The easiest way to download all images on a webpage
Author: chszs, reprinted with note. Blog homepage: http://blog.csdn.net/chszs
The Firefox browser provides a method for downloading all images on a web page. Just a few steps:
Step 1: use Firefox to access any website.For example, accessing http://www.qq.com/Step 2: Right-click the page and select "view page
Now we want to copy the content with images from other websites to our website. in this way, I have to download images from other websites and save them to my local computer, replace the image address in the content with our local address. here we need to use the three functions preg_match_all, file_get_contents, and str_replace in php. Now we want to copy the co
(C #) Use ScrapySharp to concurrently download Tianya images,
Recently, because a job needs to complete the CNKI crawler, when studying the crawler architecture, we found the ScrapySharp, which is suspected to have been transplanted to the famous Python open-source crawler framework Scrapy, however, only the Demo of F # was found on the Internet, and the sample website in the original article was used to
Using Python to download images in batches,
This example describes how to download images in batches using Python. Share it with you for your reference. The specific implementation method is as follows:
#! /Usr/bin/env python #-*-coding: UTF-8-*-'# Filename: download_file.pyimport OS, sysimport reimport urllibimport ur
(length! =-1) {imgdata = new byte [length]; byte [] temp = new byte [500*1024]; int readlen = 0; int destpos = 0; while (readlen = is. read (temp)> 0) {system. arraycopy (temp, 0, imgdata, destpos, readlen); // arraycopy (Object SRC, int srcpos, object DEST, int destpos, int length) // copy an array from the specified source array, and copy from the specified position to the specified position of the target array to the end of destpos + = readlen ;}} return imgdata ;} catch (exception e) {// to
In the past two days, I wrote a smallProgramYou can regularly download images from the Internet to set them to the desktop of your computer. The program is mainly implemented in Java and uses regular expressions to analyze the webpage file to obtain the image address. You must use Windows API to set images to desktops.CodeThe C code is used, and JNI (javaa Local
Php uses the gd library to download all images on the webpage,
In the previous php tutorial, the php gd library can be used to download remote images. However, it only downloads an image in the same principle, to download all images
This article mainly introduces how to use the gd Library in php to download all images on the webpage. This article provides the implementation code directly, you can refer to the php Tutorial in the early stage to talk about how the php gd library can be used to download remote images. However, it just downloads an im
Image sites are often numerous ads, using node. js to write a crawler download pictures, code is not long, save a lot more, than a manual a sheet of storage is the difference between heaven and land.The following code is a download from the mtl.ttsqgs.com image of the program, the image address is to see the source of the Web site, a total of how many can be found in the source code, and then retrace.//buil
This article mainly introduces Python's method of downloading watercress images, and involves Python's skills related to webpage operations. If you need it, refer to the following example to describe how to download watercress Images Using Python. Share it with you for your reference. The specific analysis is as follows:
1. encapsulate it with tk
2. You can ente
ImportUrllib#calling the Urllib moduleImportRe#calling the regular moduledefgethtml (URL):ifUrl isNone:#if the URL is empty, return directly returnHTML=urllib.urlopen (URL)#open a Web page using Urllib.urlopen ifHtml.getcode ()!=200: returnpage=html.read ()#return Web page information returnpagedefgetimg (page):ifPage isNone:returnReg=r'src= "(. +?\.jpg)" Pic_ext'#Matching RulesImgre=re.compile (REG)#generate a regular object (a regular factory method)Imgres=re.findall (Imgre
"];/* Write picture */Get a name for the file.NSString *uniquepath=[[paths stringbyappendingpathcomponent:@ "image"] stringbyappendingpathcomponent:@ " Image.png "];Write the picture to the documents fileGet the Image object in PNG format[Uiimagepngrepresentation (Bear) Writetofile:uniquepath Atomically:yes];/* Read in Picture */Because it's a path, it's loaded into a data object.NSData *data=[nsdata Datawithcontentsoffile:uniquepath];Just read the picture.Img3.image=[uiimage Imagewithdata:data]
Downloading images from the Internet is a frequently used feature in project development. Let's summarize it again.
1. Normal Download Method
Layout file:
Java files
Public class downloadimage extends activity {private imageview imgpic; @ overrideprotected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. download_image); imgpic = (imageview) findvi
In this article, we will share with you the function of downloading images in CSS files through regular expression matching in PHP. The code is very simple to use, especially for children who frequently seek help from other websites.
In this article, we will share with you the function of downloading images in CSS files through regular expression matching in PHP. The code is very simple to use, especially f
Batch download of ordered Images
Bulk download instead of mini thunder (it would be too slow for thunder to download images in batches, so I am too lazy to spend time doing this)
Usage:
1. Open the HTML-written download page, ent
Just download the picture from the Python3 statement Python2 not quite the same, the specific PYTHON3 statement is as follows:Form Urllib Import RequestJpg_link = ' ... ' #图片链接Request.urlretrieve (Jpg_link, path) # path for path plus name Oh (like ~/workjpg/111.jpg)!!! If you do not need a path, you must also have a name, such as 111.jpg is stored directly in the current directoryYou can also write thisImport Urllib.requestJpg_link = ' ... ' #图片链接Requ
to refresh (loading more) in Uicollectionview-Set the location of the refresh view in Viewdidlayoutsubviews to the bottom of the Uicollectionview content, not within the Contentsize range-In Scrollviewdidenddragging: (Uiscrollview *) ScrollView willdecelerate: (BOOL) decelerateA. Determine if you need to load more according to Contentoffset (in this process you can animate the Refresh view)B. If you need to load more, set Contentinset to Uiedgeinsetsmake (0, 0, buttom, 0), the value of buttom s
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