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
https://gobyexample.com/json
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`
golang JSON webservice - nginx load balance
原文地址：https://www.cnblogs.com/brayden/p/8427372.html