I'm newbee in web application deployment and stuff related to this. I have simple maven web application which works cool locally in my Eclipse & Tomcat9 server. Application has jsp file and main class, both try to call log4j2 classes like Logger or LogManager:
<% Logger.getLogger("bla").toString()%>
or in main:
private statis final Logger logger = LogManager.getLogger("blablabla");
Just in addition I call getPath() method on those classes and they show me my local maven repository.
After I deployed it on Unix server I get NoClassDefFoundError: Could not initialize class org.apache.logging.log4j.status.StatusLogger in browser and if I try to call it again I always get a bit different: NoClassDefFoundError: Could not initialize class org.apache.log4j.LogManager
Trying to execute main class through the PuTTY I get the same however after setting up a export CLASSPATH=$CLASSPATH:./WEB-INF/lib/* to the path with the libraries the program exetutes in console showing me enviroment CLASSPATH exactly as i've set before but continuing to not to work as web application through the browser.
I've tried to set CLASSPATH through the command above (startup.sh\setenv.sh etc...) but nothing. The command ...catalina.sh version shows me a CLASSPATH but app still doesn't work. I can only run a main class in PuTTY after manual setting up the CLASSPATH as I said above.
I've run out of ideas, probably you guys can give me some tips & hints about it? Maybe there is some script to set it each time starting the app. Unfortunatelly I'am not able to attache some code stuff.
The problem was related to the SecurityManager which was turned off on my local whereas it was turned on on a server. First I had simulated problem on my local, then I found out what permissions are missed debagging SecurityManager. I then added an VM argument -Djava.security.debug=access,failure to a run conf. Be carefull because of huge amount of output in console and better to log it in external txt file. After that I ran through the log.txt serching a word like "denied\failed\fail" and added necessary permission to a catalina.policy file.
Hope that will be helpfull for somebody.
Related
I have a basic question about deployment but I can't seem to find an answer on google...
I am working on a jakarta project and it's the first time I do the deployment.
Since I am using Spring-boot maven, I know there is an embedded tomcat that will launch with the jar.
My issue is, I don't know what url to use to check my project is working...
Before, I used the address http://localhost:9091/contextPath/endpoint, but now, I only get a whiteScreen...
So my question is, what url should I use ? Also, is there something else to do after packaging ?
Thank you for your answers.
EDIT:
Alright, so I tried actuator but that didn't help me...
With /actuator/mappings, I could see that my endpoints are correctly configured but when I use the executable jar, http://localhost:9091/contextPath/endpoint odes not work while it does if I compile with my IDE...
I don't know what url to connect to just to see the index... I'm using a very basic spring framework (boot and mvc) and my IDE is intellij community if this helps anyone
EDIT 2:
I tried to deploy the app on a local Tomcat9 to see if something would change but the connexion is reinitialized everytime I try to deploy a war using the manager, and there was no trace of error in the logs.
I tried using ./mvnw and it did work, endpoint and all, but it implies working with IDE environment
I tried using java (openjdk 13) and it compiled, but i couldn"t acces my own endpoint. I could still access the actuator endpoints so i don't know what to make of it.
Should the url be different depending on whether we are using IDE environment or just the jar?
EDIT 3:
Ok, I think have a lead but I have no idea how to resolve this:
when I began the web part of the application, I created a WEB-INF folder where I put all my jsp. My js and css files were in the resources/static folder. I tried once to put the jsp in the resources folder but it didn't work so I didn't push too hard.
Now, when I unzip the jar, i find my css and js files, but not my jsp.
When I unzip my war file, I have everything, but when I try to deploy it on a separate tomcat server, the connexion resets and I don't know why because nothing is written in the logs.
The issue then becomes:
Right now, I have
└──src
└──main
├──java
├──resources
| ├──static
| | ├──css
| | └──js
| └──template
└──webapp
└──WEB-INF
└──classes
└──jsp
What is the standard tree in intellij with jsp ?
By default Spring Boot apps are on port 8080.
Can you try http://localhost:8080?
Port can be changed in application.properties (or application.yml, application-profile.properties etc.) via server.port property (e.g. server.port=8888).
Ok, I managed to make it work.
I'm going to describe here everything of note that I encountered.
First, when I called my app to the usual url, there was no response (whiteLabel).
I added test logs and i found that I indeed called m controller.
I unzipped the jar and war i produced and came to the conclusion that the issue was architectural. I couldn't use jar, I had to use the war file.
I tried to deploy on a local tomcat server using the manager, but it always resetted the connection, so I took the manual approach - copy pasting the war file in the webapp directory.
Finally, the web pages were accessible in the browser.
Thank you for all the tips given during my research!
`http://endpoint:{PORT}/actuator/health` or `http://endpoint:{PORT}/actuator/status`
it should help but it must require spring-boot-actuator as a dependency in your pom/gradle file.
All I want to do is access a specific file in a Java class. I am using Spring Boot 2.0.0.M7. When I run from my development machine using mvn spring-boot:run then everything works well. In that case I am using:
File jFile = new File("src/main/resources/static/folder/fileName.txt");
When I deploy this to a Tomcat server (8.5) as a war, the file is put into:
WEB-INF/classes/static/folder/fileName.txt
I've tried everything I could find or think of, but always get an error of some sort, usually a file not found exception.
My most recent attempt was:
URL url = this.getClass().getClassLoader().getResource("fileName.txt");
File jFile = new File(url.getPath());
That produces a null pointer exception with url.getPath().
I have read about needing to access the servlet config, but couldn't ever understand that well enough to get it to work. Does anyone have a clear example so that I can access the file both from the development context and the production context? Thanks!
I am having three modules in my Maven project:
parent
rest-api # Spring REST API
web-client # AngularJS web client
application # Project to bundle it all up for a standalone
I am not sure if I have here an "elegant" solution so please hit me with a stick if that is complete garbage, but this is how it works - or how it's supposed to work:
rest-api
Module rest-api does simply offer the REST API and other core functionality - basically it is pure server code. It is a jar artifact.
web-client
To separate client and server code I am having the module web-client. It is a war project that hold the client webapp.
application
This module is supposed to glue it all up. It depends on rest-api and web-client. It does two important things:
It's pom.xml uses the spring-boot-maven-plugin to build a standalone runnable jar - my ultimate goal
It provides the main(String args[]) method that starts the #SpringBootApplication with SpringApplication.run(EasyModelAccessServer.class, args);
What I am currently able to is tell Eclipse to run this in a servlet container. The server boots up and I my two resources, the rest-api and the web-client working. Everything is fine so far.
The issue
What is not fully working is the standalone. If I package up the whole thing and run the server:
$ path/to/application: mvn clean package
$ path/to/application: java -jar target/application.jar
Only the REST API will work. The reason is because the web-client is not added or introduced as a web app to the Spring built-in Tomcat.
The question
is how I can make this work. There are two options which come to my mind:
Somehow sneak in the web-client.war file into the application.jar such that it is available as a resource and programmatically call tomcat.addWebapp("/web-client", "path/to/web-client.war") (or something like that) to load the additional service
Hope that the spring-boot-maven-plugin or another Spring Maven plug-in can do that for me and find somebody that links me to an example.
I've tried it with 1. but I didn't succeed to move web-client.war into application.jar but I am also not sure if I should actually do that.
FAQ
Q: "Why do you separate everything instead of merge all those modules into a server module where the Spring Maven plug-in would do everything for you out of the box?"
A: I really want to separate the client code from the server code. I could however merge web-client into application but last time I tried that I had 10 other issues why this did not work out so I decided to keep it that way and that it actually shouldn't be so hard to load an additional server resource.
Q: "Can I take a look at the project?"
A: Yes, you can. Just take a look: https://github.com/silentsnooc/easy-model-access Please forgive me that I am currently using tabs instead of whitespaces - I am going to change that as soon as I got everything up and running.
I have an application which is working fine on Websphere server (as war and Eclipse Project).
Direct deploy on Liberty through WAR is also working fine.
I was trying to deploy it on WAS Liberty through Eclipse project. There are no console errors but once the application loads, none of the following files are getting loaded in the web page: js, gif, css
Because of this the page is looking distorted and most of the functionality is lost.
Surprisingly there are some JSPs in the js folder and these are getting loaded, so looks like the folders are published properly. But for all the mentioned files (js etc), I get following error in the browser console: 500 (Internal Server Error) .
There are no errors and the server log is also clean.
My setup: WAS Liberty 8.5, RHEL 6.5. Eclipse Luna, WDT 8.5.5.2. Project having Eclipse structure, not maven.
I have tried both loose config and 'from workspace' settings
Edit1: I noticed that Spring beans are not getting initialized properly. Getting null pointer on applicationContext.getBean.
OK, found the problem.
As I guessed this was related to spring initialization, though the problem was more code related.
Due to wrong implementation of REST implementation, where the base path was set as root application path (“/”), rest API classes were getting instantiated on application load and were then making calls to code which was instantiating few Spring beans.
But at this point the Spring listeners had not fired, hence the appcontext was empty. Some of the base application object were getting initialized with empty beans and hence spring security context and related classes were failing to serve the application content properly. (Problem is spring related code is created by another team and we just get the jar, hence I am not even able to debug it properly, so I don't know where it was failing exactly)
The thing that makes it Liberty specific is: The same problematic code is working fine on Websphere full profile and Weblogic and even on Liberty if we deploy as WAR. Not sure what classloading difference is causing difference in behaviour.
Thanks to all who took time and efforts for replying.
I am facing the same issue using open liberty and Eclipse Krazo when the base path is
application path (“/”)
so i have changed the path as shown below
package io.openliberty.sample;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
#ApplicationPath("")
public class ConfigApplication extends Application {
}
Now the CSS and imgs are loading with no issues.
I have created a Dynamic web project which also uses drools for providing some functionality. When i put the WAR file in Tomcat7 and the server, the drools part does not work.
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
After this line which is first line relating to drools, nothing happens.
Is some configuration required to run my project containing drools 5.5.0 Final in the Tomcat7.
Please help me. I am badly stuck and I am new to drools.
You'll have to add some facts to the working memory and execute(fire) the rules. Check out these examples on GitHub
P.S. Probably not related to Tomcat in any way. Might be worth while to try getting the rules executed from command line app first.
You need to check all the dependencies that are added to your web application (WEB-INF/lib) make sure that drools has all the required deps there, because if not it will not be able to create the knowledge builder. Most of the time if it is failing is because that you forgot to add the deps in the web app.
The following project in GitHub is a web application, containing some REST-style endpoints for validating IBANs. It uses Drools 5.5 to perform that evaluation.
https://github.com/gratiartis/sctrcd-payment-validation-web/
It generates a .war which can be loaded into Tomcat, and could be a useful starting point. The knowledge base is wrapped within a Spring service:
https://github.com/gratiartis/sctrcd-payment-validation-web/blob/master/src/main/java/com/sctrcd/payments/validation/RuleBasedIbanValidator.java
Following through how that creates a knowledge base and session might help you see where your code is going wrong.
As a bonus, you can run it up in Tomcat using "mvn tomcat7:run" to test it out immediately.