Web3j读取sinle事务的所有发出的事件

import org.web3j.abi.EventEncoder;
import org.web3j.abi.TypeReference;
import import org.web3j.abi.datatypes.Event;
import org.web3j.abi.datatypes.generated.Uint256;
import org.web3j.protocol.Web3j;
import org.web3j.protocol.core.DefaultBlockParameter;
import org.web3j.protocol.core.DefaultBlockParameterName;
import org.web3j.protocol.core.methods.request.EthFilter;
import org.web3j.protocol.http.HttpService;
import org.web3j.tx.Contract;
import org.web3j.tx.TransactionManager;
import org.web3j.tx.gas.DefaultGasProvider;

import java.util.Arrays;
import java.util.List;

public class EventReader {
    public static void main(String[] args) throws Exception {
        // 连接到以太坊网络
        Web3j web3j = Web3j.build(new HttpService("https://ropsten.infura.io/v3/your-infura-project-id"));

        // 加载智能合约的ABI和地址
        String contractAddress = "0x1234567890abcdef1234567890abcdef12345678";
        String abi = "[{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"MyEvent\",\"type\":\"event\"}]";

        // 创建合约对象
        Event event = new Event("MyEvent",
                Arrays.asList(new TypeReference<Uint256>() {}));
        EthFilter filter = new EthFilter(DefaultBlockParameterName.EARLIEST,
                DefaultBlockParameterName.LATEST, contractAddress);
        filter.addSingleTopic(EventEncoder.encode(event));

        // 获取过去发生的事件
        List<Contract.EventValuesWithLog> events = web3j.ethGetLogs(filter).send().getLogs();

        // 遍历事件列表，打印事件信息
        for (Contract.EventValuesWithLog eventValues : events) {
            System.out.println("Block number: " + eventValues.getLog().getBlockNumber());
            System.out.println("Transaction hash: " + eventValues.getLog().getTransactionHash());
            System.out.println("Event parameters: " + eventValues.getNonIndexedValues());
        }
    }
}