SpringBoot图片上传与路径映射-优快云博客

本文链接：https://blog.youkuaiyun.com/duck_zixi/article/details/103902882

有时候我们经常遇到上传到本地,在回显的时候找不到资源路径显示为(项目路径+图片路径)导致图片路径不正确

次介绍是根据springboot做为前提的配置

首先配置文件中添加

file.staticAccessPath=/upload/**
file.uploadFolder=E:/upload/
file.url=/upload/

添加映射成服务的ben

/**
 * 图片绝对地址与虚拟地址映射
 */

@Configuration
public class WebConfigurer  extends WebMvcConfigurerAdapter {

    @Value("${file.staticAccessPath}")
    private String staticAccessPath;
    @Value("${file.uploadFolder}")
    private String uploadFolder;

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler(staticAccessPath).addResourceLocations("file:" + uploadFolder);
    }

}

后台代码使用

//上传真实地址
@Value("${file.uploadFolder}")
private String uploadFolder;
//项目地址
@Value("${webSocketServerIp}")
private String webSocketServerIp;

//映射地址
@Value("${file.url}")
private String url;

@RequestMapping(value = "/upload")
@ResponseBody
public Map<String, Object> upload(@RequestParam(value = "files", required = false) List<MultipartFile> files, HttpServletRequest request) {
    Map<String, Object> resultMap = Maps.newHashMap();
    String imgUrls[] = new String[files.size()];
    try {
        if (files != null && files.size() > 0) {
            for (int i = 0; i < files.size(); i++) {
                String url1=webSocketServerIp+url;
                String filezurl = FileUtil.uploadFile(uploadFolder, files.get(i));
                imgUrls[i] = url1+filezurl;
            }
        }
        resultMap.put("errno", 0);
        resultMap.put("data", imgUrls);
        return resultMap;
    }catch (Exception e){
        resultMap.put("errno", 0);
        return resultMap;
    }
}

public static String  uploadFile(String path, MultipartFile file) throws Exception{
    File file1=new File(path);
    if(!file1.exists()){
        file1.mkdirs();
    }
    String fileName = file.getOriginalFilename();
    String suffixName = fileName.substring(fileName.lastIndexOf("."));
    // 文件上传后的路径
    fileName = UUID.randomUUID() + suffixName;
    String uppath=path+fileName;
    File targetFile = new File(uppath);
    file.transferTo(targetFile);
    return  fileName;
}

imgUrls里面保存的即为项目地址+映射路径后的图片地址

jsp页面渲染后即可读到正确的图片地址.tomcat不用配置图片映射

至此使用结束