springboot 之集成Swagger2

前言

一直没机会做spring生态圈的框架，公司选择的是一些小众的微服务，鉴于此考虑，丰富自己的技术栈，花了两天时间从网上各网站上学习了springboot一些基础知识。
本章只介绍springboot微服务集成swagger2，用于后端工程师开发过程中调试接口。

环境准备

• IntelliJ IDEA
• 前一章中搭建的微服务框架

开始集成

1. pom.xml中增加依赖包

   
   依赖包.png

        <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. 引入swaggerUI静态资源文件，将资源拷贝到resources/static目录下，否则会报404，找不到资源，资源下载路径见：//download.csdn.net/download/xuefei2290819/12043546
   

   swagger静态资源.png

3. 与DemoApplication.java同级目录新建SwaggerConfig类

   
   SwaggerConfig.png

package com.example.demo;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
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;

import java.util.List;

/**
 * 类功能描述：<br>
 * <ul>
 * <li>类功能描述1<br>
 * <li>类功能描述2<br>
 * <li>类功能描述3<br>
 * </ul>
 * 修改记录：<br>
 * <ul>
 * <li>修改记录描述1<br>
 * <li>修改记录描述2<br>
 * <li>修改记录描述3<br>
 * </ul>
 *
 * @author xuefl
 * @version 5.0 since 2019-12-19
 */
@Configuration
@EnableSwagger2
public class SwaggerConfig implements WebMvcConfigurer {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/statics/**").addResourceLocations("classpath:/statics/");
        // 解决 SWAGGER 404报错
        registry.addResourceHandler("/static/index.html").addResourceLocations("classpath:/META-INF/resources/static/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {

    }

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())//生成文档的api对象定义
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.example.demo.controller"))//扫描生成文档的包路径
                //.paths(PathSelectors.ant("/*Api/*"))//生成文档的类访问路径，就是controller类里@RequestMapping("orderApi")
                .paths(PathSelectors.any())
                .build();
        //.host(Host);//配置swagger前缀
    }


    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("springboot-demo构建restful接口api")//文档标题
                .description("此API提供接口调用")//文档说明
                .version("2.0").build();//版本号
    }
}

4. DemoApplication中增加@EnableSwagger2注解

   
   EnableSwagger2.png

package com.example.demo;

import lombok.extern.slf4j.Slf4j;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@SpringBootApplication
@EnableSwagger2
@MapperScan("com.example.demo.mapper")
@EnableScheduling
@EnableTransactionManagement
@Slf4j
public class DemoApplication {

    public static void main(String[] args) {
        log.info("DemoApplication run enter...");
        SpringApplication.run(DemoApplication.class, args);
    }

}

5. 运行DemoApplication，启动服务，访问 http://localhost:8081/api/
   运行结果.png