现在公司中项目几乎都是前后端分离， 前端和后端的唯一联系，变成了API接口，以前用postman来测试后台接口，刚刚接触了Swagger，觉得是一个不错的自测工具。接下来我们就开始整合。
1.jar包的引入

<!-- swagger -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.5.0</version>
        </dependency>
        <!-- swagger-ui -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.5.0</version>
        </dependency>

2.swagger2的配置文件
在项目的启动类的同级文件建立

package com.example.spring;

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 Swagger2 {

    //swagger2的配置文件，这里可以配置swagger2的一些基本的内容，比如扫描的包等等
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                //为当前包路径
                .apis(RequestHandlerSelectors.basePackage("com.example.spring"))
                .paths(PathSelectors.any())
                .build();
    }
    //构建 api文档的详细信息函数,注意这里的注解引用的是哪个
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                //页面标题
                .title("Spring Boot 测试使用 Swagger2 构建RESTful API")
                //创建人
                .contact(new Contact("xiaohong", "http://www.baidu.com", ""))
                //版本号
                .version("1.0")
                //描述
                .description("API 描述")
                .build();
    }
}

3.编写controller层

package com.example.spring.controller;

import com.example.spring.model.User;
import com.example.spring.service.UserService;
import io.swagger.annotations.Api;

import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiOperation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
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("api")
@Api("swaggerDemoController相关的api")
public class SwaggerDemoController {

    @Autowired
    private UserService userService;

    private static final Logger logger= LoggerFactory.getLogger(SwaggerDemoController.class);


    @ApiOperation(value = "根据id查询用户信息", notes = "查询数据库中某个的用户信息")
    @ApiImplicitParam(name = "id", value = "UserID", paramType = "path", required = true, dataType = "Long")
    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public User getStudent(@PathVariable Long id) {
        logger.info("开始查询某个用户信息");
        return userService.selectByPrimaryKey(id);
    }
}

再写一个

package com.example.spring.controller;

import com.example.spring.model.User;
import com.example.spring.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@EnableAutoConfiguration
@RequestMapping("/testboot")
public class TestController {

    @Autowired
    UserService userService;

    @RequestMapping("getuser")
    public User getUser() {
        User user = new User();
        user.setName("test");
        return user;
    }


    @PostMapping("add")
    public int addUser(@RequestBody User user){
      return  userService.insert(user);

    }
}

这样swagger2与springboot就集成完毕了。

访问 http://localhost:8080/swagger-ui.html 看一下最终结果

发现出来了两个咱们刚刚写的controller

点开

出现查询结果，如下

是不是很方便，我们不用像postman一样来编写入口，swagger2自动完成

而且实时更新