去中心化金融（DeFi）锁仓质押逻辑通常涉及到智能合约。这里我们提供一个简化版的DeFi锁仓质押逻辑代码示例。这个示例基于以太坊区块链，使用Solidity编写智能合约。
请注意，这个示例仅供参考，实际开发中可能需要根据具体需求进行调整。
```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
contract DeFiStaking is ERC20("DeFiStaking", "DFS"), Ownable, Pausable {
// 定义锁仓质押状态
enum StakingStatus { Active, Locked, Unlocking }
// 定义锁仓质押结构体
struct StakingRecord {
address user;
uint256 amount;
uint256 unlockTime;
StakingStatus status;
}
// 锁仓质押映射
mapping(address => StakingRecord[]) public stakingRecords;
// 事件
event Staked(address user, uint256 amount, uint256 unlockTime);
event Unstaked(address user, uint256 amount);
event EmergencyUnstaked(address user, uint256 amount);
// 锁仓质押
function stake(uint256 amount) external whenNotPaused {
require(amount > 0, "Amount must be greater than zero");
// 检查用户是否有足够的代币
require(ERC20(address(this)).balanceOf(msg.sender) >= amount, "Insufficient balance");
// 更新质押记录
stakingRecords[msg.sender].push(StakingRecord(msg.sender, amount, block.timestamp + 7 days, StakingStatus.Locked));
// 更新总质押量和用户质押量
_updateTotalStaked();
// 触发质押事件
