无法使用MongoDb GridFs上传文件 [英] Could not Upload File using MongoDb GridFs
问题描述
我是Spring-Boot的新手,我试图将文件上传到Mongodb数据库,保存其objectId并将其链接到我的文档,以便以后下载. 这是我班的人:
I'm new to Spring-Boot,i'm trying to upload file to Mongodb Database, save its objectId and link it to my document, in order to download it Later. Here is my class Person:
@Document
public class Person {
@Id
private String id;
private String firstName;
private String lastName;
private String age;
private String filename;
private ObjectId file;
....}
这是我的控制器方法:
@RequestMapping(value="/addperson",method=RequestMethod.POST)
public String ajout(Model model,@Valid PersonForm pf){
Person p=new Person(pf.getFirstname(),pf.getLastName(),pf.getAge());
InputStream inputStream=null;
try {
inputStream = new FileInputStream("E:/usb/");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
p.setFilename(pf.getFilename());
repository.linkFileToMyDoc(p,inputStream,p.getFilename());
repository.save(p);
model.addAttribute("PersonForm",pf);
return "personview";
}
我想知道这是否是最好的方法. 我得到的错误是对"E:/usb/"的访问被拒绝. 谁能帮忙
I wonder if it is the best method to do it. the error i get is that access to "E:/usb/" is denied. Can anyone help please
推荐答案
在阅读MultipartFile文档后,我找到了解决方案.我将文件上传到服务器,然后将其完全控制到目录"E:/usb/",然后将其传输到目录.这是我的控制器方法:
i found the solution after reading MultipartFile documentation. I uploaded file to server and then transfered it to directory,after allowing total control to directory "E:/usb/". this is my controller method:
Person p=new Person(pf.getFirstname(),pf.getLastName(),pf.getAge());
try {
File dest = null;
String str = "C:/tt/"+pf.getFile().getOriginalFilename();
File dir = new File(str);
dir.createNewFile();
pf.getFile().transferTo(dir);
p.setFilename(str);
InputStream inputStream=pf.getFile().getInputStream();
repository.linkFileToMyDoc(p,inputStream,pf.getFile().getOriginalFilename());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
repository.save(p);
model.addAttribute("PersonForm",pf);
return "personview";
}
linkFileToMydoc方法,您可以在以下链接中找到它: 如何使用@DbRef注释来引用GridFSFile(春季数据mongodb )
the linkFileToMydoc method, you'll find it in this link: How to reference GridFSFile with @DbRef annotation (spring data mongodb)
这篇关于无法使用MongoDb GridFs上传文件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!