Strophe.js - 如何通过其成员获得一组名单?

时间:2018-01-24 19:24:42

标签: xmpp ejabberd strophe

使用此Strophe命令时:

var iq = $iq({type: 'get'}).c('query', {xmlns: 'jabber:iq:roster'}); 
connection.sendIQ(iq)

我认为这是成功的回调:

<iq xmlns="jabber:client" xml:lang="pt-br" to="user01@localhost/100164477219111523302818" from="user01@localhost" type="result" id="82480785-c170-48d1-a180-bcadbff957d2:sendIQ">
  <query xmlns="jabber:iq:roster">
    <item subscription="both" jid="user02@localhost">
      <group>Roster01</group>
      <group>Roster02</group>
    </item>
    <item subscription="both" jid="admin@localhost">
      <group>Roster01</group>
      <group>Roster02</group>
    </item>
    <item subscription="both" jid="grupo02@conference.localhost">
      <group>Roster02</group>
    </item>
    <item subscription="both" jid="grupo01@conference.localhost">
      <group>Roster01</group>
    </item>
  </query>
</iq>

我想知道的是,是否有某种方法可以按群组及其成员对此回调进行分组。如果没有,我怎么能用Javascript来做。示例:

  • 名册01有admin,user02和grupo01
  • 名册02有admin,user02和grupo02

我使用ejabberd作为XMPP服务器,Ionic 3使用Strophe作为客户端。

1 个答案:

答案 0 :(得分:2)

我建议使用strophejs-plugin-roster让事情变得更轻松:

// connect Strophe
connection = new Strophe.Connection(url);
connection.connect(my_jid, my_pwd, onConnect);

...

function onConnect(status) {
    if (status == Strophe.Status.CONNECTED) {
        ...

        // pass connection to roster plugin
        connection.roster.init(connection);
    }
}

这是一个通过插件获取getRoster的函数,result是一个包含对象的JS数组(而不是XML ...):

function getRoster() {
    connection.roster.get(function (roster) {
        console.log('   >roster:', roster);
        for (var i in roster) {
            console.log('   >buddy '+i+':');
            console.log('       >'+roster[i].name+" ("+roster[i].jid+' -->'+roster[i].subscription);
            console.log('       >', roster[i].groups);
        }
        // get buddies belonging to group1 and group2 (see below)
        console.log('   >roster-group1:', getRosterGroup(roster, 'group1'));
        console.log('   >roster-group2:', getRosterGroup(roster, 'group2'));
    });
}

以下功能按群组过滤好友:

function getRosterGroup(roster, group) {
    var reduced = roster.reduce(function(filtered, item) {
        if (item.groups.indexOf(group)!==-1) {
            filtered.push(item);
        }
        return filtered;
    }, []);
    return reduced;
}

这是一个有效的Plunker:http://plnkr.co/edit/XloJABSGHZvLTp3Js2KI?p=preview