SpringBoot2.0学习之集成Swagger2, 放弃原有接口文档
1. 为什么要使用Swagger2?
Swagger2可以在更新代码的同时更新接口文档,不会出现代码更新了好几个版本了,但是接口文档从来没更新过,导致后期维护的困难。我有一个同学刚入职的一家公司,代码和接口文档根本就对不上,导致他现在根本不敢轻易动代码。
2. 如何集成Swagger2.
1. 在pom.xml中引入相关依赖
<!--swagger2-->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<!--swagger-ui-->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
2. 编写Swagger2配置类
@Configuration
@EnableSwagger2
public class Swagger2Config {
@Bean
public Docket userApi() {
return new Docket(DocumentationType.SWAGGER_2)
.enable(true)
.apiInfo(new ApiInfoBuilder()
.title("集成使用Swagger2")
.description("这里是描述信息")
.version("1.0")
.build())
.select()
.apis(RequestHandlerSelectors.basePackage("com.qf.demo"))
.paths(PathSelectors.any())
.build();
}
}
3. 开始给接口写描述信息,常用注解如下:
@Api:用于描述类
@ApiOperation:用于描述接口方法
@ApiImplicitParam:写在方法上,用于描述参数信息
@ApiImplicitParams:一组参数信息,可以放多个@ApiImplicitParam
@ApiParam:写在参数上,用于描述参数信息
@ApiModel:写在类上,用于描述实体信息
@ApiModelProperty:写在属性上,用于描述实体属性信息
测试代码如下:
controller:
@Api(tags = "用户管理相关接口")
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
@ApiOperation(value = "添加一个用户")
@ApiImplicitParams({
@ApiImplicitParam(name = "name", value = "姓名", required = true, paramType = "query", dataType = "String"),
@ApiImplicitParam(name = "age", value = "年龄", required = true, paramType = "query", dataType = "Integer")
})
@RequestMapping(value = "/insert", method = RequestMethod.POST)
public String insert(@RequestParam("name") String name, Integer age) {
userService.insert(name, age);
return "success";
}
@ApiOperation(value = "分页查询用户列表")
@RequestMapping(value = "selectList", method = RequestMethod.POST)
public PageInfo<User> selectList(@ApiParam(value = "页数") Integer page, @ApiParam(value = "每页记录数")Integer pageSize) {
return userService.selectList(page, pageSize);
}
@ApiOperation(value = "删除一个用户")
@ApiImplicitParam(name = "id", value = "用户ID", required = true, paramType = "path")
@RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
public Integer delete(@PathVariable Integer id) {
return id;
}
}
实体类
@Data
@ApiModel(description = "用户实体信息")
public class User {
@ApiModelProperty("用户ID")
private Integer id;
@ApiModelProperty("姓名")
private String name;
@ApiModelProperty("年龄")
private Integer age;
@ApiModelProperty("地址")
private String address;
}
3. 访问http://localhost:8080/swagger-ui.html 结果如下:

Ps: 如果需要分组的话,需要配置多个Docket Bean, 通过groupName进行分组,例如:
@Configuration
@EnableSwagger2
public class Swagger2Config {
@Bean
public Docket userApi() {
return new Docket(DocumentationType.SWAGGER_2)
.enable(true)
.groupName("分组1")
.apiInfo(new ApiInfoBuilder()
.title("集成使用Swagger2")
.description("这里是描述信息")
.version("1.0")
.build())
.select()
.apis(RequestHandlerSelectors.basePackage("com.qf.demo.controller"))
.paths(PathSelectors.any())
.build();
}
@Bean
public Docket groupApi() {
return new Docket(DocumentationType.SWAGGER_2)
.enable(true)
.groupName("分组2")
.apiInfo(new ApiInfoBuilder()
.title("集成使用Swagger2")
.description("这里是描述信息")
.version("1.0")
.build())
.select()
.apis(RequestHandlerSelectors.basePackage("com.qf.demo.group2"))
.paths(PathSelectors.any())
.build();
}
}
如图:

一个人如果知道自己为什么而活,就可以忍受任何一种生活 ---- 尼采