Cannot resolve the problem for 2 days already. I have an executable jar, runs with double click. Simple JFrame form. I need to put it on a website, so clicking the link at website should execute my application (my jar).
So, working in NETBEANS, I've created a web application, used Glassfish server. I made a MyServlet.java, which just prints some lines:
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. You may use following sample code. */
out.println("<h2>gdfdddddddddddddd</h2>");
// Runtime.getRuntime().exec("java -jar JavaApplication131.jar");
}
}
In index.html this servlet is pointed out:
<body>
<h4>CLick33 MyServlet Page</h4>
</body>
So by clicking the link text appears. No problems with that.
Now I need somehow to also execute my jar. I tried inserting into servlet:
Runtime.getRuntime().exec("java -jar JavaApplication131.jar");
No help. It seems like my jar should be somehow updated with servlet class or connected to separate jar/war, but I cannot figure out how to do it.
Could someone assist please?
You are completely misunderstanding the concept of Servlet and your executable JAR in your question. What you are trying to achieve with your code is to execute the JAR in the context of the Servlet container. The security manager of the servlet container might have restrictions on executing external tools and thus might not execute your external JAR.
What you are asking for is actually to execute the JAR on the users client correct? If this is the case just provide a download link to the JAR and instructions as of how to execute it.
Or even better look into the Java Network Launch Protocol which is specifically designed to launch desktop applications downloaded from web resources.
https://docs.oracle.com/javase/tutorial/deployment/deploymentInDepth/jnlp.html
I want users not to download my jar. I wish to store it on server and just open it with a link.
Maybe you can provide some examples?
Related
I need your opinion on this: Is it possible to use enterprise library logging dll in the setup project?
Here's what I did:
I created a setup project which will call a windows form to install the database. When I installed the project, it did call the windows form. However, when I click on the "Install" button, it seems that there's a problem and I don't know where it is. Then another popup message is displayed which said that it cannot locate the logging configuration.
But the config file for the windows form is there which includes the configuration for the logging dll. I don't have any idea where to look into.
Please help me with this?
Below is the error message:
UPDATE
I observed that when I run the exe file as is, the enterprise library logging config works. But with the setup project, it does not look for it. Any help on this?
Below is the code for this:
[RunInstaller(true)]
public partial class IPWInstaller : Installer
{
public IPWInstaller()
{
InitializeComponent();
}
public override void Install(IDictionary stateSaver)
{
base.Install(stateSaver);
string targetPath = Context.Parameters["TargetDir"];
InstallDatabase db = new InstallDatabase(targetPath);
DialogResult dbResult = db.ShowDialog();
if (dbResult != DialogResult.OK)
{
throw new InstallException("Database is not installed.");
}
ConfigureFiles config = new ConfigureFiles(targetPath);
DialogResult configResult = config.ShowDialog();
if (configResult != DialogResult.OK)
{
throw new InstallException("Config files are not saved correctly.");
}
}
}
LATEST UPDATE:
I tried to set the value of a certain configuration to my messagebox. This is the result of it when I run the install project.
Is there a way to call my app.config in the setup project
There are at least a couple of things that can go wrong.
The app is not running as it would if you ran it as an interactive user. It is being called from an msiexec.exe process that knows nothing about your intended environment, such as working directory. None of the automatic things that happen because you run from an explorer shell will happen. Any paths you use need to be full and explicit. I think you may need to explicitly load your settings file.
Something else that can happen in a per machine install is that custom actions run with the system account so any code which assumes you have access to databases, user profile items like folders can fail.
Another problem is that Windows Forms often don't work well when called from a VS custom action. It's not something that works very well because that environment is not the STA threading model that is required for window messages etc.
In general it's better to run these config programs after the install the first time the app starts because then you are in a normal environment, debugging and testing is straightforward, and if the db gets lost the user could run the program again to recreate it instead of uninstalling and reinstalling the setup.
I'm getting a NoClassDefFoundError error when trying to compile or run a Jasper report.
2012-06-13 14:46:26,710 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/jahtest].[jahtest]] Servlet.service() for servlet jahtest threw exception
java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.xml.JRXmlDigesterFactory
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:207)
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:172)
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:156)
I have a set of java classes wrapped up in a war file and deployed in JBoss default/deploy folder.
I have the jasperreports-4.1.2.jar file in the JBoss default/lib folder so I can't see how there can be a classpath problem because all other jars in the lib folder can be seen.
My front-end app calls a HTTPServlet class which then uses reflection to call the class containing the Jasper code. Everything works fine up until the point where this line is called -
JasperDesign jasperDesign = JRXmlLoader.load(strCompiledReportFile);
The strCompiledReportFile is correct and exists. This all works when I run it through Eclipse, just not when called from my HTTPServlet class.
I'm at the point where I want to ditch Jasper because I've had so many issues with it so this is the last chance saloon.
Cheers for any help you might be able to offer.
I think you are missing few jars that jasper depends on at runtime. Check this thread and make sure you have those jars in your classpath as well.
I'm not sure if it would also apply to your case, but I had a similar problem recently, where after failing to load a font ("problem reading font data"), Jasper Reports would start giving spurious java.lang.NoClassDefFoundError for many of its classes; this problem was caused because java.awt.Font.createFont(int fontFormat, InputStream fontStream) tried and failed to create a temporary file. The error happened inside Tomcat, but not inside Eclipse; what was happening was that Tomcat automatically configures its JVM to point to its temp folder instead of the default one, and Tomcat's temp folder had been deleted.
If you are trying to integrate jasper with springboot application check whether the .jrxml is in the resources folder.
I have inhherited a vs2010 c# web project (asp.net). It has a web reference to a web service. There's been a slight change to the service - a new operation has been added. I'd like to update the proxy class so that i can call the new operation but i can't find the class. I seem to remember there used to be a "show all files" button in solution explorer that would reveal the proxy class but i can see no sign of that. Unfortunately, i'm not able to refresh the proxy by pointing it at the web service metadata wsdl because vs is no longer installed on any pc that can reach the web service. Anyone know where i can find the proxy class?
It doesn't matter you can't find it in Visual Studio - you can always locate a proper file in your filesystem, under the project directory.
Problem was, the app was running - doh!
Yes, you are right. There is a "Show all files" icon in the tool bar. It will only be available when you have a project selected, so you want to select the web service's parent project:
Expand the service reference and under it the file called Reference.cs is the proxy class.
You should NOT be hand editing this though. You should make the changes to the service and then regenerate the proxy using the Update Service Reference right click option. But then if you really can't do that as you say, then just hand edit the file. But beware that any changes you make will be lost if someone does regenerate it again in the future. Very Risky! (I prey you are using source control)
There is a WSDL.exe command line tool.
Copy and execute this command line tool in the PC where you can have access to the WebService, it will generates the proxy again and you can replace them with the files in your project.
http://msdn.microsoft.com/en-us/library/7h3ystb6(v=vs.80).aspx
from an ASP.Net 3.5 web application, I'm trying to log messages to the Windows EventLog.
I first tried with the EntLib Logginh block, but when this failed I tried with the EventLog class directly. It failed too. They do not throw any exception... the just don't write the message. EntLib did write the message to a file, but not to the Windows EventLog.
Here is my code:
public static void LogMessage(string title, string message){
//EventLog log = new EventLog();
//log.Source = LOG_SOURCE;
//log.WriteEntry(message, EventLogEntryType.Error);
//EventLog.WriteEntry(LOG_SOURCE, message);
LogWriter writer = EnterpriseLibraryContainer.Current.GetInstance<LogWriter>();
writer.Write(message);
}
I create the log & source in an installer class. Let me know if I should place that code here. The log is created correctly, since I can see it in the EventViewer. The source is created correctly, since I can see it in the "EventLog\MyLog" folder at the regedit.
I've been reading and there is an article stating following line could help:
EventLogPermission perm = new EventLogPermission(EventLogPermissionAccess.Administer, ".");
perm.PermitOnly();
but it didn't.
If it helps, my code structure is as follows:
Class library project (here is the LogMessage method)
Class Library project (here are the methods which catch exceptions and call LogMessage)
ASP Net web application project (web pages. This layer calls layer #2. Here is my installer class too)
Web setup project (this has custom actions pointing to web setup project output)
Could you please help to figure out what's happening???
Thanks
I found the following resource: "http://www.netframeworkdev.com/net-base-class-library/trouble-writing-to-eventlog-16723.shtml", so it seems it is not possibly to create custom logs from ASP... still investigating
Try giving the Network Service account the appropriate permissions
Easy way to handle developemnt/production URLs in flex air app? I want to point to my local box for testing, but when I launch I want it to automatically point to the production URL.
You can use namespaces and configure the current namespace (DEV/RELEASE) in your compiler options.
CONFIG::release
public function connect()
{
//connect to release url
}
CONFIG::dev
public function connect()
{
//connect to dev url
}
then define these options for the compiler:
-define=CONFIG::release,false
-define=CONFIG::dev,true
I suggest either using a configuration file or changing your hosts file to point domains to localhost or dev servers on your development machine. With the latter option you always use your production URLs in code, but your dev machine will resolve those domains to your local machine because it checks the hosts file first.
The best approach here is to externalize this information into a config file - perhaps an XML file - that is loaded via a relative url. The config file might like look this:
<config>
<serviceEndpoint>http://www.mydomain.com/services</serviceEndpoint>
</config>
Be sure to name your XML elements with valid ActionScript variable names or you may encounter some difficulty working with the file (for instance, E4X expressions may become difficult.
You can then use HTTPService to load "config.xml" which is placed alongside your application's SWF when deployed. This will allow you to repoint a SWF hosted on any domain to backend hosted anywhere else. This is especially useful if you are developing locally and are connecting to a shared development server.
Compiling this information into your SWF is very inflexible and a poor practice.
I typically will look at the url in the contentLoaderInfo object in either the Application (Flex -- http://livedocs.adobe.com/flex/201/langref/mx/core/Application.html#url) or root display object (Flash -- http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/display/LoaderInfo.html#url). If the url begins with "file", you know you are in your development/IDE, if it's "http", it's being run in a browser. If you're just working in the browser, you might also pass a parameter to the object that has something like
{
url: $_SERVER['SERVER_NAME'];
}
and perform some init/startup method to switch based on the path the app is running under.
I had this very issue in an AIR app I am writing that hits a Rails app via WebORB.
I just need to switch between http://localhost and http://fakeproductionurl.com depending on whether I was running in Flex Builder (via adl).
This is what I ended up using:
if (NativeApplication.nativeApplication.publisherID != "") {
return "http://fakeproductionurl.com";
}
else {
return "http://localhost";
}
It doesn't give you the ability to switch between 3+ different environments, but it's a very easy way to toggle between development / production environments.