json转excel，读取json文件写入到excel中【rust语言】

 一、rust代码

将json文件写入到 excel中。（保持json ：key原始顺序）

use indexmap::IndexMap;
use serde::Deserialize;
use serde_json::{Value, from_str};
use std::error::Error;
use std::io::{self, Write};
use std::path::{Path};
use rust_xlsxwriter::{Workbook, Format, RowNum};
use std::fs;#[derive(Debug, Deserialize)]
struct DataItem {#[serde(flatten)]data: IndexMap<String, Value>,
}fn main() -> Result<(), Box<dyn Error>> {let args: Vec<String> = std::env::args().collect();if args.len() < 3 {writeln!(io::stderr(), "Usage: {} <json_file> <excel_file>", args[0]).unwrap();std::process::exit(1);}let json_path = &args[1];let excel_file_path = &args[2];// 检查输入文件是否存在if !Path::new(json_path).exists() {return Err("输入文件不存在".into());}// 读取并解析JSONlet json_str = fs::read_to_string(json_path).map_err(|e| format!("读取JSON文件失败: {}", e))?;let data_items: Vec<DataItem> = from_str(&json_str).map_err(|e| format!("解析JSON失败: {}", e))?;// 创建Excel文件convert_json_to_excel(&data_items, excel_file_path)?;println!("Excel文件已生成: {}", excel_file_path);Ok(())
}fn convert_json_to_excel(data_items: &[DataItem], output_path: &str) -> Result<(), Box<dyn Error>> {// 创建一个新的工作簿let mut workbook = Workbook::new();// 添加一个工作表let mut sheet = workbook.add_worksheet();// 创建标题格式let header_format = Format::new().set_bold().set_align(rust_xlsxwriter::FormatAlign::Center).set_border(rust_xlsxwriter::FormatBorder::Thin);// 创建数据格式let mut data_format = Format::new().set_border(rust_xlsxwriter::FormatBorder::Thin).set_align(rust_xlsxwriter::FormatAlign::Left);if data_items.is_empty() {return Err("JSON数组为空".into());}// 获取第一个对象的键值对，保持原始顺序let first_item = &data_items[0];let ordered_keys: Vec<String> = first_item.data.keys().cloned().collect();// 写入表头for (col, key) in ordered_keys.iter().enumerate() {sheet.write_string_with_format(0, col as u16, key,&header_format)?;}// 写入数据for (row, item) in data_items.iter().enumerate() {for (col, key) in ordered_keys.iter().enumerate() {if let Some(value) = item.data.get(key) {let cell_value = match value {Value::Null => "null".to_string(),Value::Bool(b) => b.to_string(),Value::Number(n) => n.to_string(),Value::String(s) => s.clone(),Value::Array(a) => serde_json::to_string(a).unwrap_or_else(|_| "[]".to_string()),Value::Object(o) => serde_json::to_string(o).unwrap_or_else(|_| "{}".to_string()),};sheet.write_string_with_format((row + 1) as u16 as RowNum, col as u16, &cell_value,&data_format)?;}}}// 调整列宽for col in 0..ordered_keys.len() {sheet.set_column_width(col as u16, 20)?;}// 保存工作簿workbook.save(output_path)?;Ok(())
}

二、json 示例 

 [
  {
    "id": 1,
    "name": "张三",
    "age": 28,
    "email": "[e-mail]"
  },
  {
    "id": 2,
    "name": "李四",
    "age": 34,
    "email": "[e-mail]"
  },
  {
    "id": 3,
    "name": "王五",
    "age": 22,
    "email": "[e-mail]"
  },
  {
    "id": 4,
    "name": "赵六",
    "age": 45,
    "email": "[e-mail]"
  },
  {
    "id": 5,
    "name": "孙七",
    "age": 31,
    "email": "[e-mail]"
  }
]