[英]HTTP Status 500 – Internal Server Error While sending a mail from java mail
I am getting this error while sending out mail from my project.从我的项目发送邮件时出现此错误。 Applications I was using are:
我使用的应用程序是:
Here is the error这是错误
```Servlet.service() for servlet [controler.ForgotPassword] in context with path [/Banking_App] threw exception [Servlet execution threw an exception] with root cause
java.lang.ClassNotFoundException: com.sun.activation.registries.LogSupport
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1365)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188)
at javax.activation.MailcapCommandMap.<init>(MailcapCommandMap.java:179)
at javax.activation.CommandMap.getDefaultCommandMap(CommandMap.java:85)
at javax.activation.DataHandler.getCommandMap(DataHandler.java:167)
at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:629)
at javax.activation.DataHandler.writeTo(DataHandler.java:329)
at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:340)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1575)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2271)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2231)
at javax.mail.Transport.send(Transport.java:123)
at controler.ForgotPassword.service(ForgotPassword.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:830)
Jul 17, 2020 7:28:31 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [controler.ForgotPassword] in context with path [/Banking_App] threw exception [Servlet execution threw an exception] with root cause
java.lang.NoClassDefFoundError: com/sun/activation/registries/LogSupport
at javax.activation.MailcapCommandMap.<init>(MailcapCommandMap.java:179)
at javax.activation.CommandMap.getDefaultCommandMap(CommandMap.java:85)
at javax.activation.DataHandler.getCommandMap(DataHandler.java:167)
at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:629)
at javax.activation.DataHandler.writeTo(DataHandler.java:329)
at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:340)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1575)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2271)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2231)
at javax.mail.Transport.send(Transport.java:123)
at controler.ForgotPassword.service(ForgotPassword.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:830)```
Here is the java class from where it will send the mail:-这是发送邮件的 java class:-
"ForgotPassword.java" “忘记密码.java”
```@WebServlet("/ForgotPassword")
public class ForgotPassword extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public ForgotPassword() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
*/
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String email=request.getParameter("email");
HttpSession session1=request.getSession(true);
session1.setAttribute("email",email);
String fromEmail="abc@gmail.com";
String psw="XYZ";
String subject="DO NOT REPLY: Mail from Java Program";
String msg="Hi, Click this link to reset your password "
+ "http://localhost:3030/Banking_App/resetPassWord.jsp";
Properties prop=new Properties();
prop.put("mail.smtp.host","smtp.gmail.com");
prop.put("mail.smtp.port", 587);
prop.put("mail.smtp.auth", "true");
prop.put("mail.smtp.starttls.enable", "true");
Session session= Session.getDefaultInstance(prop
, new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(fromEmail, psw);
}
}
);
try {
MimeMessage mesg=new MimeMessage(session);
mesg.setFrom(new InternetAddress(fromEmail));
mesg.addRecipient(Message.RecipientType.TO, new InternetAddress(email));
mesg.setSubject(subject);
mesg.setText(msg);
Transport.send(mesg);
System.out.println("Mail Sent!!");
response.sendRedirect("/Banking_App/forgotPassWordSuccessful.jsp");
} catch (AddressException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}```
I was trying to send a link through this mail for resetting the password, where I used two jar files and deploy them in project我试图通过此邮件发送一个链接以重置密码,我在其中使用了两个 jar 文件并将它们部署在项目中
Thank you in advance.先感谢您。
Try adding this dependency and see if it works:尝试添加此依赖项并查看它是否有效:
Gradle: Gradle:
implementation 'com.sun.activation:javax.activation:1.2.0'
Maven: Maven:
<dependency>
<groupId>com.sun.activation</groupId>
<artifactId>javax.activation</artifactId>
<version>1.2.0</version>
</dependency>
You can also read this article for more info.您还可以阅读本文以获取更多信息。
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