go语言的net/http包的使用非常的简单优雅

（1）服务端

package mainimport ("flag""fmt""net/http"
)func main() {host := flag.String("host", "127.0.0.1", "listen host")port := flag.String("port", "80", "listen port")http.HandleFunc("/hello", Hello)err := http.ListenAndServe(*host+":"+*port, nil)if err != nil {panic(err)}
}func Hello(w http.ResponseWriter, req *http.Request) {
<p>	w.Write([]byte("Hello World"))</p>}

http.HandleFunc用来注册路径处理函数，会根据给定路径的不同，调用不同的函数

http.ListenAndSercer监听iP与端口，本机IP可以省略不写，仅书写冒号加端口，如http.ListenAndSercer(“:8080”, nil)

路径处理函数，参数必须为w http.ResponseWriter和 req *http.Request且不能有返回值

测试结果：成功

（2）客户端

package mainimport ("fmt""io/ioutil""net/http"
)func main() {response, _ := http.Get("http://localhost:80/hello")defer response.Body.Close()body, _ := ioutil.ReadAll(response.Body)fmt.Println(string(body))
}

测试结果：成功