使用sendSignedTransaction方式调用合约方法

web3Client.eth.call不会在区块链上生成交易

web3Client.eth.sendSignedTransaction会在区块链上生成交易

1. 利用call向以太坊发送交易

function rawTransCall(contractName,functionName,functionParams) {
    let rawTx = {},
        usingContract,
        usingContractJson,
        funcABI,
        encodefunc;

    if(contractName === lotteryGameEngineName){
        usingContract = lotteryGameEngineInst;
        usingContractJson = lotteryGameEngineJSON;
    }else if(contractName === lottery3DNumberName){
        usingContract = lottery3DNumberInst;
        usingContractJson = lottery3DNumberJSON;
    }
    funcABI = usingContractJson['abi'].filter(per=>{ //返回数组
        return per.name === functionName;
    });
    encodefunc = web3Client.eth.abi.encodeFunctionCall(funcABI[0],functionParams);
    rawTx['to'] = usingContract.address;
    rawTx['data'] = encodefunc;
    logger.debug("final call rawTx:",rawTx);
    return web3Client.eth.call(rawTx).then(callValue => {
        logger.debug("funcABI[0]['outputs']:",funcABI[0]['outputs']);
        logger.debug("called Value result:",JSON.stringify(callValue));
        return web3Client.eth.abi.decodeParameters(funcABI[0]['outputs'],callValue);//funcABI[0]['outputs']
    });
}

2. 利用sendSignedTransaction向以太坊发送交易

function rawTransSend (callUserInfo,contractName,functionName,functionParams) {
    let rawTx = {
      from: '',
      gasLimit: '0x52080',//7a1200=>800,0000    ('21000'=>'0x5208')
      gasPrice: '',//web3.eth.getGasPrice
      nonce: 0,  //web3.eth.getTransactionCount(address, 'pending')
      to: '',//contract address
      value: '0x00', //0 for contact,
      data: '' //contract method and parameters
    },
      usingContract,
      usingContractJson,

      caller,
      callerPrivatekey,
      callerValue = '0x00',
      privatekey,

      funcABI,
      encodefunc,
      tx,
      serializedTx
    ;
    logger.debug("functionParams:",functionParams);

    callerPrivatekey = callUserInfo.privatekey;
    caller = callUserInfo.account;
    if(callUserInfo.value !== undefined){
        callerValue = web3Client.utils.toHex(web3Client.utils.toWei(callUserInfo.value, 'ether'));
    }
    logger.debug("callerValue:",callerValue);
    if(contractName === lotteryGameEngineName){
      usingContract = lotteryGameEngineInst;
      usingContractJson = lotteryGameEngineJSON;
    }else if(contractName === lottery3DNumberName){
      usingContract = lottery3DNumberInst;
      usingContractJson = lottery3DNumberJSON;
    }

    privatekey = new Buffer(callerPrivatekey.slice(2),'hex');

    rawTx.from = caller;
    rawTx.to = usingContract.address;
    rawTx.value = callerValue;

    funcABI = usingContractJson['abi'].filter(per=>{ //返回数组
        return per.name === functionName;
    });

    logger.debug("functionParams encoded result:",functionParams);
    return web3Client.eth.getTransactionCount(caller).then(transCounts => {
      rawTx.nonce = transCounts;
      return web3Client.eth.getGasPrice(); // 当前gasPrice
    }).then(gasPrice => {  // wei
      rawTx.gasPrice = web3Client.utils.toHex(gasPrice);
 
 // paramsm默认是Array      ,...functionParams
      encodefunc = web3Client.eth.abi.encodeFunctionCall(funcABI[0],functionParams);
      logger.debug("encodefunc:",encodefunc);
      rawTx.data = encodefunc;
      logger.debug("rawTx final is:",rawTx);
      tx= new Tx(rawTx);
      tx.sign(privatekey);
      serializedTx = tx.serialize();
      logger.debug("raw data:",'0x' + serializedTx.toString('hex'));
      
      return web3Client.eth.sendSignedTransaction('0x' + serializedTx.toString('hex'))
          .on('receipt', function (recepit) {
              console.log("transaction receipt received:"+JSON.stringify(recepit));
              return new Promise((resolve,reject) => {
                  resolve(recepit);
              });
          });
    });// then
}

当使用web3Client.eth.sendSignedTransaction发送交易时，rawTx 为

  { from: '0x554d38376bfe981747588be3af1be303a6a2f7f3',
  gasLimit: '0x52080',
  gasPrice: '0x4a817c800',
  nonce: 1,
  to: '0x92b1dcc19a59de3b913398eeb3974cd155512ca2',
  value: '0x2c68af0bb140000',
  data: '0x4324c69900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001' }

然后根据hash拿到交易信息：

{
  blockHash: "0xcb89942f9d24e93d2325514e1b5abc103a178926d5a42b5a8f84f0388c02c326",
  blockNumber: 22,
  from: "0x554d38376bfe981747588be3af1be303a6a2f7f3",
  gas: 336000,
  gasPrice: 20000000000,
  hash: "0xa6e1de6768b211b37b4f336c2535bd10a1d5cdfd35428eacf5441ad6d0cd7ea6",
  input: "0x4324c69900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001",
  nonce: 1,
  r: "0xbd6bd93ef02d39c5d3214f30a372a8262253dafe9d938320f1ba8a48d39db8d7",
  s: "0x23fd20f1da4f9551ae50cdfef8cb99b20247468262bf403b6c537673dc27baa2",
  to: "0x92b1dcc19a59de3b913398eeb3974cd155512ca2",
  transactionIndex: 0,
  v: "0x1b",
  value: 200000000000000000
}

发现rawTx中data字段和getTransaction中Input字段完全相同。