CWallet::CreateWalletFromFile

如果编译宏ENABLE_WALLET打开（缺省），并且命令行参数-disablewallet没有设置，则从-wallet输入参数指定的文件中加载钱包数据，缺省是wallet.dat

// ********************************************************* Step 8: load wallet
#ifdef ENABLE_WALLET
    if (!OpenWallets())
        return false;
#else
    LogPrintf("No wallet support compiled in!\n");
#endif

bool OpenWallets()
{
    if (gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET)) {
        LogPrintf("Wallet disabled!\n");
        return true;
    }

    for (const std::string& walletFile : gArgs.GetArgs("-wallet")) {
        CWallet * const pwallet = CWallet::CreateWalletFromFile(walletFile);
        if (!pwallet) {
            return false;
        }
        vpwallets.push_back(pwallet);
    }

    return true;
}