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如何修復(fù)“java.net.ConnectException：連接被拒絕：連接”

Java

PIPIONE 2023-07-28 15:10:29

我正在嘗試通過我的網(wǎng)站（JSF 網(wǎng)站）發(fā)送電子郵件，該網(wǎng)站部署在 apache 服務(wù)器上，但我不斷收到“連接被拒絕：連接”消息，但是如果我直接從 NetBeans 運行 Java 應(yīng)用程序中的代碼，則代碼可以完美運行。抱歉，如果我在帖子中犯了一些錯誤，你可以說這是我第一次發(fā)帖。:) public void sendReplicationCheckResult() { String to = "JcbSupportingSystem@jcbank.com.jo"; // Sender's email ID needs to be mentioned String from = "Palestine.IT@jcbank.com.jo"; // Assuming you are sending email from localhost String host = "192.168.52.95"; // Get system properties Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); properties.put("mail.smtp.auth", "false"); properties.setProperty("mail.smtp.port", "25"); // Get the default Session object. Session session = Session.getDefaultInstance(properties); try { // Create a default MimeMessage object. MimeMessage message = new MimeMessage(session); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("Replication Check Results"); // Create the message part BodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setContent(message, "text/html"); // Create a multipart message Multipart multipart = new MimeMultipart(); // Set text message part multipart.addBodyPart(messageBodyPart); // Part two is attachment messageBodyPart = new MimeBodyPart(); String filename = "C:\\Temp\\ReplicationCheck.pdf"; DataSource source = new FileDataSource(filename); messageBodyPart.setDataHandler(new DataHandler(source)); messageBodyPart.setFileName(filename); multipart.addBodyPart(messageBodyPart);

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2 回答

墨色風(fēng)雨

TA貢獻1853條經(jīng)驗獲得超6個贊

192.168.52.95是LAN地址。雖然在您的開發(fā)環(huán)境中可能有一個郵件服務(wù)器在等待，但在您的服務(wù)器環(huán)境中沒有任何東西192.168.52.95。

您可能想從屬性文件中讀取主機，這樣您就可以在不同的環(huán)境中使用不同的主機。

反對回復(fù) 2023-07-28

汪汪一只貓

TA貢獻1898條經(jīng)驗獲得超8個贊

我能夠使用以下代碼解決該問題。我的朋友告訴我，java部署在apache上后需要有效的用戶名和密碼才能連接到smtp服務(wù)器，所以我添加了它們，但在我使用sslsocket連接非正常套接字后我的問題解決了。(t.connect(new Socket(host, 25));) //舊方式 //新代碼使用 (t.connect(new SSLSocket(SMTP_SERVER, 25))。

private static final String SMTP_SERVER = "smtp server";

private static final String USERNAME = "username";

private static final String PASSWORD = "password";

private static final String EMAIL_FROM = "email from";

private static final String EMAIL_TO = "email to";

private static final String EMAIL_TO_CC = "cc";

private static final String EMAIL_SUBJECT = "Subject";

public void sendReplicationCheckResult() {

// Get system properties

Properties properties = System.getProperties();

// Setup mail server

properties.setProperty("mail.transport.protocol", "smtp");

properties.setProperty("mail.smtp.host", SMTP_SERVER);

properties.setProperty("mail.smtp.port", "25");

properties.put("mail.smtp.starttls.enable", "true");

properties.put("mail.smtp.auth", "false");

// Get the default Session object.

Session session = Session.getDefaultInstance(properties);

try {

// Create a default MimeMessage object.

MimeMessage message = new MimeMessage(session);

// Set From: header field of the header.

message.setFrom(new InternetAddress(EMAIL_FROM));

// Set To: header field of the header.

message.addRecipient(Message.RecipientType.TO, new InternetAddress(EMAIL_TO));

// Set Subject: header field

message.setSubject(EMAIL_SUBJECT);

// Create the message part

BodyPart messageBodyPart = new MimeBodyPart();

// Fill the message

// messageBodyPart.setText("This is message body");

// Create a multipart message

Multipart multipart = new MimeMultipart();

// Set text message part

//multipart.addBodyPart(messageBodyPart);

// Part two is attachment

messageBodyPart = new MimeBodyPart();

String filename = "File Path";

DataSource source = new FileDataSource(filename);

messageBodyPart.setDataHandler(new DataHandler(source));

messageBodyPart.setFileName("File Name");

multipart.addBodyPart(messageBodyPart);

// Send the complete message parts

message.setContent(multipart);

// Send message

SMTPTransport t = (SMTPTransport) session.getTransport("smtp");

// connect

t.connect(new SSLSocket(SMTP_SERVER, 25) {

@Override

public String[] getSupportedCipherSuites() {