SpringBoot实战—Swagger接口的文档

1. 导入 knife4j 的maven坐标

   在pom.xml中添加依赖

   <dependency>
      <groupId>com.github.xiaoymin</groupId>
      <artifactId>knife4j-spring-boot-starter</artifactId>
   </dependency>
   

2. 在配置类中加入 knife4j 相关配置

   WebMvcConfiguration.java

   /**
        * 通过knife4j生成接口文档
        * @return
   */
       @Bean
       public Docket docket() {
           ApiInfo apiInfo = new ApiInfoBuilder()
                   .title("xxxx项目接口文档")
                   .version("1.0")
                   .description("这是我的接口文档描述")
                   .build();
           Docket docket = new Docket(DocumentationType.SWAGGER_2)
                   .apiInfo(apiInfo)
                   .select()
                   .apis(RequestHandlerSelectors.basePackage("com.sky.controller"))
                   .paths(PathSelectors.any())
                   .build();
           return docket;
       }
   

3. 设置静态资源映射，否则接口文档页面无法访问

/**
 * 配置类，注册web层相关组件
 */
@Configuration
@Slf4j
public class WebMvcConfiguration extends WebMvcConfigurationSupport {
/**
     * 通过knife4j生成接口文档
     *
     * @return
     */
    @Bean
    public Docket docket1(){
        log.info("准备生成接口文档...");
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("外卖项目接口文档")
                .version("2.0")
                .description("外卖项目接口文档")
                .build();

        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("管理端接口")
                .apiInfo(apiInfo)
                .select()
                //指定生成接口需要扫描的包
                .apis(RequestHandlerSelectors.basePackage("com.sky.controller.admin"))
                .paths(PathSelectors.any())
                .build();

        return docket;
    }

    @Bean
    public Docket docket2(){
        log.info("准备生成接口文档...");
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("外卖项目接口文档")
                .version("2.0")
                .description("外卖项目接口文档")
                .build();

        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("用户端接口")
                .apiInfo(apiInfo)
                .select()
                //指定生成接口需要扫描的包
                .apis(RequestHandlerSelectors.basePackage("com.sky.controller.user"))
                .paths(PathSelectors.any())
                .build();

        return docket;
    }

    /**
     * 设置静态资源映射
     *
     * @param registry
     */
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }
}

通过注解可以控制生成的接口文档，使接口文档拥有更好的可读性，常用注解如下：

接下来，使用上述注解，生成可读性更好的接口文档

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import java.io.Serializable;

@Data
@ApiModel(description = "员工登录时传递的数据模型")
public class EmployeeLoginDTO implements Serializable {

    @ApiModelProperty("用户名")
    private String username;

    @ApiModelProperty("密码")
    private String password;
}

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@ApiModel(description = "员工登录返回的数据格式")
public class EmployeeLoginVO implements Serializable {

    @ApiModelProperty("主键值")
    private Long id;

    @ApiModelProperty("用户名")
    private String userName;

    @ApiModelProperty("姓名")
    private String name;

    @ApiModelProperty("jwt令牌")
    private String token;
}

/**
 * 员工管理
 */
@RestController
@RequestMapping("/admin/employee")
@Slf4j
@Api(tags = "员工相关接口")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;
    @Autowired
    private JwtProperties jwtProperties;

    /**
     * 登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @PostMapping("/login")
    @ApiOperation(value = "员工登录")
    public Result<EmployeeLoginVO> login(@RequestBody EmployeeLoginDTO employeeLoginDTO)    {
        //..............
    }

    /**
     * 退出
     *
     * @return
     */
    @PostMapping("/logout")
    @ApiOperation("员工退出")
    public Result<String> logout() {
        return Result.success();
    }
}

启动服务：访问http://localhost:8080/doc.html