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IM即时通讯 > SDK开发集成 > Web开发集成 > 初始化

初始化JS代码

请查阅集成方式>引入SDK来下载并引入SDK文件，完整的初始化配置文档请查阅API文档

示例代码

var data = {};
// 注意这里, 当引入的SDK文件是NIM_Web_NIM_v.js时，请通过 NIM.getInstance 来初始化；当引入的SDK文件为NIM_Web_SDK_v时，请使用 SDK.NIM.getInstance 来初始化。SDK文件的选择请参见集成方式。
var nim = NIM.getInstance({
  debug: true,   // 是否开启日志，将其打印到console。集成开发阶段建议打开。
  appKey: 'appKey',
  account: 'account',
  token: 'token',
  db:true, //若不要开启数据库请设置false。SDK默认为true。
  // privateConf: {}, // 私有化部署方案所需的配置
  onconnect: onConnect,
  onwillreconnect: onWillReconnect,
  ondisconnect: onDisconnect,
  onerror: onError
});
function onConnect() {
  console.log('连接成功');
}
function onWillReconnect(obj) {
  // 此时说明 SDK 已经断开连接, 请开发者在界面上提示用户连接已断开, 而且正在重新建立连接
  console.log('即将重连');
  console.log(obj.retryCount);
  console.log(obj.duration);
}
function onDisconnect(error) {
  // 此时说明 SDK 处于断开状态, 开发者此时应该根据错误码提示相应的错误信息, 并且跳转到登录页面
  console.log('丢失连接');
  console.log(error);
  if (error) {
    switch (error.code) {
      // 账号或者密码错误, 请跳转到登录页面并提示错误
      case 302:
        break;
      // 重复登录, 已经在其它端登录了, 请跳转到登录页面并提示错误
      case 417:
        break;
      // 被踢, 请提示错误后跳转到登录页面
      case 'kicked':
        break;
      default:
        break;
    }
  }
}
function onError(error) {
  console.log(error);
}

参数解释

同步完成

SDK 在同步完成之后会通知开发者, 开发者可以在此回调之后再初始化自己的界面, 以及进行其他操作, 同步的数据包括下面章节中的

示例代码

var nim = NIM.getInstance({
  onsyncdone: onSyncDone
});
function onSyncDone() {
  console.log('同步完成');
}

初始化配置(同步协议)

开发者可以通过开关来选择同步或不同步可配置参数的同步数据, 这些开关都是初始化参数

所有可配置同步参数如下：

示例代码

var nim = NIM.getInstance({
  syncRelations: false,
  syncBroadcastMsgs: true,
  onsyncRelationsdone: function(err, obj) {
    // ....
  }
});

初始化配置(其它协议)

日志分析

// 客户端代码
// 日志统计插件
function LoggerPlugin(options) {
  var logLevelMap = {
    debug: 0,
    log: 1,
    info: 2,
    warn: 3,
    error: 4
  };
  var self = this;
  var postUrl = options.url || null;
  self.level = logLevelMap[options.level] || 0;
  self.logCache = [];
  self.logNum = 1;
  self.timeInterval = 5000;
  window.onerror = function(
    errorMessage,
    scriptURI,
    lineNumber,
    columnNumber,
    errorObj
  ) {
    self.error.call(self, errorObj);
  };
  setInterval(function() {
    if (self.logCache.length > 0 && postUrl) {
      self.postLogs(postUrl, self.logCache);
    }
  }, self.timeInterval);
}

LoggerPlugin.prototype.debug = function() {
  if (this.level > 0) {
    return;
  }
  console.debug.apply(this, arguments);
  this.cacheLogs.apply(this, ['[degbug]'].concat(arguments));
};

LoggerPlugin.prototype.log = function() {
  if (this.level > 1) {
    return;
  }
  console.log.apply(this, arguments);
  this.cacheLogs.apply(this, ['[log]'].concat(arguments));
};

LoggerPlugin.prototype.info = function() {
  if (this.level > 2) {
    return;
  }
  console.info.apply(this, arguments);
  this.cacheLogs.apply(this, ['[info]'].concat(arguments));
};

LoggerPlugin.prototype.warn = function() {
  if (this.level > 3) {
    return;
  }
  console.warn.apply(this, arguments);
  this.cacheLogs.apply(this, ['[warn]'].concat(arguments));
};

LoggerPlugin.prototype.error = function() {
  if (this.level > 4) {
    return;
  }
  console.error.apply(this, arguments);
  this.cacheLogs.apply(this, ['[error]'].concat(arguments));
};

LoggerPlugin.prototype.cacheLogs = function(logLevel, args) {
  var currentCache = [];
  for (var i = 0; i < args.length; i++) {
    var arg = args[i];
    if (typeof arg === 'object') {
      currentCache.push(JSON.stringify(arg));
    } else {
      currentCache.push(arg);
    }
  }
  var logStr = this.logNum++ + ' ' + logLevel + ' ' + currentCache.join('; ');
  this.logCache.push(logStr.replace('%c', ''));
};

LoggerPlugin.prototype.postLogs = function(url, data) {
  var self = this;
  var xhr = new XMLHttpRequest();
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4) {
      if (xhr.status === 200) {
        console.info('LoggerPlugin::日志上报完成');
        self.logCache = [];
        self.timeInterval = 5000;
      } else {
        self.timeInterval += 5000;
      }
    }
  };
  xhr.open('POST', url);
  xhr.setRequestHeader('Content-Type', 'plain/text;charset=utf-8');
  xhr.timeout = 360;
  xhr.send(data.join('\n'));
};
// 客户端代码
var nim = NIM.getInstance({
  debug: true,
  logFunc: new LoggerPlugin({
    url: '/getlogger',
    level: 'info'
  })
});
// 服务端代码
const express = require('express');
const fs = require('fs');
const app = express();

app.post('/getlogger', (req, res) => {
  req.setEncoding('utf8');
  req.rawBody = '';
  req.on('data', chunk => {
    req.rawBody += chunk;
  });
  req.on('end', () => {
    let body = req.rawBody;
    fs.appendFile('sdklog.log', body, () => {
      res.end();
    });
  });
});

完整的初始化代码

    var data = {};
    var nim = NIM.getInstance({
        // 初始化SDK
        // debug: true
        appKey: 'appKey',
        account: 'account',
        token: 'token',
        customTag: 'TV',
        onconnect: onConnect,
        onerror: onError,
        onwillreconnect: onWillReconnect,
        ondisconnect: onDisconnect,
        // 多端登录
        onloginportschange: onLoginPortsChange,
        // 用户关系
        onblacklist: onBlacklist,
        onsyncmarkinblacklist: onMarkInBlacklist,
        onmutelist: onMutelist,
        onsyncmarkinmutelist: onMarkInMutelist,
        // 好友关系
        onfriends: onFriends,
        onsyncfriendaction: onSyncFriendAction,
        // 用户名片
        onmyinfo: onMyInfo,
        onupdatemyinfo: onUpdateMyInfo,
        onusers: onUsers,
        onupdateuser: onUpdateUser,
        // 群组
        onteams: onTeams,
        onsynccreateteam: onCreateTeam,
        onUpdateTeam: onUpdateTeam,
        onteammembers: onTeamMembers,
        // onsyncteammembersdone: onSyncTeamMembersDone,
        onupdateteammember: onUpdateTeamMember,
        // 群消息业务已读通知
        onTeamMsgReceipt： onTeamMsgReceipt,
        // 会话
        onsessions: onSessions,
        onupdatesession: onUpdateSession,
        // 消息
        onroamingmsgs: onRoamingMsgs,
        onofflinemsgs: onOfflineMsgs,
        onmsg: onMsg,
        // 系统通知
        onofflinesysmsgs: onOfflineSysMsgs,
        onsysmsg: onSysMsg,
        onupdatesysmsg: onUpdateSysMsg,
        onsysmsgunread: onSysMsgUnread,
        onupdatesysmsgunread: onUpdateSysMsgUnread,
        onofflinecustomsysmsgs: onOfflineCustomSysMsgs,
        oncustomsysmsg: onCustomSysMsg,
        // 收到广播消息
        onbroadcastmsg: onBroadcastMsg,
        onbroadcastmsgs: onBroadcastMsgs,
        // 同步完成
        onsyncdone: onSyncDone
    });

    function onConnect() {
        console.log('连接成功');
    }
    function onWillReconnect(obj) {
        // 此时说明 `SDK` 已经断开连接, 请开发者在界面上提示用户连接已断开, 而且正在重新建立连接
        console.log('即将重连');
        console.log(obj.retryCount);
        console.log(obj.duration);
    }
    function onDisconnect(error) {
        // 此时说明 `SDK` 处于断开状态, 开发者此时应该根据错误码提示相应的错误信息, 并且跳转到登录页面
        console.log('丢失连接');
        console.log(error);
        if (error) {
            switch (error.code) {
            // 账号或者密码错误, 请跳转到登录页面并提示错误
            case 302:
                break;
            // 被踢, 请提示错误后跳转到登录页面
            case 'kicked':
                break;
            default:
                break;
            }
        }
    }
    function onError(error) {
        console.log(error);
    }

    function onLoginPortsChange(loginPorts) {
        console.log('当前登录帐号在其它端的状态发生改变了', loginPorts);
    }

    function onBlacklist(blacklist) {
        console.log('收到黑名单', blacklist);
        data.blacklist = nim.mergeRelations(data.blacklist, blacklist);
        data.blacklist = nim.cutRelations(data.blacklist, blacklist.invalid);
        refreshBlacklistUI();
    }
    function onMarkInBlacklist(obj) {
        console.log(obj);
        console.log(obj.account + '被你在其它端' + (obj.isAdd ? '加入' : '移除') + '黑名单');
        if (obj.isAdd) {
            addToBlacklist(obj);
        } else {
            removeFromBlacklist(obj);
        }
    }
    function addToBlacklist(obj) {
        data.blacklist = nim.mergeRelations(data.blacklist, obj.record);
        refreshBlacklistUI();
    }
    function removeFromBlacklist(obj) {
        data.blacklist = nim.cutRelations(data.blacklist, obj.record);
        refreshBlacklistUI();
    }
    function refreshBlacklistUI() {
        // 刷新界面
    }
    function onMutelist(mutelist) {
        console.log('收到静音列表', mutelist);
        data.mutelist = nim.mergeRelations(data.mutelist, mutelist);
        data.mutelist = nim.cutRelations(data.mutelist, mutelist.invalid);
        refreshMutelistUI();
    }
    function onMarkInMutelist(obj) {
        console.log(obj);
        console.log(obj.account + '被你' + (obj.isAdd ? '加入' : '移除') + '静音列表');
        if (obj.isAdd) {
            addToMutelist(obj);
        } else {
            removeFromMutelist(obj);
        }
    }
    function addToMutelist(obj) {
        data.mutelist = nim.mergeRelations(data.mutelist, obj.record);
        refreshMutelistUI();
    }
    function removeFromMutelist(obj) {
        data.mutelist = nim.cutRelations(data.mutelist, obj.record);
        refreshMutelistUI();
    }
    function refreshMutelistUI() {
        // 刷新界面
    }

    function onFriends(friends) {
        console.log('收到好友列表', friends);
        data.friends = nim.mergeFriends(data.friends, friends);
        data.friends = nim.cutFriends(data.friends, friends.invalid);
        refreshFriendsUI();
    }
    function onSyncFriendAction(obj) {
        console.log(obj);
        switch (obj.type) {
        case 'addFriend':
            console.log('你在其它端直接加了一个好友' + obj.account + ', 附言' + obj.ps);
            onAddFriend(obj.friend);
            break;
        case 'applyFriend':
            console.log('你在其它端申请加了一个好友' + obj.account + ', 附言' + obj.ps);
            break;
        case 'passFriendApply':
            console.log('你在其它端通过了一个好友申请' + obj.account + ', 附言' + obj.ps);
            onAddFriend(obj.friend);
            break;
        case 'rejectFriendApply':
            console.log('你在其它端拒绝了一个好友申请' + obj.account + ', 附言' + obj.ps);
            break;
        case 'deleteFriend':
            console.log('你在其它端删了一个好友' + obj.account);
            onDeleteFriend(obj.account);
            break;
        case 'updateFriend':
            console.log('你在其它端更新了一个好友', obj.friend);
            onUpdateFriend(obj.friend);
            break;
        }
    }
    function onAddFriend(friend) {
        data.friends = nim.mergeFriends(data.friends, friend);
        refreshFriendsUI();
    }
    function onDeleteFriend(account) {
        data.friends = nim.cutFriendsByAccounts(data.friends, account);
        refreshFriendsUI();
    }
    function onUpdateFriend(friend) {
        data.friends = nim.mergeFriends(data.friends, friend);
        refreshFriendsUI();
    }
    function refreshFriendsUI() {
        // 刷新界面
    }

    function onMyInfo(user) {
        console.log('收到我的名片', user);
        data.myInfo = user;
        updateMyInfoUI();
    }
    function onUpdateMyInfo(user) {
        console.log('我的名片更新了', user);
        data.myInfo = NIM.util.merge(data.myInfo, user);
        updateMyInfoUI();
    }
    function updateMyInfoUI() {
        // 刷新界面
    }
    function onUsers(users) {
        console.log('收到用户名片列表', users);
        data.users = nim.mergeUsers(data.users, users);
    }
    function onUpdateUser(user) {
        console.log('用户名片更新了', user);
        data.users = nim.mergeUsers(data.users, user);
    }
    function onTeams(teams) {
        console.log('群列表', teams);
        data.teams = nim.mergeTeams(data.teams, teams);
        onInvalidTeams(teams.invalid);
    }
    function onInvalidTeams(teams) {
        data.teams = nim.cutTeams(data.teams, teams);
        data.invalidTeams = nim.mergeTeams(data.invalidTeams, teams);
        refreshTeamsUI();
    }
    function onCreateTeam(team) {
        console.log('你创建了一个群', team);
        data.teams = nim.mergeTeams(data.teams, team);
        refreshTeamsUI();
        onTeamMembers({
            teamId: team.teamId,
            members: owner
        });
    }
    function refreshTeamsUI() {
        // 刷新界面
    }
    function onTeamMembers(teamId, members) {
        console.log('群id', teamId, '群成员', members);
        var teamId = obj.teamId;
        var members = obj.members;
        data.teamMembers = data.teamMembers || {};
        data.teamMembers[teamId] = nim.mergeTeamMembers(data.teamMembers[teamId], members);
        data.teamMembers[teamId] = nim.cutTeamMembers(data.teamMembers[teamId], members.invalid);
        refreshTeamMembersUI();
    }
    // function onSyncTeamMembersDone() {
    //     console.log('同步群列表完成');
    // }
    function onUpdateTeam (team) {
        console.log('群状态更新', team)
    }
    function onUpdateTeamMember(teamMember) {
        console.log('群成员信息更新了', teamMember);
        onTeamMembers({
            teamId: teamMember.teamId,
            members: teamMember
        });
    }
    function refreshTeamMembersUI() {
        // 刷新界面
    }
    function onTeamMsgReceipt (teamMsgReceipts) {
        console.log('群消息已读通知', teamMsgReceipts)
    }

    function onSessions(sessions) {
        console.log('收到会话列表', sessions);
        data.sessions = nim.mergeSessions(data.sessions, sessions);
        updateSessionsUI();
    }
    function onUpdateSession(session) {
        console.log('会话更新了', session);
        data.sessions = nim.mergeSessions(data.sessions, session);
        updateSessionsUI();
    }
    function updateSessionsUI() {
        // 刷新界面
    }

    function onRoamingMsgs(obj) {
        console.log('漫游消息', obj);
        pushMsg(obj.msgs);
    }
    function onOfflineMsgs(obj) {
        console.log('离线消息', obj);
        pushMsg(obj.msgs);
    }
    function onMsg(msg) {
        console.log('收到消息', msg.scene, msg.type, msg);
        pushMsg(msg);
    }
    function onBroadcastMsg(msg) {
        console.log('收到广播消息', msg);
    }
    function onBroadcastMsgs(msgs) {
        console.log('收到广播消息列表', msgs);
    }
    function pushMsg(msgs) {
        if (!Array.isArray(msgs)) { msgs = [msgs]; }
        var sessionId = msgs[0].sessionId;
        data.msgs = data.msgs || {};
        data.msgs[sessionId] = nim.mergeMsgs(data.msgs[sessionId], msgs);
    }

    function onOfflineSysMsgs(sysMsgs) {
        console.log('收到离线系统通知', sysMsgs);
        pushSysMsgs(sysMsgs);
    }
    function onSysMsg(sysMsg) {
        console.log('收到系统通知', sysMsg)
        pushSysMsgs(sysMsg);
    }
    function onUpdateSysMsg(sysMsg) {
        pushSysMsgs(sysMsg);
    }
    function pushSysMsgs(sysMsgs) {
        data.sysMsgs = nim.mergeSysMsgs(data.sysMsgs, sysMsgs);
        refreshSysMsgsUI();
    }
    function onSysMsgUnread(obj) {
        console.log('收到系统通知未读数', obj);
        data.sysMsgUnread = obj;
        refreshSysMsgsUI();
    }
    function onUpdateSysMsgUnread(obj) {
        console.log('系统通知未读数更新了', obj);
        data.sysMsgUnread = obj;
        refreshSysMsgsUI();
    }
    function refreshSysMsgsUI() {
        // 刷新界面
    }
    function onOfflineCustomSysMsgs(sysMsgs) {
        console.log('收到离线自定义系统通知', sysMsgs);
    }
    function onCustomSysMsg(sysMsg) {
        console.log('收到自定义系统通知', sysMsg);
    }

    function onSyncDone() {
        console.log('同步完成');
    }

清除单例实例

web sdk 连接实例均为单例模式，但可以调用相应接口清除内存中记录的实例，即断开连接，清除内存消息记录及时间戳，方便开发者做到干净重连。

  var nim = NIM.getInstance({...})
  // 清除实例
  nim.destroy({
    done: function (err) {
      console.log('实例已被完全清除')
    }
  })
`

注意：

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