golang module installation import

As the applications developed in Go language become more and more complex, the management of code modules becomes more and more critical. In the Go language, modules are regarded as first-class citizens, and after the Go1.11 version, official support for module management is provided, which is the so-called go modules. This article will introduce how to use go modules to install and import modules.

What are go modules

go modules is a code dependency management tool provided by the Go language. Through go modules, you can easily manage the third-party libraries and modules that your application depends on. Each Go module has its own version number, and you can lock your dependencies through the version number to ensure that the dependent code version does not change at will.

Different from the old GOPATH method, using go modules no longer requires managing all dependent packages under the global GOPATH. On the contrary, each go module has its own modules file for managing dependent packages and version information. . This means that when you have multiple projects with different version compatibility, you can install and use multiple package versions simultaneously on the same machine without interfering with each other.

How to use go modules

Initialize go modules

Before using go modules to manage dependencies, you need to initialize go modules first. In your project root directory, run the following command:

go mod init [module name]

where [module name] is your module name. The function of the module name is similar to the package name in Java. It corresponds to the address of your code warehouse. If you don't have a repository, you can use your GithHub username as your module name.

For example, the following command will create a module named "hello":

go mod init hello

After running this command, a module named go.mod# will be generated in the project root directory. ## file, which will be used to record the dependencies of the project.

go get [package name]

go get github.com/gin-gonic/gin

go get github.com/gin-gonic/gin@v1.4.0

go.mod file will also be automatically updated to record the newly installed software package information.

import "github.com/gin-gonic/gin"

go get -u [package name]

go get -u github.com/gin-gonic/gin

go mod tidy

The above is the detailed content of golang module installation import. For more information, please follow other related articles on the PHP Chinese website!