SpringBoot配置项目访问路径URL的根路径，并访问项目本地图片

配置项目跟路径，默认localhost:8080，如添加了项目访问跟路径，上传文件返回的URL也需要包含此路径（没配置就不用写）

1、SpringBoot在2.0之前版本使用server.context-path

server.context-path=/demo

2、SpringBoot在2.0之后版本使用server.servlet.context-path

server.servlet.context-path=/demo

spring:
    # 启动环境 Dev|Test|Prod
    profiles:
        active: Dev
    freemarker:
        #模板引擎缓存
        cache: true
        #本地文件上传到的路径
    resources:
        static-locations: file:E:/demo/uploadPath/
        #文件对外暴露的访问路径
    mvc:
      static-path-pattern: /**

新建一个类，类名随意，实现WebMvcConfigurer 重写addResourceHandlers方法

/**
 * WebMvc配置
 * @author zhouzhou
 */
 
@Configuration
public class WebConfig implements WebMvcConfigurer {

	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {

        registry.addResourceHandler("/static/**").addResourceLocations(staticPrefix)
				.setCacheControl(CacheControl.maxAge(cacheTime, TimeUnit.DAYS).cachePublic());/flowable/**").addResourceLocations("classpath:/flowable/");
        /** 本地文件上传路径 */
//		registry.addResourceHandler("/profile/**").addResourceLocations("file:" + ShopConfig.getProfile(),"file:" + Global.getEditorPath());
        registry.addResourceHandler("/profile/**").addResourceLocations("file:" + FileUploadConfig.getProfile());
		/** swagger配置 */
		registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");
		registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
	}

	/**
	 	* 注册系统拦截器
	 */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(LicenseCheckInterceptor).addPathPatterns("/**")
        .excludePathPatterns("/static/**","/authInsu/**", "/profile/**","/image/**");
    	registry.addInterceptor(securityKeyInterceptorAdapter).addPathPatterns("/**");
        registry.addInterceptor(lockHandlerInterceptorAdapter).addPathPatterns("/**");
        registry.addInterceptor(repeatSubmitInterceptor).addPathPatterns("/**");
		if(ToolUtil.isNotEmpty(adapterRegistry)){
			for(String key: adapterRegistry.keySet()){
				registry.addInterceptor(SpringUtil.getBean(key)).addPathPatterns(adapterRegistry.get(key));
			}
		}
    }
}

文件上传工具类参考若依 FileUploadUtils ，FileUploadConfig也可参考，类名随意

http://localhost:8080：输入你自己的ip地址和端口，demo：是我自己项目登录访问路径

/**
 * 文件上传
 */
@Controller
@RequestMapping("/uploadFile")
public class UploadFileController {
    /**
     * @param file
     * @return
     */
    @PostMapping("/uploadFile")
    @ResponseBody
    public Map<String, Object> uploadFile(@RequestParam("file") MultipartFile file) {
        try
        {
            // 上传文件路径
            String filePath = FileUploadConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);

            String url = fileName;
            Map<String,Object> resultMap = new HashMap<>();
            //状态码，成功0，失败1
            resultMap.put("code","0");
            //提示消息
            resultMap.put("msg","上传成功");
            //数据（表格填充数据）
            resultMap.put("data",url);
            //分页总条数
            resultMap.put("count",0);

            return resultMap;
        }
        catch (Exception e){
            e.printStackTrace();
            return error("上传失败");
        }
    }
}