用js将geojson转换成WKT格式并插入到数据库

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用js将geojson转换成WKT格式并插入到数据库

var fs = require("fs");
var mysql = require("mysql");
var Geojson2wkt = require("Geojson2Wkt");var connection = mysql.createConnection({host: "172.16.2.252",port: 3316,user: "root",password: "Wang4995",database: "point"
});connection.connect();// 定义表名
var tableName = "zy_plant"; // 替换为你想要的表名// Read JSON file
fs.readFile("./zy20240110.json", { encoding: "utf-8" }, (err, data) => {if (err) {console.error(err);return;}let jsonobj = JSON.parse(data);var features = jsonobj.features;// Extract properties from the first featurevar properties = features[0].properties;// Create table SQL statementvar createTableSQL = "CREATE TABLE IF NOT EXISTS " + tableName + " (id INT AUTO_INCREMENT PRIMARY KEY, ";// Iterate through properties and add columns to the SQL statementfor (var key in properties) {if (properties.hasOwnProperty(key)) {createTableSQL += key + " VARCHAR(255), ";}}createTableSQL += "geom GEOMETRY);";// Execute create table SQL statementconnection.query(createTableSQL, (err, results) => {if (err) {console.error(err);return;}console.log("Table " + tableName + " created or already exists.");var insertedCount = 0;// Iterate through features and insert data into the tablefor (var i = 0; i < features.length; i++) {var feature = features[i];var insertData = [];var insertedFields = [];// Iterate through properties and add values to insertDatafor (var key in properties) {if (feature.properties.hasOwnProperty(key)) {insertData.push("'" + feature.properties[key] + "'");insertedFields.push(key);}}// Add geometry datavar geometryWKT = Geojson2wkt.convert(feature.geometry);insertData.push("ST_GeomFromText('" + geometryWKT + "')");insertedFields.push("geom");// Construct insert SQL statementvar insertSQL = "INSERT INTO " + tableName + " (" + insertedFields.join(", ") + ") VALUES (" + insertData.join(", ") + ")";// Execute insert SQL statementconnection.query(insertSQL, (err, results) => {if (err) {console.error(err);} else {insertedCount++;console.log(`Inserted data for fields: ${insertedFields.join(", ")}`);console.log(`Total inserted records: ${insertedCount}`);}});}// Close database connectionconnection.end();});
});
``