[区块链]solidity通过 event返回结构体数据

• Solidity

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;

contract eventRequest {
// 结构体
    struct request_data {
        uint code;
        string message;
    }
    // event事件
    event EventRequest(string _desc,request_data);

    // 方法
    function addUser() public {
        emit EventRequest("register",request_data({
            code:200,
            message:"ok"
        }));
    }
}

• Web3js

contract.methods.register().send({from:'钱包地址'})
	.on('receipt',receipt=>{
		contract.getPastEvents('EventRequest', {
			filter: {},
			fromBlock: receipt.blockNumber - 4000,
			toBlock: 'latest'
		}, function(error, events){ })
		.then(function(events){
			console.log('events',events)
			if(events.length > 0){
				let obj = {};
				let temp = events.find(v=>v.transactionHash === receipt.transactionHash)
				obj.code = temp.returnValues[1].code;
				obj.message = temp.returnValues[1].message;
				console.log('eventRequest',obj) //最终的结果
			}
		});
	})