HTTP requests for Java

After running the main method, the above code directly returns to Baidu's HTML interface

This is the following common interface:

For the HTTPS request and the difference between it and HTTP request, please refer to Baidu Encyclopedia: https://baike.baidu.com/item/https/285356?fr=aladdin

As for how to request HTTPS, I won't say more. The secret is all in javax net. SSL this package and its corresponding classes.

Like many high-level languages such as ruby and python, Java basically encapsulates many underlying things. As a developer, I am familiar with the API, import the corresponding package and call the corresponding method to complete the requirements according to the business needs.

Of course, as a junior programmer, you can know which APIs are commonly used to complete work tasks or learning tasks, but as an intermediate programmer, you should not only know the API, but also be familiar with and understand its implementation principle. Of course, you should also know how to use them in those situations, how they operate in the project, and what problems will occur, As an intermediate programmer, you must know. Of course, if you are a junior programmer, you can put aside the principle. Of course, understanding is the best.