rust - 构建 Rocket 车把示例时未解决的导入模板

Question

我无法让 Rocket车把示例 工作。这些是我的 Cargo.toml 依赖项：

[dependencies]
rocket = "*"
rocket_codegen = "*"
rocket_contrib = "*"
serde = "*"
serde_json = "*"
serde_derive = "*"

错误：

error[E0432]: unresolved import `rocket_contrib::Template`
  --> src\main.rs:29:5
   |
29 | use rocket_contrib::Template;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ no `Template` in the root

error[E0599]: no method named `attach` found for type `rocket::Rocket` in the current scope
  --> src\main.rs:62:10
   |
62 |         .attach(Template::fairing())
   |          ^^^^^^

第一个错误查找Template并找不到它。在示例的git repo中，它不存在。这个例子怎么可能有效？我确信我的 main.rs 中的 Rust 代码是可以的，它与示例中的相同。我认为这只是一个依赖问题。

我将 Cargo.toml 更改为：

[dependencies]
rocket = "*"
rocket_codegen = "*"
serde = "*"
serde_json = "*"
serde_derive = "*"

[dependencies.rocket_contrib]
version = "*"
features = ["handlebars_templates"]

现在我得到这些错误：

error[E0599]: no method named `attach` found for type `rocket::Rocket` in the current scope
  --> src\main.rs:62:10
   |
62 |         .attach(Template::fairing())
   |          ^^^^^^

error[E0599]: no associated item named `fairing` found for type `rocket_contrib::Template` in the current scope
  --> src\main.rs:62:17
   |
62 |         .attach(Template::fairing())
   |                 ^^^^^^^^^^^^^^^^^

Answer 1

您缺少该handlebars_templates功能。您可以在示例中看到这一点Cargo.toml：

[dependencies.rocket_contrib]
version = "*" # Not a good idea to use * as version
features = ["handlebars_templates"]