java对接以太坊eth钱包(以太坊钱包使用∮教程)

随着区块链技术的不断发展，以太坊已经成为了最受欢迎的公链之一。而Java作为一门广泛使用的编程语言，也逐渐成为了开发者们进行区块链开发的重要工具之一。本文将介绍如何使用Java对接以太坊eth钱包。

1. 安装Java环境

我们需要确保已经安装好了Java环境。如果没有安装▂，可以从Oracle官网下载并安装Java SE Development Kit(JDK)。

1. 添加Maven依赖

在开始编写代码之前，我们需要在项目中添加Maven依赖。在pom.xml文件中添加以下依＠赖：

```xml

org.web3j

core

4.8.7

org.web3j

quorum-rpc

4.8.7

```

这里的版本号可以根据实际情况进行调整。

1. 连接eth钱包

接下来，我们需要连接到eth钱包。这里我们使用Infura提供的API接口。首先需要在Infura官网注册账号＠ 并获取API密钥。然后在代码中添加以下内容：

```java

import org.web3j.protocol.Web3j;

import org.web3j.protocol.core.DefaultBlockParameterName;

import org.web3j.protocol.core.methods.response.EthAccounts;

import org.web3j.protocol.http.HttpService;

import org.web3j.tx.gas.ContractGasProvider;

import java.math.BigInteger;

import java.util.Arrays;

import java.util.List;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.TimeoutException;

public class WalletConnector {

private static final String INFAURA_API_KEY = "your-infura-api-key"; //替换为自己的Infura API密钥

private static final String ETHEREUM_PROTOCOL = "https://mainnet.infura.io/v3/" + INFAURA_API_KEY; //以太坊主网协议地址

private static final String ETHEREUM_ABI = "[{" + "\"constant\":true,\"inputs\":[],\"name":\"name\",\"outputs\":[{" + "\"internalType\":\"string\"," + "\"name\":\"\"," + "\"type\":\"string\"}]},{" + "\"constant\":false,\"inputs\":[{" + "\"internalType\":\"address[]\"," + "\"name\":\"accounts\"," + "\"type":\"address[]\"}]," + "\"name\":\"balanceOf\",\"outputs\":[{" + "\"internalType\":\"uint256\"," + "\"name\":\"\"," + "\"type\":\"uint256\"}]},{" + "\"constant\":false," + "\"inputs":[{" + "\"internalType":\"address\"," + "\"name\":\"account\"," + "\"type\":\"address\"}]," + "\"name":\"transferFrom\",\"outputs\":[{" + "\"internalType\":\"bool\"," + "\"name\":\"success\"," + "\"type\":\"bool')},{" + "\"payable\":true," + "\"stateMutability":{\"view\": \"public\"}," + "\"type\": \"constructor'},{\"anonymous\": true," + "inputs\": [{\"indexed\": false, \"internalType\": \"address[]\"," + \"name\": \"fromAddress\", \"type

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