http://www.cnblogs.com/wangrudong003/p/5535689.html
go代碼部分：
// WebChat project main.gopackage mainimport ("fmt""net/http""time""encoding/json""strings""golang.org/x/net/websocket")//全域資訊var datas Datasvar users map[*websocket.Conn]stringfunc main() {fmt.Println("啟動時間")fmt.Println(time.Now())//初始化datas = Datas{}users = make(map[*websocket.Conn]string)//綁定效果頁面http.HandleFunc("/", h_index)//綁定socket方法http.Handle("/webSocket", websocket.Handler(h_webSocket))//開始監聽http.ListenAndServe(":8080", nil)}func h_index(w http.ResponseWriter, r *http.Request) {http.ServeFile(w, r, "index.html")}func h_webSocket(ws *websocket.Conn) {var userMsg UserMsgvar data stringfor {//判斷是否重複串連if _, ok := users[ws]; !ok {users[ws] = "匿名"}userMsgsLen := len(datas.UserMsgs)fmt.Println("UserMsgs", userMsgsLen, "users長度：", len(users))//有訊息時，全部分發送資料if userMsgsLen > 0 {b, errMarshl := json.Marshal(datas)if errMarshl != nil {fmt.Println("全域訊息內容異常...")break}for key, _ := range users {errMarshl = websocket.Message.Send(key, string(b))if errMarshl != nil {//移除出錯的連結delete(users, key)fmt.Println("發送出錯...")break}}datas.UserMsgs = make([]UserMsg, 0)}fmt.Println("開始解析資料...")err := websocket.Message.Receive(ws, &data)fmt.Println("data：", data)if err != nil {//移除出錯的連結delete(users, ws)fmt.Println("接收出錯...")break}data = strings.Replace(data, "\n", "", 0)err = json.Unmarshal([]byte(data), &userMsg)if err != nil {fmt.Println("解析資料異常...")break}fmt.Println("請求資料類型：", userMsg.DataType)switch userMsg.DataType {case "send"://賦值對應的暱稱到wsif _, ok := users[ws]; ok {users[ws] = userMsg.UserName//清除串連人暱稱資訊datas.UserDatas = make([]UserData, 0)//重新載入當前線上串連人for _, item := range users {userData := UserData{UserName: item}datas.UserDatas = append(datas.UserDatas, userData)}}datas.UserMsgs = append(datas.UserMsgs, userMsg)}}}type UserMsg struct {UserName stringMsg stringDataType string}type UserData struct {UserName string}type Datas struct {UserMsgs []UserMsgUserDatas []UserData}
<!DOCTYPE html><html lang="zh-CN"><head> <title></title> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> <!-- 新 Bootstrap 核心 CSS 檔案 --> <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css"> <script src="//cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script> <!-- <script src="//cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>--></head><body> <div class="container"> <div>內容：</div> <div class="list-group" id="divShow"> <!--<div class="list-group-item list-group-item-success">1111</div> <div class="list-group-item list-group-item-info">1111</div> <div class="list-group-item list-group-item-warning">1111</div> <div class="list-group-item list-group-item-danger">1111</div>--> </div> <div class="list-group" id="divUsers"> 線上：<br /> <!--<div class="btn btn-default">111</div>--> </div> <div> 暱稱：<input class="form-control" id="txtUserName" value="紅領巾" type="text" maxlength="20" style="width: 30%; margin-bottom: 15px" /> 聊聊：<textarea class="form-control" id="txtContent" autofocus rows="6" placeholder="想聊的內容" maxlength="200" required style="width: 60%; "></textarea> <button class="btn btn-default" id="btnSend" style="margin-top:15px">發 送</button> </div> </div></body></html><script> var tool = function () { var paperLoopNum = 0; var paperTempleArr = [ '<div class="list-group-item list-group-item-success">{0}</div>', '<div class="list-group-item list-group-item-info">{0}</div>', '<div class="list-group-item list-group-item-warning">{0}</div>', '<div class="list-group-item list-group-item-danger">{0}</div>' ]; return { paperDiv: function (val) { var hl = paperTempleArr[paperLoopNum]; paperLoopNum++; if (paperLoopNum >= paperTempleArr.length) { paperLoopNum = 0; } return this.formart(hl, [val]) }, formart: function (str, arrVal) { for (var i = 0; i < arrVal.length; i++) { str = str.replace("{" + i + "}", arrVal[i]); } return str; } } } function showMsg(id, hl, isAppend) { if (!isAppend) { $("#" + id).html(hl); } else { $("#" + id).append(hl); } } $(function () { //初始化工具方法 var tl = new tool(); var wsUrl = "ws://127.0.0.1:8080/webSocket"; ws = new WebSocket(wsUrl); try { ws.onopen = function () { //showMsg("divShow", tl.paperDiv("串連伺服器-成功")); } ws.onclose = function () { if (ws) { ws.close(); ws = null; } showMsg("divShow", tl.paperDiv("串連伺服器-關閉"), true); } ws.onmessage = function (result) { //console.log(result.data); var data = JSON.parse(result.data); $(data.UserMsgs).each(function (i, item) { showMsg("divShow", tl.paperDiv("【" + item.UserName + "】：" + item.Msg), true); }); var userDataShow = []; $(data.UserDatas).each(function (i, item) { userDataShow.push('<div class="btn btn-default">' + item.UserName + '</div>'); }); showMsg("divUsers", userDataShow.join(''), false); } ws.onerror = function () { if (ws) { ws.close(); ws = null; } showMsg("divShow", tl.paperDiv("串連伺服器-關閉"), true); } } catch (e) { alert(e.message); } $("#btnSend").on("click", function () { var tContentObj = $("#txtContent"); var tContent = $.trim( tContentObj.val()).replace("/[\n]/g", ""); var tUserName = $.trim( $("#txtUserName").val()); tUserName = tUserName.length <= 0 ? "匿名" : tUserName; if (tContent.length <= 0 || $.trim(tContent).length <= 0) { alert("請輸入發送內容!"); return; } if (ws == null) { alert("串連失敗，請F5重新整理頁面!"); return; } var request = tl.formart('{"UserName": "{0}", "DataType": "{1}", "Msg": "{2}" }', [tUserName, "send", tContent]); ws.send(request); tContentObj.val(""); tContentObj.val($.trim(tContentObj.val()).replace("/[\n]/g", "")); }); $("#txtContent").on("keydown", function (event) { if (event.keyCode == 13) { $("#btnSend").trigger("click"); } }); })</script>
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