Using java to generate two-dimensional code tool class example code

Introduction to QR code

Two dimensional bar code was first invented in Japan, It records data symbol information with black-and-white graphics distributed in the plane (two-dimensional direction) according to a certain law. In coding, it skillfully uses "0" and "1" which constitute the internal logic basis of the computer The concept of bit stream uses several geometric shapes corresponding to binary to represent text numerical information, which is automatically read by image input equipment or photoelectric scanning equipment to realize automatic information processing.

The following is a two-dimensional code generation tool class for Java. You can choose to generate files or directly generate them on the page. Let's take a look at the detailed example code.

Sample code

summary

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