javasocket实现SMTP协议发送邮件

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1、javasocket实现SMTP协议发送邮件文章分类:Java编程packagecom.socket.test;importjava.io.BufferedReader;importjava.io.DataOutputStream;importjava.io」OException;importjava.ioputStreamReader;importjava.net.Socket;importjava.net.UnknownHostException;importcom.sun.org.apache.xerces.internal・impl・dv.util・Base64;/***通过soc

2、ket向smtp协议服务器发送邮件*@authorfuyanqing♦*/publicclassSocketMail{StringmailServer;Stringfrom;Stringto;Stringcontent;StringlineFeet="r";privateintport=25;Socketdient;BufferedReaderin;DataOutputStreamos;publicStringgetContent(){returncontent;}publicvoidsetContent(Stringcontent){this.content=content;}pu

3、blicStringgetMailServerf){returnmailServer;}publicvoidsetMailServerfStringmailServer){this.mailServer=mailServer;}publicStringgetFrom(){returnfrom;}publicvoidsetFrom(Stringfrom){this.from=from;}publicStringgetTo(){returnto;}publicvoidsetTo(Stringto){this.to=to;}/***初始化连接*(©return*/privatebooleanin

4、it(){booleanboo=true;if(mailServer=二null11,,H.equals(mailServer)){returnfalse;}try{dient=newSocket(mailServer,port);in=newBufferedReader(newInputStreamReaderfclient.getlnputStream()));os=newDataOutputStream(client.getOutputStream());StringisConnect=response();if(isConnect.startsWith("220")){}else{

5、System.out.printing建立连接失败:*'+isConnect);boo=false;}}catch(UnknownHostExceptione){System.out.println(n建立连接失败!“);e.printStackTrace();boo=false;}catch(lOExceptione){System.out.println(”读取流失败!”);e.printStackTrace();boo=false;}returnboo;}/***发送smtp指令*并返回服务器响应信息privateStringsendCommand(Stringmsg){String

6、result=null;try{os.writeBytes(msg);os.flush();result=response();}catch(lOExceptione){e.printStackTrace();}returnresult;}/***读取服务器端响应信息*@return7privateStringresponse(){Stringresult=null;try{result=in.readUne();}catch(lOExceptione){e.printStackTrace();}returnresult;}/***关闭*/privatevoidclose(){try{os

7、.close();in.close();client.close();}catch(lOExceptione){e.printStackTrace();}}/***发送邮件*@returnTpublicbooleansendMail(){〃初始化if(client==null){if(init()){}else{returnfalse;}}〃判断from,toifffrom二二null11from.isEmpty()11