开发一套ERP 第八弹 RUst 插入数据

在这里插入图片描述

更全面的报错,方便检查错误在哪里,现代高级语言越来越智能

还是得看下原文档怎么操作的

src 目录为crate 的根目录

想在crate 中模块相互引入需要在 main 中声明,各个模块,然后才能在各个模块中相互引入和使用

原始工程引入,避免直接使用 lib.rs 回合cargo 中的一些工程管理出现冲突,在tauri2.0 的crate 中可以进行调用和使用

use super::data;
use data::mysql::MysqlPoolConnect;
use data::base::ListData;
use mysql::params;
use mysql::prelude::Queryable;pub fn test_mysql(){match MysqlPoolConnect(3, 1) {Ok(mut pool)=>{let rows = vec![ListData { id:12,name:Some("hello world".into()),color:Some("测试颜色".into()),name_and_color:Some("white".into()),avatar:Some("/etc/pictures".into()),zh_size:Some("34-43".into()),u_size:Some("53-78".into()),diff:100,factory_name:Some("baidu".into()),output:64,input:89,threshold:100,input_date:Some("2024-11-29".into()),output_date:Some("2024-11-29".into())},];println!("connect mysql service okay !!!");println!("test struct ListData is okay?");for it in rows.iter() { println!("{:?}",it);}let result = pool.exec_batch(r"INSERT INTO INBOUND(id,name,color,name_and_color,avatar,zh_size,u_size,factory_name,input,input_date)VALUES (:id,:name,:color,:name_and_color,:avatar,:zh_size,:u_size,:factory_name,:input,:input_date)",rows.iter().map(|p| params! {"id" => p.id,"name" => &p.name,"color" => &p.color,"name_and_color" => &p.name_and_color,"avatar" => &p.avatar,"zh_size" => &p.zh_size,"u_size" => &p.u_size,"factory_name" => &p.factory_name,"input" => p.input,"input_date" => &p.input_date}));match result {Ok(_) => println!("Insert Into database Okay ... ..."),Err(e) => println!("Insert Into database error {}",e)}},Err(e) => {eprintln!("Error:{}",e);},}
}

插入的数据字段最好用蛇形命名,要不容易出现,插入出错,

数据中包含： input, inputDate ，改成蛇形命名后,可以正常插入,仅限于Rust mysql crate 的使用

mysql 对日期的范围筛选很友好

#[allow(dead_code)]
pub fn inbound_row_insert(rows:Vec<ListData>) -> Result<(),Error> {let res;match MysqlPoolConnect(3, 1){Ok(mut pool) => {
let result = pool.exec_batch(r"INSERT INTO INBOUND(id,name,color,name_and_color,avatar,zh_size,u_size,factory_name,input,input_date)
VALUES (:id,:name,:color,:name_and_color,:avatar,:zh_size,:u_size,:factory_name,:input,:input_date)",rows.iter().map(|p| params! {"id" => p.id,"name" => &p.name,"color" => &p.color,"name_and_color" => &p.name_and_color,"avatar" => &p.avatar,"zh_size" => &p.zh_size,"u_size" => &p.u_size,"factory_name" => &p.factory_name,"input" => p.input,"input_date" => &p.input_date
}));
res = result;},
Err(e) => {res = Err(e);}};res
}

在封装一层函数

rUST 的宏定义还是很有意思的

#[macro_export]
macro_rules! params {() => {};(@to_pair $map:expr, $name:expr => $value:expr) => (let entry = $map.entry(std::vec::Vec::<u8>::from($name));if let std::collections::hash_map::Entry::Occupied(_) = entry {panic!("Redefinition of named parameter `{}'", std::string::String::from_utf8_lossy(entry.key()));} else {entry.or_insert($crate::value::Value::from($value));});(@to_pair $map:expr, $name:ident) => (let entry = $map.entry(stringify!($name).as_bytes().to_vec());if let std::collections::hash_map::Entry::Occupied(_) = entry {panic!("Redefinition of named parameter `{}'", std::string::String::from_utf8_lossy(entry.key()));} else {entry.or_insert($crate::value::Value::from($name));});(@expand $map:expr;) => {};(@expand $map:expr; $name:expr => $value:expr, $($tail:tt)*) => {params!(@to_pair $map, $name => $value);params!(@expand $map; $($tail)*);};(@expand $map:expr; $name:expr => $value:expr $(, $tail:tt)*) => {params!(@to_pair $map, $name => $value);params!(@expand $map; $($tail)*);};(@expand $map:expr; $name:ident, $($tail:tt)*) => {params!(@to_pair $map, $name);params!(@expand $map; $($tail)*);};(@expand $map:expr; $name:ident $(, $tail:tt)*) => {params!(@to_pair $map, $name);params!(@expand $map; $($tail)*);};($i:ident, $($tail:tt)*) => {{let mut map: std::collections::HashMap<std::vec::Vec<u8>, $crate::value::Value, _> = std::default::Default::default();params!(@expand (&mut map); $i, $($tail)*);$crate::params::Params::Named(map)}};($i:expr => $($tail:tt)*) => {{let mut map: std::collections::HashMap<std::vec::Vec<u8>, $crate::value::Value, _> = std::default::Default::default();params!(@expand (&mut map); $i => $($tail)*);$crate::params::Params::Named(map)}};($i:ident) => {{let mut map: std::collections::HashMap<std::vec::Vec<u8>, $crate::value::Value, _> = std::default::Default::default();params!(@expand (&mut map); $i);$crate::params::Params::Named(map)}}
}