Springboot添加静态资源映射addResourceHandlers，可实现url访问

• 直接上代码

import org.springframework.beans.factory.annotation.Value;
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 ResourceConfigAdapter implements WebMvcConfigurer {
    @Value("${linux.download.path}")
    private String linuxDir;

    @Value("${win.download.path}")
    private String winDir;
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {

        String os = System.getProperty("os.name");
        if (os.toLowerCase().startsWith("win")) {
            //windows系统
            //第一个方法设置访问路径前缀，第二个方法设置资源路径
            registry.addResourceHandler("/images/**").
                    addResourceLocations("file:"+winDir);
        }else{//linux系统
            registry.addResourceHandler("/images/**").
                    addResourceLocations("file:"+linuxDir);
        }
    }
}