Go Web程序
package main
import (
"fmt"
"log"
"net/http"
"strings"
)
func http_server_say_hello(w http.ResponseWriter, r *http.Request) {
_ = r.ParseForm() //解析参数
fmt.Println(r.Form)
fmt.Println("Path: ", r.URL.Path)
fmt.Println("Host: ", r.Host)
for k,v:=range r.Form{
fmt.Println("key:",k)
fmt.Println("val:", strings.Join(v,""))
}
//写入到w的是输出到客户端的内容
_,_ = fmt.Fprintf(w,"Hello Web, %s!", r.Form.Get("name"))
}
func main(){
fmt.Printf("Running in main ...")
http.HandleFunc("/",http_server_say_hello) //设置访问的路由
err := http.ListenAndServe(":8080",nil) //设置监听的端口
if err != nil{
log.Fatal("ListenAndServe:",err)
}
//在浏览器中打开：http://localhost:8080/hello?name=lyk
}
登录功能
//login.tpl文件
<html>
<head>
<title>控制台登录</title>
</head>
<body>
<form action="/login" method="post">
用户名:<input type="text" name="username"/>
密码：<input type="text" name="password"/>
<input type="submit" value="登录"/>
</form>
</body>
</html>
package main
import (
"fmt"
"html/template"
"log"
"net/http"
"strings"
)
func login(w http.ResponseWriter, r *http.Request){
fmt.Println("method:", r.Method)
if r.Method == "GET"{
t,_ := template.ParseFiles("login.tpl")
log.Println(t.Execute(w, nil))
}else {
_ = r.ParseForm()
fmt.Println("username:",r.Form["username"])
fmt.Println("password:",r.Form["password"])
if pwd := r.Form.Get("password");pwd == "123456"{
fmt.Fprintf(w,"欢迎登录， Hello %s!",r.Form.Get("username"))
}else {
fmt.Fprintf(w, "密码错误，请重新输入！")
}
}
}
func login_function_caller() {
http.HandleFunc("/login", login)
err := http.ListenAndServe(":8080", nil)
if err != nil {
log.Fatal("ListenAndServe:",err)
}
}
func main(){
fmt.Printf("Running in main ...")
login_function_caller()
}
结果
