go web的简单服务器
1）简单web服务器：
package main
import (
"fmt"
"net/http"
)
func sayHelloName(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "hello, world")
}
func main() {
http.HandleFunc("/", sayHelloName)
http.ListenAndServe(":9090", nil)
} 首先go run hello.go之后，打开一个浏览器，输入http://127.0.0.1:9090，你就会在网页上看到web的打印了。
2）带有表单处理的web服务器：
package main
import (
"fmt"
"html/template"
"net/http"
)
func sayHelloName(w http.ResponseWriter, r* http.Request) {
fmt.Fprintf(w, "hello, world")
}
func login(w http.ResponseWriter, r* http.Request) {
if r.Method == "GET" {
t, _ := template.ParseFiles("login.html");
t.Execute(w, nil)
} else {
r.ParseForm()
fmt.Println("username:", r.Form["username"])
fmt.Println("password", r.Form["password"])
}
}
func main() {
http.HandleFunc("/", sayHelloName)
http.HandleFunc("/login", login)
http.ListenAndServe(":9090", nil)
} 上面给出的只是代码内容，你还需要一个login.html模板文件，
<html>
<head>
<title> </title>
</head>
<body>
<form action="http://127.0.0.1:9090/login" method="post">
user: <input type="text" name ="username">
pass: <input type="password" name="password">
<input type="submit" value="login">
</form>
</body>
</html> 运行go代码之后，试着在浏览器下输入127.0.0.1:9090和127.0.0.1:9090/login
