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The Spring MVC docking interface can be performed through the following steps:

1. Set related dependencies: Add Spring MVC related dependencies, such as spring-webmvc, jackson-databind, etc., to the project's pom.xml file.

2. Create a Controller class: Create a Controller class in the project, annotate the class with the @Controller annotation, and process requests for each interface through the @RequestMapping annotation.

3. Define interface methods: Define methods in the Controller class and use the @RequestMapping annotation to specify the corresponding interface path and request method (GET, POST, etc.). The return value of the method can be a view name, JSON data, etc.

4. Processing interface requests: Write business logic code in the method and call the service layer method to process the request.

5. Return result: In the method, encapsulate the processing result into a data format returned to the front end. You can use the @ResponseBody annotation to convert the return result into JSON format data.

6. Configure Spring MVC: Configure Spring MVC related configurations in the project configuration file, such as view resolver, message converter, etc.

7. Deployment and testing: Deploy the project to the server and test whether the interface function is normal by accessing the interface path.

It should be noted that when docking the interface, it is necessary to determine the path and request method of the interface, and perform corresponding coding according to the interface document or requirements. At the same time, it is necessary to handle the encapsulation and conversion of request parameters and return results.

Spring MVC uses controllers to interface. A controller is a component in Spring MVC that is responsible for receiving requests, processing them based on the content of the request, and then returning a response.

The following is an example showing how to connect to an API to obtain user information:

1. First, create a controller class, such as UserControllerand use @Controller The annotation marks the class. In this class, you can define multiple methods for processing requests.

@Controller
public class UserController {
 
    // 定义一个处理GET请求的方法
    @GetMapping("/users/{id}")
    public ResponseEntity<User> getUser(@PathVariable Long id) {
        // 根据用户id查询用户信息
        User user = userService.getUserById(id);
        
        // 如果用户不存在，则返回404状态码
        if (user == null) {
            return ResponseEntity.notFound().build();
        }
        
        // 如果用户存在，则返回用户信息及200状态码
        return ResponseEntity.ok(user);
    }
 
    // 定义一个处理POST请求的方法
    @PostMapping("/users")
    public ResponseEntity<Void> createUser(@RequestBody User user) {
        // 创建用户
        userService.createUser(user);
 
        // 返回201状态码表示创建成功
        return ResponseEntity.created(URI.create("/users/" + user.getId())).build();
    }
 
    // 其他处理请求的方法...
}

1. In a controller class, you can define multiple methods to handle requests. @GetMapping、@PostMapping etc. to specify the URL path and HTTP method to process the request. In the method parameters, you can use@PathVariable Annotation to get the path parameters in the URL, use@RequestBody Annotation to get the parameters in the request body.

2. In the method body, you can process according to business needs and return a response based on the results. ResponseEntity class to build the response, for example usingResponseEntity.ok() To indicate a successful response, useResponseEntity.notFound() To indicate a response that a resource does not exist, useResponseEntity.created() To indicate a successful response to resource creation, etc.

The above is a simple example of Spring MVC docking interface. By defining the controller class and the method for processing the request, you can access and process the interface and return the corresponding response.