package com.imooc.demo.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class FileStaticConfig extends WebMvcConfigurerAdapter {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
         *  /source/xxx   指文件的访问方式  如：localhost:8080/source/abc.wav
         *  file:d/voice/  指静态文件存放在服务器上的位置
        registry.addResourceHandler("/source/**").addResourceLocations("file:"+"d:/voice/");
在SpringBoot2.0及Spring 5.0 WebMvcConfigurerAdapter已被废弃
官方推荐WebMvcConfigurer，代码如下：
package com.imooc.demo.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class FileStaticConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
         *  /source/xxx   指文件的访问方式  如：localhost:8080/source/abc.wav
         *  file:d/voice/  指静态文件存放在服务器上的位置
        registry.addResourceHandler("/source/**").addResourceLocations("file:"+"d:/voice/");