add an entity, repository and springdoc-openapi-starter-webmvc-ui:2.8.1

repro sample for springdoc/springdoc-openapi#2846

Author: zyro23

build.gradle

@@ -18,6 +18,7 @@ repositories {
 }
 
 dependencies {
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.1'
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'org.springframework.boot:spring-boot-starter-data-rest'
 	implementation 'org.springframework.boot:spring-boot-starter-web'

src/main/java/com/example/demo/Foo.java

@@ -0,0 +1,19 @@
+package com.example.demo;
+
+import jakarta.persistence.*;
+
+@Entity
+public class Foo {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    @Column(nullable = false)
+    private Long id;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+}

src/main/java/com/example/demo/FooRepository.java

@@ -0,0 +1,8 @@
+package com.example.demo;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+
+@RepositoryRestResource
+public interface FooRepository extends JpaRepository<Foo, Long> {
+}