文件上传下载工具类

2022-06-14 19:54:59 浏览数 (1)

文件上传

代码语言:javascript复制
application.properties 文件设置 (默认设置 1MB)
#设置上传文件的大小
spring.servlet.multipart.max-file-size=100MB
spring.servlet.multipart.maxRequestSize=100MB

public String uploadFile(@RequestParam("file") MultipartFile file) throws Exception {
        if (file == null || file.isEmpty()) {
            throw new Exception("未选择需上传的文件");
        }

        String filePath = new File("./apiFile").getAbsolutePath();
        File fileUpload = new File(filePath);
        if (!fileUpload.exists()) {
            fileUpload.mkdirs();
        }
        String fileName = serviceUuid  file.getOriginalFilename();
        fileUpload = new File(filePath, fileName);
        //判断文件是否存在,如果存在
        if (fileUpload.exists()) {
            //首先删除本地文件
            fileUpload.delete();
        }
        try {
            //将文件上传至本地
            file.transferTo(fileUpload);
            return  "上传成功"; //ResponseData.success("上传成功");
        } catch (IOException e) {
            throw new Exception("上传文件到服务器失败:"   e.toString());
        }

    }

文件下载

代码语言:javascript复制
application.properties 文件设置 (默认设置 1MB)
#设置上传文件的大小
spring.servlet.multipart.max-file-size=100MB
spring.servlet.multipart.maxRequestSize=100MB

public String uploadFile(@RequestParam("file") MultipartFile file, @RequestParam("serviceUuid") String serviceUuid) throws Exception {
        if (file == null || file.isEmpty()) {
            throw new Exception("未选择需上传的文件");
        }

        String filePath = new File("./apiFile").getAbsolutePath();
        File fileUpload = new File(filePath);
        if (!fileUpload.exists()) {
            fileUpload.mkdirs();
        }
        String fileName = serviceUuid  file.getOriginalFilename();
        fileUpload = new File(filePath, fileName);
        //判断文件是否存在,如果存在
        if (fileUpload.exists()) {
            //首先删除本地文件
            fileUpload.delete();
        }
        try {
            //将文件上传至本地
            file.transferTo(fileUpload);
            return  "上传成功"; //ResponseData.success("上传成功");
        } catch (IOException e) {
            throw new Exception("上传文件到服务器失败:"   e.toString());
        }

    }

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