使用Java Netbeans发送电子邮件（例外）_Java_Ssl_Jakarta Mail

使用Java Netbeans发送电子邮件（例外）

java ssl

使用Java Netbeans发送电子邮件（例外）,java,ssl,jakarta-mail,Java,Ssl,Jakarta Mail,最近我制作了一个发送电子邮件的web应用程序。代码运行良好，我没有错误，我有运行时异常 (javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty) 我的index.jsp代码是： <%@page content

最近我制作了一个发送电子邮件的web应用程序。代码运行良好，我没有错误，我有运行时异常

(javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty)

我的index.jsp代码是：

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title> Java Mail </title>
</head>
<body>
    <form action="sendMail.jsp" method="POST">
        <table border="0" align="center" cellpadding="5">
            <tbody>
                <thead><tr> <td colspan="3" align="center">
                <b> Send Mail </b> </td> </tr> </thead>
                <tr>
                    <td> To </td> <td> : </td>
                    <td> <input type="text" name="to" value="" /> </td>
                </tr>
                <tr>
                    <td> Subject </td> <td> : </td>
                    <td> <input type="text" name="subject" value="" /> </td>
                </tr>
                <tr>
                    <td> Message </td> <td> : </td>
                    <td> <textarea name="message" rows="8" cols="30">
                    </textarea></td>
                </tr>
                <tr>
                    <td colspan="3" align="center">
                    <input type="submit" value="Send Mail" />

                    <input type="reset" value="Reset" />
                    <td>
                </tr>
            </tbody>
        </table>
    </form>
</body>
</html>

请帮助我，我总是有运行时异常：

异常javax.mail.MessaginException:无法将套接字转换为TLS；嵌套异常是：

javax.net.ssl.SSLException:java.lang.RuntimeException:意外错误：java.security.invalidalgorithParameterException:trustAnchors参数必须为非空

Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");

通过SSL使用gmail SMTP这是我的代码

import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SendMail {
     public static int Send(String SMTPServer,
                        String Sender,
                        String Recipient,
                        String Subject,
                        String Body,
                        String ErrorMessage,
                        String Attachments) {
    // Error status;
    int ErrorStatus = 0;

    // Create some properties and get the default Session;
    final String username = Sender;
    final String password = "pswd";

    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "587");

    Session session = Session.getInstance(props,
      new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(username, password);
        }
      });

    try {
       // Create a message.
       MimeMessage msg = new MimeMessage(session);

       // extracts the senders and adds them to the message.
       // Sender is a comma-separated list of e-mail addresses as per RFC822.
       {
          InternetAddress[] TheAddresses = InternetAddress.parse(Sender);
          msg.addFrom(TheAddresses);
       }

       // Extract the recipients and assign them to the message.
       // Recipient is a comma-separated list of e-mail addresses as per RFC822.
       {
          InternetAddress[] TheAddresses = InternetAddress.parse(Recipient);
          msg.addRecipients(Message.RecipientType.TO,TheAddresses);
       }

       // Subject field
       msg.setSubject(Subject);

       // Create the Multipart to be added the parts to
       Multipart mp = new MimeMultipart();

       // Create and fill the first message part
       {
          MimeBodyPart mbp = new MimeBodyPart();
          mbp.setText(Body);

          // Attach the part to the multipart;
          mp.addBodyPart(mbp);
       }

       // Attach the files to the message
       if (null != Attachments) {
          int StartIndex = 0, PosIndex = 0;
          while (-1 != (PosIndex = Attachments.indexOf("///",StartIndex))) {
             // Create and fill other message parts;
             MimeBodyPart mbp = new MimeBodyPart();
             FileDataSource fds =
             new FileDataSource(Attachments.substring(StartIndex,PosIndex));
             mbp.setDataHandler(new DataHandler(fds));
             mbp.setFileName(fds.getName());
             mp.addBodyPart(mbp);
             PosIndex += 3;
             StartIndex = PosIndex;
          }
          // Last, or only, attachment file;
          if (StartIndex < Attachments.length()) {
             MimeBodyPart mbp = new MimeBodyPart();
             FileDataSource fds = new FileDataSource(Attachments.substring(StartIndex));
             mbp.setDataHandler(new DataHandler(fds));
             mbp.setFileName(fds.getName());
             mp.addBodyPart(mbp);
          }
       }

       // Add the Multipart to the message
       msg.setContent(mp);

       // Set the Date: header
       msg.setSentDate(new Date());

       // Send the message;
       Transport.send(msg);
    } catch (MessagingException MsgException) {
        System.out.println("blows here");
        ErrorMessage = MsgException.toString();
        Exception TheException = null;
        if ((TheException = MsgException.getNextException()) != null)
         ErrorMessage += "\n" + TheException.toString();
         ErrorStatus = 1;
    }
    System.out.println(ErrorMessage);
    return ErrorStatus;
 } // End Send method

    public static void main(String args[]){
        SendMail.Send("smtp.gmail.com", "my_mail@gmail.com", "my_mail@gmail.com",
                 "try sending mail", "came? ","" ,null); 
    }


 } // End of public class SendMail

import java.util.Date；
导入java.util.Properties；
导入javax.activation.DataHandler；
导入javax.activation.FileDataSource；
导入javax.mail.Message；
导入javax.mail.MessaginException；
导入javax.mail.Multipart；
导入javax.mail.PasswordAuthentication；
导入javax.mail.Session；
导入javax.mail.Transport；
导入javax.mail.internet.InternetAddress；
导入javax.mail.internet.MimeBodyPart；
导入javax.mail.internet.mimessage；
导入javax.mail.internet.MimeMultipart；
公共类SendMail{
公共静态int发送（字符串SMTPServer，
字符串发送器，
字符串收件人，
字符串主题，
弦体，
字符串错误消息，
字符串（附件）{
//错误状态；
int ErrorStatus=0；
//创建一些属性并获取默认会话；
最终字符串用户名=发送者；
最终字符串password=“pswd”；
Properties props=新属性（）；
props.put（“mail.smtp.auth”，“true”）；
props.put（“mail.smtp.starttls.enable”、“true”）；
put（“mail.smtp.host”、“smtp.gmail.com”）；
props.put（“mail.smtp.port”，“587”）；
会话=会话.getInstance（props，
新的javax.mail.Authenticator（）{
受保护的密码身份验证getPasswordAuthentication（）{
返回新密码身份验证（用户名、密码）；
}
});
试一试{
//创建一条消息。
MimeMessage msg=新MimeMessage（会话）；
//提取发件人并将其添加到邮件中。
//根据RFC822，发件人是以逗号分隔的电子邮件地址列表。
{
InternetAddress[]TheAddress=InternetAddress.parse（发送方）；
msg.addFrom（地址）；
}
//提取收件人并将其分配给邮件。
//根据RFC822，收件人是以逗号分隔的电子邮件地址列表。
{
InternetAddress[]TheAddress=InternetAddress.parse（收件人）；
msg.addRecipients（Message.RecipientType.TO，地址）；
}
//主题字段
msg.setSubject（主题）；
//创建要添加零件的多部分
Multipart mp=新的MimeMultipart（）；
//创建并填充第一个消息部分
{
MimeBodyPart mbp=新的MimeBodyPart（）；
mbp.setText（正文）；
//将部件连接到多部件；
mp.addBodyPart（mbp）；
}
//将文件附加到邮件
如果（空！=附件）{
int StartIndex=0，PosIndex=0；
而（-1！=（PosIndex=Attachments.indexOf（“///”，StartIndex）））{
//创建和填充其他消息部分；
MimeBodyPart mbp=新的MimeBodyPart（）；
文件数据源fds=
新的FileDataSource（Attachments.substring（StartIndex，PosIndex））；
setDataHandler（新DataHandler（fds））；
mbp.setFileName（fds.getName（））；
mp.addBodyPart（mbp）；
PosIndex+=3；
StartIndex=PosIndex；
}
//最后一个或仅一个附件文件；
if（StartIndex


对不起，缩进
现在试试。希望它能起作用
这是邮件的输出。在我的电脑里，它发送信息
您的jre中是否安装了可信证书？看看这个我以前看过这个，我什么都不懂，请告诉我我能做什么，我应该遵循什么步骤？您使用的是哪个SMTP服务器？服务器：SMTP.gmail.com我尝试过这个，现在我没有例外，但是页面加载太多，什么也没发生。你收到邮件了，什么都没发生是什么意思？我正在给我的另一封邮件发送一封邮件。单击“发送”时，页面正在加载，既没有异常也没有输出。正在加载网页。您的系统输出是否从主类打印出来？您需要确定您的请求得到了成功处理。@user2284478:您需要更改代码，但这至少会发送邮件。您可以上传项目吗？没有main方法>。它不起作用吗？我刚刚编辑了代码。写下你的邮件地址
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");

import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SendMail {
     public static int Send(String SMTPServer,
                        String Sender,
                        String Recipient,
                        String Subject,
                        String Body,
                        String ErrorMessage,
                        String Attachments) {
    // Error status;
    int ErrorStatus = 0;

    // Create some properties and get the default Session;
    final String username = Sender;
    final String password = "pswd";

    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "587");

    Session session = Session.getInstance(props,
      new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(username, password);
        }
      });

    try {
       // Create a message.
       MimeMessage msg = new MimeMessage(session);

       // extracts the senders and adds them to the message.
       // Sender is a comma-separated list of e-mail addresses as per RFC822.
       {
          InternetAddress[] TheAddresses = InternetAddress.parse(Sender);
          msg.addFrom(TheAddresses);
       }

       // Extract the recipients and assign them to the message.
       // Recipient is a comma-separated list of e-mail addresses as per RFC822.
       {
          InternetAddress[] TheAddresses = InternetAddress.parse(Recipient);
          msg.addRecipients(Message.RecipientType.TO,TheAddresses);
       }

       // Subject field
       msg.setSubject(Subject);

       // Create the Multipart to be added the parts to
       Multipart mp = new MimeMultipart();

       // Create and fill the first message part
       {
          MimeBodyPart mbp = new MimeBodyPart();
          mbp.setText(Body);

          // Attach the part to the multipart;
          mp.addBodyPart(mbp);
       }

       // Attach the files to the message
       if (null != Attachments) {
          int StartIndex = 0, PosIndex = 0;
          while (-1 != (PosIndex = Attachments.indexOf("///",StartIndex))) {
             // Create and fill other message parts;
             MimeBodyPart mbp = new MimeBodyPart();
             FileDataSource fds =
             new FileDataSource(Attachments.substring(StartIndex,PosIndex));
             mbp.setDataHandler(new DataHandler(fds));
             mbp.setFileName(fds.getName());
             mp.addBodyPart(mbp);
             PosIndex += 3;
             StartIndex = PosIndex;
          }
          // Last, or only, attachment file;
          if (StartIndex < Attachments.length()) {
             MimeBodyPart mbp = new MimeBodyPart();
             FileDataSource fds = new FileDataSource(Attachments.substring(StartIndex));
             mbp.setDataHandler(new DataHandler(fds));
             mbp.setFileName(fds.getName());
             mp.addBodyPart(mbp);
          }
       }

       // Add the Multipart to the message
       msg.setContent(mp);

       // Set the Date: header
       msg.setSentDate(new Date());

       // Send the message;
       Transport.send(msg);
    } catch (MessagingException MsgException) {
        System.out.println("blows here");
        ErrorMessage = MsgException.toString();
        Exception TheException = null;
        if ((TheException = MsgException.getNextException()) != null)
         ErrorMessage += "\n" + TheException.toString();
         ErrorStatus = 1;
    }
    System.out.println(ErrorMessage);
    return ErrorStatus;
 } // End Send method

    public static void main(String args[]){
        SendMail.Send("smtp.gmail.com", "my_mail@gmail.com", "my_mail@gmail.com",
                 "try sending mail", "came? ","" ,null); 
    }


 } // End of public class SendMail