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1 目标网站分析 首先我们打开今日头条网站，搜索 街拍，点击图集，这里每就是我们要爬取的目录，我们称为索引页。1 点开一个标题，进去，称为详情页。2这里面的图是我们所要爬取的。比如这里可以点击图片，共7张图。2 这里我们可以想到，可以先把详情页的每个标题URL爬取下来，再请求详情页得到每个图集。 分析详情页代码，打开谷歌浏览器开发工具，选择Network，刷新网页。发现第一个请求中返回的不含图片的任何信息。 想到头条应该是Ajax请求，选择XHR，继续刷新，点击图集。发现我们点击图集发出的请求返回的代码中 data 中含有我们想要的图片信息，是Json格式。可以看到title信息，刚好符合。 3 Headers，属于get请求，可以看到请求参数。 4 也可以看到我们请求索引页的网址。 然后滑动网页，发现左边又多了个请求，offset=20，由此得知索引页可通过改变offset来换页。6 继续看详情页，我们想找到每个图集的内容。同样打开network工具，刷新网页。选择XHR，发现每个请求中都不包含图集信息。选择ALL查看，我们可以看到对应网址的请求返回了一段代码。我们右击图片，新窗口查看，得到图片的地址后面的数字。到前面的代码中搜索，发现图片信息恰好在gallery: JSON.parse(” “)中，是Json格式。其中’sub_image’的值包含的就是我们想要获取的图集的信息

Like the titles said, is there anyway to customize the size/height/offset of the official bottomSheet (Support library 23.x.x) when it is in STATE_EXPANDED state? There is a class BottomSheetBehavior but I can't find anything about height or offset. What I want is get a similar behavior like Google Maps: MiguelHincapieC After digging on Android code and searching I got it: You can do it modifying default BottomSheetBehavior adding one more stat with following steps: Create a Java class and extend it from CoordinatorLayout.Behavior<V> Copy paste code from default BottomSheetBehavior file to

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: i want to store timezone of client (visitor) which going to use my web portal. would you please show me way to find out timezone for client machine using JAVAScript code... I need the GMT offset hours like `(GMT +5:30)` . 回答1: This could be a better approach to find client local time/offset function pad ( number , length ){ var str = "" + number ; while ( str . length < length ) { str = '0' + str ; } return str ; } var offset = new Date (). getTimezoneOffset (); offset = (( offset < 0 ? '+' : '-' )+ pad ( parseInt ( Math . abs (

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How do I get the current UTC offset (as in time zone, but just the UTC offset of the current moment)? I need an answer like "+02:00". 回答1: There are two parts to this question: Get the UTC offset as a boost::posix_time::time_duration Format the time_duration as specified Apparently, getting the local time zone is not exposed very well in a widely implemented API. We can, however, get it by taking the difference of a moment relative to UTC and the same moment relative to the current time zone, like this: boost::posix_time::time_duration get

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is there a way in Linux to ask for the Head or Tail but with an additional offset of records to ignore. For example if the file example.lst contains the following: row01 row02 row03 row04 row05 And I use head -n3 example.lst I can get rows 1 - 3 but what if I want it to skip the first row and get rows 2 - 4? I ask because some commands have a header which may not be desirable within the search results. For example du -h ~ --max-depth 1 | sort -rh will return the directory size of all folders within the home directory sorted in descending

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: It's easy. Please see code in response. 回答1: The example code connect to public echo web socket server, send message, receive response, and disconnect. JavaScript code provide functions for web socket and logging to webassembly code. Main program logic wrote in C, that then compile to wasm file. Results can be seen in js console. Compilation: emcc ws_test.c -o ws_test.html -O1 -s WASM=1 -s ONLY_MY_CODE=1 -s EXPORTED_FUNCTIONS="['_getBuffer','_wsOnMessage', '_wsOnOpen', '_test']" Result file ws_test.wasm is tiny. (431 bytes) To check the wasm

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to get the peer list from the trackers using https://wiki.theory.org/BitTorrent_Tracker_Protocol But most of the torrent files available on the net use a udp tracker. The above website is for HTTP trackers. The torrent files with HTTP based trackers give an error.( Passkey error , or hash error or user error or 404 not found response ) Right now my request code for all HTTP trackers look like : payload = urllib.urlencode(payload) for ann in self.torrent.announce_list: if("udp" not in ann[0]): url = ann[0] print "Encoded Request

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to decode a websocket frame, but I'm not successful when it comes to decoding the extended payload. Here what I did achieve so far: char *in = data; char *buffer; unsigned int i; unsigned char mask[4]; unsigned int packet_length = 0; int rc; /* Expect a finished text frame. */ assert(in[0] == '\x81'); packet_length = ((unsigned char) in[1]) & 0x7f; mask[0] = in[2]; mask[1] = in[3]; mask[2] = in[4]; mask[3] = in[5]; if (packet_length <= 125) { **// This decoding works** /* Unmask the payload. */ for (i = 0; i < packet_length; i++)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am looking for a small and free TGA image loading class or library for java. Ideally the result is a BufferedImage. Yes, I have already googled, but most results are outdated, or are quite big libraries that contain a lot of other stuff i dont need. I am looking for something small and simple that reads just TGA images. Thanks! 回答1: We use this class copied from some open source project to read TGA files. It's really old. It can only handle Targa files with most basic encoding. Give it a try. public class TargaReader { public static Image

offsetWidth、offsetHeight （width + padding + border + 滚动条） offsetTop、offsetLeft (距离父元素的距离，从父元素的padding算起，本元素的border) 即left+marginLeft clientWidth、clientHeight (width + padding, 不包含滚动条) clientTop、clientLeft(通常这些值就等于左边和上边的边框宽度, 即border-left-widht、border-top-width) scrollWidth、scrollHeight （如果没有滚动条和clientWidth的一致） scrollTop、scrollLeft 用于设置滚动条的位置 offsetParent属性指定这些属性所相对的父元素，如果offsetParent为null，则这些属性都是文档坐标 //用offsetLeft和offsetTop来计算e的位置 function getElementPosition(e){ var x = 0,y = 0; while(e != null) { x += e.offsetLeft; y += e.offsetTop; e = e.offsetParent; } return { x : x, y : y }; } 来源： https:/