50 我想用java代码实现 keccak256(abi.encode(test))功能，但是我的实现和solidity计算的结果不一致。请大神指点一下
solidity代码实现
function getTest2 (string memory test) public pure returns(bytes32){
return keccak256(abi.encode(test));
}java代码实现
public void test() {
String string = "1";
//等价于abi.encode(string)
StringBuilder encodeString = new StringBuilder();
encodeString.append(TypeEncoder.encode(new Utf8String(string)));
System.out.println(encodeString.toString());
//等价于keccak256(abi.encode(string))
byte[] decodeByte = Hex.decode(encodeString.toString());
byte[] reshash = Hash.sha3(decodeByte);
System.out.println("keccStr:"+ new String(Hex.encode(reshash)));
// String reshash3 = Hash.sha3(encodeString.toString());
// System.out.println(reshash3);
}最佳答案 2022-04-21 09:57
来了，写法有问题 java
String h2 = Hex.toHexString("1".getBytes(StandardCharsets.UTF_8));
System.out.println(h2); //"31"
h2 = "0x"+h2;
String d5 = Hash.sha3(h2);
System.out.println(d5); //0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6solidity
bytes memory tt = abi.encodePacked("1");
emit log_named_bytes("abi", tt); //0x31
bytes32 kk = keccak256(tt);
emit log_named_bytes32("keccak256", kk); //0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6bytes memory tt = abi.encode("1");
emit log_named_bytes("abi", tt); // 0x000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000013100000000000000000000000000000000000000000000000000000000000000
bytes32 kk = keccak256(tt);
emit log_named_bytes32("keccak256", kk); //0xc586dcbfc973643dc5f885bf1a38e054d2675b03fe283a5b7337d70dda9f7171String inputstr = TypeEncoder.encode( new DynamicStruct((new Utf8String("1"))));
String hashstr = Hash.sha3String(inputstr);
inputstr = "0x"+ inputstr;
String h1 = Hash.sha3(inputstr);
System.out.println(h1); //0xc586dcbfc973643dc5f885bf1a38e054d2675b03fe283a5b7337d70dda9f7171
