未解决的进口``serde‘/``serde_json`’
未解决的进口``serde‘/``serde_json`’
提问于 2022-09-16 10:52:05
我构建该项目时没有任何明显的错误，但是在编译它时，我遇到了错误E0432，它告诉我，serde和serde_json在Cargo.toml中声明时是找不到的。我试着从头开始重建这个项目，cargo check和cargo build多次，但我仍然被困住了
错误：
error[E0432]: unresolved import `serde`
--> main.rs:1:5
|
1 | use serde::{Deserialize, Serialize};
| ^^^^^ maybe a missing crate `serde`?
error[E0432]: unresolved import `serde_json`
--> main.rs:2:5
|
2 | use serde_json::Result;
| ^^^^^^^^^^ maybe a missing crate `serde_json`?
error: cannot determine resolution for the derive macro `Serialize`
--> main.rs:4:10
|
4 | #[derive(Serialize, Deserialize)]
| ^^^^^^^^^
|
= note: import resolution is stuck, try simplifying macro imports
error: cannot determine resolution for the derive macro `Deserialize`
--> main.rs:4:21
|
4 | #[derive(Serialize, Deserialize)]
| ^^^^^^^^^^^
|
= note: import resolution is stuck, try simplifying macro imports
error[E0433]: failed to resolve: use of undeclared crate or module `serde_json`
--> main.rs:14:32
|
14 | let config: ConfigStruct = serde_json::from_str(&config_data).unwrap();
| ^^^^^^^^^^ use of undeclared crate or module `serde_json`
error: aborting due to 5 previous errors
Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.main.rs文件：
use serde::{Deserialize, Serialize};
use serde_json::Result;
#[derive(Serialize, Deserialize)]
struct ConfigStruct {
playlist_name: String,
replace_cover: bool,
delete_songs: bool,
songs_ids: Vec<String>,
}
fn get_config() -> Result<ConfigStruct> {
let config_data = std::fs::read_to_string("../config.json").unwrap();
let config: ConfigStruct = serde_json::from_str(&config_data).unwrap();
Ok(config)
}
fn main() {
let config = get_config().unwrap();
println!("{}", config.playlist_name);
}Cargo.toml文件：
[package]
name = "grrs"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
serde = {version = "1.0.144", features = ["derive"] }
serde_json = "1.0.85"Cargo.lock文件：
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "grrs"
version = "0.1.0"
dependencies = [
"serde",
"serde_json",
]
[[package]]
name = "itoa"
version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"
[[package]]
name = "proc-macro2"
version = "1.0.43"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
dependencies = [
"unicode-ident",
]
[[package]]
name = "quote"
version = "1.0.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
dependencies = [
"proc-macro2",
]
[[package]]
name = "ryu"
version = "1.0.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
[[package]]
name = "serde"
version = "1.0.144"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
dependencies = [
"serde_derive",
]
[[package]]
name = "serde_derive"
version = "1.0.144"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "serde_json"
version = "1.0.85"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
dependencies = [
"itoa",
"ryu",
"serde",
]
[[package]]
name = "syn"
version = "1.0.99"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "unicode-ident"
version = "1.0.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dcc811dc4066ac62f84f11307873c4850cb653bfa9b1719cee2bd2204a4bc5dd"回答 1
Stack Overflow用户
发布于 2022-09-16 11:09:23
您需要从derive机箱中启用serde特性。
您的cargo.toml文件应该如下所示：
[package]
name = "grrs"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
serde = { version = "1.0.144", features = ["derive"] }
serde_json = "1.0.85"
rspotify = "0.11.5"注意serde依赖解密中的特征键。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/73743712
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