测试用例1：模拟一下，重定向到某个url地址，如百度


package header

import (
	"fmt"
	"log"
	"net/http"
	"testing"
)

func login(w http.ResponseWriter, r *http.Request) {
	fmt.Print(fmt.Sprintf("%v+", r))
	w.Header().Set("Cache-Control", "must-revalidate, no-store")
	w.Header().Set("Content-Type", " text/html;charset=UTF-8")
	w.Header().Set("Location", "http://www.baidu.com/") //跳转地址设置
	w.WriteHeader(http.StatusFound)                                  //关键在这里！
}

func TestResponseHeader(t *testing.T) {
	http.HandleFunc("/", login)              //设置访问的路由
	err := http.ListenAndServe(":9090", nil) //设置监听的端口
	if err != nil {
		log.Fatal("ListenAndServe: ", err)
	}
}

在这里插入图片描述

测试用例2：模拟一下，重定向到本地的某个接口下

test.go


import (
	"fmt"
	"log"
	"net/http"
	"os"
	"testing"
)

func authorizeHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Print(fmt.Sprintf("%v+", r))
	w.Header().Set("Cache-Control", "must-revalidate, no-store")
	w.Header().Set("Content-Type", " text/html;charset=UTF-8")
	// 模拟重定向到login接口下
	w.Header().Set("Location", "/login") //跳转地址设置
	w.WriteHeader(http.StatusFound)      //关键在这里！
}

func loginHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Println("\n-----打开---Login.html---")
	outputHTML(w, r, "static/login.html")
}

// 测试用例2：模拟一下，重定向到本服务的某个API接口下
func TestResponseHeader2(t *testing.T) {
	http.HandleFunc("/", authorizeHandler)   //设置访问的路由
	http.HandleFunc("/login", loginHandler)  //设置访问的路由
	err := http.ListenAndServe(":9090", nil) //设置监听的端口
	if err != nil {
		log.Fatal("ListenAndServe: ", err)
	}
}

func outputHTML(w http.ResponseWriter, req *http.Request, filename string) {
	file, err := os.Open(filename)
	if err != nil {
		http.Error(w, err.Error(), 500)
		return
	}
	defer file.Close()
	fi, _ := file.Stat()
	http.ServeContent(w, req, file.Name(), fi.ModTime(), file)
}

在test.go的同级目录下，
创建一个static目录
在static目录下创建静态文件，如
login.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Login</title>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
    <script src="//code.jquery.com/jquery-2.2.4.min.js"></script>
    <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>

<body>
    <div class="container">
        <h1>Login In</h1>
        <form action="/login" method="POST">
            <div class="form-group">
                <label for="username">User Name</label>
                <input type="text" class="form-control" name="username" required placeholder="Please enter your user name">
            </div>
            <div class="form-group">
                <label for="password">Password</label>
                <input type="password" class="form-control" name="password" placeholder="Please enter your password">
            </div>
            <button type="submit" class="btn btn-success">Login</button>
        </form>
    </div>
</body>

</html>