Good morning in my timezone.
I have imported one Dynamic web project to my eclipse. I have downloaded the Tomcat server.
If I work without any IDE, I know that every libraries that we use in the project must be inside the lib folder in tomcat.
Folder structure : Tomcat\webapps\WEB-INF\lib
My question is, if I need a library (*.jar) should I put it directly in the lib folder or should I configure in the build path, adding it in the libraries tab?
Second question, my project steels have the red cross above the project name, but I do not see where the error is, in the src folder no class have any error and inside the Web Content folder there is not any cross, so how can I know where the problem is?
Thanks in advance.
Best regards developer community.
There shouldn't be any need for configuration, just copy them in the lib folder.
Make sure you have set the right jdk and the server libraries. right click on project -> build path -> configure -> libraries. if there is no tomcat runtime lib, you should add it.(I assume tomcat is embedded in eclipse. If not, right click on servers(next to console) and add the tomcat server.)
Related
I'm working on a JavaEE project, I already have the skeleton of an old project. All i have done is rename the project, packages and change the name in the project file (.project). But now when i'm trying to run, it returns error in the browser "The requested resource is not available". I've checked the web.xml and added a new jsp in vain it doesn't work. In the browser's address, it gives me the old name of the project(http://localhost:8061/smsgate/). I've tried a lot to fix the problem. what can i do? Is there any other file that i have to update and write in the new name? Please give me your ideas (knowing that i have to use that old project)
Do Project -> Clean in your workspace by selecting your current project. Also if using maven then right click your project and do maven -> clean.
Manually go to your target directory of your ear module and shift-delete everything inside your target and then rebuild your project to form new ear.
if you have configured the web.xml properly then strike your app url. Also ctrl+shift+delete your browser history and then check.
Why not create a new project using a maven archetype, just type in the console:
mvn archetype:generate
It will show you a list of available archetypes from the web, just choose one of them, for JEE6/JEE7 you could choose among:
1019: remote -> org.codehaus.mojo.archetypes:webapp-javaee6 (Archetype for a web application using Java EE 6.)
1020: remote -> org.codehaus.mojo.archetypes:webapp-javaee7 (Archetype for a web application using Java EE 7.)
If you agree with me, just type:
1019 or 1020 according to your needs and answer the questions like:
projectId:your-project-name
groupdId:com.yourdomain.reverse
version:1.0
when I use an external tomcat everything is just fine. but I need to deploy my project on internal eclipse tomcat server in order to be able to use DCEVM class hot swapping.
When I try to start tomcat server from within eclipse it says it is not able to find one of my service classes I mentioned in my spring security configuration file as a bean.
I also tried to add the project to tomcat class path but it did not solve my problem.
UPDATE
I found out the problem is because when I deploy my web project to eclipse tomcat server, no .class is copied to:
C:\Users\Meysam\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\villapweb\WEB-INF\classes
in fact, this folder contains my src/java/main package structure but no .class is copied in it.
lib folder is fine though (e.g. all dependencies of maven and other stuff copies in the path it is supposed to)
I think there might be something wrong with m2e-wtp plugin. I dont know what!
I am using eclipse 4.3 BTW.
SOLVED
I Solved this issue following these steps:
right click on project in eclipse > properties > project facets
in the right panel select runtimes and select your target server. Apply and ok.
in the server modules list right click on project module and click clean module work directory
right click on the server itself and you can clean both server and tomcat work directory one after another
if that didn't work, try project > clean and also toggle "build automatically" option under project menu item.
Thats it. tomcat now copies all .class files to the target server and you see no ClassNotFound exception as tomcat starts up.
[Copied to answer section]
I Solved this issue following these steps:
right click on project in eclipse > properties > project facets
in the right panel select runtimes and select your target server. Apply
and ok.
in the server modules list
right click on project module and
click clean module work directory right click on the server itself
and you can clean both server and tomcat work directory one after
another
if that didn't work, try project > clean and also toggle
"build automatically" option under project
Thats it. tomcat now copies all .class files to the target server and you see no ClassNotFound exception as tomcat starts up.
I've followed the steps on the answer but It still wouldn't work for me, so, besides doing these steps once, I've found that doing a refresh on the target after doing a clean install automatically triggers the "Republish" status on the server, so when the server is executed all changes on the compiled classes (new classes and changes to existing ones) are then copied to wtpwebapps when the server is started.
I had almost the same problem - one of my projects did not make it to the deployment area (its jar). What i did is 1) remove the appliction from tomcat 2) clean tomcat work directory 3) most important: project - clean - all. Then i added the application again and... problem solved
I had the same problem in Web Dynamic project converted to Maven project.
I found error in properties->Deployment Assembly->right panel.
There was source=src folder and deploy path=WEB-INF/classes. Classes couldn't be found by Eclipse.
Changed to source=target/classes.
I am using MAC with Eclipse Juno. My problem is When I create Dynamic Web Project in Eclipse and configure Java Build Path, all the external jars are getting added in the Referenced Library, rather than web-inf >> lib. So each time while running the project I have to manually copy-paste the jar to web-inf >> lib. Please let me know if i have to make any change in eclipse for this. Any help or suggestion would be appreciated !!!
You have to also export the libraries.
Project properties -> Java Build path. You'll see something similar to the screen shot.
Just check which library you want to export. It will be copied to lib folder
I've already tried the options "Add folder...", "Add Library...", and "Add JAR/Folder...", but it's not working this time -- I've done this several times before without any problems.
I've also tried to add the folder / JAR file (.war-file) manually to the projects properties in every thinkable way, but still no success.
And so far, Google hasn't helped either..
Any help would really be appreciated.
(This is for a Java Web project with JavaServer Faces, using NetBeans 7.1)
Solved: I never found out what caused the problem. I ended up re-installing entire NetBeans, and re-created (a thousand times) the project I was trying to import. And in the end, I got it working.
Put the JAR file in the WEB-INF/lib directory of your web project. All JARs in the WEB-INF/lib and all packages in WEB-INF/classes are automatically in the CLASSPATH.
Can you make "Hello, servlet" work? If not, why bother with JSF? Do a simple web app successfully and build up from there.
I had this problem with netbeans, but it seems like all the answers I found are for Eclipse (I guess am wrong) as I dont see any WEB-INF/lib directoryin NetBeans, though I have a WEB-INF directory.
so here what I did.
I remove the tomcat server on NetBeans, go to C:\apache-tomcat-7.0.30\lib , put the jstl-1.2.jar file their, restart NetBeans and add a new (Tomcat) server, create a new web app, and their, I could find the jstl-1.2.jar file in the Libraries > Apache tomcat.
and for unknown reason, it worked.!
I'm using Netbeans IDE for developing a web applications, and I've some JARs available in the application server which don't need to be in the WAR (but we need them to compile and run locally).
Is there an option in Netbeans to exclude the JAR file while building the WAR file?
Select the project in the Projects explorer window.
Pick the Project Properties item from the File menu (up in the menubar).
Select the word Libraries from the list on the lefthand side of the dialog that appears.
For each jar/library listed in the Compile-time Libraries list, uncheck those that do not need to be included in your war file.
I found the problem myself. I've all the libraries under my lib folder and added them to the project class path. Since the build is copying the entire content in the project, my library is also copying even though I've unchecked the package check box against the library.
So, don't put the library in your lib folder if you want to exclude that in the WAR built.
Thanks
Santhosh