Vue附件上传,需要用到<el-upload>标签,标签中的属性有很多,对应后台的action,设置上传文件个数及其他设置

在on-success函数中,是上传成功的回调函数,这个地方的处理是后台返回一个文件路径,该标签绑定了一个元素为:nowPersonInfo.filesrc

绑定这个元素的目的是为了再上传的时候,一个表单里还有其他的属性,将这个元素动态绑定以后,存一个文件路径,到时候要取出来的时候再读出来
后台代码:
@PostMapping("/upload")
@ResponseBody
public void uploadImg(@RequestParam(value="file",required=false)MultipartFile file,HttpServletRequest request, HttpServletResponse resp)throws Exception {
if(request.getCharacterEncoding()==null) {
request.setCharacterEncoding("UTF-8");
}
String fileName=file.getOriginalFilename();
//String suffxName=fileName.substring(fileName.lastIndexOf("."));
String filePath="F://icappImge/";
File dest = new File(filePath + fileName);
if (!dest.getParentFile().exists()) {
dest.getParentFile().mkdirs();
}
try {
file.transferTo(dest);
ServletOutputStream out=resp.getOutputStream();
OutputStreamWriter ow=new OutputStreamWriter(out,"UTF-8");
ow.write(filePath+fileName);
ow.flush();
ow.close();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
OutputStreamWriter会返回前端一个路径,这个路径就是之前绑定元素,上传成功回调函数中的值。
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下载附件的后台代码:
@RequestMapping("/upDown")
@ResponseBody
public void test(String pk,HttpServletRequest request,HttpServletResponse response) throws Exception{
/* 获取数据库中文件的路径 */
String filePath=service.getFilePath(pk);
int inex=filePath.lastIndexOf("/");
String fileName=filePath.substring(inex+1);
if(fileName!=null) {
String realPath = filePath;
File file = new File(realPath);
if(file.exists()) {
// 配置文件下载
response.setHeader("content-type", "application/octet-stream");
response.setContentType("application/octet-stream");
// 下载文件能正常显示中文
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
byte[] buffer = new byte[1024];
FileInputStream fis = null;
BufferedInputStream bis = null;
try {
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
OutputStream os = response.getOutputStream();
int i = bis.read(buffer);
while (i != -1) {
os.write(buffer, 0, i);
i = bis.read(buffer);
}
} catch (Exception e) {
}finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
}
传了一个pk,也就是一条数据的主键id,根据id查路径,再去下载,接上一篇文章的附件下载
