Добавил ApiResponse

pom.xml

@@ -2,20 +2,23 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
+    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-parent -->
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.4.1</version>
+        <version>3.3.5</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
+
     <groupId>org.sadtech.example</groupId>
     <artifactId>swagger</artifactId>
     <version>0.0.1-SNAPSHOT</version>
+
     <name>swagger</name>
     <description>Demo project for Swagger</description>
 
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>21</java.version>
     </properties>
 
     <dependencies>
@@ -24,15 +27,11 @@
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
 
-        <dependency>
+        <!-- https://mvnrepository.com/artifact/org.springdoc/springdoc-openapi-starter-webmvc-ui -->
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>2.1.6</version>
-        </dependency>
         <dependency>
             <groupId>org.springdoc</groupId>
-            <artifactId>springdoc-openapi-ui</artifactId>
+            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
-            <version>1.5.2</version>
+            <version>2.6.0</version>
         </dependency>
     </dependencies>
 
@@ -45,4 +44,13 @@
         </plugins>
     </build>
 
+    <developers>
+        <developer>
+            <id>uPagge</id>
+            <name>Struchkov Mark</name>
+            <email>mark@struchkov.dev</email>
+            <url>https://mark.struchkov.dev</url>
+        </developer>
+    </developers>
+
 </project>

src/main/java/org/sadtech/example/swagger/config/OpenApiConfig.java

@@ -0,0 +1,23 @@
+package org.sadtech.example.swagger.config;
+
+import io.swagger.v3.oas.annotations.OpenAPIDefinition;
+import io.swagger.v3.oas.annotations.info.Contact;
+import io.swagger.v3.oas.annotations.info.Info;
+
+/**
+ * @author upagge 30.12.2020
+ */
+@OpenAPIDefinition(
+        info = @Info(
+                title = "Loyalty System Api",
+                description = "Loyalty System", version = "1.0.0",
+                contact = @Contact(
+                        name = "Struchkov Mark",
+                        email = "mark@struchkov.dev",
+                        url = "https://mark.struchkov.dev"
+                )
+        )
+)
+public class OpenApiConfig {
+
+}

src/main/java/org/sadtech/example/swagger/config/SwaggerConfig.java

@@ -1,31 +0,0 @@
-package org.sadtech.example.swagger.config;
-
-import io.swagger.v3.oas.models.OpenAPI;
-import io.swagger.v3.oas.models.info.Contact;
-import io.swagger.v3.oas.models.info.Info;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-/**
- * @author upagge 30.12.2020
- */
-@Configuration
-public class SwaggerConfig {
-
-    @Bean
-    public OpenAPI customOpenAPI() {
-        return new OpenAPI()
-                .info(
-                        new Info()
-                                .title("Loyalty System Api")
-                                .version("1.0.0")
-                                .contact(
-                                        new Contact()
-                                                .email("me@upagge.ru")
-                                                .url("https://uPagge.ru")
-                                                .name("Struchkov Mark")
-                                )
-                );
-    }
-
-}

src/main/java/org/sadtech/example/swagger/controller/PointController.java

@@ -2,19 +2,23 @@ package org.sadtech.example.swagger.controller;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.enums.ParameterIn;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotBlank;
 import org.sadtech.example.swagger.dto.TypeOperation;
 import org.sadtech.example.swagger.dto.UserDto;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
-import javax.validation.constraints.Min;
-import javax.validation.constraints.NotBlank;
 import java.util.Map;
 
 /**
@@ -33,11 +37,12 @@ public class PointController {
     }
 
     @PostMapping("{key}")
+    @ApiResponse(responseCode = "400", description = "Неверный запрос — количество баллов должно быть неотрицательным")
     @Operation(summary = "Управление баллами", description = "Позволяет удалить или добавить баллы пользователю")
     public HttpStatus changePoints(
             @PathVariable @NotBlank @Parameter(description = "Идентификатор пользователя") String key,
-            @RequestPart("point") @Min(0) @Parameter(description = "Количество баллов", required = true) Long point,
+            @RequestParam("point") @Min(0) @Parameter(description = "Количество баллов", required = true, example = "100") Long point,
-            @RequestPart("type") @Parameter(description = "Тип операции", required = true) TypeOperation type
+            @RequestParam("type") @Parameter(description = "Тип операции", required = true, example = "PLUS") TypeOperation type
     ) {
         final UserDto userDto = repository.get(key);
         userDto.setPoints(

src/main/java/org/sadtech/example/swagger/controller/UserController.java

@@ -1,5 +1,6 @@
 package org.sadtech.example.swagger.controller;
 
+import io.swagger.v3.oas.annotations.ExternalDocumentation;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import org.sadtech.example.swagger.dto.UserDto;
@@ -22,7 +23,14 @@ import static org.springframework.util.MimeTypeUtils.APPLICATION_JSON_VALUE;
  */
 @RestController
 @RequestMapping("/api/user")
-@Tag(name = "Пользователи", description = "Взаимодействие с пользователями")
+@Tag(
+        name = "User Controller",
+        description = "Контроллер для управления пользователями",
+        externalDocs = @ExternalDocumentation(
+                description = "Ссылка на общую документацию",
+                url = "https://example.com/docs/user-controller"
+        )
+)
 public class UserController {
 
     private final Map<String, UserDto> repository;

src/main/java/org/sadtech/example/swagger/dto/UserDto.java

@@ -2,7 +2,6 @@ package org.sadtech.example.swagger.dto;
 
 import io.swagger.v3.oas.annotations.media.Schema;
 
-import javax.validation.constraints.NotBlank;
 import java.time.LocalDateTime;
 
 /**