关于Go语言在服务端做Restful接口和socket通信

转载自：　http://xiaorui.cc/2014/10/25/%e5%85%b3%e4%ba%8ego%e8%af%ad%e8%a8%80%e5%9c%a8%e6%9c%8d%e5%8a%a1%e7%ab%af%e5%81%9arestful%e6%8e%a5%e5%8f%a3%e5%92%8csocket%e9%80%9a%e4%bf%a1/

关于Go语言在服务端做Restful接口和socket通信

2014-10-25Golangrfyiamcool

下图是关于rest的使用介绍,有些老生常谈了。

当REST架构的约束条件作为一个整体应用时，将生成一个可以扩展到大量客户端的应用程序。它还降低了客户端和服务器之间的交互延迟。统一界面简化了整个系统架构，改进了子系统之间交互的可见性。REST简化了客户端和服务器的实现，而且对于使用REST开发的应用程序更加容易扩展。

其实说白了，就是根据不同的方法，来分类不同的任务~

我这边使用golang的drone/routes库实现restful服务。  下面是实现rest的具体事例代码。

packagemainimport (    "fmt"    "github.com/drone/routes"    "net/http")funcgetuser(whttp.ResponseWriter,r *http.Request){    params:=r.URL.Query()    uid:=params.Get(":uid")    fmt.Fprintf(w,"you are get user %s",uid)}func modifyuser(whttp.ResponseWriter,r *http.Request){    params:=r.URL.Query()    uid:=params.Get(":uid")    fmt.Fprintf(w,"you are modify user %s",uid)}funcdeleteuser(whttp.ResponseWriter,r *http.Request){    params:=r.URL.Query()    uid:=params.Get(":uid")    fmt.Fprintf(w,"you are delete user %s",uid)}func adduser(whttp.ResponseWriter,r *http.Request){    params:=r.URL.Query()    uid:=params.Get(":uid")    fmt.Fprint(w,"you are add user %s",uid)    fmt.Printf("you are add user %s",uid)}funcmain(){    mux:=routes.New()    mux.Get("/user/:uid",getuser)    mux.Post("/user/:uid",modifyuser)    mux.Del("/user/:uid",deleteuser)    mux.Put("/user/:uid",adduser)    http.Handle("/",mux)    http.ListenAndServe(":8088",nil)}//xiaorui.cc

下面说下golang socket的实例代码, 这边针对每个请求都使用协程处理请求。 

server.go

packagemainimport (    "fmt"    "net"    "os")funcmain(){    var(        host  = "127.0.0.1"        port  = "8080"        remote= host+ ":"+ port        data  = make([]byte,1024)    )    fmt.Println("Initiating server... (Ctrl-C to stop)")    lis,err :=net.Listen("tcp",remote)    defer lis.Close()    iferr !=nil {        fmt.Println("Error when listen: ",remote)        os.Exit(-1)    }    for{        var resstring        conn,err :=lis.Accept()        iferr !=nil {            fmt.Println("Error accepting client: ",err.Error())            os.Exit(0)        }        go func(connet.Conn){            fmt.Println("New connection: ", con.RemoteAddr())            for{                length,err :=con.Read(data)                iferr !=nil {                    fmt.Printf("Client %v quit.\n", con.RemoteAddr())                    con.Close()                    return                }                res= string(data[0:length])                fmt.Printf("%s said: %s\n",con.RemoteAddr(),res)                res= "You said:"+ res                con.Write([]byte(res))            }        }(conn)    }}

import ( "fmt" "net" "os")func main() { var ( host = "127.0.0.1" port = "8080" remote = host + ":" + port data = make([]byte, 1024) ) fmt.Println("Initiating server... (Ctrl-C to stop)") lis, err := net.Listen("tcp", remote) defer lis.Close() if err != nil { fmt.Println("Error when listen: ", remote) os.Exit(-1) } for { var res string conn, err := lis.Accept() if err != nil { fmt.Println("Error accepting client: ", err.Error()) os.Exit(0) } go func(con net.Conn) { fmt.Println("New connection: ", con.RemoteAddr()) for { length, err := con.Read(data) if err != nil { fmt.Printf("Client %v quit.\n", con.RemoteAddr()) con.Close() return } res = string(data[0:length]) fmt.Printf("%s said: %s\n", con.RemoteAddr(), res) res = "You said:" + res con.Write([]byte(res)) } }(conn) }}

socket client的go实现代码

packagemainimport (    "fmt"    "net"    "os")varstr stringvar msg= make([]byte,1024)funcmain(){    var(        host  = "127.0.0.1"        port  = "8080"        remote= host+ ":"+ port    )    con,err :=net.Dial("tcp",remote)    defer con.Close()    iferr !=nil {        fmt.Println("Server not found.")        os.Exit(-1)    }    fmt.Println("Connection OK.")    for{        fmt.Printf("Enter a sentence:")        fmt.Scanf("%s\n",&str)        ifstr =="quit" {            fmt.Println("Communication terminated.")            os.Exit(1)        }        in,err :=con.Write([]byte(str))        iferr !=nil {            fmt.Printf("Error when send to server: %d\n",in)            os.Exit(0)        }        length,err :=con.Read(msg)        iferr !=nil {            fmt.Printf("Error when read from server.\n")            os.Exit(0)        }        str= string(msg[0:length])        fmt.Println(str)    }}

package mainimport ( "fmt" "net" "os")var str stringvar msg = make([]byte, 1024)func main() { var ( host = "127.0.0.1" port = "8080" remote = host + ":" + port ) con, err := net.Dial("tcp", remote) defer con.Close() if err != nil { fmt.Println("Server not found.") os.Exit(-1) } fmt.Println("Connection OK.") for { fmt.Printf("Enter a sentence:") fmt.Scanf("%s\n", &str) if str == "quit" { fmt.Println("Communication terminated.") os.Exit(1) } in, err := con.Write([]byte(str)) if err != nil { fmt.Printf("Error when send to server: %d\n", in) os.Exit(0) } length, err := con.Read(msg) if err != nil { fmt.Printf("Error when read from server.\n") os.Exit(0) } str = string(msg[0:length]) fmt.Println(str) }}