@PostMapping for POST requests in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a POST endpoint using @PostMapping.

Spring Boot

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class MyController {
    @[1]("/submit")
    public String submitData() {
        return "Data submitted!";
    }
}

Drag options to blanks, or click blank then click option'

APostMapping

BRequestMapping

CDeleteMapping

DGetMapping

Attempts:

3 left

💡 Hint

Common Mistakes

Using @GetMapping instead of @PostMapping

Forgetting to import the correct annotation

The @PostMapping annotation is used to map HTTP POST requests to the method.

2fill in blank

medium

Complete the code to accept POST requests at the path '/addUser'.

Spring Boot

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {
    @[1]("/addUser")
    public String addUser() {
        return "User added!";
    }
}

Drag options to blanks, or click blank then click option'

APostMapping

BPatchMapping

CPutMapping

DGetMapping

Attempts:

3 left

💡 Hint

Common Mistakes

Using @GetMapping for POST requests

Using @PutMapping or @PatchMapping incorrectly

@PostMapping("/addUser") maps POST requests sent to '/addUser' to the method.

3fill in blank

hard

Fix the error in the code to correctly handle POST requests.

Spring Boot

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class ProductController {
    @PostMapping("/addProduct")
    public String addProduct() {
        return "Product added!";
    }

    @[1]("/deleteProduct")
    public String deleteProduct() {
        return "Product deleted!";
    }
}

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AGetMapping

BPostMapping

CDeleteMapping

DPutMapping

Attempts:

3 left

💡 Hint

Common Mistakes

Using @PostMapping for delete operations

Confusing HTTP methods and their annotations

The method deleteProduct should use @DeleteMapping to handle DELETE requests, not POST.

4fill in blank

hard

Fill both blanks to create a POST endpoint that accepts JSON data and returns a confirmation.

Spring Boot

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class OrderController {
    @[1]("/createOrder")
    public String createOrder(@[2] String orderData) {
        return "Order received: " + orderData;
    }
}

Drag options to blanks, or click blank then click option'

APostMapping

BRequestBody

CGetMapping

DPathVariable

Attempts:

3 left

💡 Hint

Common Mistakes

Using @GetMapping instead of @PostMapping

Forgetting @RequestBody for JSON input

@PostMapping maps the POST request, and @RequestBody tells Spring to read the JSON data from the request body.

5fill in blank

hard

Fill all three blanks to create a POST endpoint that accepts a JSON object, extracts a field, and returns a message.

Spring Boot

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.Map;

@RestController
public class FeedbackController {
    @[1]("/submitFeedback")
    public String submitFeedback(@[2] Map<String, String> feedback) {
        String comment = feedback.get("comment");
        return "Feedback received: " + [3];
    }
}

Drag options to blanks, or click blank then click option'

APostMapping

BRequestBody

Ccomment

DPathVariable

Attempts:

3 left

💡 Hint

Common Mistakes

Using @GetMapping instead of @PostMapping

Not using @RequestBody for JSON input

Returning the whole map instead of the comment

The @PostMapping annotation maps the POST request. @RequestBody binds the JSON to a Map. The variable comment holds the feedback comment to return.