I am using eclipse Luna. I want to read and write text files from my appengine and the path of those files I will set on run time from the local host, like "C:\Users\Public\Documents\newfile.txt" . Anyone give me a good code or link or a direction how to resolve this.
You cannot write to file system in AppEngine but you can use CloudStorage https://cloud.google.com/appengine/docs/standard/java/googlecloudstorageclient/read-write-to-cloud-storage. Duplicate of Does Google App Engine allow creation of files and folders on the server?
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I am trying to run the first example of zguide (zeromq). The project has two files, client and server, and I am doing this using vscode ssh remote on a RHEL7 machine.
Here is the structure of the folder and how it looks like in VSCode explorer:
ZEROMQ[SSH:remote_machine]
|_.vscode
|_tasks.json
|_c_cpp_properties.json
|_client.cpp
|_server.cpp
Once in a while I receive this warning:
Unable to watch for file changes in this large workspace folder. Please follow the instructions link to resolve this issue.
The instructions are of course telling me to increase the limit size which I don't think is the issue here with such a small project.
So, any ideas what's happening and how to resolve this?
Here's what I know:
When uploading files given by users, we should put them in a folder
outside the deployment folder. Let me call it D:\uploads.
We should (somehow) add that folder (D:\uploads) as a web app context.
Here's what I did:
I upload my files to the folder D:\uploads.
I tried adding the web app context as it's mentionned here by adding the following row to TOMCAT_DIR/conf/server.xml:
<Context docBase="D:\uploads" path="/uploads"/>
But that doesn't have any effect. When consulting http://localhost:8080/uploads/file.png or http://localhost:8080/uploads I get a HTTP Status 404 error.
So what I want to know:
What did I do wrong ? How can I add my upload folder to Tomcat?
Is there any better approach when it comes to uploading files ?
Because I'm wondering what should I change if I want to deploy my
application to another server where there's no D:\uploads.
Change the docBase attribute. Use D:/uploads (with slash) instead of D:\uploads (with backslash).
When dealing with files in Java, you can safely use / (slash, not backslash) on all platforms.
Regarding the differences you mentioned in the comments when starting the Tomcat from the IDE and from bin/startup.bat: It's very likely when you start the Tomcat from the IDE, it is not using the same context.xml your Tomcat is using. Just review the Tomcat settings in the IDE.
How to store uploaded files is a common topic at Stack Overflow. Just look around and you'll get surprised in how this topic is popular.
If you aren't happy enough in storing your files in D:/uploads or you'll have other servers accessing the files, you could consider storing them in some location in your network. Depending on your requirements, you can have one dedicated server to store your files or just share the folder which contains the files in your current server. The right decision will always depend on your requirements.
On my mac I mounted a shared drive using WebDAV by going to "Finder > Go > Connect to server".
Now, when I try to view the files using TextWranger or TextEdit I can see the PHP code that I want to edit.
However, if I try to use an IDE like NetBeans/Eclipse/TextMate and create a new project with my shared drive as the "Existing sources" folder I cannot see the PHP code.
Instead I see the HTML output of the files as if I were seeing them through a web browser. Also, if I try to view a file that isn't normally accessibility (a command line script) I see the output as if it were called from the command line.
But a weird thing is if I use TextMate to edit a single file from the shared drive I can see the php code I am trying to edit. It just doesn't work as a project.
Any suggestions or solutions on how I can use an IDE to edit files over WebDAV? And why do my IDEs display the content rendered, instead of the actual file on the file system.
I'm not a specialist at all but I seem to remember that WebDAV clients do send GET requests.
If I'm correct your server may not be able to discriminate between HTTP GET and WebDAV GET thus rendering your .php files. Why this would work that way when working with a project and another way while working with individual files is not clear, though.
Do you get rendered files when you add files to your project manually as well?
I have a Java rich client desktop app. that I want to distribute on some computers at work, but I've never done something like this before. People aren't too computer-savy at my workplace and since it is a student job, I won't be there for much longer and I'd like it if I could make my program easy to run by making it runnable when people double-click on it.
I also don't want to have to manually install a JRE to have it run. Basically, what I'd like to know is how to make my java application runnable easily by double-clicking (even if it's only on windows, it's okay). I'm pretty sure I'm going to need to package the correct JRE version alongside, but I don't know what's the correct way of doing this.
I read on some sites that you should not package a JRE along with your program because it makes people have multiple different versions, some of which are outdated, and it causes security issues, but this is not a problem in this case since the computers that are going to run my application are not connected to the internet and are only used to run this program anyway.
Somewhat related question: Since my application is currently an Eclipse project, I get my resources such as icons, images, SQLite database (for read and write), etc. using relative paths (e.g.: img/test.png).
Am I going to have to change any of those paths to have them keep working even while packaged?
What you're looking for is a JAR file. In eclipse, it's quite easy to make a Jar file. Specifically, you'll want to right click on your project, go to Export, and then select "Runnable Jar." Be careful with paths to folders. You may need to keep a resources folder next to the Jar file. You may need to provide some more specifics to get an exact answer on that. Typically, a Resources folder is located in the same spot as the JAR file (in the same folder on your computer).
A better option for easy install of a Java app. with a GUI is to launch it using Java Web Start. For the user, JWS is the 'one click' installation option that can (install & launch the app. then) add desktop shortcuts and menu items. A JWS launch would mean some more work for you, but it is a breeze for the end user.
To ensure a suitable JRE is present to run the app., use deployJava.js (see the JWS link for more details). The script would need to be reconfigured to get the JRE installer from your local network - the default is to get it from Oracle.
Most of the resources should be packaged in Jar files and supplied along with the app., but for the DB, use the JNLP ExtensionInstallerService to call the DB installer.
..Java Web Start is kind of a link (or I can make it a shortcut on the desktop) that the users will click to either install the JRE and run the program if the JRE isn't installed, or just run the program if the JRE is present on the computer.
The way it would work is to have a web page on the local intranet. When the user visits the page, the script checks for a suitable JRE.
If it is present, it writes the link to the launch file.
If there is no JRE, or the version is too low, it will guide the user through installing it (just a matter of them clicking 'OK' when prompted). Then it will put the link to the app.
I can then configure the link to grab the JRE from the server on our network.
That's the part where you need to reconfigure the script. AFAIR the script exposes an URL at which to look for JREs - that can be changed to point to a place on the intranet.
..So "Web" is only just in the name, the computers don't have to be connected to the internet to have this work, right?
Yes. JWS is a great launch technology for Java rich clients, but is a poorly chosen name.
To make the problem run by double clicking it you can distribute it as a jar file or a batch file to call the jar file.
For the installation part you can make a batch file that checks if java is present and then call the installer if it isn't.
Edit:
The batch code:
IF DEFINED JAVA GOTO ok
java-installer.exe
GOTO end
:ok
your-application.jar
:end
If you are finding it tough to implement the above mentioned methods. You can proceed with this simple approach.
Create a folder lib at a location. Place all the jars that your application uses into this. If you are able to create a jar for your application, you can very well place your application.jar into the lib folder too. Create a batch file at the same location that will contain the java command for your main class in it. The text within your batch might look something similiar to this :
set path="\lib\"
java -cp %path% package1.package2.MainClass
If you have any other dependencies, for ex: if you use images in your code under img/icon.jpg. Then you just have to shift the img folder to this location too.
Just zip these files using winrar and share it across. Running the batch file after extracting the zip would launch your java MainClass irrespective of the location in which it is placed in the client system.
PS : If you are unable to create a jar for your application and placing it in lib folder, just copy your bin folder with class files and paste it in the location and change the batch file accordingly to look for classes inside bin.
I have created a web part using VSeWSS 1.3. It creates a wsp file and my web part gets installed, everything works great.
I would like to also create a folder in the LAYOUTS directory of the 12 hive and place a couple files in there. How do I go about doing this? I know that I can manually place the files there, but I would prefer to have it all done in one fell swoop when I uses stsadm to install my solution.
Is there a best practices guide out there for using VSeWSS 1.3 to do this? They changed a bunch of stuff with this new version and I want to make sure I don't mess anything up.
You can create a new folder structure in your webpart project, like:
Templates/Layouts/CustomFolder and put your files in the CustomFolder directory and include them in your project.
When you go to the WSP View in Visual Studio, you can see in the manifest.xml that your files are being included in the deployment.
I have done this successfully on multiple projects now.
In case anyone is wondering, the VSeWSS 1.3 user guide is incredibly helpful. It is installed to the same directory as the tool itself, default in C:\Program Files\Microsoft SharePoint Developer Tools 9.0\VSeWSS13.CHM
You can see a working example with screenshots Here
A simple step-by-step tutorial for the above, along with deploy/retract scripts is here at Add New Files To 12-Hive Through A SharePoint Solution. Just follow the steps and in a few minutes you'll be able to add whatever you want to the 12-Hive!