I have created a simple Web Server application using Java APIs.
Web server is working as expected and I am able to get the HTML pages in the browser.
I am developing this Java App on a Windows Machine. For testing I am exporting my app as JAR and then testing it on Target Device which is a Linux Box. In my app I have created a "webroot" folder and I am storing all the HTML files, that web server needs to serve.
So when I create JAR file of the app then it has "webroot" folder with all the html files in it. When I run this application on Windows then I am able to get the html pages. But when I run this application on Linux box as a JAR then I am not able to retrieve html files. Also when I copy my "webroot" folder outside the JAR then it works and I am able to see the HTML pages getting delivered in the browser.
So is there any way I can access html pages which are in the jar file itself without copying them outside?
My Project Folder structure is as below:
/src
-com.myprj.server -> contains server Java files
/webroot -> all the html pages
/bin -> jar files as per the above package path
/myprj.jar -> Project jar file
So above jar file has the webroot folder. And from the code I am accessing it as "webroot/FileName.html". If I keep webroot as in the same folder as jar then it does work.
Without seeing how you're actually serving the content, it's hard to say what you're doing wrong, but you can always use Class.getResourceAsStream() to access the resources from the classpath. If you're running it as a jar file, then the contents of the jar file are included in the classpath too.
To serve content outside of the jar file, either include your "webroot" in the classpath, or create some kind of mechanism to first try the classpath and then an outside path.
Related
I have a peculiar problem. I am extracting the data from a database in the form of .csv file and then passing this file to d3.js for visualization.
The problem is, d3.js doesn't allow file:// based protocol (so I cannot give path to .csv file directly). The .csv file needs to be located on the server. But this file is generated on the run time.
I tried dumping the file in the same project folder, but as expected, the Eclipse doesn't take the updated file until next clean and build action.
Any idea how to work around this problem?
You need to place the file in the place where your application is deployed on Tomcat (e.g.: Tomact7\webapps\myProject...), not in Eclipse Workspace location, this way your js can access the File either by its URL or relative path.
So, the question is rather simple, and might be supid.
I have created a simple webserver, for which i need to deploy to a Azure, virtual machine.
I have created a jar file, and a bat file to start the server on the file.
In my creation of the webserver, i have a filehandler, and some html pages.
Is there any way to include the html pages in the final jar file for deployment ?
I am coding a website using java servlets and am using eclipse and tomcat. When I test it using localhost, it works fine. But when I am deploying it on my actual website, the directory structure is messed up and the files are not called properly.
My eclipse directory structure on localhost is
Project Name
.src/packageName/java files
.WebContent/HTML files.
When I make a call from the html files, I use the relative location and tomcat automatically knows to look in the src/packageName folder. For example, from the /WebContent/login.html page makes a onClick call as follows,
. This will automatically trigger the java file in /src/packageName/welcome
When I am deploying it in my actual website, the WebContent/login.html is throwing an error WebContent/welcome file is not found. How do I tell my website to search in /src/packageName folder?
Hmm...have you been sure to package the application as a war for deployment.
I am working on a dynamic web project in Eclipse with Tomcat 7. All of my html, css and javascript files are inside the WebContent folder in the eclipse workspace. All the java files are inside the src folder. All works well for simple programs. But now I want to read a text file from the java programs. I am not sure where to put the text file in the eclipse workspace so that it is correctly deployed to the Tomcat webapps directory inside ./metadata folder of eclipse.
You can use the ServletContext.getResourceAsStream() API.
An example can be found at this link . It suggests that the file should be kept in the /WEB-INF directory
put ur files inside webroot folder or outside webroot folder any where it is possible to read files .
inside classes folder is good because of default classpath for webapplication
I want to download an image file using a javascript client. Then I want to call the servlet in apache tomcat from the applet.
How do I host the file on tomcat. i.e. the same as hosting it in the 'docroot' folder on regular webserver?
Just drop the file in a subfolder of the /webapps folder. E.g. Tomcat/webapps/images/foo.png. It'll be available by http://localhost:8080/image/foo.png. Or if you already have a webapp, just drop it in the web folder (there where you also put your JSP files and where the /WEB-INF folder is also present).