Add example for excel to json with mapper from file and add docker support
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# Examples
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- Say Hello to Docker with Nodejs
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- Say Hello to Docker with Nodejs
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- Excel file transform to json with Nodejs
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examples/excel2json/.gitignore
vendored
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examples/excel2json/.gitignore
vendored
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node_modules/
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yarn.lock
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package-lock.json
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yarn-error*
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outputs/
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examples/excel2json/Dockerfile
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examples/excel2json/Dockerfile
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FROM cubetiq/calpine-node:latest
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LABEL maintainer="sombochea@cubetiqs.com"
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ENV INPUT_FILE './data/people.xlsx'
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ENV OUTPUT_PATH './data/outputs'
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ENV MAPPER_FILE './data/mapper.json'
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WORKDIR /usr/src/app
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COPY . /usr/src/app
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RUN yarn
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CMD [ "node" , "index.js"]
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examples/excel2json/Makefile
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examples/excel2json/Makefile
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DOCKER_IMAGE=cubetiq/node-excel2json
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build:
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@echo "Building docker image..."
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docker build . -t ${DOCKER_IMAGE}
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run:
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@echo "Running container..."
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docker run --rm -t ${DOCKER_IMAGE}
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.PHONY: build
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examples/excel2json/data/mapper.json
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examples/excel2json/data/mapper.json
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{
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"data": [
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{
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"dataIndex": "Name",
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"label": "Name"
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},
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{
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"dataIndex": "Age",
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"label": "Age"
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}
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],
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"configs": {}
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}
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BIN
examples/excel2json/data/people.xlsx
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BIN
examples/excel2json/data/people.xlsx
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Binary file not shown.
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examples/excel2json/index.js
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examples/excel2json/index.js
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const XLSX = require("xlsx");
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const fs = require("fs");
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const NAME = process.env.APP_NAME || "excel2json";
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console.log("App Name =>", NAME);
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// load from env
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const INPUT_FILE = process.env.INPUT_FILE || "./data/people.xlsx";
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const OUTPUT_PATH = process.env.OUTPUT_PATH || "./data/outputs";
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const MAPPER_FILE = process.env.MAPPER_FILE || "./data/mapper.json";
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// get mapper in string
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const mapperString = fs.readFileSync(
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MAPPER_FILE,
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{ encoding: "utf-8" },
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(err) => {
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if (err) throw err;
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console.log("Load file suceed =>", MAPPER_FILE);
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}
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);
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// convert mapper from string to json object
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const mapperJson = JSON.parse(mapperString);
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const columsData = mapperJson.data;
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// read workbook from excel file
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const wb = XLSX.readFile(INPUT_FILE);
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const xlData = XLSX.utils.sheet_to_json(wb.Sheets["Sheet1"]);
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// mapping the data from read excel file
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const data = xlData.map((row) => {
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var _r = {};
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columsData.map((col) => {
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_r[col.label] = row[col.dataIndex];
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});
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return _r;
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});
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console.log("Data read from excel and mapped\n", data);
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// check directory and create it if not exist
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if (!fs.existsSync(OUTPUT_PATH)) {
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fs.mkdirSync(OUTPUT_PATH);
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}
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// write to file
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fs.writeFile(`${OUTPUT_PATH}/people_${new Date().getTime()}.json`, JSON.stringify(data), (err) => {
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if (err) throw err;
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console.log("Write succeed!");
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});
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examples/excel2json/package.json
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examples/excel2json/package.json
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{
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"name": "excel2json",
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"version": "1.0.0",
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"description": "",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"author": "Sambo Chea <sombochea@cubetiqs.com>",
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"license": "MIT",
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"dependencies": {
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"xlsx": "^0.16.9"
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}
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}
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