SpringCloud技术集成Swagger

在Spring Cloud项目中集成Swagger可以帮助开发者生成API文档，并提供在线测试功能。以下是一个简单的例子，展示如何在Spring Cloud项目中集成Swagger 2.x版本。

1. 添加Swagger依赖到你的pom.xml文件中：

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

2. 创建一个Swagger配置类：

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
 
import java.util.ArrayList;
 
@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
                .select()
                .apis(RequestHandlerSelectors.any())
                .paths(PathSelectors.any())
                .build()
                .apiInfo(apiInfo());
    }
 
    private ApiInfo apiInfo() {
        return new ApiInfo(
                "My API Title",
                "My API Description",
                "1.0",
                "urn:tos",
                DEFAULT_CONTACT,
                "Apache 2.0",
                "http://www.apache.org/licenses/LICENSE-2.0",
                new ArrayList<>()
        );
    }
}

3. 在你的Controller类中使用Swagger注解来描述API：

import io.swagger.annotations.*;
import org.springframework.web.bind.annotation.*;
 
@RestController
@Api(value = "User Controller", description = "Operations about user")
public class UserController {
 
    @ApiOperation(value = "Get user by ID", response = User.class)
    @ApiResponses(value = {
        @ApiResponse(code = 400, message = "Invalid ID supplied"),
        @ApiResponse(code = 404, message = "User not found")
    })
    @GetMapping("/users/{id}")
    public User getUser(@PathVariable("id") Long id) {
        // ...
        retur