I am trying to use an applet that is located in a jar that is located somewhere else in my system (not in the same project location as the web stuff). I know of a property called codebase which is pointing to where the web for look for the jar that has the applet class. This is the code that I put in, but can't get it to work...
<script type="text/javascript">
if (_app == "Netscape")
{
document.write('<object classid="java:UareUApplet.class"',
'type="application/x-java-applet"',
'name="UareUApplet"',
'width="1"',
'height="0"',
'type="application/x-java-applet"',
'pluginspage="http://java.sun.com/javase/downloads"',
'archive="UareUApplet.jar, dpuareu.jar"',
'onFMDAcquiredScript="onFMDHandler"',
'onEnrollmentFailureScript="onEnrollmentFailureHandler"',
'onImageCapturedScript="onCaptureHandler"',
'codebase="C:\Users\modonnell\Desktop\UareUApplet\UareUApplet\UareUApplet\Register\"',
'onDisconnectedScript="onDisconnectedHandler"',
'onConnectedScript="onConnectedHandler"',
'onErrorScript="onErrorHandler"',
'onLoadScript="onLoadHandler"',
'bRegistrationMode="true"',
'bDebug="true"',
'bExclusivePriority="true"',
'scriptable="true"',
'mayscript="true"',
'separate_jvm="true"> </object>');
}
If I paste in the jar into the folder of my web project, and take away the "codebase" declaration, the applet will work. But I don't want to have to paste in the jar after each compile.
I needed to add the path to the jar all in the archive tag. I needed to completely remove the codebase tag.
Related
I'm starting to work on an applet that will replace an existing one. Having never developed an applet before, I thought I'd get going with the popular HelloWorld example. I am able to run it a couple different ways: in the appletviewer, and also in a browser if I put the JAR file containing the HelloWorld class in the same directory as the HTML (i.e. http://localhost:8080/myApp). I also got it to work when I put the JAR in a directory called HelloWorld just below the myApp directory and specified the codebase parameter in the <applet> tag as HelloWorld. But when I try to specify WEB-INF directories such as classes or lib, I get a ClassNotFoundException. What am I doing wrong?
But when I try to specify WEB-INF directories such as classes or lib, I get a ClassNotFoundException. What am I doing wrong?
Those directories are only meant for classes/jars that are used in JSP and servlets (i.e. the stuff the server needs). The resources inside them are available to site visitors. In this sense 'visitor' means a User Agent (i.e. a browser) or a client side plug-in (such as Flash or the JRE).
You can confirm this for yourself by pasting the full URL to the Jar in the web browser address bar and hit 'enter' to browser to it. The server will give a message back to the effect 'forbidden'.
See also the WEB-INF info. page which expands:
WEB-INF is the name of a folder found in Java web applications. It is used to store deployment information such as the web.xml, required library files and compiled class files. It is normally not accessible from web. Any files which you want to put on war but do not want to make to public then web-inf is the place where you can keep those files.
I have a web-app with a lot of lib projects, which are common to another apps.
I'd like to put some JSP files in one of those libs and then make a <jsp:include... or <%include... But I'm not able to make it working.
Is there a way to achieve this?
If there is, which is better, to do a include directive (#include file..) or action (<jsp:include page...)?
Thanks
I know of only one way.
Keep the JSP in /META-INF/resources folder.
Create a 'lib' folder inside the WEB-INF folder in your WAR.
Place the JAR (containing the JSP in the /META-INF/resources folder) in the lib folder of the WAR.
In the main JSP where you want to include this external JSP residing in the JAR, use the following statement: <jsp:include page="/myJSP.jsp" ></jsp:include>. Note that the '/' is required in front of the jsp file name to make the container look for the JSP in an absolute path (and hence in the jar in the lib folder) rather than in the current path where the main JSP is lying.
This will surely work.
This is the structure of the JSP app on eclipse.Once I run it on eclipse using tomcat server(localhost:8090/index4.html) it works.On the index page i have to add details,this details are uploaded via the servlet as you can see above Java Resources->src->FileUPloadDBServlet(Also I am not sure if it uses this or it uses WEB-INF->src->FileUploadServlet below.)
In my index4.html the action is action=uploadServlet(no address given for it).This everything works on using eclipse.
But once I put the QMS folder(not WAR) from eclipse worskspace to tomcat ROOT,the index4.html works but the following action,i.e uploadServlet doesnt work(here I use the address localhost:8090/WebContent/index4.html)I dont have a web.xml.
Is that creating a problem?
Please provide me help.
You need to put your project folder or .war file in the
webapps folder of Tomcat directly not in ROOT folder under webapps.
Try to follow directory structure as follows
Photo Courtesy http://www.studytonight.com/servlet/steps-to-create-servlet-using-tomcat-server.php (Here you can also find more details on Servlet and JSP, as well as project structure)
Where you have your web.xml put into the WEB-INF folder under your application folder.
For java files you don't need the source files, the classes folder will have all the source folder (src) files compiled and ready to execute.
The lib will contain all the .jar files you need for your application to run.
Make sure you put web.xml file at proper place, because without it, application will not be able to run. Because as they say web.xml is Heart of the application.
Let me explain you the problem.
When we configure a dynamic java project to run on eclipse the server takes the just the stuff from webcontent folder and deploy it the wbcontent folder contains web.xml file which defines the url descriptor for servlet.
now when you copy the whole folder the server can not find the web.xml file which is a descriptor where it expects the file to be.
hope its clear comment for clarification
So I made an Applet (not JApplet) and proceeded to upload it to my website. I put all of my .class files into a package, exported the project from eclipse to a .jar, and uploaded that to the public_html folder of my website.
In my HTML code, I put
<applet ARCHIVE="BallShooter.jar" CODE="BallShooter" width=500 height=500> </applet>
However, it seems that I kept on getting the error "ClassNotFoundException"
If I reupload the .jar WITHOUT the package, it worked fine. Could somebody please explain to me how to fix this?
For those who are wondering, this is the structure of the things in the website
/public_html/myAppletJar/myPackage/a.class
/public_html/myAppletJar/myPackage/b.class
/public_html/myAppletJar/a.png
/public_html/myAppletJar/b.png
Check all these points:
if the applet class is BallShooter, and is in the package kikiotsuka, then its source code must start with the line package kikiotsuka;. The full name of the class is thus kikiotsuka.BallShooter.
in the jar file, you should thus have a directory named kikiotsuka at the root, and this directory must contain a file named BallShooter.class
since the name of the class is kikiotsuka.BallShooter, that's what the code attribute of the applet HTML element must contain: code="kikiotsuka.BallShooter" width=...
I'm working with a project that is setup using the standard Maven directory structure so I have a folder called "resources" and within this I have made a folder called "fonts" and then put a file in it. I need to pass in the full String file path (of a file that is located, within my project structure, at resources/fonts/somefont.ttf) to an object I am using, from a 3rd party library, as below, I have searched on this for a while but have become a bit confused as to the proper way to do this. I have tried as below but it isn't able to find it. I looked at using ResourceBundle but that seemed to involve making an actual File object when I just need the path to pass into a method like the one below (don't have the actual method call in front of me so just giving an example from my memory):
FontFactory.somemethod("resources/fonts/somefont.ttf");
I had thought there was a way, with a project with standard Maven directory structure to get a file from the resource folder without having to use the full relative path from the class / package. Any advice on this is greatly appreciated.
I don't want to use a hard-coded path since different developers who work on the project have different setups and I want to include this as part of the project so that they get it directly when they checkout the project source.
This is for a web application (Struts 1.3 app) and when I look into the exploded WAR file (which I am running the project off of through Tomcat), the file is at:
<Exploded war dir>/resources/fonts/somefont.ttf
Code:
import java.io.File;
import org.springframework.core.io.*;
public String getFontFilePath(String classpathRelativePath) {
Resource rsrc = new ClassPathResource(classpathRelativePath);
return rsrc.getFile().getAbsolutePath();
}
In your case, classpathRelativePath would be something like "/resources/fonts/somefont.ttf".
You can use the below mentioned to get the path of the file:
String fileName = "/filename.extension"; //use forward slash to recognize your file
String path = this.getClass().getResource(fileName).toString();
use/pass the path to your methods.
If your resources directory is in the root of your war, that means resources/fonts/somefont.ttf would be a "virtual path" where that file is available. You can get the "real path"--the absolute file system path--from the ServletContext. Note (in the docs) that this only works if the WAR is exploded. If your container runs the app from the war file without expanding it, this method won't work.
You can look up the answer to the question on similar lines which I had
Loading XML Files during Maven Test run
The answer given by BobG should work. Though you need to keep in mind that path for the resource file is relative to path of the current class. Both resources and java source files are in classpath