How to write the reptile efficiently?

Of course, you don't need to write code. There are ready-made crawler software that can be used directly without line-by-line coding. Here I briefly introduce two crawler softwares-Excel and Octopus, which can quickly capture web data and are very simple to use:

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Most people should have heard of or used Excel to capture web data. For some simple and regular static web page data, such as table data, you can directly use Excel external links to import. Let me briefly introduce this way:

1. Here, take the PM2.5 data captured on rank as an example, which are all conventional tabular data, as follows:

2. Create a new excel file and open it, and then click Data in the menu bar->; "From the website", as follows:

3. Then enter the link address of the above webpage in the pop-up window, and click the "Go" button to automatically open the webpage, as shown below:

4. Finally, we click the "Import" button in the lower right corner to import the table data from the webpage into the Excel file, as follows, which is very convenient and we don't need to rearrange it:

octopus

This is a professional crawler software, which can be used to crawl complex dynamically loaded web pages. Let me briefly introduce this software:

1. Download and install Octopus software first, which can be downloaded directly from official website, as follows:

2. After installation, we can use this software to capture web data. First, open this software and select "Custom Collection" on the home page, as shown below:

3. Then on the task page, go to the webpage we need to crawl. Take the data of Zhaopin recruitment as an example, as follows:

Click the Save button, and you will automatically jump to the corresponding webpage and open it. The effect is as follows. Here we can directly select the webpage data to be crawled, which is very simple. Just follow the instructions and go down step by step:

5. Finally, click Save and start collection and start local collection, so that you can automatically crawl the data you just selected, as shown below:

Here, you can also choose the format of data export according to your own needs, such as Excel, CSV, HTML, database, etc., as follows:

At this point, we have finished using Excel and Octopus to capture web data. Generally speaking, these two crawler softwares are easy to use and easy to learn and master. As long as you are familiar with the operation, you will soon master it. Of course, if you have a certain programming foundation, you can also realize web crawler through programming, such as Java and Python. You can try it yourself if you are interested. There are also a wealth of tutorials and materials on the Internet for reference. I hope the content shared above can also help you.