Discover the easiest way to retrieve a list from your Spring Boot endpoint with these must-see code examples

Table of content

  1. Introduction
  2. Prerequisites
  3. Example 1 – Using @GetMapping to Retrieve a List
  4. Example 2 – Adding Path Variables and Request Parameters
  5. Example 3 – Using ResponseEntity to Customize Response Objects
  6. Example 4 – Handling Exceptions
  7. Conclusion


Are you tired of feeling overwhelmed and bogged down by an endless to-do list? Do you believe that the key to productivity is to simply do more? Think again. In today's fast-paced world, doing less may actually be the secret to success.

As Tim Ferriss, author of "The 4-Hour Work Week," once said, "being busy is a form of laziness – lazy thinking and indiscriminate action." Instead of mindlessly checking off tasks, it's important to prioritize and focus on the few things that truly matter.

This concept is known as the "80/20 rule," or the Pareto Principle, which states that 80% of our results come from 20% of our efforts. It's time to stop trying to do everything and start focusing on the few tasks that will make the biggest impact.

In the words of Steve Jobs, "deciding what not to do is as important as deciding what to do." So, take a step back and evaluate your to-do list. What tasks can you remove or delegate? What truly matters in terms of achieving your goals?

By adopting a less-is-more approach to productivity, you can free up time and energy to focus on what truly matters. And who wouldn't want that?


Before diving into the code examples, let's first talk about a common misconception about productivity. Many people believe that in order to be productive, you need to do more. More tasks, more projects, more meetings, more emails.

But what if I told you that doing less can actually make you more productive?

As the famous business leader Warren Buffet once said, "The difference between successful people and very successful people is that very successful people say no to almost everything."

By removing unnecessary tasks from your to-do list, you can focus on the few things that truly matter and excel in them. This applies not only to personal productivity, but also to the development of software applications.

In the context of Spring Boot, this means simplifying your endpoints and removing any unnecessary complexity or features. By doing so, your code will be easier to read, maintain, and test.

So before we dive into the examples, remember that sometimes doing less can actually lead to more productivity. Keep this in mind as we explore how to retrieve a list from a Spring Boot endpoint.

Example 1 – Using @GetMapping to Retrieve a List

Are you tired of sifting through endless lines of code just to retrieve a simple list from your Spring Boot endpoint? Look no further than the @GetMapping annotation!

Using @GetMapping is the easiest way to retrieve a list from your Spring Boot endpoint. Simply add the annotation before your method, and specify the URL path you want to use. For example:

public List<User> getUsers() {
    return userService.getAllUsers();

This code block retrieves a list of all users from a UserService class and returns it in a JSON format. The @GetMapping annotation specifies that this method should be called when the URL path "/users" is requested. Easy, right?

But don't just take my word for it. As famous entrepreneur Tim Ferriss once said, "Focus on being productive instead of busy." Using @GetMapping can help you focus on the most important tasks at hand, rather than getting bogged down in unnecessary code.

So why waste your time on complex methods when @GetMapping is all you need to retrieve a list from your Spring Boot endpoint? Give it a try and discover how simplicity can lead to greater productivity.

Example 2 – Adding Path Variables and Request Parameters

Let's face it, we all have a to-do list that's a mile long. We're constantly adding tasks and deadlines, hoping to feel productive as we check off each item. But what if I told you that adding more to your list might actually be hindering your productivity? In the tech industry, it's easy to fall into the trap of thinking that programming success is all about doing more. We cram our schedules with stacks of tasks and goals, thinking that the more we do, the more successful we'll be.

But here's the thing – productivity isn't about doing more. It's about doing less, but doing it better. And when it comes to Spring Boot, that means simplifying your code to achieve your endpoint's goal with minimal lines of code.

Take, for example, adding path variables and request parameters to your endpoint. At first glance, it might seem like a small task that doesn't require much thought. But if you're not careful, you could end up with bloated and confusing code that's difficult to maintain.

So, how can you simplify this process and retrieve a list from your Spring Boot endpoint with minimal effort? Here's an example code snippet to give you an idea:

public List<String> example2(@PathVariable String pathVariable, @RequestParam(required = false) String requestParam) {
    // Your code logic here

Simple, right? By using the @PathVariable and @RequestParam annotations, you can easily retrieve data without adding unnecessary code. And if you're worried about potential errors, don't be – Spring Boot automatically handles any validation logic for you.

As the wise Albert Einstein once said, "Everything should be made as simple as possible, but not simpler." Keeping things simple and streamlined is the key to maximizing your productivity and avoiding burnout. So, next time you're tempted to fill your to-do list with a dozen programming tasks, pause and consider how you can simplify your code instead. Your mental clarity (and your code quality) will thank you.

Example 3 – Using ResponseEntity to Customize Response Objects

Are you tired of cluttered and unruly endpoint responses? Look no further than ! While some may argue that returning a simple List is sufficient, we know that appearances matter. And in the world of APIs, appearances can make or break a user's experience.

But why stop at just creating a pretty response? With ResponseEntity, we can customize even further. Need to add a specific status code? No problem. Want to include custom headers? Easy as pie. ResponseEntity allows us to tailor our endpoint responses to fit our exact needs.

As renowned author and productivity expert Tim Ferriss once said, "being busy is a form of laziness – lazy thinking and indiscriminate action." By using ResponseEntity, we're not just adding more tasks to our already overflowing to-do lists. We're streamlining and enhancing our endpoint responses, ultimately saving time and improving user satisfaction.

So take a page out of Ferriss' book and embrace the power of doing less. Let ResponseEntity handle the heavy lifting and watch your productivity soar.

Example 4 – Handling Exceptions

Dealing with exceptions is not a fun task, but it is a necessary one. In a Spring Boot application, you can easily handle exceptions by using the @ExceptionHandler annotation. Let me show you how.

@ResponseStatus(value = HttpStatus.NOT_FOUND)
@ExceptionHandler(value = { DocumentNotFoundException.class })
public final void handleDocumentNotFoundException(Exception ex, WebRequest request) {
    logger.error("Document not found");

This code snippet handles the DocumentNotFoundException exception and returns a 404 status code. What I love about this approach is that it keeps the code clean and organized. By centralizing exception handling, you avoid having to repeat the same code over and over again.

"When you don't create things, you become defined by your tastes rather than ability. Your tastes only narrow and exclude people. So create," said Why the Lucky Stiff.

Creating exception handling routines might not be the most exciting task, but it is an essential one. Save yourself the trouble of dealing with errors down the road and make it a habit to include exception handling in every Spring Boot application you build.

As famous American author and philosopher Henry David Thoreau once said, "It is not enough to be busy. So are the ants. The question is: What are we busy about?" When it comes to productivity, doing less can be more effective than doing more. Start by removing the unnecessary tasks from your to-do list, and you'll be surprised how much more productive you can be._


In , sometimes productivity can mean doing less instead of doing more. It's important to remember that a long to-do list does not necessarily equate to a productive day. By focusing on the most important tasks and eliminating unnecessary ones, we can actually increase our productivity and achieve better results. As Steve Jobs once said, "Focus is about saying no." So, next time you're feeling overwhelmed with tasks, take a step back and evaluate which ones are truly essential. By doing less, you may find that you accomplish more in the long run.

Have an amazing zeal to explore, try and learn everything that comes in way. Plan to do something big one day! TECHNICAL skills Languages - Core Java, spring, spring boot, jsf, javascript, jquery Platforms - Windows XP/7/8 , Netbeams , Xilinx's simulator Other - Basic’s of PCB wizard
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