typeorm自定义表名，列名，大写别下划线，不用手动指定名称

import { DefaultNamingStrategy, NamingStrategyInterface, Table } from "typeorm";


export class MyNamingStrategy extends DefaultNamingStrategy {
    tableName(targetName: string, userSpecifiedName: string | undefined): string {
        if (userSpecifiedName) return userSpecifiedName;

        return parseName(targetName);
    }
    columnName(propertyName: string, customName: string, embeddedPrefixes: string[]): string {
        if (customName) return customName;
        return parseName(propertyName);
    }
}

function parseName(targetName: string): string {
    if(!targetName) return "";
    let str : string = "";
    for(let i = 0; i < targetName.length; ++i) {
        let code = targetName[i];
        if (code >= "A" && code <= "Z") {
            if(i != 0 ) {
                str = str.concat("_");
            }
            str = str.concat(code.toLocaleLowerCase());
        }else {
            str = str.concat(code);
        }
    }
    return str;
}

import { MyNamingStrategy } from "./conf/MyNamingStrategy";

getConnectionOptions().then((connectionOptions) => {
    return createConnection(Object.assign(connectionOptions, {
        namingStrategy: new MyNamingStrategy()
    }))
}).catch(err => console.error(err));