springboot 使用swagger生成接口説明文檔

　　1 創建一個新的mvn項目並添加核心依賴

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- swagger2 api tools-->
        <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>
        <!-- end-->

2 創建swagger配置類：

package com.reason.gsny.config;

import com.google.common.collect.Sets;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * api 文档与测试
 * 访问地址为： http://ip:port/swagger-ui.html
 * @author leon
 */
@Configuration
// 开启swagger api文档
@EnableSwagger2
public class Swagger2 {
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                //协议，http或https
                .protocols(Sets.newHashSet("http"))
                .apiInfo(apiInfo())
                .select()
                //会在这个路径下扫描controller定义
                .apis(RequestHandlerSelectors.basePackage("com.reason.gsny"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("REST接口定义")
                .version("1.0")
                .description("用于测试RESTful API")
                .build();
    }
}

3 在api方法中使用 @ApiOperation 注解

package com.reason.gsny.api;

import com.reason.gsny.entity.jwt.AuthenticationRequest;
import com.reason.gsny.entity.jwt.AuthenticationResponse;
import com.reason.gsny.support.MyUserDetailsService;
import com.reason.gsny.util.JwtUtil;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api/v1")
public class AuthenticateApi {
// @ApiOperation用於生成api文檔説明
    @ApiOperation(value="helloWorld", notes="helloWorld 詳情説明")
    @ResponseStatus(HttpStatus.OK)
    @RequestMapping(value = "/helloWorld", method = RequestMethod.POST)
    public String hello {
        return "helloWorld";
    }

}

4 啓動springboot，訪問 http://ip:port/swagger-ui.html 即可

5 錯誤處理：打不開swagger-ui文檔説明頁面，可能的原因是springboot的靜態資源文件攔截：

package com.reason.gsny.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * 靜態資源配置
 */
@Configuration
public class StaticResourceConfiguration implements WebMvcConfigurer {

    private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
//            "classpath:/build/",
            "classpath:/META-INF/*/", "classpath:/resources/",
            "classpath:/static/", "classpath:/public/",  };

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**")
                .addResourceLocations(CLASSPATH_RESOURCE_LOCATIONS);

        // 重新注冊swagger的靜態資源地址
        registry.addResourceHandler("swagger-ui.html")
                .addResourceLocations("classpath:/META-INF/resources/");

        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");

    }
}

 6 生產markdown與ascii説明文檔

　　首先添加依賴

     <dependency>
            <groupId>io.github.swagger2markup</groupId>
            <artifactId>swagger2markup</artifactId>
            <version>1.3.3</version>
        </dependency>

package com.reason.gsny;

import io.github.swagger2markup.GroupBy;
import io.github.swagger2markup.Language;
import io.github.swagger2markup.Swagger2MarkupConfig;
import io.github.swagger2markup.Swagger2MarkupConverter;
import io.github.swagger2markup.builder.Swagger2MarkupConfigBuilder;
import io.github.swagger2markup.markup.builder.MarkupLanguage;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

import java.net.URL;
import java.nio.file.Paths;

/**
 * 訪問本地api地址
 * 我的端口是1978，故訪問 http://127.0.0.1:1978/v2/api-docs
 * @author leon
 */
@SpringBootTest
class GsnyApplicationTests {

    @Test
    void contextLoads() {

    }
    /**
     * 生成AsciiDocs格式文档
     * @throws Exception
     */
    @Test
    public void generateAsciiDocs() throws Exception {
        //    输出Ascii格式
        Swagger2MarkupConfig config = new Swagger2MarkupConfigBuilder()
                .withMarkupLanguage(MarkupLanguage.ASCIIDOC)
                .withOutputLanguage(Language.ZH)
                .withPathsGroupedBy(GroupBy.TAGS)
                .withGeneratedExamples()
                .withoutInlineSchema()
                .build();

        Swagger2MarkupConverter.from(new URL("http://127.0.0.1:1978/v2/api-docs"))
                .withConfig(config)
                .build()
                .toFolder(Paths.get("./docs/asciidoc/generated"));
    }

    /**
     * 生成Markdown格式文档
     * @throws Exception
     */
    @Test
    public void generateMarkdownDocs() throws Exception {
        //    输出Markdown格式
        Swagger2MarkupConfig config = new Swagger2MarkupConfigBuilder()
                .withMarkupLanguage(MarkupLanguage.MARKDOWN)
                .withOutputLanguage(Language.ZH)
                .withPathsGroupedBy(GroupBy.TAGS)
                .withGeneratedExamples()
                .withoutInlineSchema()
                .build();

        Swagger2MarkupConverter.from(new URL("http://localhost:1978/v2/api-docs"))
                .withConfig(config)
                .build()
                .toFolder(Paths.get("./docs/markdown/generated"));
    }
    /**
     * 生成Confluence格式文档
     * @throws Exception
     */
    @Test
    public void generateConfluenceDocs() throws Exception {
        //    输出Confluence使用的格式
        Swagger2MarkupConfig config = new Swagger2MarkupConfigBuilder()
                .withMarkupLanguage(MarkupLanguage.CONFLUENCE_MARKUP)
                .withOutputLanguage(Language.ZH)
                .withPathsGroupedBy(GroupBy.TAGS)
                .withGeneratedExamples()
                .withoutInlineSchema()
                .build();

        Swagger2MarkupConverter.from(new URL("http://localhost:1978/v2/api-docs"))
                .withConfig(config)
                .build()
                .toFolder(Paths.get("./docs/confluence/generated"));
    }

    /**
     * 生成AsciiDocs格式文档,并汇总成一个文件
     * @throws Exception
     */
    @Test
    public void generateAsciiDocsToFile() throws Exception {
        //    输出Ascii到单文件
        Swagger2MarkupConfig config = new Swagger2MarkupConfigBuilder()
                .withMarkupLanguage(MarkupLanguage.ASCIIDOC)
                .withOutputLanguage(Language.ZH)
                .withPathsGroupedBy(GroupBy.TAGS)
                .withGeneratedExamples()
                .withoutInlineSchema()
                .build();

        Swagger2MarkupConverter.from(new URL("http://localhost:1978/v2/api-docs"))
                .withConfig(config)
                .build()
                .toFile(Paths.get("./docs/asciidoc/generated/all"));
    }

    /**
     * 生成Markdown格式文档,并汇总成一个文件
     * @throws Exception
     */
    @Test
    public void generateMarkdownDocsToFile() throws Exception {
        //    输出Markdown到单文件
        Swagger2MarkupConfig config = new Swagger2MarkupConfigBuilder()
                .withMarkupLanguage(MarkupLanguage.MARKDOWN)
                .withOutputLanguage(Language.ZH)
                .withPathsGroupedBy(GroupBy.TAGS)
                .withGeneratedExamples()
                .withoutInlineSchema()
                .build();

        Swagger2MarkupConverter.from(new URL("http://localhost:1978/v2/api-docs"))
                .withConfig(config)
                .build()
                .toFile(Paths.get("./docs/markdown/generated/all"));
    }
}

注意 需要啓動springboot后再運行測試，否則會找不到網址而抛出異常