Question

以前它是图像的System.Drawing命名空间。我不确定在asp.net 5中我需要哪个库来拥有Image类型的对象。

Answer 1

有很多库可以填补这个空白，即使System.Drawing没有替代品。

我遇到了同样的问题而且我正在查看这些库：

<强>更新

看起来这些lib还没有准备好在没有System.Drawing的情况下工作。有报告称，如果服务器上安装了较旧的.Net版本，您仍然可以引用System.Drawing。将以下位添加到project.json：

"frameworks": {
    "aspnet50": {
         "dependencies": {
             "System.Drawing": ""
        }
    }
}

此处有关此主题的更多信息：https://github.com/imazen/Graphics-vNext。该讨论的要点是，还没有真正的替代方案。

更新2

Scott Hanselman blogged对此有所了解。似乎服务器端图像处理在此时根本不是Microsoft的优先事项。

所以现在最好的选择仍然是上面提到的项目。

Answer 2

我从 nuget 添加了这个包并解决了这个问题

import requests
import sqlite3
import Keywords
from bs4 import BeautifulSoup
from time import sleep
from random import randint
from datetime import datetime
from datetime import timedelta


# ----- Initializing Database & Notification Service -----
connect = sqlite3.connect('StoredArticles.db')
cursor = connect.cursor()
print("Connection created.")


try:
    cursor.execute('''CREATE TABLE articlestable (article_time TEXT, article_title TEXT, article_keyword TEXT, 
    article_link TEXT, article_description TEXT, article_entry_time DATETIME)''')
    cursor.execute('''CREATE UNIQUE INDEX index_article_link ON articlestable(article_link)''')
except:
    pass
print("Table ready.")

while True:

    class Scrapers:

        # ----- Initialize Keywords -----
        def __init__(self):
            self.article_keyword = None
            self.article_title = None
            self.article_link = None
            self.article_time = None
            self.article_time_drop = None
            self.article_description = None
            self.article_entry_time = None
            self.headers = {
                'User-Agent':
                    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko)' +
                    'Version/14.0.1 Safari/605.1.15'
            }

        def scraping_globenewswire(self, page):
            url = 'https://www.globenewswire.com/NewsRoom?page=' + str(page)
            r = requests.get(url, headers=self.headers)
            soup = BeautifulSoup(r.text, 'html.parser')

            articles = soup.select('.main-container > .row')
            print("GlobeNewswire - Scraping page " + str(page) + "...")
            sleep(randint(0, 1))

            for item in articles:
                self.article_title = item.select_one('a[data-autid="article-url"]').text.strip()
                self.article_time = item.select_one('span[data-autid="article-published-date"]').text.strip()
                self.article_link = 'https://www.globenewswire.com' + \
                                    item.select_one('a[data-autid="article-url"]')['href']
                self.article_description = item.select_one('span', _class='pagging-list-item-text-body').text.strip()
                self.article_entry_time = datetime.now()
                cursor.execute('''INSERT OR IGNORE INTO articlestable VALUES(?,?,?,?,?,?)''',
                               (self.article_time, self.article_title, self.article_keyword, self.article_link,
                                self.article_description, self.article_entry_time))
                print(self.article_title)
            return


    # ----- End of Loops -----

    scraper = Scrapers()

    # ----- Range of Pages to scrape through -----
    for x in range(1, 3):
        scraper.scraping_globenewswire(x)


    # ----- Add to Database -----
    connect.commit()
    print("Process done. Starting to sleep again. Time: " + str(datetime.now()))
    sleep(randint(5, 12))

asp.net 5中的图像需要哪个包？

2 个答案: