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xlsx-to-json-plus

v1.0.1

Published

让excel表达复杂的json格式,将xlsx文件转成json。

Downloads

14

Readme

Build Status

English Document

简介

让excel表达复杂的json格式,将xlsx文件转成json。

install

$npm install xlsx-to-json-plus

使用

目前只支持.xlsx格式,不支持.xls格式。 example目录可找到完整例子。

var magic = require('xlsx-to-json-plus');

["./example/excel/heroes.xlsx"].forEach(function (element) {

  magic.toJson(
    path.join(__dirname, element),  //excell file
    path.join(__dirname, "./json"), //json dir
    2,  //excell head line number
    "," //array separator
  );

});

示例1 test.xlsx

test.xlsx

输出如下:

[{
    "id": 123,
    "desc": "description",
    "flag": true,
    "otherid": [1, 2],
    "words": ["哈哈", "呵呵"],
    "map": [true, true],
    "data": {
        "a": 123,
        "b": 45
    },
    "hero": [
      {"id": 2,"level": 30},
      {"id": 3,"level": 80}
    ]
}, {
    "id": 456,
    "desc": "描述",
    "flag": false,
    "otherid": [3, 5, 8],
    "words": ["shit", "my god"],
    "map": [false, true],
    "data": {
        "a": 11,
        "b": 22
    },
    "hero": [
      {"id": 9, "level": 38 },
      {"id": 17,"level": 100}
    ]
}]

支持以下数据类型

  • number 数字类型
  • boolean 布尔
  • string 字符串
  • date 日期类型
  • object 对象,复杂的嵌套可以通过外键来实现,见“外键类型的sheet关联”
  • number-array 数字数组
  • boolean-array 布尔数组
  • string-array 字符串数组
  • object-array 对象数组,复杂的嵌套可以通过外键来实现,见“外键类型的sheet关联”

excel表头规则

  • 基本数据类型(string,number,bool)时候,一般不需要设置会自动判断,但是也可以明确声明数据类型。
  • 字符串类型:此列表头的命名形式 列名#string
  • 数字类型:此列表头的命名形式 列名#number
  • 日期类型:列名#date 。格式YYYY/M/D H:m:s or YYYY/M/D or YYYY-M-D H:m:s or YYYY-M-D。(==注意:目前xlsx文件里面列必须设置为文本类型,如果是日期类型的话,会导致底层插件解析出来错误格式的时间==).
  • 布尔类型:此列表头的命名形式 列名#bool
  • 基本类型数组:此列表头的命名形式 列名#[]
  • 对象:此列表头的命名形式 列名#{}
  • 对象数组:此列表头的命名形式列名#[{}]
  • id:此列表头的命名形式列名#id,用来生成对象格式的输出,以该列字段作为key,一个sheet中不能存在多个id类型的列,否则会被覆盖,相关用例请查看test/heroes.xlsx
  • id[]:此列表头的命名形式列名#id[],用来约束输出的值为对象数组,相关用例请查看test/stages.xlsx

数据规则

  • 关键符号都是半角符号。
  • 数组使用逗号,分割。
  • 对象属性使用分号;分割。
  • 列格式如果是日期,导出来的是格林尼治时间不是当时时区的时间,列设置成字符串可解决此问题。

外键类型的sheet关联

  • sheet名称必须为【列名@sheet名称】,例如存在一个名称为a的sheet,会导出一个a.json,可以使用一个名称为b@a的sheet为这个json添加一个b的属性
  • 外键类型的sheet(sub sheet)顺序上必须位于被关联的sheet(master sheet)之后
  • master sheet的输出类型如果为对象,则sub sheet必须也存在master sheet同列名并且类型为id的列作为关联关系;master sheet的输出类型如果为数组,则sub sheet按照数组下标(行数)顺序关联
  • 相关用例请查看test/heroes.xlsx

原理说明

  • 依赖 node-xlsx 这个项目解析xlsx文件。
  • xlsx就是个zip文件,解压出来都是xml。有一个xml存的string,有相应个xml存的sheet。通过解析xml解析出excel数据(json格式),这个就是node-xlsx 做的工作。
  • 本项目只需利用 node-xlsx 解析xlsx文件,然后拼装自己的json数据格式。

补充