My application is running on Tomcat 7.
I'm trying to read emails from inbox, and for that I use a normal Java class.
There is also a Servlet that calls the method readMails in the mentioned class.
Now I get an exception:
java.lang.ClassNotFoundException: javax.mail.MessagingException
...
I use IntelliJ IDEA with Maven, I changed the dependency of javax.mail a lot (see http://mvnrepository.com/artifact/javax.mail), but the exception keeps coming up.
I've also changed the Version of Tomcat (7 and 8), and the version of "Project SDK" (1.7 and 1.8) and "Project language level" (7 and 8).
I've read somewhere that there is a difference between reading emails via IMAP with normal Java application and running it on Tomcat.
In a previous project I read emails successfully with a normal Java application.
Can anyone help me with this exception?
JavaMail API is not included by default among Tomcat libraries.
Make sure that JavaMail dependency (mail-X.X.jar) is either packaged together with your application (in WEB-INF/lib) or is in a folder that Tomcat class loaders read (for example $CATALINA_HOME/lib), as described here:
http://tomcat.apache.org/tomcat-7.0-doc/class-loader-howto.html
Thanks, it works now.
I put the jar file (javax.mail: javax.mail-api-1.5.4.jar) downloaded by maven (.m2/repository/ ...) into WEB-INF/lib (in my project).
I also needed to put another jar file into WEB-INF/lib (com.sun.mail: javax.mail-1.5.4.jar) due to this exception:
java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger
javax.mail.Session.initLogger(Session.java:226)
javax.mail.Session.<init>(Session.java:210)
javax.mail.Session.getDefaultInstance(Session.java:321)
I added
<packaging>war</packaging>
to my pom.xml. This way maven puts the dependencies in the target folder.
Related
I have update my project to use Spring BOOT 1.4.3. The code compiles and runs without issues from Eclipse Neon 1.
But when I run from command line
mvn clean install -DskipTests
java -jar myweb\target\my-web-1.0-SNAPSHOT.jar
I get runtime error and tomcat is not starting
Caused by: java.lang.NoSuchMethodError: org.apache.tomcat.util.res.StringManager.getManager(Ljava/lang/Class;)Lorg/apache/tomcat/util/res/StringManager;
at org.apache.catalina.util.LifecycleBase.<clinit>(LifecycleBase.java:43) ~[tomcat-embed-core-8.5.6.jar!/:8.5.6]
Please can you tell why? How to find which tomcat is used at runtime, as my understand is that 8.5.6 is having compile scope(?)
Please help. If the suggestion is to use tomcat.version in properties of POM file or add tomcat-juli dependency, then please help me understand why it is required?
Impatient stackoverflow'ers dont just flog new comers only because you can do. You can easily ask if you want my POM, but I used just spring-boot-starter-web thats it.
For this kind of problem, it's often due to multiple jar having the same class inside your classpath, so :
Find where this class / method could come from, by opening the type popup (CTRL + SHIFT + T in Eclipse). It will display you every jar in your classpath that contains the class.
Open the class in each jar to see which one contains your method and which one don't.
Display the dependency hierarchy of your project with mvn dependency:tree
If the 2 jars are in your classpath, you might exclude the one that don't contain the method.
I just changed the output delivery as jar instead of war inside the pom.xml. But now, I've don't manage to load the login page. Not displayed. Cf. screenshot.
What should I do to make "One file delivery" ?
Thanks
Error loading login page
Resolved.
In fact, it is not needed to change to jar output. The generated war is already executable. (like jar command : java -jar your.war).
Maven spring boot plugin outputs 2 war files : xxx-0.0.1-SNAPSHOT.war and xxx-0.0.1-SNAPSHOT.war.original. The former contains tomcat embedd librairies (and more differences) and then it is the executable one. The latter contains old fashion war file : to be put into an external servlet container.
Thanks.
I've built a spring boot application and I'm trying to customize the banner to display the version of my application.
After reading the documentation, I've managed to create a banner.txt in the classpath and added the ${application.formatted-version} placeholder inside.
I've also managed to create a manifest file (using Gradle) containing the Implementation-Version.
Everything works fine when executing a jar file directly but when creating a war file, the banner is displayed but the version placeholder is not replaced.
After a bit of debugging, this method seems to be the source of the problem
org.springframework.boot.ResourceBanner.getApplicationVersion()
When running a war file, the call to
sourcePackage.getImplementationVersion() always return null
The manifest file is located at the root of the war file /META-INF/MANIFEST.MF
The application is deployed in a standalone tomcat 8.0.15
Any idea of what's wrong ?
It's a bug/limitation in Tomcat. It fails to find the /META-INF/MANIFEST.MF from an exploded WAR file which causes its ClassLoader to define the package with a null implementation version. This has been fixed in Tomcat, but the fix hasn't made it into a release yet. It'll be in 8.0.25.
There's some more information in this Spring Boot issue and this is the change that was made to Tomcat if you're interested.
In NB 7.2 i have ejb module managed by maven with several dependencies. I try to run it on Glassfish 3.1.2.2 but it seems like server doesn't resolve libraries on classpath. I think arguments in deploy command ("deploy?DEFAULT=..." - i'm not sure it is command) are correct - there are all libraries in this command, but during creating ejb server throws class not found exception - although this class is in library in deploy command.
It is possible to deploy single EJB module with dependencies without enterprise application?
Thanks for advice
There are a couple of mechanisms for deploying EJBs. If the EJB has dependencies and is used in a web application, check if it can be used in the EJB lite configuration. It is easiest to deploy it in a WAR file along with a web application. There is an article Introducing the Java EE 6 Platform: Part 3 that details a number of the specifics.
Alternatively, you may deploy it as part of an EAR file which will include the dependencies.
If the EJB must be used as a standalone EJB, the dependencies must be be in the server classpath, or repackaged in the EJB jar file. NetBeans 7.2.1 can do that for you.
So I have a grails 2.0.4 application that works exactly the way I want. I created the war file and deployed it to Tomcat 7. I'm getting an error saying that the application can't find the jar I'm using to connect to oracle (ojdbc6.jar). The jar is listed under mywebapp/WEB-INF/lib. WHY can't it be found?? Any help would be greatly appreciated!
The jar file should be in the toplevel lib directory of your project (or specified as a dependency in a repository), not webapp/WEB-INF/lib. Is the jar file actually inside the warfile? You can test this by opening the war as a zip file, or by running jar tf target/mywebapp*.war and looking for ojdbc6.jar. If it is, it should get deployed and you should see it in tomcat7/webapps/mywebapp/WEB-INF/lib.
The default environment for grails war is production instead of development. Make sure you've got the production data source configured correctly in grails-app/conf/DataSource.groovy