Shulou(Shulou.com)06/03 Report--

This article mainly introduces the differences between crawler agents and collectors for data collection. It has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let the editor take you to know about it.

What's the difference between collecting data as a crawler agent or a collector? In today's network era, the amount of data is getting larger and larger, which only depends on manual collection, so there is no efficiency at all, so in the face of massive web data, we all use a variety of tools to collect. The current data acquisition methods are:

Crawler code.

Using Python, JAVA and other programming languages to write a web crawler to achieve data collection, it is necessary to obtain web pages, analyze web pages, extract web page data, and input data for storage.

Collector.

The collector is a software that can be used after download and installation, and can collect a certain amount of web page data in batches. It has the functions of collection, typesetting, storage and so on.

Is it better to use a collector or a crawler code to collect data? What is the difference between the two, their advantages and disadvantages?

1, cost, slightly better collectors are basically charged.

The collection effect is not good without charge, or some functions need to be paid for. The crawler code is written by yourself at no cost.

2. The operation is difficult.

Collector is a software, you need to learn how to operate, very simple. And to use crawlers to collect, there is a certain degree of difficulty, because the premise is that you have to know the programming language before you can code. Do you think this is a software that is easy to learn or a language that is easy to learn?

3. Limit, the collector can collect directly, and the function setting can not be changed.

For IP restrictions, some collectors set IP proxy usage. Crawlers also need to consider the limitations of the site, in addition to IP restrictions, it is recommended to use wizard IP proxy, as well as request headers, cookie, asynchronous loading, etc., these are for different sites to add different anti-crawler methods. It is difficult to use crawler code, and there are more problems to consider.

4. Get the format of the content.

Ordinary collectors can only collect some simple web pages, and the storage format is only html and txt. Slightly complex pages can not be collected smoothly. And according to the need to write crawler code, access to data, and the required format storage, a wider range.

5. The speed of collection.

The collection speed of the collector can be set, but after setting, the time interval for batch data acquisition is the same, and the website is easy to find, so your collection is limited. The acquisition program can set random time interval to collect, which is safe and reliable.

Is it better to use a collector or a crawler code to collect data? From the above analysis, the use of the collector will be relatively simple, although the collection scope and security are not very good, but it can also meet the requirements of the collector.

Thank you for reading this article carefully. I hope the article "what is the difference between data collection and crawler agent and collector" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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