package helloworld
import (
"fmt"
"net/http"
"appengine"
"appengine/user"
)
func init() {
fmt.Print("hello")
http.HandleFunc("/", handler)
}
func handler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
u := user.Current(c)
if u == nil {
url, err := user.LoginURL(c, r.URL.String())
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Location", url)
w.WriteHeader(http.StatusFound)
return
}
fmt.Fprintf(w, "Hello, %v!", u)
}
在goapp serve
输出
(saucy)adam@localhost:~/projects/ringed-land-605/default$ goapp serve -host 0.0.0.0 .
INFO 2014-06-08 23:57:47,862 devappserver2.py:716] Skipping SDK update check.
INFO 2014-06-08 23:57:47,877 api_server.py:171] Starting API server at: http://localhost:48026
INFO 2014-06-08 23:57:47,923 dispatcher.py:182] Starting module "default" running at: http://0.0.0.0:8080
INFO 2014-06-08 23:57:47,925 admin_server.py:117] Starting admin server at: http://localhost:8000
ERROR 2014-06-08 23:57:48,759 http_runtime.py:262] bad runtime process port ['hello46591\n']
删除fmt.Print()
可解决问题。我的问题是为什么会发生这种情况?
答案 0 :(得分:4)
启动运行时进程时,Go Development Server(在App Engine Go SDK中)正在读取helloworld的init
中的单行响应。
修改_start_process_flavor
中的http_runtime.py
标记;因此,HTTP运行时尝试读取该行以获取要侦听的端口的方向。
读取启动过程文件中预期的单行响应。 [...] START_PROCESS_FILE flavor使用运行时实例的文件来报告它正在侦听的端口。
在这种情况下,hello
不是一个有效的侦听端口。
请尝试使用Go的log
包:
log.Print("hello")