func main() {
http.HandleFunc("/api", apiHandler)
http.HandleFunc("/query/main", mainHandler)
http.HandleFunc("/query/show", showHandler)
http.HandleFunc("/", mainHandler)
http.ListenAndServe(":8081", nil)
}
API 和网页 按不同的url处理
用go-curl调用底层service
func callCurl(postData string) (result string, err error) { easy := curl.EasyInit() defer easy.Cleanup() easy.Setopt(curl.OPT_URL, "http://localhost:8540") easy.Setopt(curl.OPT_POST, true) easy.Setopt(curl.OPT_VERBOSE, true) easy.Setopt(curl.OPT_HTTPHEADER, []string{"Content-Type: application/json"}) easy.Setopt(curl.OPT_POSTFIELDSIZE, len(postData)) easy.Setopt(curl.OPT_READFUNCTION, func(ptr []byte, _ interface{}) int { return copy(ptr, postData) }) easy.Setopt(curl.OPT_WRITEFUNCTION, func(buf []byte, _ interface{}) bool { result = string(buf) return true }) if err := easy.Perform(); err != nil { return "", err } return result, nil }
json.Marshal/Unmarshal 把json字符串转 go struct
http.Template 来写 web页面
https://golang.google.cn/doc/articles/wiki/
格式化一下 json到网页：
https://github.com/tidwall/pretty
opt := &pretty.Options{Width: 80, Prefix: "<br>", Indent: " ", SortKeys: false}
result = string(pretty.PrettyOptions([]byte(result), opt)
防止 html escape
http://blog.xiayf.cn/2013/11/01/unescape-html-in-golang-html_template/
用 template.HTML类 封装。
用nginx做load balance：
First configure /etc/nginx/nginx.conf:
worker_processes 5; worker_rlimit_nofile 8192; events { worker_connections 4096; } http { upstream myapp1 { server server1:8081; server server2:8081; } server { listen 8080; location / { proxy_pass http://myapp1; } } }
Start nginx via `nginx`
Try it in browser via nginx URL: `http://nginx-server:8080`
