Golang Web Development Research

The go language is now relatively ripe for development. There is a lot of information on the Internet, this article does not repeat the installation, configuration, operation, grammar-related knowledge, because these are not more clear and convenient than the official website.

It's just a little bit of the go language and other languages are not the same place, to help you quickly avoid the pit and change thinking.

• Getting Started reference documentation:
  • https://github.com/unknwon/go-web-foundation
  • https://github.com/astaxie/build-web-application-with-golang/blob/master/zh/preface.md
  • https://github.com/unknwon/the-way-to-go_zh_cn/blob/master/ebook/ Directory.md
• basic configuration
  • environment variables
    • source ~/.bash.profile config environment variable
    • go env View environment variables

• Installation configuration
  • Goroot
  • Gopath
• Package
  • Functions in the same package are not duplicate
  • Package name can be different from folder name, import with folder name, reference with package name
• Go get-u github.com/xxx/xxx Get External references
• dependency management
  • GODEP oldest
  • DEP official project, just starting
  • glide  new, full-featured  https:// segmentfault.com/a/1190000013016957
    • garbled: First execute chcp 65001
    • glide permissions on Windows bug: https:// studygolang.com/topics/4905
  • govendor new, full function
    • govendor init
    • govendor fetch github.com/xxx
    • sync
• web development
  • web frame:
    • gin high efficiency;
    • beego domestic projects, star many, too large
  • ORM Framework:
    • xorm domestic projects, documents all, response fast;
    Li> gorm fewer documents, more star;
• Syntax conventions to understand
  • Initial case-sensitive visibility: functions, variables, etc. that begin with capital letters are public by default, otherwise private
  • Iota enumeration types
  • Defer to release resources and improve code readability
  • Goroutine Natural support concurrent programming

• Database development Examples

Package Daoimport ("Github.com/go-xorm/xorm"    "FMT") Type UserInfostruct{UserIdstring' Xorm:"userId varchar"' Usernamestring' Xorm:"username varchar"'}func getweixinconfig () {varEngine *Xorm. Enginevarerr error engine, err= Xorm. Newengine ("MySQL","username:password@tcp (host:port)/user_db")    ifErr! =Nil {fmt. PRINTLN (Err)} ERR1:=engine. Ping ()ifErr1! =Nil {fmt. Println (ERR1)} engine. Showsql (true)    varusers []userinfo err2:= engine. Table ("user_db"). Select (the UserId, username"). Find (&users)ifErr2! =Nil {fmt. PRINTLN (Err)} FMT. Println (len (Users))}

• Gin Web Development Sample

Package Mainimport ("Github.com/gin-gonic/gin"    "Awesome-go/src/dao"    "OS"    "io") Func main () {//output log to fileGin. Disableconsolecolor () LogFile, _:= OS. Create ("Log") gin. Defaultwriter=io. Multiwriter (logFile) Router:=Gin. Default () router. GET ("/get", Func (c *Gin. Context) {C.json ( $, Gin. h{"message":"OK",        }) }) router. Run ()//listen and serve on 0.0.0.0:8080}