Handling path variables and query params together in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to extract a path variable named 'id' in a Spring Boot controller method.

Spring Boot

@GetMapping("/items/[1]")
public String getItem(@PathVariable String id) {
    return "Item ID: " + id;
}

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

A/{id}

B/id

C{id}

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the curly braces around the variable name.

Using the variable name without slashes or braces.

The path variable must be enclosed in curly braces inside the URL pattern, like /{id}.

2fill in blank

medium

Complete the method parameter to extract a query parameter named 'filter' in a Spring Boot controller.

Spring Boot

public String getItems(@RequestParam(required = false) String [1]) {
    return "Filter: " + filter;
}

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

Avalue

Bid

Cfilter

Dparam

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different name than the query parameter.

Omitting the @RequestParam annotation.

The parameter name in the method must match the query parameter name, here 'filter'.

3fill in blank

hard

Fix the error in the annotation to correctly bind both path variable 'userId' and query parameter 'sort'.

Spring Boot

@GetMapping("/users/[1]")
public String getUser(@PathVariable String userId, @RequestParam String sort) {
    return userId + ": " + sort;
}

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

A/:userId

B/{userId}

C/userId

D/<userId>

Attempts:

3 left

💡 Hint

Common Mistakes

Using colon or angle brackets instead of curly braces.

Missing braces around the path variable.

Path variables must be enclosed in curly braces in the URL pattern.

4fill in blank

hard

Fill both blanks to define a method that handles path variable 'category' and optional query parameter 'page'.

Spring Boot

@GetMapping("/products/[1]")
public String listProducts(@PathVariable String [2], @RequestParam(required = false) Integer page) {
    return "Category: " + category + ", Page: " + page;
}

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

A{category}

Bcategory

Cpage

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatch between path variable name in URL and method parameter.

Forgetting curly braces in the URL.

The path variable in the URL must be {category} and the method parameter name must match category.

5fill in blank

hard

Fill all three blanks to create a method that handles path variables 'orderId' and 'itemId' and a query parameter 'status'.

Spring Boot

@GetMapping("/orders/[1]/items/[2]")
public String getOrderItem(@PathVariable String [3], @PathVariable String itemId, @RequestParam String status) {
    return "Order: " + orderId + ", Item: " + itemId + ", Status: " + status;
}

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

A{orderId}

BorderId

CitemId

D{itemId}

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names or missing curly braces in the URL.

Mismatch between method parameter names and path variable names.

The URL must have {orderId} and {itemId} as path variables. The method parameter for orderId must be named orderId.