外部图片映射

#文件上传路径
file.upload.path: D:/myeclipsejavawebworkspaces/voteWeb2/images/
file.upload.path.relative: /images/
imagesPath: file:/D:/myeclipsejavawebworkspaces/voteWeb2/images/

package com.xsz.common.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

public class MyWebAppConfigurer implements WebMvcConfigurer {
    @Value("${imagesPath}")
    private String mImagesPath;

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        if (mImagesPath.equals("") || mImagesPath.equals("${imagesPath}")) {
            String imagesPath = MyWebAppConfigurer.class.getClassLoader().getResource("").getPath();
            if (imagesPath.indexOf(".jar") > 0) {
                imagesPath = imagesPath.substring(0, imagesPath.indexOf(".jar"));
            } else if (imagesPath.indexOf("classes") > 0) {
                imagesPath = "file:" + imagesPath.substring(0, imagesPath.indexOf("classes"));
            }
            imagesPath = imagesPath.substring(0, imagesPath.lastIndexOf("/")) + "/images/";
            mImagesPath = imagesPath;
        }
        // LoggerFactory.getLogger(WebAppConfig.class).info("imagesPath="+mImagesPath);
        registry.addResourceHandler("/images/**").addResourceLocations(mImagesPath);
        // TODO Auto-generated method stub
    }
}