Swagger是为了方便进行测试后台的restful形式的接口，实现动态的更新，当我们在后台的接口修改了后，swagger可以实现自动的更新，而不需要人为的维护这个接口进行测试。

1、新建SpringBoot项目结构

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2、在pom.xml中引入依赖

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

3、在项目根目录下，新建Swagger2.java类。

package testswagger.testswagger;

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;

@Configuration
@EnableSwagger2
public class Swagger2 {
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("testswagger.testswagger.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    @SuppressWarnings("deprecation")
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Spring Boot 测试使用 Swagger2 构建RESTful API")
                .description("个人测试用api")
                .contact("测试")
                .version("1.0")
                .build();
    }
}

4、新建控制器StudentController.java类

package testswagger.testswagger.controller;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping(value = "/student")
@Api(value = "测试StudentController接口")
public class StudentController {

    @RequestMapping(value = "/add/{id}/{name}",method = RequestMethod.GET)
    @ApiOperation(value = "增加学生信息接口",httpMethod = "GET")
    @ApiImplicitParams({
            @ApiImplicitParam(name="id",value = "学生id",dataType = "int",required = true),
            @ApiImplicitParam(name="name",value = "学生姓名",dataType = "String",required = true)
    })
    public Object addStudent(@PathVariable int id, @PathVariable String name){
        System.out.println(id+","+name);
        return "success";
    }



    @RequestMapping(value = "/delete/{id}",method = RequestMethod.GET)
    @ApiOperation(value = "删除学生信息接口",httpMethod = "GET")
    @ApiImplicitParams({
            @ApiImplicitParam(name="id",value = "学生id",dataType = "int",required = true),
    })
    public Object deleteStudent(@PathVariable int id){
        System.out.println(id);
        return "success";
    }

    @RequestMapping(value = "/update/{id}/{name}",method = RequestMethod.GET)
    @ApiOperation(value = "更新学生信息接口",httpMethod = "GET")
    @ApiImplicitParams({
            @ApiImplicitParam(name="id",value = "学生id",dataType = "int",required = true),
            @ApiImplicitParam(name="name",value = "学生姓名",dataType = "String",required = true)
    })
    public Object updateStudent(@PathVariable int id, @PathVariable String name){
        System.out.println(id+","+name);
        return "success";
    }

    @RequestMapping(value = "/select/{id}",method = RequestMethod.GET)
    @ApiOperation(value = "查询学生信息接口",httpMethod = "GET")
    @ApiImplicitParams({
            @ApiImplicitParam(name="id",value = "学生id",dataType = "int",required = true)
    })
    public Object addStudent(@PathVariable int id){
        System.out.println(id);
        return "success";
    }

}

5、测试

在网址栏访问：http://localhost:8080/swagger-ui.html

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