本地文件轉爲MultipartFile類型

1、所需jar

commons-fileupload-1.2.2.jar

2、轉換代碼

   //本地文件轉爲MultipartFile類型(文件路徑)
    private static MultipartFile getMulFileByPath(String picPath) {  
        FileItem fileItem = createFileItem(picPath);  
        MultipartFile mfile = new CommonsMultipartFile(fileItem);  
        return mfile;  
    }  
  
    private static FileItem createFileItem(String filePath)  
    {  
        FileItemFactory factory = new DiskFileItemFactory(16, null);  
        String textFieldName = "textField";  
        int num = filePath.lastIndexOf(".");  
        String extFile = filePath.substring(num);  
        FileItem item = factory.createItem(textFieldName, "text/plain", true,  
            "MyFileName" + extFile);  
        File newfile = new File(filePath);  
        long fileSize = newfile.length();
        int bytesRead = 0;  
        byte[] buffer =new byte[(int) fileSize];
        try  
        {  
            FileInputStream fis = new FileInputStream(newfile);  
            OutputStream os = item.getOutputStream();  
            while ((bytesRead = fis.read(buffer, 0,  buffer.length))!= -1)  
            {  
                os.write(buffer, 0, bytesRead);  
            }  
            os.close();  
            fis.close();  
        }  
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
        return item;  
    } 

 3、調用

        //讀取文件流
        MultipartFile file = getMulFileByPath("文件路徑");