记 Swagger 2

Maven坐标：

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.9.2</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.9.2</version>
</dependency>

配置Swagger2：

package com.pinecone.leaf.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@EnableSwagger2
@Configuration
public class Swagger2 {
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.pinecone.leaf.controller"))
                .paths(PathSelectors.any())
                .build();
    }
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder().title("Springboot使用Swagger2构建Api文档")
                .description("构建简单优雅的Restful风格api")
                .termsOfServiceUrl("localhost")
                .version("1.0")
                .build();
    }
}

实体类（使用Lombok）：

package com.pinecone.leaf.domain;

import lombok.*;

import javax.persistence.*;

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@ToString

@Entity
@Table(name = "user")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    private String name;
}

Dao层：

package com.pinecone.leaf.repository;

import com.pinecone.leaf.domain.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends JpaRepository<User, Integer> {
}

提供单例：

package com.pinecone.leaf.singleton;

import com.pinecone.leaf.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class RepositorySingleTon {
    public static UserRepository userRepository;

    @Autowired
    public RepositorySingleTon(UserRepository userRepository) {
        RepositorySingleTon.userRepository = userRepository;
    }
}

控制器：

package com.pinecone.leaf.controller;

import com.pinecone.leaf.domain.User;
import com.pinecone.leaf.singleton.RepositorySingleTon;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Optional;

@RestController
public class UserController {
    @GetMapping("/users")
    public List<User> findAll() {
        return RepositorySingleTon.userRepository.findAll();
    }
    @PostMapping("/users")
    public void save(User user) {
        RepositorySingleTon.userRepository.save(user);
    }
    @PutMapping("/users")
    public void put(User user) {
        RepositorySingleTon.userRepository.save(user);
    }
    @DeleteMapping("/users")
    public void deleteAll() {
        RepositorySingleTon.userRepository.deleteAll();
    }
    @GetMapping("/users/{id}")
    public Optional<User> findById(@PathVariable Integer id) {
        return RepositorySingleTon.userRepository.findById(id);
    }
    @DeleteMapping("/users/{id}")
    public void deleteById(@PathVariable Integer id) {
        RepositorySingleTon.userRepository.deleteById(id);
    }
}

 访问 Swagger UI（我端口直接用的80），大致如下图：