说明

  • 通过 SpringBoot 自带的 web 容器可以发布指定目录的静态资源

  • springboot 默认会发布 resources/static 目录下的资源

步骤

application.yml

配置发布资源地址：staticpath 为静态资源路径，例如图片、文件等；webapp为前端项目代码

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spring:
    path:
        staticpath: /Users/wangwz/IdeaProjects/tools/FileServer/files/static
        webapp: /Users/wangwz/IdeaProjects/tools/FileServer/files/webapp

WebMvcConfiguration.java

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package com.bjtcrj.files.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Configuration
public class WebMvcConfiguration implements WebMvcConfigurer {

    @Value("${spring.path.staticpath}")
    private String staticpath;
    @Value("${spring.path.webapp}")
    private String webapp;

    /**
     * 静态资源的配置 - 使得可以从磁盘中读取 Html、图片、视频、音频等
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**")
                .addResourceLocations("file:" + staticpath + "//", "file:" + webapp + "//");
    }

    @Bean
    public CorsFilter corsFilter() {
        final UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
        final CorsConfiguration corsConfiguration = new CorsConfiguration();
        //是否允许请求带有验证信息
        corsConfiguration.setAllowCredentials(true);
        // 允许访问的客户端域名
        corsConfiguration.addAllowedOrigin("*");
        // 允许服务端访问的客户端请求头
        corsConfiguration.addAllowedHeader("*");
        // 允许访问的方法名,GET POST等
        corsConfiguration.addAllowedMethod("*");
        urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
        return new CorsFilter(urlBasedCorsConfigurationSource);
    }

    /**
    * 添加Long转json精度丢失是配置
    * @Return: void
    */
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = new ObjectMapper();
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
        objectMapper.registerModule(simpleModule);
        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
        converters.add(jackson2HttpMessageConverter);
    }
}