Question

朋友我的代码有问题

我想将MultipartFile转换为pdf并在特定位置下载，任何人都可以帮助我

@RequestMapping(value = "/uploadFile", method = RequestMethod.PUT, consumes = { "multipart/form-data" })
public Map<String, String> uploadFile(@RequestParam("uploadfile") MultipartFile pdfFile) throws Exception {

    String url = pdfFile + "FileName";
    File fileToSave = new File(url);
    fileToSave.createNewFile();

    FileOutputStream fos = new FileOutputStream(fileToSave);
    fos.write(pdfFile.getBytes());
    fos.close();

    return null;
}

Answer 1

请尝试使用此功能：

   public static File convert(MultipartFile file) throws IOException {
    File convFile = new File(file.getOriginalFilename());
    convFile.createNewFile();
    FileOutputStream fos = new FileOutputStream(convFile);
    fos.write(file.getBytes());
    fos.close();
    return convFile;
    }

Answer 2

>>> import pandas as pd
>>>
>>> df = pd.read_csv("foo.txt", sep="\t")
>>> df
   A  B   C
0  1  4   3
1  1  5   4
2  1  2  10
3  2  7   2
4  2  4   4
5  2  6   6
>>>
>>> def calc(data):
...         length = len(data['B'])
...         mx = data['B'][0]
...         nx = data['C'][0]
...         for i in range(1,length):
...                 my = data['B'][i]
...                 ny = data['C'][i]
...                 nx = nx + ny
...                 mx=(mx*nx+my*ny)/(nx+ny)
...         return(mx)
...
>>> result = []
>>> for name, group in df.groupby('A'):
...         group = pd.DataFrame(group).reset_index()
...         out = calc(group)
...         result.append(out)
...
>>> result
[3.488215488215488, 5.866666666666666]

.......................

Thanks, guys , I got Soluation ....Following code is going to work

MultipartFile到PDF转换并下载此文件

2 个答案: