在spring boot项目中配置Swagger2配置好了但是访问确实404SwaggerConfig中的注入方法也执行了还是访问不到页面。究其原因是MVC没有找到swagger-ui包中的swagger-ui.html文件和css样式、js等文件。

解决⽅案

⽅案1. 降低Swagger2的使用版本

⽅案2. 使⽤配置⼀下+swagger-ui.html+指定的css⽬录。

package io.github.talelin.latticy.config;

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

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // 解决静态资源⽆法访问
        registry.addResourceHandler("/**")
                .addResourceLocations("classpath:/static/");
        // 解决swagger⽆法访问
        registry.addResourceHandler("/swagger-ui.html")
                .addResourceLocations("classpath:/META-INF/resources/");
        // 解决swagger的js⽂件⽆法访问
        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }
}

Swagger2的配置步骤如下

一、引入依赖

<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>

二、编写配置文件

import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import springfox.documentation.RequestHandler;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    // 定义分隔符
    private static final String splitor = ";";

    @Bean
    Docket docket() {
        System.out.println("Swagger===========================================");

        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(basePackage("io.github.talelin.latticy.controller.v1"))			//这里采用包扫描的方式来确定要显示的接口
                // .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))                         //这里采用包含注解的方式来确定要显示的接口
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("CMS")
                .description("电商小程序 CMS Api文档")
                .termsOfServiceUrl("https://blog.csdn.net/xfx_1994")
                .version("1.0")
                .build();
    }

    public static Predicate <RequestHandler> basePackage(final String basePackage) {
        return input -> declaringClass(input).transform(handlerPackage(basePackage)).or(true);
    }

    private static Function <Class<?>, Boolean> handlerPackage(final String basePackage)     {
        return input -> {
            // 循环判断匹配
            for (String strPackage : basePackage.split(splitor)) {
                boolean isMatch = input.getPackage().getName().startsWith(strPackage);
                if (isMatch) {
                    return true;
                }
            }
            return false;
        };
    }

    private static Optional<? extends Class<?>> declaringClass(RequestHandler input) {
        return Optional.fromNullable(input.declaringClass());
    }

}

如果报如下错误加上文章开头的配置即可SwaggerConfig记得实现WebMvcConfigurer接口才可以覆盖实现默认的配置的addResourceHandlers方法