百度智能小程序 通过发送数据

swan.sendSocketMessage

解释：通过 WebSocket 连接发送数据，需要先调用 swan.connectSocket，并在 swan.onSocketOpen 回调之后才能发送。

方法参数

Object object

object 参数说明

示例

图片示例

代码示例 1 ： 

在开发者工具中打开

<button type="primary" bindtap="sendSocketMessage">发送消息</button>

Page({
    sendSocketMessage() { 
        swan.onSocketOpen(function () {
            swan.sendSocketMessage({
                data: 'baidu',
                success: res => {
                    swan.showToast({
                        title: 'WebSocket发送数据成功',
                        icon: "none"
                    });
                    console.log('WebSocket发送数据成功', res);
                },
                fail: err => {
                    console.log('WebSocket发送数据失败', err);
                }
            });
        });

        swan.connectSocket({
            url: 'wss://echo.websocket.org',
            header: {},
            success: res => {
                console.log('connectSocket success', res);
            },
            fail: err => {
                console.log('connectSocket fail', err);
            }
        });
    }
});

代码示例 2 - 示例 1 的另一种写法 ： 

在开发者工具中打开

<button type="primary" bindtap="sendSocketMessage">发送消息</button>

Page({
    sendSocketMessage() { 
        new Promise((resolve, reject) => {
            const socketHandler = swan.connectSocket({
                url: 'wss://echo.websocket.org',
                header: {},
                success: function (res) {
                    console.log('connectSocket success', res.socketTaskId)
                },
                fail: function (err) {
                    reject(err);
                    console.log('connectSocket fail', err);
                }
            });
            socketHandler.onOpen(function () {
                resolve(socketHandler);
            });
        })
        .then(socketHandler => {
            swan.sendSocketMessage({
                data: 'baidu',
                success: res => {
                    swan.showToast({
                        title: 'WebSocket发送数据成功',
                        icon: "none"
                    });
                    console.log('WebSocket发送数据成功', res);
                },
                fail: err => {
                    console.log('WebSocket发送数据失败', err);
                }
            });
        })    
    }
});

错误码

Android

iOS