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Questions tagged [jsp]

Java Server Pages (JSP) is used to create dynamically generated web pages based on HTML, XML, or other document types. JSP is similar to PHP, but it uses the Java programming language.

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1answer
22 views

Best practice to confirm unique username for user creation in JSP and JDBC?

First let me state the asynchronous approaches:- The user enters a character into the username form field. I create a connection to the database, use a prepared statement to confirm whether the ...
1
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1answer
85 views

Should this part of my web-app implemented on server-side or client-side?

I want to write an application which monitors a few URLs (like a couple hundred) of all branches of school. By monitoring, we mean that it sends requests to those URLs at regular intervals (Interval ...
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1answer
55 views

What method/ approach is used to query a user's page on a website using backslash + username? [closed]

I am working on a Servlet/JSP project, the website have users and I need to display a user's profile using the notation myDomain.com/Joe instead of myDomain.com/users.jsp?user=Joe. An instance of my ...
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votes
1answer
279 views

Implementing an SSO platform between different server languages and platforms

Our company uses a 3rd party platform to manage a pretty large portion of our business, but the platform is built on top of JSP and MySQL. However, our own products are written in C#/.Net. We're ...
0
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1answer
153 views

What are the drawbacks to SQL in JSP, PHP, or other server-side scripting?

I'm working on a code base that dates back at least 15 and possibly as much as 20 years, where the older code is still functional but includes thousands of JSPs full of Connection, PreparedStatement, ...
1
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1answer
170 views

Java PrintWriter vs JSP

I just want to ask an opinion, which are the best practice to use html between this two option: 1) Use JSP by creating html page there 2) Generate html using Java server side by using PrintWriter ...
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2answers
6k views

Connecting an HTML form to a Java program [closed]

I would like to create a front-end interface in HTML that interacts with a Java program via an HTML form. I would like to be able to publish this project on the Internet. In other words, the text ...
6
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2answers
8k views

Client-side Rendering vs JSP's for Spring MVC Front End Dev

Firstly, a note on the app I'm about to discuss: It's quite large, on the order of magnitude of a service app like Airbnb -- i.e., it's not just a static web page, it is a full web application. It's ...
18
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4answers
7k views

Why is JSX good, when JSP scriptlets are bad?

React.js provides JSX as an XHTML-like syntax for constructing a tree of components and elements. JSX compiles to Javascript, and instead of providing loops or conditionals in JSX proper, you use ...
1
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1answer
3k views

How to update ui lively without refreshing page [closed]

I am doing a web application using struts2 framework. After user login, I show a dashboard about the current status of the user. To show the Dashboard UI(JSP), I used to get the information from the ...
0
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0answers
96 views

Why are scriptlets considered bad practice in JSPs when much more popular languages such as PHP seem not have any problem with them? [duplicate]

Why is doing <% if(blahblah) { //do something } %> in a JSP considered to be bad practice when noone who writes PHP seems to have any problem with doing essentially the ...
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1answer
1k views

JSP in Javascript file or multiple AJAX requests

I've been thinking about how I want to load my data for some checkboxes in an AngularJS app. I'm generating multiple checkboxes based on 2 JSON objects that are currenty hard-coded in the a Javascript ...
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0answers
295 views

How and where to make global function file in jsp sevlet web application

I am making a website in Servlet&JSP. I am looking for good way to make a specific function file from where I can call and declare my common functions. If I made a java file function. Java, so is ...
0
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2answers
771 views

Classic ASP to Java UI Conversion

My question is based on a business model of a financial services organization that currently is supporting applications that are a hybrid mix of Classic ASP and Java, with some JSP’s already in some ...
0
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3answers
1k views

Conceptually, is the single page web app more efficient than the web app that loads pieces of the page for every page? [closed]

I searched a lot, but nobody seems to have explained this nor given a proper example. I have a page like this: My team says they want to design the code such that the Title section, Menu section ...
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1answer
183 views

JSP without .jsp-files?

I have a little project (a CMS) that was developed using .jsp-files in 2006. I moved in 2011 to JSF and had only one .jsp-file for the frontend. In 2014 I integrated the backend into the frontend ...
2
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1answer
193 views

Java App as Tomcat Service?

I currently have a basic j2ee website. Currently, a jsp frontend gets data from the backend (the java program, lets call it object "Score"). The backend gets this data from a web site. <% Main m =...
2
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0answers
76 views

Setting permissions issue for admins and lower users in project

I am working in a jsp project an got stuck in a big problem. My project consist of accounts table for super admin, reseller, admin and users for executives and manager mapped in the account ...
0
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1answer
918 views

Can JSP Expression Language provide type safety like scriptlets in Eclipse IDE?

Almost everywhere you can read that you should use EL instead of scriptles in JSP. And I agree that you should not use any JAVA code in JSP except for calling getter methods on model objects. This is ...
1
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1answer
576 views

JSP Include: one large bean or bean for each include

I want to refactor a webapp that consists of very distorted JSPs and servlets. Because we can't switch to a web framework easily we have to keep JSPs and Servlets, and now we are in doubt how to ...
3
votes
1answer
20k views

Why use JSP instead of servlets? [closed]

(Rewritten for reopening:) What are relative advantages of Servlets over JSP, or vice versa? Might JSP be preferred because it is easy to put code inside JSP, or Servlets because with them code can ...
0
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1answer
2k views

Trying to understand 3 layer programming [closed]

I am confused to understand the structure of a 3 layer programm. Where is good place for exceptions, entity and etc.? If I use MVC, in my UI model, how to transfer entity class to model class and etc.?...
0
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1answer
329 views

Controller JSP - no view

Most people say do not use JSPs. But what if I have a JSP that does not show anything, it only acts as a controller? Why would I do that? Because we do not need to redeploy complete webapp to make a ...
2
votes
1answer
11k views

Handling error message for a Spring MVC login form

This can apply to many error handling scenarios, but I'm curious about how to do it in a login scenario. Given this Spring controller method: @RequestMapping(value = "/account/login", method = ...
6
votes
3answers
1k views

How should I go about “overhauling” a large legacy application? [duplicate]

Possible Duplicate: I’ve inherited 200K lines of spaghetti code — what now? For my next project, I've been tasked with "overhauling" a large legacy web application with many parts. It is a JSP ...
4
votes
4answers
3k views

Why JSP over Servlets for view?

Although servlets does the task of sending the HTML code to the client programmers weight JSP over servlets for that. Even a JSP code is compiled into servlet before giving the response to the browser ...
4
votes
5answers
5k views

Building a website, want to use java [closed]

I'd like to make a simple-ish website that is essentially a small game. Key strokes are to be processed and sent to a server (already acquired and should support SQL and JSP, I believe) which then ...
4
votes
2answers
360 views

Can the overuse of custom taglibs disrupt the outsourcing of html designers?

Yesterday me and a friend were talking about the overuse of custom taglibs. We create taglibs for everything. We create taglibs in order to wrap jQuery UI elements (tabs, button, etc), and other ...
1
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1answer
636 views

myeclipse: can I customize templates like sysout in jsp

Myeclipse's java code templates like sysout make coding easier, and they can also be customized. But seems it's jsp editor has no such capability. Is it possible to create and customize some ...
4
votes
4answers
2k views

When are scripts inside HTML not considered a bad practice?

I am new to web development. While studying the Play framework and JSP, I noticed that they both give an option to place script (in jsp scriptlet) inside HTML, but in both books I am reading they both ...
3
votes
2answers
542 views

JSP, EL, JSTL: learning from a web designer perpective

I have two books geared toward learning JSP. From what I've read, one motivating feature/benefit is that it is easier for web designers (they apparently don't, as a rule, know Java) to work with ...
0
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2answers
250 views

How can I efficiently handle input data without a framework?

I am working on a very small project and my design would be using technologies such as JSP, servlets, and POJOs. I'm considering a workflow where a JSP page will receive input data, then submit it to ...
0
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1answer
669 views

Multiple possible jsp views for a request

I'm looking to offer the user some way of changing how a single page looks based on some pre-defined jsps. i.e. Two or more jsp's contain similar information, and would be backed by a single ...
5
votes
1answer
4k views

Is JSP a good alternative to PHP [closed]

I'm wondering is JSP a safe alternative to PHP? Some things I'm concerned about are cpu usage, memory usage, and security.
7
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2answers
2k views

How difficult would it be to migrate a Struts/JSP application to Groovy?

I have taken over development of a JSP/Struts application. Right now it's a bit of a mess, and I'm finding the JSP pages with Struts tags to be insanely verbose. Has anyone migrated a Struts ...
7
votes
2answers
29k views

Where can I host my JSP+Java Web application? [closed]

My web application is currently written in JSP/Java, using an Oracle DB. I develop on Windows, and I use JDeveloper (Oracle's eclipse clone) and I use JDev's integrated WebLogic Server. I want to go ...
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2answers
235 views

Why does EL have such low visibility?

Use of EL in JSP's is the proper way to code logic according to the Sun tutorials and samples, which also recommend against the use of Java scriptlets. Yet searching job listings for EL | "expression ...
23
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2answers
71k views

How can I debug a JSP?

I'm trying to edit a JSP for a project and I'm getting a NullPointerException somewhere in the JSP when it's requested from my server. My web server (JBoss) is reporting the exception, but it's ...
1
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3answers
505 views

Is this book a reliable source for beginning Java EE? [closed]

Core Servlets and Javaserver Pages: Core Technologies, Vol. 1 (2nd Edition) Can I rely on this book to learn Servlets and JSP,or is there a better book out there I should be reading instead?