1. 新建一个spring-boot项目，本文不做搭建

2.pom文件中引入swagger-bootstrap-ui依赖

只需要引入这一个依赖就够了

       <!--整合Knife4j-->
       <dependency>
              <groupId>com.github.xiaoymin</groupId>
              <artifactId>knife4j-spring-boot-starter</artifactId>
              <version>2.0.4</version>
        </dependency>

        <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>

import com.google.common.base.Predicates;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.service.Parameter;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.ApiSelectorBuilder;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.List;

@Configuration
@EnableSwagger2
public class Swagger2Config {
    @Bean
    public Docket createRestApi(){
        ParameterBuilder tokenPar = new ParameterBuilder();
        List<Parameter> pars = new ArrayList<Parameter>();
        tokenPar.name("Authorization").description("令牌").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        pars.add(tokenPar.build());
        tokenPar.name("source").description("登录源").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        pars.add(tokenPar.build());
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .groupName("sso")
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.xxxxxx.org.sso.controller"))
                .paths(PathSelectors.any())
                .build().globalOperationParameters(pars);
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("sso单点登录系统构建文档")
                .description("公司内部使用")
                .contact(new Contact("xxxx", "", "xuj@xxxxx.com"))
                .license("xxxxxxxxx有限公司")
                .licenseUrl("http://www.xxxxx.com")
                .version("1.0")
                .build();
    }

}