Web Applications





Web applications are systems that run in browsers that perform functions normally associated with other client-based programs. One of the most commonly used web applications is email; instead of downloading individual emails to a local machine, the data is shown through a website. Other examples of web applications are collaborative systems like a wiki or an online game.

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I went through https://www.callicoder.com/reactive-rest-apis-spring-webflux-reactive-mongo/ and need clarifications on the below

In previous version we have to specify as below to return the output as Json

@RequestMapping(value = "/getString", method = RequestMethod.GET, produces = "application/json")

How to return the response as Json in new Spring 5 ?

In earlier version we can return a stream directly to the browser to process to the front end. either stream or base64 url. How to return a stream in the current spring 5 version

Where i can find out the syntax differences between spring earlier and spring 5 version

CompTIA Cloud+
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CompTIA Cloud+

The CompTIA Cloud+ Basic training course will teach you about cloud concepts and models, data storage, networking, and network infrastructure.

I am trying to put together some pertinent questions in regards to our corporate website, in terms of technology, hosting, support, roles & responsibilities etc. This is to assist in an independent review of the website by a 3rd party from both accessibility, performance, security etc. Can you suggest some relevant 'fact finding' questions that if you needed to understand the setup of a website, and its hosting, and all the various technology components used to develop and maintain the site. It is not something I have ever had responsibility for, so having some queries in order to get a better understanding would be most useful.
I am working to create a login prompt and I do not want the browser to offer the remember username and password option for the user. I am using a text box for the username field and a password box for the password field. Anytime I use a password box the browser prompts the option whether to remember username and password or not. I would like my users to type in those information each time they login. Is there any way I could use a text box to accept password and mask the characters in that textbox as a password character so that the browser does not prompt the remember username and password option?
i am looking into account lockout best practice configurations for failed login attempts/brute force. for one of our web applications the administrator has configured locking an account after 10 failed login attempts in a 60 second window. This seems a rather unusual setting based on other recommendations I have read on account lockout. Does anyone have a view if this setting poses a risk in anyway, or if any password attack tools can be configured to work around this setting e.g. a slower approach on how many it attempts each minute, and if so a more suitable suggestion of values?
Hi , I need an advise .
Do anybody know , what is the most popular architecture for .Net WEB application?
I mean before 2008 I use
ASP.NET 3.5  + Adjust  Toolkit cl [b]- front end ( view)
Typed DataSet  + Busies Logic CS classes middle tier ( model)
Public generic  cs class injected into Code Behind of every page was responsible  for binding / back binding
ASP.NET controls  to Typed Dataset  ( controles)
Public generic  cs class was responsible  to fill out Typed Datset data from SQL Server ( DAL)
Back end is always was SQL Server
Export / Import of the data was always via WEB Services  or sql jobs  which were run  from the last data received identity  (for performance point)
Right now so many Framework.

Do you   how use them  the most optimal way?
I mean what is the best way  to  implement
1)Most  efficient front end
2) Middle Tier with Business logic
3) Data  Access Layer
4) Data Exchange (Export/ Import) with   different clients
Please advice
why does experts-exchange.com use tracking cookies?
These are the instuctions to download a picture from www.instagram.com


I'm using a normal windows 10 desktop pc.

I tried the instructions from the link above in this section


It worked fine using downloadgram except for one thing, it only saves the first picture in the post.

Sometimes an instagram post has more than 1 pictures

To view the other pictures i just click the right arrows that show above the picture.

How do i download the other pictures?
With the method above It only lets me download the first picture.
So if a instagram post has 4 pictures in the post, how do I download the 2nd picture? or all 4 pictures?
Hi experts
I need a site or company to create video or flash to present an application on a seminar

I'm looking on expert suggestion. I found several options, but maybe someone will guide me for proper solutions.

I'm building severals web apps, and each apps, need a Help. I don't want spending time building an engine / framework for my help. Do you know an API / System I can integrate with easily with my web apps. Here's my requirements.....

  • Search, I want only to add a search box in my apps and this will call an API to search the "Online" system
  • Easy Interface for Creating Article / Help Page an Editor basically (can be a look and feel like WorkPress)
  • Possibility to add Image, Documents, Large Files (Video)
  • Online / Hosted preferably Offline option can also be consider
  • If possible, Security UserName / Password for users to access the Help (Not mandatory)

Some Ticketing System (ZenDesk, Zoho, ...) offert similar feature but it's not a full framework for help...

Anything exist on the market ?.... an Online Wikipedia with a Search API....

Free or Not, I want to check the options.

Thanks for sharing.
In a web application, I have a field in a table that contains the following (scrubbed):
what is this
You can mouse over STATUS to display a popup that shows "Approved", "Deferred" etc.

But, what do you call STATUS. It's not a link, and not sure if it should be called an icon. But, if "Icon" is appropriate, I'll run with it. Thanks.
Angular Fundamentals
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Angular Fundamentals

Learn the fundamentals of Angular 2, a JavaScript framework for developing dynamic single page applications.

Hi experts
I am searching for WebsiteBuilder applications like wix or any other
We are working on an e-commerce application. We are at the point of integrating Elasticsearch for the product search engine with Spring boot application with Spring data. We have tried different tutorials online (check links below) but they all doesn't run well. No indexes are added to the Elasticsearch.  We are using ES 6.3.1 and the maven dependency is as follows.


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Product Entity

@Document(indexName = "product", type="default")
public class Product {

    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long Id;
    private String Name;
    @Type(type = "text")
    private String Description;
    private String ShortDescript;
    private String Model;
    private String Brand;
    private String Sku;
    private String Isbn;
    private Integer Shipping;
    private BigDecimal SalePrice;
    private BigDecimal RegularPrice;
    private Integer Quantity;
    private Double Weight;

//other code here

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Product Repository

public interface ProductRepository extends ElasticsearchCrudRepository<Product, Long> {

    @Query("select p from Product p where p.supplier.id = ?1")
    public Iterable<Product> GetAllProductsBySupplier(Long id);

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We have installed kibana locally and have tested with test data and it works. But not with the Spring Boot application. Need your help. Thanks

1. https://www.baeldung.com/spring-data-elasticsearch-tutorial
I'm able to pass the query parameter successfully to the field however when the item is saved the record is not being saved to the list. What's interesting is that if I manually override the passed value by typing into the field on the form and then clicking save, the record is saved to the list .

We have a working example of this on the same site for a different list that we created about a year ago and does not have this issue.

Original Code Provided when a new form was created for the list in SPD:
<SharePoint:FormField runat="server" id="ff1{$Pos}" ControlMode="New" FieldName="AttachmentsID" __designer:bind="{ddwrt:DataBind('i',concat('ff1',$Pos),'Value','ValueChanged','ID',ddwrt:EscapeDelims(string(@ID)),'@AttachmentsID')}"/>
<SharePoint:FieldDescription runat="server" id="ff1description{$Pos}" FieldName="AttachmentsID" ControlMode="New"/>

Removed the above code and replaced with the following:                                                            
<asp:TextBox runat="server" id="ff1{$Pos}" Name="FileName" Text="{$AttachmentsID}" Value="{@AttachmentsID}" __designer:bind="{ddwrt:DataBind('i',concat('ff1',$Pos),'Text','TextChanged','ID',ddwrt:EscapeDelims(string(@ID)),'@AttachmentsID')}" Width="100px" Height="20px" BorderWidth="0" />
Hi Expert,

I'm getting below Oracle Web-logic application error could anybody please guide me how to fix it!

subsystem is initializing on Server WebWORKS6.>
####<Aug 2, 2018 1:09:38 PM GMT> <Info> <Store> <trpridrps1app6> <WebWORKS6> <[ACTIVE] ExecuteThread: '2' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1533215378092> <BEA-280008> <Opening the persistent file store "WLS_DIAGNOSTICS" for recovery: directory=D:\Manu\IDRPPSA\srvr6\config\JDADomain\servers\WebWORKS6\data\store\diagnostics requestedWritePolicy="Disabled" fileLockingEnabled=true driver="wlfileio3".>
####<Aug 2, 2018 1:09:38 PM GMT> <Critical> <WebLogicServer> <trpridrps1app6> <WebWORKS6> <Main Thread> <<WLS Kernel>> <> <> <1533215378108> <BEA-000386> <Server subsystem failed. Reason: java.lang.NullPointerException
       at weblogic.store.io.file.StoreFile.close(StoreFile.java:440)
       at weblogic.store.io.file.Heap.open(Heap.java:320)
       at weblogic.store.io.file.FileStoreIO.open(FileStoreIO.java:104)
       at weblogic.store.internal.PersistentStoreImpl.recoverStoreConnections(PersistentStoreImpl.java:431)
       at weblogic.store.internal.PersistentStoreImpl.open(PersistentStoreImpl.java:422)
       at weblogic.store.xa.PersistentStoreManagerXA.createFileStore(PersistentStoreManagerXA.java:117)
       at weblogic.diagnostics.archive.DiagnosticStoreRepository.getStore(DiagnosticStoreRepository.java:91)
       at …
hye, EE experts, i am thinking to get advertisement to my own web site that  has 6000 chinese visitor as  monthly in English site about taxi fares calculating , is there any idea or advice  for getting online advertisement affiliate commpany??
Another question related,  i have domain name  such as htttp:// www.fastfood.[city name]. How to and where to sell this domain name as godaddy recommended price 650 $ ??
Dear Experts

I am looking for a solution or tool  to collect information about specific keywords which could be related to specific technology or a product etc if configured those specific words so that I get an instant notification when someone mentions about it on different sites , social media mentions,blog comments/website on complete internet, it is not related to our company or brand in general it is for my interest on some technology related or could be anything, which all companies showing interest on it and what they are doing for it etc, this will help us to understand. I know ORM tools but it is generally used for brand reputation not sure if it serves this purpose, experts please suggest
I have done front-end Microsoft SharePoint development for about three years, creating sophisticated custom interfaces like dynamic Org Charts. Now I want to create my first stand-alone web application. It needs to support user accounts and subscription-based pricing. Traffic will be relatively low, maybe 10,000 potential users worldwide. My current skillset is below. I'm thinking about hosting on Heroku. Is React a good option for me? What backend should I use?

Proficient in: HTML, CSS, JavaScript, SQL

Experience in: PHP, Python, TypeScript, NPM, Gulp

Interested in: React
Hi, do you know how to make an offline dictionary to search faster? I am using offline dictionary in my website but when its searching for the meaning of a word, it takes too much time to find the meaning.

To clarify things, I did not obtain these from other offline dictionary softwares. Instead, I made the coding myself using HTML.
web applications vs. custom desktop software.  These are the two scenarios that I am posed with in designing an attendance/registration system for our organization.  Are there disadvantages to web application vs. a desktop software.  I imagine there is more power in the coding aspect of most programs compared to web application development.  I know its an abstract question, but I wanted to see what the experts have to say on this subject.   Is there really no difference?  The application I will need to design will register individuals, take their daily attendance, and then output statistics.  Also any ideas on how to best develop such a program may be appreciate.
Build an E-Commerce Site with Angular 5
LVL 12
Build an E-Commerce Site with Angular 5

Learn how to build an E-Commerce site with Angular 5, a JavaScript framework used by developers to build web, desktop, and mobile applications.

Simple question.

I am based in the US and have a hybrid Office 365 environment.  I have a user traveling internationally but cannot access his O365 webmail.  A colleague changed his O365 licensing location to the UK but I do not believe that we need to change the location for the user to access his O365 web applications.  Are there any O365 account modifications necessary when traveling abroad?  I do not think so but my colleague has me second guessing myself.
Can anyone please help?I have wasted almost a day on this,...Codebase I am working on has been analyzed by Checkmarks(i.e Its a tool which scan code for any security  issues), and it came back with a report containing a "Stored XSS" issue. The issue states:

Method retrieveDataTagsNames at line 47 of Correspondence
Template/sf/claims/api/correspondence/template/data/DataTagsNamesDao.java gets data from the database,
for the query element. This element’s value then flows through the code without being properly filtered or
encoded and is eventually displayed to the user in method retrieveDataTagsNamesDetails at line 52 of
Correspondence Template/sf/claims/api/correspondence/template/service/DataTagsNamesRestController.java.
This may enable a Stored Cross-Site-Scripting attack.

Code  for DataTagsNamesDao.java:-

public class DataTagsNamesDao {
    private static final Logger LOGGER = LoggerFactory.getLogger(DataTagsNamesDao.class);

    private NamedParameterJdbcTemplate jdbcTemplate;

    private Sql retrieveDataTagsNames;

     * This method retrieves data tags names and values  from a DB2
     * sequence object.
     * @return String (data tags names and values)
    @Transactional(readOnly = true)
    public List<DataTagsNames> retrieveDataTagsNames(String templateId) {
	try {
	    return jdbcTemplate.query(retrieveDataTagsNames.getSql(),new MapSqlParameterSource().addValue("templateId", templateId) 

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ImageHello Experts,

I have an Article Content Type that I'd like to display all of the Articles, on separate pages based on a Choice Field Item.  Any help on how I can achieve this is very much appreciative.
Using SharePoint 2013 On-Prem.  I don't need help on creating the content type, only on how to get them to display on their own pages that are page-able.  To also include the Title, an image, and part of the Body.
Hi, After logging into a site I select the page required it then goes through a load process in which several pages appear before the end page completes, however I would like to access the 2nd page that is part of the loading as it has more search facilities. Is there a way to allow me to step page by page through the loading process. If I am quick enough clicking with the mouse I can sometimes access the page but it is very random. I am using Chrome, the same load proces does'nt occur under MS Edge.

We have an intranet that's behind a username/password page and one of our biggest struggles is search. We've implemented a basic search tool and it does okay at best. If searching for the word book, it'll return pages with the word book in it. However, it runs into issues when using multiple words, quotations, and does not rank the results for the user. Our intranet is using php and CodeIgniter. I looked around at codecanyon.net for php search engine scripts, but nothing really stuck out to me. Does an expert have a suggestion on what a good search solution might be for an intranet?
I work as a translator, and sometimes a project contains a lot of difficult terms so I have to lookup each and every term in the documents. But when even Google searches don't render any results or only a few pages, it's really difficult to find a translation for such terms. Almost always in these cases, it's a technical handbok for some kind of machinery. Today I translate several handbooks for crushers, feeders and screens (cone crusher, jaw crusher, huck bolted inclined screen, scalping screen and a vibrating grizzly feeder).

So I was thinking of this solution, if it's viable:

I have a list of these difficult terms that don't give any search results on my national Google.se (advanced search settings: display results in my language Swedish) and can't find anything in my technical electronic dictionaries either. The best now would be if I could find other documents (pdfs, word documents etc.) and also websites in a selection of languages (I am proficient in German, Spanish, Italian, French, Norwegian and Danish) for these terms in this list by doing a deep web search.

Also, if I could find exhaustive definition context for these terms on English websites and in documents in English. The best is of course a comprehensive technical dictionary, but the one I found, McGraw-Hill Multimedia Encyclopedia of Science & Technology, seems to be out of stock everywhere.

But perhaps the most effective way would be to search for the hyperonym of all these terms in my term …

Web Applications





Web applications are systems that run in browsers that perform functions normally associated with other client-based programs. One of the most commonly used web applications is email; instead of downloading individual emails to a local machine, the data is shown through a website. Other examples of web applications are collaborative systems like a wiki or an online game.