16、springcloud整合Swagger2构建Restful服务的APIs

转自：https://blog.csdn.net/huangjinjin520/article/details/89740672

Spring Cloud将服务注册到了Eureka上，可以从Eureka的UI界面中，看到有哪些服务已经注册到了Eureka Server上；但是如果想查看当前服务提供了哪些RESTful接口方法的话，就无法从Eureka Server获取了，而传统的方法是梳理一个接口文档来供开发人员之间来进行交流。这种情况下经常会造成文档和代码的不一致性，比如说代码改了，但是接口文档还没来得及修改等问题，而Swagger2则给我们提供了一套完美的解决方案，下面来看看Swagger2是如何来解决这个问题的。

1、 新建项目sc-swagger2，对应的pom.xml文件

<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>spring-cloud</groupId>
	<artifactId>sc-swagger2</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>sc-swagger2</name>
	<url>http://maven.apache.org</url>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.4.RELEASE</version>
	</parent>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Finchley.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>

		</dependencies>
	</dependencyManagement>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<maven.compiler.source>1.8</maven.compiler.source>
		<maven.compiler.target>1.8</maven.compiler.target>
	</properties>

	<dependencies>

		<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>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	</dependencies>
</project>
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2、 新建springboot启动类

package sc.swagger2;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Swagger2Application {
	
	public static void main(String[] args) {
		SpringApplication.run(Swagger2Application.class, args);
	}

}
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3、 新建Swagger2配置类

package sc.swagger2.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.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Configuration
@EnableSwagger2
public class Swagger2Config {

	@Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("sc.swagger2"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Spring Boot中使用Swagger2构建RESTful APIs")
                .description("更多Spring Boot相关文章请关注: JAVA乐园  公众号")
                .termsOfServiceUrl("https://edu.csdn.net/lecturer/995")
                .contact(new Contact("huangjinjin", //
                		"https://edu.csdn.net/lecturer/995",//
                		"happyhuangjinjin@sina.com"))
                .version("1.0")
                .build();
    }


}
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4、 新建一个模拟的Controller

package sc.swagger2.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import sc.swagger2.model.User;

@Api(value="用户管理")
@Controller
public class UserController {

	@ApiResponses({ @ApiResponse(code = 000000, message = "操作成功"),
		@ApiResponse(code = 000001, message = "服务器内部异常") })
	@GetMapping(value = "/feign/user/getUser/{id}")
	@ResponseBody
	@ApiOperation(value = "获取根据Id用户信息",response = User.class)
	@ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long",example="100")
	public Map<String, Object> getUser(@PathVariable Long id) {
		Map<String, Object> result = new HashMap<String, Object>();
		result.put("code", "000000");
		result.put("msg", "success");
		User u = new User();
		u.setId(1L);
		u.setAge(23);
		u.setUserName("huangjinjin");
		u.setPosition("cto");
		result.put("body", u);
		return result;
	}

	@ApiResponses({ @ApiResponse(code = 000000, message = "操作成功"), 
		@ApiResponse(code = 000001, message = "服务器内部异常") })
	@RequestMapping(value = "/feign/user/listUser", method = RequestMethod.GET)
	@ResponseBody
	@ApiOperation(value = "获取用户列表")
	public Map<String, Object> listUser() {
		Map<String, Object> result = new HashMap<String, Object>();
		result.put("code", "000000");
		result.put("msg", "success");
		User u = new User();
		u.setId(1L);
		u.setAge(23);
		u.setUserName("huangjinjin");
		u.setPosition("cto");
		List<User> list = new ArrayList<User>();
		list.add(u);
		result.put("body", list);
		return result;
	}

	@ApiResponses({ @ApiResponse(code = 000000, message = "操作成功"), 
		@ApiResponse(code = 000001, message = "服务器内部异常") })
	@PostMapping(value = "/feign/user/addUser")
	@ResponseBody
	@ApiOperation(value = "添加用户", notes = "根据User对象创建用户")
	@ApiImplicitParams({ @ApiImplicitParam(name = "userName", value = "用户名", required = true, dataType = "String"),
		@ApiImplicitParam(name = "age", value = "年龄", required = true, dataType = "String"),
		@ApiImplicitParam(name = "position", value = "职位", required = true, dataType = "String"),
		@ApiImplicitParam(name = "id", value = "用户ID", required = false, dataType = "Long",example="100")})
	public Map<String, Object> addUser(User user) {
		Map<String, Object> result = new HashMap<String, Object>();
		result.put("code", "000000");
		result.put("msg", "success");
		result.put("body", 1);
		return result;
	}

	@ApiResponses({ @ApiResponse(code = 000000, message = "操作成功"), 
		@ApiResponse(code = 000001, message = "服务器内部异常") })
	@ApiOperation(value = "更新用户")
	@PutMapping(value = "/feign/user/updateUser")
	@ResponseBody
	@ApiImplicitParams({ @ApiImplicitParam(name = "userName", value = "用户名", required = true, dataType = "String"),
		@ApiImplicitParam(name = "age", value = "年龄", required = true, dataType = "String"),
		@ApiImplicitParam(name = "position", value = "职位", required = true, dataType = "String"),
		@ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", example="100")})
	public Map<String, Object> updateUser(User user) {
		Map<String, Object> result = new HashMap<String, Object>();
		result.put("code", "000000");
		result.put("msg", "success");
		result.put("body", 1);
		return result;
	}

	@ApiResponses({ @ApiResponse(code = 000000, message = "操作成功"), 
		@ApiResponse(code = 000001, message = "服务器内部异常") })
	@DeleteMapping(value = "/feign/user/deleteUser/{id}")
	@ResponseBody
	@ApiOperation(value = "删除用户")
	@ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long",example="100")
	public Map<String, Object> deleteUser(@PathVariable Long id) {
		Map<String, Object> result = new HashMap<String, Object>();
		result.put("code", "000000");
		result.put("msg", "success");
		result.put("body", 1);
		return result;
	}
	
}
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5、 新建User模型类

package sc.swagger2.model;

import java.io.Serializable;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;

@ApiModel
public class User implements Serializable {

	private static final long serialVersionUID = 4639927446947303736L;

	@ApiModelProperty(name="id", dataType="Long", value="主键ID")
	private Long id;

	@ApiModelProperty(name="userName", dataType="String", value="姓名", required=true)
	private String userName;

	@ApiModelProperty(name="age", dataType="String", value="年龄", required=true)
	private Integer age;

	@ApiModelProperty(name="position", dataType="String", value="职位")
	private String position;

	public String getUserName() {
		return userName;
	}

	public void setUserName(String userName) {
		this.userName = userName;
	}

	public Integer getAge() {
		return age;
	}

	public void setAge(Integer age) {
		this.age = age;
	}

	public String getPosition() {
		return position;
	}

	public void setPosition(String position) {
		this.position = position;
	}

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

}
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6、 启动sc-swagger2项目，并验证是否启动成功
方式一：查看日志
在这里插入图片描述
方式二：访问地址
http://127.0.0.1:9092/swagger-ui.html
在这里插入图片描述
或者访问http://localhost:9092/v2/api-docs
在这里插入图片描述

7、 在界面http://127.0.0.1:9092/swagger-ui.html点击【user-controller】可以看到所有的接口，同时也可以在界面上进行接口调用调试

在这里插入图片描述

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原文地址：https://www.cnblogs.com/sharpest/p/13709809.html