SpringBoot上傳圖片操做

    首先有個上傳文件的工具類

/** * 文件上傳 * @param file * @param filePath * @param fileName * @throws Exception */
public static void uploadFile(byte[] file, String filePath, String fileName) throws Exception { File targetFile = new File(filePath); if(!targetFile.exists()){ targetFile.mkdirs(); } FileOutputStream out = new FileOutputStream(filePath+File.separator+fileName); out.write(file); out.flush(); out.close(); }

 

2. 配置真實路徑與虛擬路徑的映射關係

public class TestApplication extends WebMvcConfigurerAdapter {


    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }


    @Value("${upload.filePath}")
    private String filePath;


    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry){
        registry.addResourceHandler("/");
        registry.addResourceHandler("/images/**").addResourceLocations("file:"+filePath);
        super.addResourceHandlers(registry);
    }

}

 3. 上傳的主要方法實現

@PostMapping("/test/common/uploadFile")
    public String uploadFile(
                    @RequestParam("file") MultipartFile file, HttpServletRequest request) {

        try {
               //定義相對路徑
            String relativePath = File.separator+DateUtil.getToday()+File.separator;
            String path = filePath + relativePath;
            String fileName = file.getOriginalFilename();
            String uuid = UUID.randomUUID().toString().replaceAll("-","");
            String suffix = fileName.substring(fileName.lastIndexOf("."));


               //隨機生成新的文件名，防止文件名衝突或者中文亂碼問題
            String newFileName = uuid+suffix;

               //調用上傳方法將文件上傳到物理路徑下
            FileUtil.uploadFile(file.getBytes(),path,newFileName);


            //可選：將圖片路徑存儲起來爲了按期清理圖片（能夠存儲到非關係型數據庫中，如mongodb）
            PicturePathDTO dto = new PicturePathDTO();
            dto.setPath(images+relativePath+newFileName);
            dto.setCreateTime(new Date());
            picturePathDao.save(dto);


            //返回虛擬路徑
            return (images+relativePath+newFileName);

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }