简介
knife4j是swagger的增强版,更契合微服务架构,ui前身是swagger-bootstrap-ui,api注解的使用方式和swagger一致。
Spring boot整合knife4j
pom文件
<!-- 包含了ui界面 -->
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>knife4j-spring-boot-starter</artifactId>
<!-- 2.x基于springfox2.x,3.x基于springfox3.x-->
<version>3.0.2</version>
</dependency>
Configuration类 跟 swagger配置一样
@Configuration
@EnableSwagger2
@EnableKnife4j
@Import(BeanValidatorPluginsConfiguration.class)
public class Knife4jConfiguration {
/**
* 可指定多个Docket区分不同的分组
*
* @return
*/
@Bean
public Docket defaultApi() {
Docket docket = new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
//分组名称
.groupName("2.0.0版本")
.select()
//这里指定Controller扫描包路径 ,不能用 *
.apis(RequestHandlerSelectors.basePackage("com.*.*"))
//添加Api注解才显示
// .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))
.paths(PathSelectors.any())
.build();
return docket;
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("Api接口")
.description("# daping's RESTful APIs")
.termsOfServiceUrl("***")
.version("1.0.0")
.build();
}
}
####注解使用
在controller接口上添加对应的注解即可
@Api(tags = "登录")
@RestController
@RequestMapping("/oauth")
@AllArgsConstructor
@Slf4j
public class LogoutController {
@DeleteMapping("/login")
public Result login() {
return Result.success();
}
}
访问路径
项目路径+/doc.html
Spring Cloud集成knife4j
本文只介绍Spring Cloud GateWay集成knife4j。
pom文件
<!-- 包含了ui界面 -->
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>knife4j-spring-boot-starter</artifactId>
<!-- 2.x基于springfox2.x,3.x基于springfox3.x-->
<version>3.0.2</version>
</dependency>
yml文件配置
spring
cloud:
gateway:
discovery:
locator:
enabled: true # 启用服务发现
lower-case-service-id: true
routes:
- id: mall-auth
uri: lb://mall-auth
predicates:
- Path=/mall-auth/**
filters:
- SwaggerHeaderFilter
- StripPrefix=1
网关配置文件
SwaggerHeaderFilter 配置
在集成Spring Cloud Gateway网关的时候,会出现没有basePath的情况(即定义的例如/user、/order等微服务的前缀),这个情况在使用zuul网关的时候不会出现此问题,因此,在Gateway网关需要添加一个Filter实体Bean
@Component
public class SwaggerHeaderFilter extends AbstractGatewayFilterFactory {
private static final String HEADER_NAME = "X-Forwarded-Prefix";
private static final String URI = "/v2/api-docs";
@Override
public GatewayFilter apply(Object config) {
return (exchange, chain) -> {
ServerHttpRequest request = exchange.getRequest();
String path = request.getURI().getPath();
if (!StringUtils.endsWithIgnoreCase(path,URI )) {
return chain.filter(exchange);
}
String basePath = path.substring(0, path.lastIndexOf(URI));
ServerHttpRequest newRequest = request.mutate().header(HEADER_NAME, basePath).build();
ServerWebExchange newExchange = exchange.mutate().request(newRequest).build();
return chain.filter(newExchange);
};
}
}
SwaggerResourceConfig和SwaggerHandler
在我们使用Spring Boot等单体架构集成swagger项目时,是通过对包路径进行业务分组,然后在前端进行不同模块的展示,而在微服务架构下,我们的一个服务就类似于原来我们写的一个业务组
springfox-swagger提供的分组接口是swagger-resource,返回的是分组接口名称、地址等信息
在Spring Cloud微服务架构下,我们需要重写该接口,主要是通过网关的注册中心动态发现所有的微服务文档,代码如下:
@Slf4j
@Component
@Primary
@AllArgsConstructor
public class SwaggerResourceConfig implements SwaggerResourcesProvider {
private final RouteLocator routeLocator;
private final GatewayProperties gatewayProperties;
@Override
public List<SwaggerResource> get() {
List<SwaggerResource> resources = new ArrayList<>();
List<String> routes = new ArrayList<>();
routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId())).forEach(route -> {
route.getPredicates().stream() .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
.forEach(predicateDefinition -> resources.add(swaggerResource(route.getId(),
predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0") .replace("**", "v2/api-docs"))));
});
return resources;
}
private SwaggerResource swaggerResource(String name, String location) {
log.info("name:{},location:{}",name,location);
SwaggerResource swaggerResource = new SwaggerResource();
swaggerResource.setName(name);
swaggerResource.setLocation(location);
swaggerResource.setSwaggerVersion("2.0");
return swaggerResource;
}
}
@RestController
public class SwaggerHandler {
@Autowired(required = false)
private SecurityConfiguration securityConfiguration;
@Autowired(required = false)
private UiConfiguration uiConfiguration;
private final SwaggerResourcesProvider swaggerResources;
@Autowired
public SwaggerHandler(SwaggerResourcesProvider swaggerResources) {
this.swaggerResources = swaggerResources;
}
@GetMapping("/swagger-resources/configuration/security")
public Mono<ResponseEntity<SecurityConfiguration>> securityConfiguration() {
return Mono.just(new ResponseEntity<>(
Optional.ofNullable(securityConfiguration).orElse(SecurityConfigurationBuilder.builder().build()), HttpStatus.OK));
}
@GetMapping("/swagger-resources/configuration/ui")
public Mono<ResponseEntity<UiConfiguration>> uiConfiguration() {
return Mono.just(new ResponseEntity<>(
Optional.ofNullable(uiConfiguration).orElse(UiConfigurationBuilder.builder().build()), HttpStatus.OK));
}
@GetMapping("/swagger-resources")
public Mono<ResponseEntity> swaggerResources() {
return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
}
}
其他微服务使用
@EnableKnife4j
@Configuration
@EnableSwagger2WebMvc
public class SwaggerConfiguration {
@Bean
public Docket restApi() {
//schema
List<GrantType> grantTypes=new ArrayList<>();
//密码模式
String passwordTokenUrl="http://localhost:9999/mall-auth/oauth/token";
ResourceOwnerPasswordCredentialsGrant resourceOwnerPasswordCredentialsGrant=new ResourceOwnerPasswordCredentialsGrant(passwordTokenUrl);
grantTypes.add(resourceOwnerPasswordCredentialsGrant);
OAuth oAuth=new OAuthBuilder().name("oauth2")
.grantTypes(grantTypes).build();
//context
//scope方位
List<AuthorizationScope> scopes=new ArrayList<>();
scopes.add(new AuthorizationScope("read","read resources"));
scopes.add(new AuthorizationScope("write","write resources"));
scopes.add(new AuthorizationScope("reads","read all resources"));
scopes.add(new AuthorizationScope("writes","write all resources"));
SecurityReference securityReference=new SecurityReference("oauth2",scopes.toArray(new AuthorizationScope[]{}));
SecurityContext securityContext=new SecurityContext(Lists.newArrayList(securityReference),PathSelectors.ant("/**"));
//schemas
List<SecurityScheme> securitySchemes= Lists.newArrayList(oAuth);
//securyContext
List<SecurityContext> securityContexts= Lists.newArrayList(securityContext);
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.basePackage("com.danir.auth.controller"))
.paths(PathSelectors.any())
.build()
.securityContexts(securityContexts)
.securitySchemes(securitySchemes)
.apiInfo(apiInfo());
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder().title("OAuth2认证中心")
.description("<div style='font-size:14px;color:red;'>OAuth2认证、注销、获取验签公钥接口</div>")
.termsOfServiceUrl("https://www.danir.store")
.contact(new Contact("yl", "https://github.com/dnir", "994242104@qq.com"))
.license("Open Source")
.licenseUrl("https://www.apache.org/licenses/LICENSE-2.0")
.version("1.0.0")
.build();
}
}
参数详解
业务相关类中如果想要显示接口在在线文档里,需要加入相关注解。这里注解同swagger类似。
- @Api:用在请求的类上,表示对类的说明 tags=“说明该类的作用,可以在UI界面上看到的注解”
value=“该参数没什么意义,在UI界面上也看到,所以不需要配置” - @ApiOperation:用在请求的方法上,说明方法的用途、作用 value=“说明方法的用途、作用” notes=“方法的备注说明”
- @ApiImplicitParams:用在请求的方法上,表示一组参数说明
- @ApiImplicitParam:用在@ApiImplicitParams注解中,指定一个请求参数的各个方面 name:参数名
value:参数的汉字说明、解释 required:参数是否必须传 paramType:参数放在哪个地方 · header -->
请求参数的获取:@RequestHeader · query --> 请求参数的获取:@RequestParam ·
path(用于restful接口)–> 请求参数的获取:@PathVariable · body(不常用) · form(不常用)
dataType:参数类型,默认String,其它值dataType=“Integer” defaultValue:参数的默认值 - @ApiResponses:用在请求的方法上,表示一组响应
- @ApiResponse:用在@ApiResponses中,一般用于表达一个错误的响应信息 code:数字,例如400
message:信息,例如"请求参数没填好" response:抛出异常的类 - @ApiModel:用于响应类上,表示一个返回响应数据的信息 (这种一般用在post创建的时候,使用@RequestBody这样的场景,
请求参数无法使用@ApiImplicitParam注解进行描述的时候) - @ApiModelProperty:用在属性上,描述响应类的属性
配置效果如下
转载:https://blog.csdn.net/chongbaozhong/article/details/116293111
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