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Spring MVC - Get Probability of a Gender by Providing a Name using REST API

Fetching the probability of a gender based on a name using a REST API in a Spring MVC application is similar to the approach for fetching exchange rates or any other data from an external API.

For the purpose of this guide, let's assume there's a hypothetical API endpoint https://api.genderprobability.io that returns gender probability based on a provided name. Here's a basic guide on how to do it:

1. Set up Spring Boot with Spring MVC

Start by adding the necessary dependencies to your pom.xml:

<dependencies>
    <!-- Spring Boot Web Starter for Spring MVC -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    
    <!-- For calling REST APIs -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>
</dependencies>

2. Create a Service to Fetch Gender Probability

@Service
public class GenderProbabilityService {

    @Autowired
    private WebClient.Builder webClientBuilder;

    public String getGenderProbability(String name) {
        String apiUrl = "https://api.genderprobability.io/gender?name=" + name;

        // Fetch gender probability
        Map<String, Object> response = webClientBuilder.build()
            .get()
            .uri(apiUrl)
            .retrieve()
            .bodyToMono(Map.class)
            .block();

        if (response != null && response.containsKey("gender")) {
            return (String) response.get("gender");
        }

        return "Unknown";
    }
}

Here, WebClient from the spring-boot-starter-webflux module is used to fetch data from the REST API. Depending on the actual API, you may have to adjust parameters or response handling.

3. Create a Controller

@Controller
@RequestMapping("/gender-probability")
public class GenderProbabilityController {

    @Autowired
    private GenderProbabilityService genderProbabilityService;

    @GetMapping
    public String getGenderForm() {
        return "genderForm";  // Return your form view
    }

    @PostMapping
    public String fetchGender(@RequestParam String name, Model model) {
        String gender = genderProbabilityService.getGenderProbability(name);
        model.addAttribute("gender", gender);
        return "genderResult";  // Return your result view
    }
}

4. Create Views (e.g., with Thymeleaf)

genderForm.html:

<form action="/gender-probability" method="post">
    Name: <input type="text" name="name">
    <input type="submit" value="Get Gender Probability">
</form>

genderResult.html:

<p>Probable Gender: <span th:text="${gender}"></span></p>

5. Run & Test

Now, run your Spring Boot application and navigate to /gender-probability. Enter a name to see its probable gender.

Note: This example is based on a hypothetical API. Depending on the actual API you're using, you might have to adjust the code, provide API keys, handle rate limits, etc. Always read and understand the API documentation and usage terms when integrating third-party services into your application.

  1. Spring MVC Gender Prediction REST API Example:

    • Description: This is a basic example illustrating how to use a REST API to predict the gender probability of a given name in a Spring MVC application. It typically involves making a request to an external gender prediction API.

    • Code Snippet: (Controller Method with RestTemplate)

      @Controller
public class GenderPredictionController {
    @GetMapping("/predictGender")
    @ResponseBody
    public String predictGender(@RequestParam("name") String name) {
        // Use RestTemplate to make a request to the gender prediction API
        // Parse the response and return gender probability information
        return "Gender prediction for " + name + ": 80% Male, 20% Female";
    }
}

  2. Using REST API to Get Gender Probability in Spring MVC:

    • Description: This example extends the basic gender prediction example by using a specific REST API to get the probability of a given name belonging to a certain gender.

    • Code Snippet: (Controller Method with Gender Prediction API)

      @Controller
public class GenderPredictionController {
    @GetMapping("/predictGender")
    @ResponseBody
    public String predictGender(@RequestParam("name") String name) {
        // Use RestTemplate to make a request to a gender prediction API
        // Parse the response and return gender probability information
        return "Gender prediction for " + name + ": 75% Male, 25% Female";
    }
}

  3. Consuming Gender Prediction API in Spring MVC:

    • Description: This example focuses on the client-side of consuming an external gender prediction API using Spring's RestTemplate.

    • Code Snippet: (RestTemplate Usage)

      RestTemplate restTemplate = new RestTemplate();
ResponseEntity<String> response = restTemplate.getForEntity("https://api.genderpredictionapi.com/predict?name=John", String.class);
String genderPrediction = response.getBody();

  4. RESTful Gender Prediction Endpoint in Spring MVC:

    • Description: This example demonstrates creating a RESTful endpoint in Spring MVC that provides gender prediction information based on a given name.

    • Code Snippet: (RestController)

      @RestController
public class GenderPredictionRestController {
    @GetMapping("/api/genderPrediction")
    public ResponseEntity<String> predictGender(@RequestParam("name") String name) {
        // Logic to fetch and return gender prediction information
        return ResponseEntity.ok("Gender prediction for " + name + ": 80% Male, 20% Female");
    }
}

  5. Retrieving Gender Probability with Spring RestTemplate:

    • Description: This example showcases the usage of RestTemplate to retrieve gender probability information from an external API in a Spring MVC application.

    • Code Snippet: (Service Class)

      public class GenderPredictionService {
    private final String genderPredictionApiUrl = "https://api.genderpredictionapi.com/predict?name=John";

    public String predictGender() {
        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity<String> response = restTemplate.getForEntity(genderPredictionApiUrl, String.class);
        return response.getBody();
    }
}

  6. Spring MVC Name-to-Gender Converter with REST API:

    • Description: This example combines name-to-gender conversion features with real-time gender prediction obtained from an external REST API.

    • Code Snippet: (Name-to-Gender Converter Controller)

      @Controller
public class NameToGenderConverterController {
    @Autowired
    private GenderPredictionService genderPredictionService;

    @GetMapping("/convertNameToGender")
    public String convertNameToGender(@RequestParam("name") String name, Model model) {
        String genderPrediction = genderPredictionService.predictGender();
        // Process gender prediction information and return result
        model.addAttribute("result", "Predicted gender for " + name + ": Male");
        return "genderConversionResult";
    }
}

  7. External API Integration for Gender Prediction in Spring MVC:

    • Description: This example illustrates the integration of an external gender prediction API into a Spring MVC application.

    • Code Snippet: (Service Integration)

      public class GenderPredictionService {
    private final String genderPredictionApiUrl = "https://api.genderpredictionapi.com/predict?name=John";

    public String predictGender() {
        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity<String> response = restTemplate.getForEntity(genderPredictionApiUrl, String.class);
        return response.getBody();
    }
}

  8. Fetching Gender Probability by Name in Spring MVC:

    • Description: This example focuses on fetching real-time gender probability from an external API based on a given name and displaying it in a Spring MVC application.

    • Code Snippet: (Controller Method)

      @Controller
public class GenderPredictionController {
    @Autowired
    private GenderPredictionService genderPredictionService;

    @GetMapping("/genderProbability")
    public String showGenderProbability(@RequestParam("name") String name, Model model) {
        String genderPrediction = genderPredictionService.predictGender();
        // Process gender prediction information and return result
        model.addAttribute("result", "Predicted gender probability for " + name + ": Male: 80%, Female: 20%");
        return "genderPredictionResult";
    }
}

  9. Building a Gender Prediction Service with Spring MVC and REST:

    • Description: This example combines the features of a gender prediction service with real-time gender prediction obtained from an external REST API.

    • Code Snippet: (Gender Prediction Controller)

      @Controller
public class GenderPredictionController {
    @Autowired
    private GenderPredictionService genderPredictionService;

    @GetMapping("/genderPredictionService")
    public String showGenderPredictionService(@RequestParam("name") String name, Model model) {
        String genderPrediction = genderPredictionService.predictGender();
        // Process gender prediction information and return result
        model.addAttribute("result", "Gender prediction for " + name + ": Male: 80%, Female: 20%");
        return "genderPredictionServiceResult";
    }
}
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