'program' 宏未正确加载

Question

我在编译我的 Rust 程序时遇到问题，当我运行 anchor 时，我收到指向 program 宏的错误测试。是什么导致了这个问题？我尝试了运行ning cargo check 但得到了相同的结果。

lib.rs

use anchor_lang::prelude::*;

declare_id!("Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS");

#[program]
pub mod mycalculatorapp {
    use super::*;
pub fn create(ctx: Context<Create>, init_message: String ) -> Result<()> {

    let calculator = &mut ctx.accounts.calculator;
    calculator.greeting = init_message;
    Ok(())
}
#[derive(Accounts)]
pub struct Create<'info> {
    // #[account(init, payer=user, space=264)]
    // pub calculator: Account<'info, Calculator>,
    #[account(mut)]
    pub user: Signer<'info>,
    pub systems_program: Program<'info, System>
}

#[account]
pub struct Calculator {
    pub greeting: String,
    pub result: i64,
    pub remainder: i64  
}

错误：

error[E0432]: unresolved import `crate`
 --> programs/mycalculatorapp/src/lib.rs:5:1
 |
 | #[program]
 | ^^^^^^^^^^ could not find `__client_accounts_create` in the crate root
 |

error[E0599]: no function or associated item named `try_accounts` found for struct `Create` in the current scope
  --> programs/mycalculatorapp/src/lib.rs:5:1
  |
  | #[program]
  | ^^^^^^^^^^ function or associated item not found in `Create<'_>`
...
  | pub struct Create<'info> {
  | ------------------------ function or associated item `try_accounts` not found for this
  
   = help: items from traits can only be used if the trait is implemented and in scope
   = note: the following trait defines an item `try_accounts`, perhaps you need to implement it:
           candidate #1: `anchor_lang::Accounts`
   = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

Answer 1

您的代码应更改为

use anchor_lang::prelude::*;

declare_id!("Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS");

#[program]
pub mod mycalculatorapp {
    use super::*;
pub fn create(ctx: Context<Create>, init_message: String ) -> Result<()> {

    let calculator = &mut ctx.accounts.calculator;
    calculator.greeting = init_message;
    Ok(())
}
#[derive(Accounts)]
pub struct Create<'info> {
    #[account(init, payer=user, space=264)]
    pub calculator: Account<'info, Calculator>,
    #[account(mut)]
    pub user: Signer<'info>,
    pub system_program: Program<'info, System>
}

#[account]
pub struct Calculator {
    pub greeting: String,
    pub result: i64,
    pub remainder: i64  
}

由于类型而不是 systems_program 你需要 system_program

也提高了 github 的 PR。 https://github.com/devd-99/calculatordapp/pulls/1

随时合并结帐。

'program' 宏未正确加载

'program' macro not correctly loading

cargo

rust

anchor-solana