.writeBytes（“AUTH?LOGIN\r\n“）;
????			dos.flush（）;
????	????????response?=?br.readLine（）;
????	????????if（!response.equals（“334?VXNlcm5hbWU6“））{
???	????????	?	System.out.println（“命令錯誤?。?！“）;
???	????????????}else{
???	????????????	System.out.print（“請輸入用戶名：“）;
???	????????????	Scanner?sc?=?new?Scanner（System.in）;
???	????????????	username?=?sc.nextLine（）;
???	????????????	//base64.getEncoder（）.encodeToString（username.getBytes（））;
???	????????????	//dos.writeBytes（“MTI2Mzc1ODM4N0BxcS5jb20=\r\n“）;
???	????????????	dos.writeBytes（base64.getEncoder（）.encodeToString（username.getBytes（））+?“\r\n“）;
???	????			dos.flush（）;
???	????	????????response?=?br.readLine（）;
	???	????	????if（!response.equals（“334?UGFzc3dvcmQ6“））{
	????	????????	?	System.out.println（“用戶名輸入錯誤?。。　埃?
	????	????????}else{
	????	????????	????System.out.println（“用戶名輸入成功?。。　埃?
	????	????????????	System.out.print（“請輸入密碼：“）;
	????	????????????	sc?=?new?Scanner（System.in）;
	????	????????????	password?=?sc.nextLine（）;
	????	????????????	dos.writeBytes（“dm54dmJ2YWJpbXZwaGpjZQ==\r\n“）;
	????	????			dos.flush（）;
	????	????	????????response?=?br.readLine（）;
	????	????	????????if（!response.equals（“235?Authentication?successful“））{
	????	????	????????	System.out.println（“密碼輸入錯誤?。?！“）;
	????	????	????????}else{
	????	????	????????	System.out.println（“登錄成功?。?！“）;
	????	????	????????	System.out.print（“請輸入收件人：“）;
		????	????????????	sc?=?new?Scanner（System.in）;
		????	?????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????301??2018-09-14?22:42??ComputerNetworking\.classpath

?????文件????????394??2018-09-14?22:42??ComputerNetworking\.project

?????文件????????598??2018-09-14?22:42??ComputerNetworking\.settings\org.eclipse.jdt.core.prefs

?????文件???????4124??2018-09-14?22:42??ComputerNetworking\bin\emailClient\Client.class

?????文件????????807??2018-09-14?22:42??ComputerNetworking\bin\emailClient\Main$1.class

?????文件???????3878??2018-09-14?22:42??ComputerNetworking\bin\emailClient\Main$2.class

?????文件???????2565??2018-09-14?22:42??ComputerNetworking\bin\emailClient\Main.class

?????文件???????1141??2018-09-14?22:42??ComputerNetworking\bin\emailClient\WriteAndSendEmail$1.class

?????文件???????1087??2018-09-14?22:42??ComputerNetworking\bin\emailClient\WriteAndSendEmail$2.class

?????文件???????4471??2018-09-14?22:42??ComputerNetworking\bin\emailClient\WriteAndSendEmail$3.class

?????文件???????3622??2018-09-14?22:42??ComputerNetworking\bin\emailClient\WriteAndSendEmail.class

?????文件???????2423??2018-09-14?22:42??ComputerNetworking\bin\httpServer\HttpServer.class

?????文件???????1744??2018-09-14?22:42??ComputerNetworking\bin\udp\UDPClient.class

?????文件???????1518??2018-09-14?22:42??ComputerNetworking\bin\udp\UDPServer.class

?????文件???????4544??2018-09-14?22:42??ComputerNetworking\src\emailClient\Client.java

?????文件???????5763??2018-09-14?22:42??ComputerNetworking\src\emailClient\Main.java

?????文件???????7705??2018-09-14?22:42??ComputerNetworking\src\emailClient\WriteAndSendEmail.java

?????文件???????2261??2018-09-14?22:42??ComputerNetworking\src\httpServer\HttpServer.java

?????文件???????1083??2018-09-14?22:42??ComputerNetworking\src\udp\UDPClient.java

?????文件????????967??2018-09-14?22:42??ComputerNetworking\src\udp\UDPServer.java

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\bin\emailClient

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\bin\httpServer

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\bin\udp

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\src\emailClient

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\src\httpServer

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\src\udp

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\.settings

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\bin

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking\src

?????目錄??????????0??2018-09-14?22:42??ComputerNetworking

............此處省略3個文件信息