无法运行具有.jar依赖关系的java应用程序-“错误：无法找到或加载主类”

Question

这是我所做的编译：

javac-cp“./javax.mail.jar”main.java

然后运行它：

这是我的完整代码：

package com.company;

import java.io.IOException;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class Main {
public static void main(String[] args) throws IOException {


    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");

    Session session = Session.getDefaultInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("[e-mail]","pass");
                }
            });

    try {

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("[e-mail]"));
        message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("[e-mail]"));
        message.setSubject("JavaMail");
        message.setText("Hi," + "\n\n This is a test");

        Transport.send(message);

        System.out.println("Sent!");


    } catch (MessagingException e) {
        throw new RuntimeException(e);
    }
}


}

Edit：还尝试从父目录运行（其中包含my com文件夹和java.mail.jar):

java-cp“./javax.mail.jar；。Company.Main

但我明白了：

错误：找不到或加载main类Com.Company.main

Answer 1

您应该通过以下方式从com的父文件夹编译它：

javac -cp "./javax.mail.jar:." com/company/Main.java

然后运行

java -cp "./javax.mail.jar:." com.company.Main

希望这有帮助。