# Code Example (v2)

- [使用私钥通过 API 购买能源](https://docs.tronsave.io/chinese/full-code-example/code-example-v2/buy-resource-by-api-using-private-key.md): 这是使用私钥通过 API 密钥购买能源的完整示例
- [使用 API 密钥通过 API 购买能源](https://docs.tronsave.io/chinese/full-code-example/code-example-v2/buy-resources-by-api-using-api-key.md): 这是使用 API 密钥通过 API 密钥购买能源的完整示例
- [使用 API 密钥通过 API 扩展订单](https://docs.tronsave.io/chinese/full-code-example/code-example-v2/extend-order-by-api-using-api-key.md): 这是使用 API 密钥通过 API 扩展订单的完整示例。
- [使用私钥通过 API 扩展订单](https://docs.tronsave.io/chinese/full-code-example/code-example-v2/extend-order-by-api-using-private-key.md): 这是使用私钥通过 API 密钥扩展订单的完整示例。


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