Javax activation datasource ошибка

Same problem here. Unable to configure the rJava package. I had to send a lot of emails and I did a workaround: If you are using Linux, you can use mutt, a program to send emails (sudo apt install mutt).

Remember to change the config of muttrc in the following function:

password <- "xxx"
to <- c("m1@gmail.com","m2@gmail.com")
subject <- "test"
body.file <- "body.txt"
attach.files <- c("f1.png","f2.png")
CC <- c("a1@gmail.com","a2@gmail.com")
BCC <- NULL

send_email(password,to,subject,body.file,attach.files=attach.files,CC=CC)

send_email <- function(password,to,subject,body.file,attach.files=NULL,CC=NULL,BCC=NULL){
    ## sudo apt install mutt
    dotmuttrc <- tempfile("muttrc") ##"~/.muttrc"
    configdotmuttrc <- paste0(
        "set smtp_pass="",password,""n",
        "set smtp_url='smtp://me@mycompany.com@smtp.office365.com:587/'
set hostname = mycompany.com
set ssl_force_tls = yes
set smtp_authenticators = 'login'
set from = 'me@mycompany.com'n"
)
    cat(configdotmuttrc,file=dotmuttrc)
    command <- paste0("mutt -F ", dotmuttrc," -s '",subject,"' ")
    if(!is.null(CC)) command <- paste(command ,paste(paste0(" -c ", CC),collapse=" "))
    if(!is.null(BCC)) command <- paste(command ,paste(paste0(" -b ", BCC),collapse=" "))
    if(!is.null(attach.files)) command <- paste(command ,paste(paste0(" -a ", attach.files),collapse=" "), " -- ")
    command <- paste(command,paste(to,collapse= " "))
    command <- paste(command, " < ", body.file)
    system(command)
}

Issue

I’m trying to send Mail using SMTP on netbean when I get the error message:

run: Exception in thread «main» java.lang.NoClassDefFoundError:
javax/activation/DataSource at
SendMail.createMessage(SendMail.java:45) at
SendMail.main(SendMail.java:59) Caused by:
java.lang.ClassNotFoundException: javax.activation.DataSource at
java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:606)
at
java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:168)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
… 2 more
C:UsersAdminAppDataLocalNetBeansCache12.0executor-snippetsrun.xml:111:
The following error occurred while executing this line:
C:UsersAdminAppDataLocalNetBeansCache12.0executor-snippetsrun.xml:68:
Java returned: 1 BUILD FAILED (total time: 0 seconds)

How do i need to fix it?

(I use Apache NetBeans IDE 12.0;
Java: 15; Java HotSpot(TM) 64-Bit Server VM 15+36-156)

Solution

For classes such as javax.activation.DataSource you need the JAR file for the JavaBeans Activation Framework.

You can download the JAR from Maven Central here — click on the jar link there.

If you are using a dependency management tool such as Maven, Gradle, etc. then use the related configuration (also available in that same page). Using a dependency management tool is strongly recommended over just downloading JAR files one-by-one.

You should also consider replacing your javax imports with jakarta imports, since that is now where these packages are maintained, going forward.

If you do that, then you need to use the Jakarta Activation API, available here. For example:

<dependency>
    <groupId>jakarta.activation</groupId>
    <artifactId>jakarta.activation-api</artifactId>
    <version>2.0.1</version>
</dependency>

And if you do that, you should also replace JavaMail classes too — for example, you can replace this:

import javax.mail.Message;

with this:

import jakarta.mail.Message;

And use a Jakarta Mail resource, for example:

<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>jakarta.mail</artifactId>
    <version>2.0.1</version>
</dependency>

Answered By — andrewJames
Answer Checked By — Gilberto Lyons (JavaFixing Admin)

Hi everyone,

Thanks for reading this. I’ve compiled a simple JavaBean that uses JavaMail and JavaActivationFramework (javax.mail, javax.activation are imported). It is supposed to send mail, and it is very close doing so.

In my jsp page, I’ve included the following lines :

<jsp:useBean id=»sendmail» class=»jspbeans.SendMail» scope=»page»/>
<jsp:setProperty name=»sendmail» property=»host» value=»mail.mycompany.com»/>
<jsp:setProperty name=»sendmail» property=»to» value=»me@mycompany.com»/>
<jsp:setProperty name=»sendmail» property=»from» value=»me@hiscompanyl.com»/>
<jsp:setProperty name=»sendmail» property=»msg» value=»From my jsp page !»/>
<jsp:setProperty name=»sendmail» property=»subject» value=»An alert has been sent to you»/>
<%= sendmail.getMsg() %>

No problems there, my page displays the message, so the Bean is correctly included. But when I had the function call that actually sends the message :
<%sendmail.send()%>
I obtain an annoying error about the activation framework:

————————————————————————
java.lang.NoClassDefFoundError: javax/activation/DataSource
at jspbeans.SendMail.send(SendMail.java:85)
at jrun__process_lits2ejsp11._jspService(jrun__process_lits2ejsp11.java:201)
at jrun.jsp.runtime.HttpJSPServlet.service(HttpJSPServlet.java:43)
at jrun.jsp.JSPServlet.service(JSPServlet.java:110)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:226)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:527)
at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:451)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

jrun.jsp.runtime.UncaughtPageException: Unhandled exception thrown from /process_lits.jsp:57
at jrun.jsp.runtime.Utils.handleException(Utils.java:57)
at jrun.jsp.runtime.JRunPageContext.handlePageException(JRunPageContext.java:384)
at jrun__process_lits2ejsp11._jspService(jrun__process_lits2ejsp11.java:206)
at jrun.jsp.runtime.HttpJSPServlet.service(HttpJSPServlet.java:43)
at jrun.jsp.JSPServlet.service(JSPServlet.java:110)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:226)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:527)
at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:451)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
————————————————————————

All references to this error points to the CLASSPATH, but I’ve double checked everything. My OS is Windows XP, and my classpath is :
D:oracleora92jdbclibclasses12.zip;D:oracleora92jdbclibnls_charset12.zip;D:Javaj2eesdk1.4_beta2libj2ee.jar;D:Javajaf-1.0.2activation.jar;d:Javajavamail-1.3.1mail.jar

In JRUN console, I’ve added two new classpath entries for the default server, pointing to activation.jar and mail.jar… and I made a copy of activation.jar in about any pertient /lib folder I’ve found on my computer

Please help me, I’m so close to success!

Thanks !

Tom