用uniapp 及socket.io做一个简单聊天app 踢人拉黑 7
在聊天群里，以及私聊时，可以点对方头象弹出踢跟拉黑，踢只是让对方退出聊天室。拉黑是记对方退出且不能再进入。
socket.io 中的踢人流程：
将用户从groupUsers 删除，表现在uniapp的界面，就是通知friends页，你这孙子被踢了。只是提示。但还能进去。但是如果是被黑，则是你被踢且删除。这时要求界面进行重新的绑定。将这一个群或将私聊删掉。
const groups = {}; // 存储用户与群组的映射const kickedUsers = {}; // 存储被踢出用户的信息const groupUsers = {}; // 存储每个群组中的用户列表socket.on('kickUser', ({ groupName, userName }) => {for (let id in groups) {if (groups[id].userName === userName && groups[id].groupName === groupName) {io.sockets.sockets.get(id).leave(groupName);io.to(groupName).emit('message', `${userName} 已被踢出群组`);// 从用户列表中删除if (groupUsers[groupName]) {groupUsers[groupName] = groupUsers[groupName].filter(user => user !== userName);io.to(groupName).emit('userList', groupUsers[groupName]);}console.log(`${userName} 被踢出群组 ${groupName}`);if (!kickedUsers[groupName]) {kickedUsers[groupName] = [];}kickedUsers[groupName].push(userName);break;}}});
再加入一个退群功能：
app.get('/leavgroup', authenticateToken, async (req, res) => {try {const userId = req.user.id;let { groupid: group_id } = req.query;await Friend.destroy({ where: {user_id:userId, group_friend_id:group_id,type:'group' } });return res.json({ code:0, message: '退出成功' });} catch (error) {console.log(error)return res.json({ code:1, message: '退出出错' });}
});拉黑的接口：
app.get('/black', authenticateToken, async (req, res) => {try {const userId = req.user.id;let { group_id,name } = req.query;let user = await User.findOne({ where: { username:name } });if(user){let user_id = user.id;if(userId==user_id){return res.json({ code:1, message: '不能拉黑自己' });}if(group_id>0){await Friend.destroy({ where: {user_id:user_id, group_friend_id:group_id,type:'user_id' } });await Invite.destroy({ where: {inviter_id:userId, invitee_id:user_id } });return res.json({ code:0, message: '拉黑成功' });}else{//删除所有的记录await Friend.destroy({ where: {user_id:user_id, group_friend_id:userId,type:'user' } });await Friend.destroy({ where: {user_id:userId , group_friend_id:user_id,type:'user' } });await Invite.destroy({ where: {inviter_id:user_id, invitee_id:userId,group_id } });await Invite.destroy({ where: {inviter_id:userId, invitee_id:user_id ,group_id } });}}return res.json({ code:0, message: '退出成功' });} catch (error) {console.log(error)return res.json({ code:1, message: '退出出错' });}
});