Would anyone be able to help me out. I have code which runs successfully in Eclipse. But when i create a WAR file and try to run it the Tomcat server is not able to find the JAVA files. Is there a big different running the code through Eclipse on Tomcat and running the WAR file directly on the Tomcat server.
Any help or advise to help me work out what is going on would be great appreciate, even if it is only a starting point for me to start investigating it myself.
Thank you for your time.
Tomcat can't do anything with .java files. You need to package the compiled .class files, not the source .java files.
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I fought for 8 hours yesterday getting my Java FX (11) Standalone JAR to work at all. I finally did, and now when I run it via java -jar myjar.jar (with path info for fx components), it at least "works" inasmuch as I can see my "own application's" error messages and message boxes lol.
This app needs to connect to SQL Server. It works FINE in IDE (IntelliJ). For JAR, I did not include the SQL Server driver as it is signed. No big deal - figure I'd just deploy it too and put it in the path. However, the JAR file can not "see" the driver (or the class - not sure) when run. Here is the info:
SQL Server driver is mssql-jdbc-8.2.2.jre11.jar
My connection Code is:
connection = DriverManager.getConnection(connectString); and connectString = "jdbc:sqlserver://localhost:1433;database=mydatabase;userName=myuser;password=mypword"
Again - this WORKS FINE in IDE. However, run from jar, it gets "java.sql.SQLException: No suitable driver found for jdbc:sqlserver://localhost:1433;database=mydatabase;userName=myuser;password=mypword"
I have put the mssql-jdbc-8.2.2.jre11.jar into the same directory as the jar. I have included it in the MANIFEST.MF with Class-Path: mssql-jdbc-8.2.2.jre11.jar and also tried it in a "lib" subdirectory from the jar file with Class-Path: /lib. Nothing Works! I just keep getting the "no suitable driver" error. The full manifest file looks like:
Manifest-Version: 1.0
Class-Path: /lib
Main-Class: com.product.Launcher
Here is the full call from command line that actually launches the app: java --module-path C:/Users/KMatson/Documents/JetBrains/openjfx-11.0.2_windows-x64_bin-sdk/javafx-sdk-11.0.2/lib/ --add-modules javafx.controls,javafx.fxml,javafx.graphics -jar myjar.jar This does run the app, but as soon as app tries to connect to SQL, I get the error.
Also tried the old-style Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver") to no avail even thought it should not be necessary, and isn't needed run from IDE.
This is driving me crazy and has taken WAY more time than it should. I'm new to all this, and hope it is something simple I am overlooking or unaware of. Any help MUCH appreciated.
OK - here is the (intermediate) answer that worked for me. Apparently, having the "--module path" declaration in the cmd line was overriding the Class-path in the MANIFEST somehow. Either that or something was - dunno - didn't think i had a "modular" project. I'm not building from Maven, and module-info is not active.
Anyway - I simply put the driver jar in the "module path" I use from cmd, and it worked. I'm now trying to figure out how to make this thing "double clickable" so i don't have to issue from cmd line or use a batch file.
I would like to download and install the Oracle DataModeler
But im stuck at the window that says:
"please specify the path to the java jdk home:_________"
What do i do?
Help would be greatly appreciated
You tell it where Java is installed. SQL Developer Data Modeler is a java application and can't run without Java.
If you're on Windows, you can download the package that includes the JDK. If you're not on Windows, install Java 8 (JDK), and then run SQL Developer. If it doesn't see Java, it will ask for the path. Give it the path from your install.
When I installed Datamodeler, the first time I launched the software it asked me for a java path. On my machine this was /usr/lib/jvm/java-1.8.0-openjdk-amd64. If you are running on a linux distro, there should be an opt subdirectory with a configuration file that you can edit manually:
/opt/datamodeler/datamodeler/bin/datamodeler.conf
try changing the last line of the file from
SetJavaHome ../../jdk
to
SetJavaHome /path/to/your/java (whatever your java path is)
I'm still having issues -- but this might work for you.
I'm here again with another case that is getting me out my mind.
So, this is happening, I'm trying to run an executable java class(.jar) as a Windows Service, and all my attempts failed so far. To make it a little easier, I turned my jar into a batch file, wich only executes the jar in background, here is the code:
start "" javaw -jar C:\LocalService.jar
The batch works fine. However I have tried to install this batch as a service by using the next line in cmd:
sc create "LocalService" binPath= "C:\LocalService.bat"
The Service installs correctly, but as soon as I try to start it, it pops up an error (The code error is 1053, says something about the service did not start correctly)
Also, I have try with a software called NSSM (non-sucking service manager) It installs fine too, but the service does not start either.
Do you guys know what am I missing?
By the way, I'm doing all this on Windows 7 Professional.
Thanks!
thanks for your comments
Both tools didnt work for me, sadly. However I was able to do it with a software called Java Service Wrapper. This is not a free software, so I needed to buy a license to get it to work.
The steps were simple:
1.-Create a folder with the name of the service, then inside add 4 folders: lib,bin,logs,conf
2.-On the lib folder you have to copy your jar and also the wrapper.jar and wrapper.dll (these last two are in the zip you download from the website)
3.-Copy 4 files to the bin folder: InstallApp-NT.bat.in, App.bat.in, UnintstallApp-NT.bat.in and wrapper.exe (this last one is the one that defines your license, if you can get a file wrapper.exe from somebody else who had paid a license it will work fine. These file also came in the zip from the website) Remove the .in from the batch files
4.-The most tricky step is this: You have to copy from the wrapper's folder called conf a file called wrapper.conf.in Remove the .in extension and edit it with a tex editor. The most important lines you have to edit are:
wrapper.java.command=C:\Program Files (x86)\Java\jre7\bin\java //Specify JRE Path. Will work with eviroment variable
wrapper.java.mainclass=org.tanukisoftware.wrapper.WrapperJarApp //Choosing this class means your are using a .jar file to execute when the service starts
wrapper.java.classpath.1=C:\LocalService\lib\wrapper.jar //This one is constant.
wrapper.java.classpath.2=C:\LocalService\lib\LocalService.jar //This is the path to your executable jar
wrapper.java.library.path.1=C:\LocalService\lib //Path to your own lib folder (the you created at the begining)
wrapper.app.parameter.1=C:\LocalService\lib\LocalService.jar // again the path to your jar
Then just execute the InstallApp-NT.bat and start the service and your are done
It worked to me with absolute paths, however according to documentation it will work fine with relative path too.
This is how I solved my problem and I hope someone with the same issue will find this helpful
See you next time!
I have a GWT based web application that I have previously uploaded to Appspot.
However now, I am getting this error:
Unable to update:
com.google.appengine.tools.admin.JspCompilationException: Failed to compile jsp files.
at com.google.appengine.tools.admin.Application.compileJsps(Application.java:583)
at com.google.appengine.tools.admin.Application.createStagingDirectory(Application.java:434)
at com.google.appengine.tools.admin.AppAdminImpl.doUpdate(AppAdminImpl.java:327)
at com.google.appengine.tools.admin.AppAdminImpl.update(AppAdminImpl.java:52)
at com.google.appengine.eclipse.core.proxy.AppEngineBridgeImpl.deploy(AppEngineBridgeImpl.java:400)
at com.google.appengine.eclipse.core.deploy.DeployProjectJob.runInWorkspace(DeployProjectJob.java:148)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
The application used JDK (not JRE)
There's a JSP file (dummy) on the war file
The application works in hosted mode
Do a clean build first. Alt+P, N in eclipse. If this fails, delete /war/WEB-INF/classes and try again. If this also fails, right click your war folder and select validate; this will tell you if there are any actual errors in your jsp files.
If this fails, your appengine jars may be corrupted. Try unzipping a fresh SDK and using it to deploy.
Also, have you changed java versions recently? Compiling JSPs requires JAVA_HOME points to a JDK, not a JRE. What is the result of echo $JAVA_HOME?
this thread will solve your problem
Cannot get the System Java Compiler. Please use a JDK, not a JRE
Other wise, you need to set your JAVA_HOME to point to your jdk folder and add javaw.exe path in your eclipse.ini
I downloaded Python and installed it, and when I go download GoogleAppEngine_1.2.0.msi and try to install it and I get this error:
This installation package could not be
opened. Contact the application
vendor to verify that this is a valid
Windows Installer package.
Am I forgetting something? I am assuming this is pretty simple.
I had the same error. The file downloaded by IE was about 190k and would not run. The file ought to be 2.7M. Firefox downloads correctly. Also IE will download correctly if you select RUN instead of SAVE. That is my experience and I now have the SDK installed. I hope this helps you.
Download it again and try to install the newly downloaded file. Maybe the file was damaged during download or not completely downloaded which can both happen sometimes.
If this does not help and the same error message appears you could control the checksum which should be
5ea87b8ed3011a5f55a9135c96abe96b6a6fd48b
for this file.
When you are sure that the downloaded file is ok, check if the version of your operating system is supported.
Maybe installing the Windows installer could help?
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=5a58b56f-60b6-4412-95b9-54d056d6f9f4
If not, try out on another machine or inside a virtual machine.