哈哈哈，今天才知道谷歌浏览器同时只能对同一个 URL 提出一个请求。

// 我用的测试代码

package main import ( "log" "net/http" "time" ) type Server struct { lock bool } func (s *Server) listen(port string) { mux := http.NewServeMux() mux.HandleFunc("/a", s.testHandler) mux.HandleFunc("/b", s.testHandler) mux.HandleFunc("/c", s.testHandler) mux.HandleFunc("/d", s.testHandler) mux.HandleFunc("/e", s.testHandler) mux.HandleFunc("/f", s.testHandler) mux.HandleFunc("/g", s.testHandler) mux.HandleFunc("/h", s.testHandler) mux.HandleFunc("/i", s.testHandler) mux.HandleFunc("/j", s.testHandler) http.ListenAndServe(":"+port, mux) } func (s *Server) testHandler(w http.ResponseWriter, r *http.Request) { log.Println("here") if s.lock == true { w.Write([]byte("locked")) log.Println("locked") return } s.lock = true time.Sleep(60 * time.Second) s.lock = false log.Println("unlocked") w.Write([]byte("unlocked")) } func main() { server := Server{ lock: false, } server.listen("8888") } 

Console 控制台测试同时打开

// console 控制台同时打开下面这组会阻塞，但是过几秒很奇怪的是后面九条是同时完成 window.open("http://127.0.0.1:8888/a"); window.open("http://127.0.0.1:8888/a"); window.open("http://127.0.0.1:8888/a"); window.open("http://127.0.0.1:8888/a"); window.open("http://127.0.0.1:8888/a"); window.open("http://127.0.0.1:8888/a"); // console 控制台不会阻塞 window.open("http://127.0.0.1:8888/a"); window.open("http://127.0.0.1:8888/b"); window.open("http://127.0.0.1:8888/c"); window.open("http://127.0.0.1:8888/d"); window.open("http://127.0.0.1:8888/e"); window.open("http://127.0.0.1:8888/f");