function setupProductEventListner() {
let productEvent;
EcommerceStore.deployed().then(i => {
productEvent = i.NewProduct({fromBlock: 0, toBlock: 'latest'});
console.log(productEvent);
productEvent.watch((error,result)=>{
if (error) {
console.log(error);
return;
}
saveProduct(result.args);
});
})
}
控制台信息
node app/server.js
Ebay Ethereum server listening on port 3000!
EventEmitter {
_events: [Object: null prototype] {},
_eventsCount: 0,
_maxListeners: undefined,
}
(node:34260) UnhandledPromiseRejectionWarning: TypeError: productEvent.watch is not a function
at G:\myProject\ebay_dapp\app\server.js:61:22
at processTicksAndRejections (internal/process/task_queues.js:93:5)
