java mail socket版本.docx

使用 java 发送邮件本身是可以使用 已经存在 的 第三方的jar包，javaMail的，但是这里使用的java 的socket 版本，本质就是利用 smtp 的协议。因为 socket 就是相当于 telnet。当你使用了 telnet 的命令连上了smtp 的服务器之后，接下来就是完全的，smtp 的 命令。所以socket也是一样的，首先要连接 smtp 的服务器，然后使用 io 将命令写进去。代码如下：客户端的 代码public class Test public static void main(String args) JMail mail=new JMail(); mail.setServerName(smtp. com); mail.setDate(new Date().toString(); mail.setAccount(mengdejun_520); mail.setFrom_address(mengdejun_520 com); mail.setTo_address(280759843); mail.setPassword(*); mail.setFrom_name(mengdejun_520 com); mail.setPort(25); mail.setSubject(test); mail.setTo_name(mengdejun_168 com); mail.addBody(你好吗?java编程！+new Date(); try mail.send(); mail.destory(); catch (Exception e) e.printStackTrace(); Socket实现的代码public class JMail implements Send private Socket client = null; private String from_address = null, account = null, password = null,to_address; private StringBuffer body = new StringBuffer(); private PrintWriter out = null; private BufferedReader in = null; private String date = new Date().toLocaleString(); private String from_name = null, to_name = null, subject = null, content_Type = Content-Type: text/plain;charset=GB2312; private boolean isAuthLogin = true; private String serverName = null; private int port = 25; public boolean destory() throws Exception client.close(); in.close(); out.close(); response(Done); return true; public JMail(String from_address, String account, String password, String serverName) super(); this.from_address = from_address; this.account = account; this.password = password; this.serverName = serverName; this.from_name = this.from_address; public JMail() public int getPort() return port; public void setPort(int port) this.port = port; public String getServerName() return serverName; public void setServerName(String serverName) this.serverName = serverName; public String getFrom_address() return from_address; public void setFrom_address(String from_address) this.from_address = from_address; public String getTo_address() return to_address; public void setTo_address(String to_address) this.to_address = to_address; public String getAccount() return account; public void setAccount(String account) this.account = account; public String getPassword() return password; public void setPassword(String password) this.password = password; public void addBody(String content) if (isAuthLogin) body.append(From: rn); body.append(To: rn); body.append(Subject: + this.subject + rn); body.append(this.content_Type + rn); body.append(rn); body.append(content + rn); body.append(.rn); public String getDate() return date; public void setDate(String date) this.date = date; public String getFrom_name() return from_name; public void setFrom_name(String from_name) this.from_name = from_name; public String getTo_name() return to_name; public void setTo_name(String to_name) this.to_name = to_name; public String getSubject() return subject; public void setSubject(String subject) this.subject = subject; public String getContent_Type() return content_Type; public void setContent_Type(String content_Type) this.content_Type = content_Type; public boolean isAuthLogin() return (isAuthLogin != (this.account = null & this.password = null & this.from_address = null & this.to_address=null & this.serverName = null & this.body.length() 1); public void send() throws Exception if (parse() out.println(QUIT); private boolean parse() boolean isReady = false; if (this.account = null & this.password = null & this.from_address = null & this.to_address =null & this.serverName = null & this.body.length() 1) isAuthLogin = false; isReady = false; return isReady; try client = new Socket(this.serverName, this.port); out = new PrintWriter(client.getOutputStream(); in = new BufferedReader(new InputStreamReader(client .getInputStream(); response(in.readLine(); out.println(ehlo MDJ); out.flush(); response(in.readLine(); out.println(AUTH LOGIN); out.flush(); response(in.readLine(); response(in.readLine(); response(in.readLine(); response(in.readLine(); out.println(Encode(this.account); out.flush(); response(in.readLine(); out.println(Encode(this.password); out.flush(); response(in.readLine(); out.println(mail from: ); out.flush(); response(in.readLine(); out.println(rcpt to: ); out.flush(); response(in.readLine(); out.println(data); out.flush(); response(in.readLine(); /* * out.print(from: n); * out.print(to: ); * out.print(Subject: n); out.print(nn); */ out.println(body.toString(); out.flush(); response(in.readLine(); response(in.readLine(); / out.println(.); isReady = true; catch (UnknownHostException e) e.printStackTrace(); catch (IOException e) e.printStackTrace(); return isReady; publi