Swagger document export custom V2 / API docs interception

controller 

Swagger2ControllerWebMvc

package com.alipay.mychain.taas.apidoc;

import io.swagger.models.Swagger;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import springfox.documentation.service.Documentation;
import springfox.documentation.spring.web.DocumentationCache;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.mappers.ServiceModelToSwagger2Mapper;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = ApiDocApplication.class)
public class ApiDocApplicationTests {
    @Autowired
    private DocumentationCache documentationCache;
    @Autowired
    private ServiceModelToSwagger2Mapper mapper;


    @Test
    public void getDocumentation() {
        String groupName = Docket.DEFAULT_GROUP_NAME;
        Documentation documentation = documentationCache.documentationByGroup(groupName);
        Swagger swagger = mapper.mapDocumentation(documentation);
        System.out.println(swagger);
    }


}