Substrate 如何将十六进制字符串转换为Vec<；u8>；

我想将作为外部数据获得的十六进制字符串转换为托盘中的Vec。 出于这个原因，我尝试使用“hex:：decode”，但我得到了以下编译错误，无法使用它。 你能告诉我一个解决方法或替代方法吗

我下面有错误

  error: duplicate lang item in crate `sp_io` (which `pallet_offchain` depends on): `panic_impl`.
    |
    = note: the lang item is first defined in crate `std` (which `hex` depends on)
    = note: first definition in `std` loaded from /Users/shin.takahashi/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/wasm32-unknown-unknown/lib/libstd-38314f0df48bc600.rlib
    = note: second definition in `sp_io` loaded from /Users/shin.takahashi/develop/substrate/newest_node_template/substrate-node-template/target/release/wbuild/node-template-runtime/target/wasm32-unknown-unknown/release/deps/libsp_io-33eeda8e29be2065.rmeta

  error: duplicate lang item in crate `sp_io` (which `pallet_offchain` depends on): `oom`.
    |
    = note: the lang item is first defined in crate `std` (which `hex` depends on)
    = note: first definition in `std` loaded from /Users/shin.takahashi/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/wasm32-unknown-unknown/lib/libstd-38314f0df48bc600.rlib
    = note: second definition in `sp_io` loaded from /Users/shin.takahashi/develop/substrate/newest_node_template/substrate-node-template/target/release/wbuild/node-template-runtime/target/wasm32-unknown-unknown/release/deps/libsp_io-33eeda8e29be2065.rmeta

  error: aborting due to 2 previous errors; 6 warnings emitted

fn get_decoded_address(address:&str)-> Vec<u8> {
    //value of address is like following. "0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d"
    hex::decode(&address).unwrap()
}

我的代码如下所示

  error: duplicate lang item in crate `sp_io` (which `pallet_offchain` depends on): `panic_impl`.
    |
    = note: the lang item is first defined in crate `std` (which `hex` depends on)
    = note: first definition in `std` loaded from /Users/shin.takahashi/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/wasm32-unknown-unknown/lib/libstd-38314f0df48bc600.rlib
    = note: second definition in `sp_io` loaded from /Users/shin.takahashi/develop/substrate/newest_node_template/substrate-node-template/target/release/wbuild/node-template-runtime/target/wasm32-unknown-unknown/release/deps/libsp_io-33eeda8e29be2065.rmeta

  error: duplicate lang item in crate `sp_io` (which `pallet_offchain` depends on): `oom`.
    |
    = note: the lang item is first defined in crate `std` (which `hex` depends on)
    = note: first definition in `std` loaded from /Users/shin.takahashi/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/wasm32-unknown-unknown/lib/libstd-38314f0df48bc600.rlib
    = note: second definition in `sp_io` loaded from /Users/shin.takahashi/develop/substrate/newest_node_template/substrate-node-template/target/release/wbuild/node-template-runtime/target/wasm32-unknown-unknown/release/deps/libsp_io-33eeda8e29be2065.rmeta

  error: aborting due to 2 previous errors; 6 warnings emitted

fn get_decoded_address(address:&str)-> Vec<u8> {
    //value of address is like following. "0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d"
    hex::decode(&address).unwrap()
}

fn获取解码地址（地址：&str）->Vec{
//地址值如下所示。“0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d”
十六进制：：解码（&地址）。展开（）
}

我必须正确编写“Cargo.toml”。下面是一个例子

rustc-hex = { version="2.1.0", default-features = false }

[features]
default = ['std']
std = [
    'rustc-hex/std',
]

---

我希望以字符串形式接收类似下面的AccountId，将其分配给调色板上的AccountId，然后将钱发送给该AccountId。“0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d”您需要导入带有

默认特性=false的
十六进制，然后将
hex/std
添加到您的托盘/运行时的
std
功能中。如果这个^^^有帮助，您可以自己发布它作为答案。谢谢您的帮助。它起作用了。很抱歉，我没有阅读基板的文档。我稍后再写答案。