Node.js 实现查询Mysql结果下划线转驼峰

下划线转驼峰方法

function camelCaseKeys(obj) {
    const result = {};
    for (let key in obj) {
        let newKey = key[0].toLowerCase() + key.slice(1).replace(/_([a-z])/g, function($0,$1){return $1.toUpperCase();});
        result[newKey] = obj[key];
    }
    return result;
}

 转换代码

rows = rows.map(item => camelCaseKeys(item));

完整代码如下： 

const mysql = require('mysql')
const pool = mysql.createPool({
    host: '127.0.0.1',
    user: 'root',
    password: '123456',
    database: 'lzwj_data',
    port: 3306
})

function camelCaseKeys(obj) {
    const result = {};
    for (let key in obj) {
        let newKey = key[0].toLowerCase() + key.slice(1).replace(/_([a-z])/g, function($0,$1){return $1.toUpperCase();});
        result[newKey] = obj[key];
    }
    return result;
}


let query = function( sql, values ) {
  // 返回一个 Promise
  return new Promise(( resolve, reject ) => {
    pool.getConnection(function(err, connection) {
      if (err) {
        reject( err )
      } else {
        connection.query(sql, values, ( err, rows) => {
          if ( err ) {
            reject( err )
          } else {
            rows = rows.map(item => camelCaseKeys(item));
            resolve( rows )
          }
          // 结束会话
          connection.release()
        })
      }
    })
  })
}

module.exports =  query

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