Question

我试图研究和理解文档，但无法解决我的问题。

我有一个允许我选择和上传多个文件的ModelForm。但是，保存后，尽管有多个选择，但只有1个文件保存到我的媒体根文件夹中。

我的猜测是，getlist中所有文件的文件名都是相同的（因为它们会同时上传），它会以某种方式相互覆盖，最终只保存1个媒体。感谢社区的帮助，谢谢！

package com.viremp.component;

import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.time.LocalDate;

import javax.imageio.ImageIO;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.SchedulerContext;

import com.viremp.core.domain.Screenshot;
import com.viremp.core.domain.User;
import com.viremp.core.repository.ScreenshotRepository;
import com.viremp.core.repository.UserRepository;
import com.viremp.core.repository.impl.ScreenshotRepositoryImpl;
import com.viremp.core.repository.impl.UserRepositoryImpl;

public class JobStoredScreenShot implements Job {

String email;
User user = new User();

public void setEmail(String Email) {

    this.email = Email;
    System.out.println("in job stored class email is: " + email);

    user.setEmail(email);
}

@Override
public void execute(JobExecutionContext arg0) throws JobExecutionException {

    try {

        SchedulerContext schedulerContext = arg0.getScheduler().getContext();
        // Below line gets the value from context.
        // Just get it and cast it in to correct type
        String email = (String) schedulerContext.get("email");
        System.out.println(email);
        BufferedImage image = new Robot()
                .createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(image, "png", baos);
        baos.flush();
        byte[] imageInByte = baos.toByteArray();
        baos.close();

        System.out.println("in execute " + user.getEmail() + ".................: " + email);
        UserRepository userRepository = new UserRepositoryImpl();
        user = userRepository.getUserByEmail(email);
        System.out.println("USER IS: " + user.getUsername() + " id is : " + user.getId());
        // byte[] buffer = (((DataBufferByte)
        // (image).getRaster().getDataBuffer()).getData());
        InputStream inputStream = new ByteArrayInputStream(imageInByte);
        LocalDate localDate = LocalDate.now();
        Screenshot screenshot = new Screenshot();
        screenshot.setInput(inputStream);
        screenshot.setScreenshotName(user.getUsername());
        screenshot.setUser(new User());
        screenshot.getUser().setId(user.getId());
        screenshot.setScreenShotTime(java.sql.Date.valueOf(localDate));
        System.out.println("id is " + 1l);
        ScreenshotRepository screenshotRepository = new ScreenshotRepositoryImpl();
        screenshotRepository.create(screenshot);
        ImageIO.write(image, "png", new File("d:\\screenshot.png"));

        System.out.println("screenshot taken");
    } catch (Exception e) {
        e.printStackTrace();
    }
}

}

-

forms.py
class FileFieldForm(forms.ModelForm):
stuff_image = forms.FileField(widget=forms.ClearableFileInput(attrs={'multiple': True}))
class Meta:
    model = Thing
    fields = ('title', 'description', 'quantity','stuff_image')

-

model.py
def generate_filename(instance, filename):
ext = filename.split('.')[-1]
return '' + str(int(time())) + '.' + ext

class Thing(models.Model):  
title = models.CharField(max_length=255)
description = models.TextField(blank = True)
quantity = models.IntegerField(blank =True) 
creation_date = models.DateTimeField(auto_now_add=True)
stuff_image = models.FileField(upload_to=generate_filename)

def __unicode__(self):
    return self.title

class Meta:
    ordering = ['title']

@receiver(post_delete, sender=Thing)
def stuff_post_delete_handler(sender, **kwargs):
Thing = kwargs['instance']
storage, path = Thing.stuff_image.storage, Thing.stuff_image.path
storage.delete(path)

Answer 1

如果要将多个图像链接到Thing模型，则需要使用Image模型的ForeignKey创建Thing模型。 FileField一次只能与一个文件相关。

Answer 2

要在django中上传多个图像/文件，请使用django-multiupload包，请参阅（文档）[https://pypi.python.org/pypi/django-multiupload]或（GitHub Page）[https://github.com/Chive/django-multiupload]。只需按照说明和示例操作即可。工作完美无缺。

Django上传多个媒体并保存

2 个答案: