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代码:
import { AsyncStorage }from'react-native';
import init from 'react_native_mqtt';
init({
size: 10000,
storageBackend: AsyncStorage,
defaultExpires: 1000 * 3600 * 24,
enableCache: true,
reconnect: true,
sync: {}
});
//第一步:创建
// 地址,端口,路径(这么写就行了),connectId(随便写) :地址和端口,都是后台给,或者你自己弄个mqtt的服务
//完整路径为:mqtt://192.168.22.149:1883
let client = new Paho.MQTT.Client('192.168.22.149',1883,'/mqtt','aaa')
//第二步:连接,暂时有一个参数,2个方法:成功,失败
client.connect({
useSSL: false,
onSuccess: onConnect,
onFailure:(e)=>{ console.log('失败'); console.log(e); }
});
// 成功后需要发送主题 ,就是一个接口的路径类似
function onConnect(){
console.log('成功');
client.subscribe('/fangtao');
}
//第三步:断掉
// client.onConnectionLost = onConnectionLost;
// function onConnectionLost (responseObject) {
// if (responseObject.errorCode !== 0) {
// console.log('onConnectionLost:' + responseObject.errorMessage);
// }
// }
// 第四步:接收消息
client.onMessageArrived = onMessageArrived;
function onMessageArrived (message) {
console.log('消息:' + message.payloadString);
}
版本:
"react": "16.9.0",
"react-native": "0.61.1",
"react_native_mqtt": "^1.3.1"
报错信息:
失败
{"errorCode":7,"errorMessage":"AMQJS0007E Socket error:undefined.","invocationContext":undefined}
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