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功能强大的web3j以太坊用例，支持批量生成钱包，批量不同账户转账，查询余额等，监控，定时任务，交易mint等方法，持续更新中... ...

Java 100.00%

web3j web3 eth ethereum ethereum-contract

web3jdemo's Introduction

简介

基础web3j基础上手款Demo 持续更新，做到web3j无脑交易套利第一工具，自动买卖、跟单、追踪机构地址、设置利润点、设置价格、抢跑区块等... ...

代码开源。
web3j是一个用于访问以太坊的轻量级的java库，用于连接客户端和以太坊区块链结点。

说明文档

持续更新中...... web3j对基础开发者调用不太友好， JS版本对开发周期和成本相对比较简单. 描述上述功能均为组合功能，需要对基础方法有一定了解，设计好流程思路, 声明：恶意使用，组合编码，产生法律风险自负

原博客 http://blog.csdn.net/baidu_30084597 现博客 https://blog.csdn.net/weixin_41602901

抽空把所有功能更新全吧，再做个网页提供使用说实在的，写脚本真的很无聊

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web3jdemo's Issues

Discussed in #9

^{Originally posted by jambestwick February 28, 2022}
test about web3j

TokenClient里面的transferFrom函数单词写错了

TokenClient里面的transferFrom函数单词写错了，代码里面写成了transferForm

public boolean mintNFTByAmount(Web3j web3j, String contractAddress, int amount) {
if (web3j == null) return false;
String methodName = "mint";
String fromAddr = emptyAddress;
Function function = new Function(
methodName,
Arrays.asList(new Uint256(amount)),
Arrays.asList(new TypeReference() {
}));

    String data = FunctionEncoder.encode(function);
    Transaction transaction = Transaction.createEthCallTransaction(fromAddr, contractAddress, data);

    EthCall ethCall;
    try {
        ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).sendAsync().get();
        //List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters());
    } catch (InterruptedException | ExecutionException e) {
        e.printStackTrace();
    }
    return true;
}


/**
 * 调用NFT的Mint方法根据合约有两种
 * Function: mint(address _to, uint256 _mintAmount)
 ***/
public  boolean mintNFTByAmountAndAddress(Web3j web3j, Credentials credentials, String contractAddress, int amount) {
    if (web3j == null) return false;
    if (credentials == null) return false;
    String methodName = "mint";
    String fromAddr = emptyAddress;
    Function function = new Function(
            methodName,
            Arrays.asList(new Address(credentials.getAddress()), new Uint256(amount)),
            Arrays.asList(new TypeReference<Type>() {
            }));

    String data = FunctionEncoder.encode(function);
    Transaction transaction = Transaction.createEthCallTransaction(fromAddr, contractAddress, data);

    EthCall ethCall;
    try {
        ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).sendAsync().get();
        //List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters());
    } catch (InterruptedException | ExecutionException e) {
        e.printStackTrace();
    }
    return true;
}

have some problem for contract 721

jambestwick / web3jdemo Goto Github PK

web3jdemo's Introduction

简介

基础web3j基础上手款Demo 持续更新，做到web3j无脑交易 套利第一工具，自动买卖、跟单、追踪机构地址、设置利润点、设置价格、抢跑区块等... ...

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