小程序socket实时聊天如何与数据库进行交互？
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{{item.sender}}: {{item.content}}
// index.wxss
.container {
padding: 10px;
}
.chat-content {
height: 300px;
overflow-y: auto;
}
.message {
margin-bottom: 10px;
}
// index.js
Page({
data: {
messages: [],
socket: null,
inputContent: ''
},
onLoad: function() {
this.connectSocket();
},
connectSocket: function() {
const that = this;
wx.connectSocket({
url: 'wss://yourserver.com/socket',
success: function() {
console.log('WebSocket连接成功');
}
});
that.setData({
socket: wx.getWebSocket()
});
},
onInput: function(e) {
this.setData({
inputContent: e.detail.value
});
},
sendMessage: function() {
const that = this;
const message = {
sender: 'user1',
content: that.data.inputContent
};
that.data.socket.send({
data: JSON.stringify(message),
success: function() {
console.log('消息发送成功');
}
});
that.setData({
inputContent: ''
});
}
});
```
2. 后端代码
```javascript
// server.js
const WebSocket = require('ws');
const mysql = require('mysql');
const wss = new WebSocket.Server({ port: 8080 });
const connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: 'password',
database: 'chat'
});
connection.connect();
wss.on('connection', function(ws) {
ws.on('message', function(message) {
const data = JSON.parse(message);
const sender = data.sender;
const content = data.content;
const sql = 'INSERT INTO chat_records (sender, content) VALUES (?, ?)';
connection.query(sql, [sender, content], function(error, results, fields) {
if (error) {
console.error(error);
} else {
console.log('消息存储成功');
}
});
wss.clients.forEach(function(client) {
if (client.readyState === WebSocket.OPEN) {
client.send(message);
}
});
});
});
```
通过以上示例，我们可以看到小程序socket实时聊天与数据库交互的实现方法。在实际开发过程中，可以根据具体需求进行功能扩展和优化。