无法访问所有'；gmail&x27；在java中使用pop3的消息_Java_Email

无法访问所有'；gmail&x27；在java中使用pop3的消息

java email

无法访问所有'；gmail&x27；在java中使用pop3的消息,java,email,Java,Email,我的java邮件接收程序我在java程序中使用mail.1.4.jar和激活jar 使用JavaMail API接收电子邮件需要遵循5个步骤。他们是：获取会话对象创建POP3存储对象并连接pop服务器创建文件夹对象并将其打开从数组中的文件夹中检索邮件并将其打印关闭存储和文件夹对象这是我的密码： public class receive_Email { public static void main(String[] args) { String ho

我的java邮件接收程序 我在java程序中使用mail.1.4.jar和激活jar

使用JavaMail API接收电子邮件需要遵循5个步骤。他们是：
获取会话对象
创建POP3存储对象并连接pop服务器
创建文件夹对象并将其打开
从数组中的文件夹中检索邮件并将其打印
关闭存储和文件夹对象

这是我的密码：

public class receive_Email {

    public static void main(String[] args) {
        String host="pop.gmail.com";
        String mailStorType="pop3";
        String Username="***********@gmail.com";
        String Password="*******";

        receiveMail(host, mailStorType, Username, Password);
    }

    // method for Receive email.....!
    public static void receiveMail(String pop3Host,String sotreType,String user,String password){

        ///   1) get session object

        Properties props=new Properties();
            props.put("mail.pop3.host", pop3Host );
        Session sessEmail=Session.getDefaultInstance(props);

        // 2) create pop3 store object and connect with pop server
        try {
            POP3Store emailStore=(POP3Store)sessEmail.getStore(sotreType);
            emailStore.connect(user,password);

        // 3) create Folder object and open it
            Folder emailFolder=emailStore.getFolder("INBOX");
            emailFolder.open(Folder.READ_ONLY);

        //  4) Retrieve the messages in the folder and display it   
            Message[] messages=emailFolder.getMessages();
            int i=0;
            for(Message m : messages){
                System.out.println("------------------------------------------------");
                System.out.println("Email Number : "+m.getMessageNumber());
                System.out.println("Subject : "+m.getSubject());
                System.out.println("From : "+m.getFrom());
                try {
                    System.out.println("Subject : "+m.getContent().toString());
                } catch (IOException e) {
                    System.out.println("No messages are available.............!");
                        e.printStackTrace();
                }

            } // end for loop 

            // 5) Close the Folder and email store
            emailFolder.close(false);
            emailStore.close();

        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }

    }
}

我得到的例外是：

javax.mail.MessagingException: Connect failed;
  nested exception is:
    java.net.ConnectException: Connection timed out: connect
    at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:148)
    at javax.mail.Service.connect(Service.java:275)
    at javax.mail.Service.connect(Service.java:156)
    at javax.mail.Service.connect(Service.java:176)
    at com.mwh.DBConnect.receive_Email.receiveMail(receive_Email.java:37)
    at com.mwh.DBConnect.receive_Email.main(receive_Email.java:22)
    Caused by: java.net.ConnectException: Connection timed out: connect
.....
..

任何关于消除此异常的建议。。。提前谢谢

我很确定GMail只接受SSL连接。请尝试以下代码：

import com.sun.mail.pop3.POP3Store;

import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import java.io.IOException;
import java.util.Properties;

public class receive_Email {

  public static void main(String[] args) {
    String host="pop.gmail.com";
    int port=995;
    String mailStorType="pop3";
    String Username="***********@gmail.com";
    String Password="*******";

    receiveMail(host, port, mailStorType, Username, Password);
  }

  // method for Receive email.....!
  public static void receiveMail(String pop3Host, int port, String sotreType,String user,String password){

    ///   1) get session object

    Properties props = new Properties();
    props.put("mail.pop3.ssl.enable", "true"); // Use SSL
    Session sessEmail = Session.getInstance(props);

    // 2) create pop3 store object and connect with pop server
    try {
      POP3Store emailStore = (POP3Store) sessEmail.getStore(sotreType);
      emailStore.connect(pop3Host, port, user, password);

      // 3) create Folder object and open it
      Folder emailFolder=emailStore.getFolder("INBOX");
      emailFolder.open(Folder.READ_ONLY);

      //  4) Retrieve the messages in the folder and display it   
      Message[] messages=emailFolder.getMessages();

      for(Message m : messages){
        System.out.println("------------------------------------------------");
        System.out.println("Email Number : "+m.getMessageNumber());
        System.out.println("Subject : "+m.getSubject());
        System.out.println("From : "+m.getFrom());
        try {
          System.out.println("Subject : "+m.getContent().toString());
        } catch (IOException e) {
          System.out.println("No messages are available.............!");
          e.printStackTrace();
        }

      } // end for loop 

      // 5) Close the Folder and email store
      emailFolder.close(false);
      emailStore.close();

    } catch (NoSuchProviderException e) {
      e.printStackTrace();
    } catch (MessagingException e) {
      e.printStackTrace();
    }

  }
}

我很确定GMail只接受SSL连接。请尝试以下代码：

import com.sun.mail.pop3.POP3Store;

import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import java.io.IOException;
import java.util.Properties;

public class receive_Email {

  public static void main(String[] args) {
    String host="pop.gmail.com";
    int port=995;
    String mailStorType="pop3";
    String Username="***********@gmail.com";
    String Password="*******";

    receiveMail(host, port, mailStorType, Username, Password);
  }

  // method for Receive email.....!
  public static void receiveMail(String pop3Host, int port, String sotreType,String user,String password){

    ///   1) get session object

    Properties props = new Properties();
    props.put("mail.pop3.ssl.enable", "true"); // Use SSL
    Session sessEmail = Session.getInstance(props);

    // 2) create pop3 store object and connect with pop server
    try {
      POP3Store emailStore = (POP3Store) sessEmail.getStore(sotreType);
      emailStore.connect(pop3Host, port, user, password);

      // 3) create Folder object and open it
      Folder emailFolder=emailStore.getFolder("INBOX");
      emailFolder.open(Folder.READ_ONLY);

      //  4) Retrieve the messages in the folder and display it   
      Message[] messages=emailFolder.getMessages();

      for(Message m : messages){
        System.out.println("------------------------------------------------");
        System.out.println("Email Number : "+m.getMessageNumber());
        System.out.println("Subject : "+m.getSubject());
        System.out.println("From : "+m.getFrom());
        try {
          System.out.println("Subject : "+m.getContent().toString());
        } catch (IOException e) {
          System.out.println("No messages are available.............!");
          e.printStackTrace();
        }

      } // end for loop 

      // 5) Close the Folder and email store
      emailFolder.close(false);
      emailStore.close();

    } catch (NoSuchProviderException e) {
      e.printStackTrace();
    } catch (MessagingException e) {
      e.printStackTrace();
    }

  }
}

我很确定GMail只接受SSL连接。请尝试以下代码：

import com.sun.mail.pop3.POP3Store;

import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import java.io.IOException;
import java.util.Properties;

public class receive_Email {

  public static void main(String[] args) {
    String host="pop.gmail.com";
    int port=995;
    String mailStorType="pop3";
    String Username="***********@gmail.com";
    String Password="*******";

    receiveMail(host, port, mailStorType, Username, Password);
  }

  // method for Receive email.....!
  public static void receiveMail(String pop3Host, int port, String sotreType,String user,String password){

    ///   1) get session object

    Properties props = new Properties();
    props.put("mail.pop3.ssl.enable", "true"); // Use SSL
    Session sessEmail = Session.getInstance(props);

    // 2) create pop3 store object and connect with pop server
    try {
      POP3Store emailStore = (POP3Store) sessEmail.getStore(sotreType);
      emailStore.connect(pop3Host, port, user, password);

      // 3) create Folder object and open it
      Folder emailFolder=emailStore.getFolder("INBOX");
      emailFolder.open(Folder.READ_ONLY);

      //  4) Retrieve the messages in the folder and display it   
      Message[] messages=emailFolder.getMessages();

      for(Message m : messages){
        System.out.println("------------------------------------------------");
        System.out.println("Email Number : "+m.getMessageNumber());
        System.out.println("Subject : "+m.getSubject());
        System.out.println("From : "+m.getFrom());
        try {
          System.out.println("Subject : "+m.getContent().toString());
        } catch (IOException e) {
          System.out.println("No messages are available.............!");
          e.printStackTrace();
        }

      } // end for loop 

      // 5) Close the Folder and email store
      emailFolder.close(false);
      emailStore.close();

    } catch (NoSuchProviderException e) {
      e.printStackTrace();
    } catch (MessagingException e) {
      e.printStackTrace();
    }

  }
}

我很确定GMail只接受SSL连接。请尝试以下代码：

import com.sun.mail.pop3.POP3Store;

import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import java.io.IOException;
import java.util.Properties;

public class receive_Email {

  public static void main(String[] args) {
    String host="pop.gmail.com";
    int port=995;
    String mailStorType="pop3";
    String Username="***********@gmail.com";
    String Password="*******";

    receiveMail(host, port, mailStorType, Username, Password);
  }

  // method for Receive email.....!
  public static void receiveMail(String pop3Host, int port, String sotreType,String user,String password){

    ///   1) get session object

    Properties props = new Properties();
    props.put("mail.pop3.ssl.enable", "true"); // Use SSL
    Session sessEmail = Session.getInstance(props);

    // 2) create pop3 store object and connect with pop server
    try {
      POP3Store emailStore = (POP3Store) sessEmail.getStore(sotreType);
      emailStore.connect(pop3Host, port, user, password);

      // 3) create Folder object and open it
      Folder emailFolder=emailStore.getFolder("INBOX");
      emailFolder.open(Folder.READ_ONLY);

      //  4) Retrieve the messages in the folder and display it   
      Message[] messages=emailFolder.getMessages();

      for(Message m : messages){
        System.out.println("------------------------------------------------");
        System.out.println("Email Number : "+m.getMessageNumber());
        System.out.println("Subject : "+m.getSubject());
        System.out.println("From : "+m.getFrom());
        try {
          System.out.println("Subject : "+m.getContent().toString());
        } catch (IOException e) {
          System.out.println("No messages are available.............!");
          e.printStackTrace();
        }

      } // end for loop 

      // 5) Close the Folder and email store
      emailFolder.close(false);
      emailStore.close();

    } catch (NoSuchProviderException e) {
      e.printStackTrace();
    } catch (MessagingException e) {
      e.printStackTrace();
    }

  }
}

我得到了我需要的答案，谢谢用户1232141，谢谢你的友好回复。。我从这个参考中得到了解决方案stactoverflow：
以下是对我有用的代码：

publicstaticvoidreceiveemail（字符串pop3Host、字符串storeType、最终字符串用户、最终字符串密码）{
试试{
//1） 获取会话对象
Properties props=新属性（）；
props.put（“mail.pop3.host”、“pop.gmail.com”）；
props.put（“mail.pop3.ssl.enable”，“true”）；//使用ssl
props.put（“mail.pop3.user”，user）；
props.put（“mail.pop3.socketFactory”，995）；
put（“mail.pop3.socketFactory.class”，“javax.net.ssl.SSLSocketFactory”）；
props.put（“mail.pop3.port”，995）；
Session Session=Session.getDefaultInstance（props，new Authenticator（）{
@凌驾
受保护的密码身份验证getPasswordAuthentication（）{
返回新的PasswordAuthentication（用户、密码）；
}
});  
//2） 创建POP3存储对象并连接pop服务器
Store emailStore=（Store）session.getStore（storeType）；
emailStore.connect（“pop.gmail.com”，995，用户，密码）；
//3） 创建文件夹对象并将其打开
文件夹emailFolder=emailStore.getFolder（“收件箱”）；
emailFolder.open（文件夹只读）；
//4） 从数组中的文件夹中检索邮件并打印
Message[]messages=emailFolder.getMessages（）；
对于（inti=0；i


正如您所见，我编辑了提供的方法receiveEmail（..{..}，并得到了答案，

感谢srackoverflow用户@wael您的问题帮助我找到了所需的解决方案。。。谢谢大家…我得到了我所需要的答案，谢谢用户1232141对你们的友好回复。。
我从这个参考中得到了解决方案stactoverflow：

以下是对我有用的代码：


publicstaticvoidreceiveemail（字符串pop3Host、字符串storeType、最终字符串用户、最终字符串密码）{
试试{
//1） 获取会话对象
Properties props=新属性（）；
props.put（“mail.pop3.host”、“pop.gmail.com”）；
props.put（“mail.pop3.ssl.enable”，“true”）；//使用ssl
props.put（“mail.pop3.user”，user）；
props.put（“mail.pop3.socketFactory”，995）；
put（“mail.pop3.socketFactory.class”，“javax.net.ssl.SSLSocketFactory”）；
props.put（“mail.pop3.port”，995）；
Session Session=Session.getDefaultInstance（props，new Authenticator（）{
@凌驾
受保护的密码身份验证getPasswordAuthentication（）{
返回新的PasswordAuthentication（用户、密码）；
}
});  
//2） 创建POP3存储对象并连接pop服务器
Store emailStore=（Store）session.getStore（storeType）；
emailStore.connect（“pop.gmail.com”，995，用户，密码）；
//3） 创建文件夹对象并将其打开
文件夹emailFolder=emailStore.getFolder（“收件箱”）；
emailFolder.open（文件夹只读）；
//4） 从数组中的文件夹中检索邮件并打印
Message[]messages=emailFolder.getMessages（）；
对于（inti=0；i