检验电子邮件地址是否真实
上一篇 / 下一篇 2008-06-02 14:51:44 / 个人分类：电脑技术
import java.io.*;
import java.net.*;
import org.xbill.DNS.*;
public class CheckEmail
...{
public static boolean check(String mailTo)
...{
if (!mailTo.matches("w+([-_.]w+)*@w+([-.]w+)*.w+([-.]w+)*")) ...{ //判断格式
return false;
}
String hostName = mailTo.split("@")[1]; //获得如163.com
String host = null; // MX记录
try ...{
Lookup lookup = new Lookup(hostName, Type.MX);
lookup.run();
if (lookup.getResult() != Lookup.SUCCESSFUL) ...{
return false;
}
else ...{
Record[] result = lookup.getAnswers();
host = result[0].getAdditionalName().toString();
}
Socket socket = new Socket(host, 25);
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
in.readLine();
out.write("HELO Sender ");
out.flush();
in.readLine();
out.write("MAIL FROM:<xx@xxx.xx> ");
out.flush();
in.readLine();
out.write("RCPT TO:<" + mailTo + "> ");
out.flush();
String r = in.readLine();
out.write("QUIT ");
out.flush();
out.close();
in.close();
socket.close();
if (!r.startsWith("250")) ...{
return false;
}
else ...{
return true;
}
} catch (Exception e) ...{
return false;
}
}
}
import java.net.*;import org.xbill.DNS.*;public class CheckEmail...{ public static boolean check(String mailTo) ...{ if (!mailTo.matches("w+([-_.]w+)*@w+([-.]w+)*.w+([-.]w+)*")) ...{ //判断格式 return false; } String hostName = mailTo.split("@")[1]; //获得如163.com String host = null; // MX记录 try ...{ Lookup lookup = new Lookup(hostName, Type.MX); lookup.run(); if (lookup.getResult() != Lookup.SUCCESSFUL) ...{ return false; } else ...{ Record[] result = lookup.getAnswers(); host = result[0].getAdditionalName().toString(); } Socket socket = new Socket(host, 25); BufferedWriter out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())); BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); in.readLine(); out.write("HELO Sender "); out.flush(); in.readLine(); out.write("MAIL FROM:<xx@xxx.xx> "); out.flush(); in.readLine(); out.write("RCPT TO:<" + mailTo + "> "); out.flush(); String r = in.readLine(); out.write("QUIT "); out.flush(); out.close(); in.close(); socket.close(); if (!r.startsWith("250")) ...{ return false; } else ...{ return true; } } catch (Exception e) ...{ return false; } }}导入论坛 引用链接 收藏 分享给好友 推荐到圈子 管理 举报
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- 建立时间: 2007-11-12
- 更新时间: 2008-10-17
