How to set up a basic Java EE Workspace with JSP forms and servlets in my particular setup? - workspace

I'm on extended medical leave from my job and practicing at setting up my own workspace at home without the assistance of workspace setup documentation. I know I need a web.xml file somewhere in this structure but I'm not sure where it goes in the Web Content.
I'm only looking to create an input text field to enter a number and the user receives a number back from the tomcat server, but I don't know the proper place to create the Servlet java file in this particular folder structure.
My project has the standard Java Resources, Javascript Resources, build, and WebContent directories so far.
I've tried to Google for a similar project setup but no Youtube or Google workspace tutorial has shown the same workspace setup that I have. Does anyone know of one?
Yours Truly
(As Humanly Possible)
cnight62

Related

How can I create Liferay web content structure's outside of Liferay configuration?

I'm very new to Liferay theme development and i'm trying to find the most optimal workflow for development.
So I've been experimenting with creating Web Content Templates and Web Content Structures within Liferay CMS configuration.
What I would ideally like to do is create my view "Web Content Structure" outside of Liferay configuration and instead have it as a view/template inside my theme files so that I can have my code peer reviewed and version controlled in Bitbucket.
Is this possible?
Alternatively is there a way to output the values of a given web content instance within my theme?
I'm building a theme for Liferay 7 by the way.
Thanks in advance
Richard
You can copy and paste the structure when you create them form the LFR editors into your source code repository.
Also if you know how to define the JSON you can do it straight in the file. The free market templates are even easier to edit in file format. When you're done, you need to go and upload the artefacts to the portal via the editor/file upload option.
You can't stick it into the theme because that approach would not allow you to do updates.
You can search for a community plugin or write your own one that would do structure/template updates during deploy.

Automatic way of export / import pages from liferay

I have created portlets for liferay and prepare couple of pages. Now I want to create installation script, which create pages definition in customer liferay server. I know that pages export/import is possible using LAR file, but this could be done only manualy, or using remote publishing which i am not able to do.
I was searching on net and found ddm tool. Which should be able to do that. Unfortunately i'm not able to get it work as it export only web content, blogs, wikis, etc, but not pages with portlets. It is probably because one of the condition is "Every Template must be assigned to a Structure. Don't create any templates on the Liferay server which does not have a structure connected to it.
". But how can I assign page to structure ? Cant find anything.
Or is there any other option for automatic page creation, which could be used ?
In case you created a custom theme, you can easily use the "resources importer" to create an entire site via the "sitemap.json" file (define pages: choose layout, assign portlets to the columns, ...). You can also export existing content as xml from the current instance and import them via the theme. Same thing for web content structures and templates.
for more details: https://dev.liferay.com/develop/tutorials/-/knowledge_base/6-1/importing-resources-with-your-themes
Unfortunately theme is produced by another supplier, so this solution isn't suitable for me.
at the end i find working solution which consist of following steps:
create plugin hook
in hook setup upgrade process
in the upgrade process create pages with appropriate layout, friendlyUrl, etc. All these is possible to do using liferay api
Don't have enough reputation, so at least two links
https://www.liferay.com/de/web/james.falkner/blog/-/blogs/7cogs-is-dead-long-live-7cogs-
https://github.com/azzazzel/liferay-official-plugins/tree/master/hooks/sevencogs-hook/docroot/WEB-INF/src/com/liferay/sevencogs/hook/upgrade

Liferay create site / page programmatically

I have been using Liferay for work for 2 weeks. I noticed that it's a bit difficult to find good documentation and tutorials.
Until now I created pages from the web portal. After I create them, I drag and drop portlets. I don't really like this approach, I would prefer to use a coding approach. Is there a way to create a website or page programmatically by defining a project as I do to create portlets?
Moreover, I am using Liferay with WebLogic 10.3.6. I want to know where liferay puts pages I created via web-portal on the file system. I suppose that a file, or something similar, is created when I declare a new site on the Liferay web-portal.
Thank you all,
Marco
Yes Liferay has it's Database, all data of any Liferay object is stored in the database and / or on the file system depending on your configuration.
However, one of the functionality of Liferay is to let you create pages / sites through the UI. As documented in the Java Portal Specification and Liferay Server Documents your approach to create pages in an alternative way is possible but it is part of Liferay's Portal Services. You can use Liferay's Service (HTTP REST) API to call the related service. To access those APIs you need to configure your Liferay Server.
In case you want to do programmatically you still need to configure, enable and call those external HTTP services from your code. You should not create Liferay Objects from your own code hosted as an extension inside your Liferay Instance as that will result inconsistency in your Liferay Database / filesystem. (As in case of page creation Liferay creates a set of other related objects in it's database / filesystem.)
In your liferay bundle you will find two plugins of interest.
First is resources-importer-web for which description says
The Resources Importer app allows front-end developers to package web
content, portlet configurations, and layouts together in a theme
without saving it as a compiled .LAR file thereby allowing for greater
flexibility in its usage between Liferay Portal versions.This app will automatically create associated content when other
plugins are deployed that are configured to make use of the Resource
Importer app.This app installs as a Liferay service.
Second is welcome-theme which declares resources to be created by resources-importer-web. This on should be example how to create your own. Take a look at
welcome-theme\WEB-INF\src\resources-importer\*
welcome-theme\WEB-INF\liferay-plugin-package.properties
This feature is described at importing-resources-with-themes
As mentioned by gabor_the_kid, Liferay stores all objects in its tables. For example, User related objects would be in user table. Liferay exposed services or API's to change the default/to add new behaviors by program but not easier than achieving it through UI. Also maintenance should be considered for going program way of creating pages or layouts etc.
You can describe your changes using xml and use the Liferay Portal DB Setup core to create the changes in DB.
The library defines the list of available xml configurations.

disallow access of internal files in liferay

In liferay I have
--tomcat
--webapps
--myimages
--my-portlet
So using code in my-portlet I have given links to given file in myimages folder for a specific user. Link would be
http://localhost:8080/myimages/User1.jpg
Problem Statement: I have to restrict a user (rather than defined role in liferay) so that s/he should not be able to access any of the files in myimages folder as s/he user hits on direct above link.
What I have tested:
I have checked .htaccess file will NOT be useful since liferay has
tomcat rather than apache server.
Created a filter class by which I can intercept any request made
should process through.
openLDAP can not use since we are having separate authentication
mechanism.
So if anyone has idea how to deal with this security issue, please suggest me.
URLs that are resolved through individual webapps (like myimages), thus not through Liferay, will not have any idea of the user that accesses Liferay: They'll be well shielded from the other (and in this case totally unrelated) webapplication Liferay.
What you can do is to provide these files through portlet plugins and serve the images through resource-URLs in the portlet. This properly goes through the portal context (in fact, the URLs will point to Liferay, despite the implementation in a different webapplication) and you'll be able to check the permissions of the current user. Then just read the file and pipe it into the ResourceResponse's output stream.
If the files indeed are static web resources, you might want to put them in myimages/WEB-INF/images - as tomcat will refuse to directly serve everything under WEB-INF, but your portlet will be able to access these files.

Setting up a new website with Liferay Portal - basic steps?

I know this is not specifically a programming question, but programmers will often have to do this work.
How do I create a website with Liferay portal - the docs are pretty light on this fundamental issue and are all for version 4.4. I am using version 5.2 and the docs don't seem to be relevant.
Do you know what the basic steps are. So far I have logged in as the bruno user and can see the 7cogs website and edit it. But I now need to create my own website (for my company) and be able to develop portlets to add to the parts of the page.
Further I notice that the docs talk about doing work in Eclipse. If our website is all static HTML, (the reason we want liferay is mainly so that we can edit content items using its content management tools), then will there be any need for Java dev, or will it all be drag n drop and clicking to get setup. Any guidance will be much appreciated.
Liferay can be used as a simple CMS, without much Java knowledge : creating, editing and positioning of web content fragments are drag'n'drop and use of the included rich text editor.
But to start using Liferay for your company, there are two main steps : a technical configuration (database, etc.), and a look'n'feel customization.
The technical part
First of all, you should get rid of the 7cogs website : this is called a hook in the Liferay wording. To do that, if you are using Tomcat for the application server, just delete the 7cogs directory as stated here.
You can now create the configuration file for your installation : it's a simple text properties file, named portal-ext.properties and placed in the webapps/ROOT/WEB-INF/classes folder of your tomcat installation.
This file handles most of the configuration of the Liferay portal, for example :
the name of your company
if you want to display a terms of use page on first login
if you want anybody to be able to create an account on your portal
the database where the data will be stored
To do this, the properties in the portal-ext.properties override default properties found in a embedded portal.properties file located in the jar file portal-impl.jar, in the webapps/ROOT/WEB-INF/lib directory. Just unzip the jar file in a temporary folder to access the portal.properties file.
A sample portal-ext.properties file :
company.default.web.id=yourcompany.com
terms.of.use.required=false
company.security.strangers=false
jdbc.default.driverClassName=com.mysql.jdbc.Driver
jdbc.default.url=jdbc:mysql://localhost/lportal?useUnicode=true&characterEncoding=UTF-8&useFastDateParsing=false
jdbc.default.username=root
jdbc.default.password=root
Once done, you can startup your application server. As the default admin (named test, something you can change in the portal-ext.properties file), you can access to the centralized web "control center", located in the "dock" (the strange menu labelled "welcome Test" in the upper right part of any page once logged in).
I would advise you to read the administration guide, useful for most administrative tasks.
The "branding" part
Liferay uses "Themes" to automatically decorate the portal pages (logo, navigation, portlet borders...) using images, CSS, Javascript (JQuery) and the templating language Velocity. The themes are bundled in a .war file, like a standard web application, and deployed on the fly either via the control center or by dropping the file in the deploy directory of the server.
Liferay can use several themes at the same time, one for each community (a group of pages, users and content) for example.
Creating your own theme can be done afterwards, using the "Plugins SDK".
The Wiki, forums and blogs can be very useful.

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