我正在研究IO项目，当我尝试在一个功能下进行多个mysql查询时，我遇到了问题。
当匹配胜利计算正在发生时，Mysql选择只是没有发生，并且抛出了失败的胜利者对象的错误。
我试图以多种方式解决这个问题： 1）当我尝试在第一个选择查询结果功能下嵌套第二个选择查询时 - 它确实抛出了Mysql错误
错误：调用quit后无法将Quit排入队列。
2）我试图删除所有conenction.end（），并在计算功能结束时只留下一个。 - ＆GT;结果
调用quit后无法将Query排入队列。
有没有人有任何提示如何调整代码的方式，我可以一个接一个地嵌套查询，我相信我错过了一些细节。
if(data.gameStatus == 'calculation'){
//winner data
mysqlConnect();
connection.query('SELECT * FROM users where username = "'+data.winnerData.username+'"', function(err, result){
if(err){
getDateTimeNow();
console.log(err);
console.log(datetime+' Error occured while calculating game score for'+ data.winnerData.username);
console.log('============================================================');
}
else{
winner = result;
}
});
//loser data
connection.query('SELECT * FROM users where username = "'+data.winnerData.username+'"', function(err, result){
if(err){
getDateTimeNow();
console.log(err);
console.log(datetime+' Error occured while calculating game score for'+ data.loserData.username);
console.log('============================================================');
}
else{
loser = result;
}
});
// rank calculations
var gameTime = data.gameTime;
var winnerPointsBefore = winner[0].points;
var winnerRank = winner[0].rank;
var winnerDefuses = data.winnerData.minesDefused;
var winnerFlags = data.winnerData.fieldsFlagged;
var winnerId = winner[0].id;
var winnerUsername = winner[0].username;
var winnerGamesWon = winner[0].games_won;
var winnerGamesLost = winner[0].games_lost;
var winnerCoins = winner[0].coins;
var timeBonus = 0;
var rankPointAfterModifier = 0;
var loserRank = loser[0].rank;
var loserPointsBefore = loser[0].points;
var loserDefuses = data.losetData.minesDefused;
var loserFlags = data.loserData.fieldsFlagged;
var loserId = loser[0].id;
var loserUsername = loser[0].username;
var loserGamesWon = loser[0].games_won;
var loserGamesLost = loser[0].games_lost;
var loserCoins = loser[0].coins;
if(winnerPointsBefore - loserPointsAfter > 700){
//If pro is facing noob which is 1.5 rank bellow he cannot gain more or less than 15 point
rankPointAfterModifier = 15;
}else{
if(winnerDefuses == 10 && winnerFlags >= winnerDefuses){
//Game won by defusing all mines -> time bonus calculations depending on rank
timeBonus = 70 - 10*winnerRank - gameTime;
if(loserFlags > loserDefuses){
loserFalseFlags = loserFlags - loserDefuses;
opponentPointReduction = 5 * (loserDefuses - loserFalseFlags);
if(opponentPointReduction < 0) {
opponentPointReduction = 0;
}
}else{
opponentPointReduction = 5 * loserDefuses;
}
pointsGained = (winnerDefuses * 5) - opponentPointReduction + timeBonus;
}else{
//Game won by opponent exploding(retard lose scenario)
if(loserFlags > loserDefuses){
loserFalseFlags = loserFlags - loserDefuses;
opponentPointReduction = 5 * (loserDefuses - loserFalseFlags);
if(opponentPointReduction < 0) {
opponentPointReduction = 0;
}
}else{
opponentPointReduction = 5 * loserDefuses;
}
pointsGained = 5 * (winnerDefuses * (winnerFlags / winnerDefuses)) - opponentPointReduction;
}
if(winnerRank != loserRank){
rankPointAfterModifier = -0.2 * (winnerRank-loserRank) * pointsGained;
}
else{
rankPointAfterModifier = pointsGained;
}
}
winnerCoinsEarned = Math.floor(rankPointAfterModifier / 2);
loserCoinsEarned = Math.floor(rankPointAfterModifier / 5);
winnerPointsAfter = winnerPointsBefore + rankPointAfterModifier;
loserPointsAfter = loserPointsBefore - rankPointAfterModifier;
// Register game data in sql
var gameLog = {
winner_id: winnerId,
loser_id: loserId,
winner_name: winnerUsername,
loser_name: loserUsername,
winner_defuses: winnerDefuses,
winner_flagged: winnerFlags,
loser_defuses: loserDefuses,
loser_flagged: loserFlags,
game_time: gameTime,
rank_exchanged: rankPointAfterModifier,
winner_coins_gain: winnerCoinsEarned,
loser_coins_gain: loserCoinsEarned
}
connection.query('INSERT INTO gamelog SET ?', gameLog, function(err, result){
if(err){
getDateTimeNow();
console.log(err);
console.log(datetime+' Error occured while Registering game Log 1337');
console.log('============================================================');
}
getDateTimeNow();
console.log(datetime+ "Game result has been registered: "+result.insertId);
console.log('============================================================');
});
//Register data to game history for player
//winner
winnerGamesWon++;
winnerRankNow = 1;
if(winnerPointsAfter >= 1500){
winnerRankNow = 2;
}
if(winnerPointsAfter >= 1800){
winnerRankNow = 3;
}
if(winnerPointsAfter >= 2100){
winnerRankNow = 4;
}
if(winnerPointsAfter >= 2500){
winnerRankNow = 5;
}
totalWinnerCoins = winnerCoins + winnerCoinsEarned;
connection.query('UPDATE users SET games_won = '+winnerGamesWon+', coins = '+totalWinnerCoins+', points ='+winnerPointsAfter+',rank = '+winnerRankNow+' WHERE id = '+winnerId, function(err, result){
if(err){
getDateTimeNow();
console.log(err);
console.log(datetime+' Error occured while Updating winner rank points 1336');
console.log('============================================================');
}
getDateTimeNow();
console.log(datetime+ "Rank point has been updated for: "+ winnerUsername);
console.log('============================================================');
});
//winner
loserGamesLost++;
loserRankNow = 1;
if(loserPointsAfter >= 1500){
loserRankNow = 2;
}
if(loserPointsAfter >= 1800){
loserRankNow = 3;
}
if(loserPointsAfter >= 2100){
loserRankNow = 4;
}
if(loserPointsAfter >= 2500){
loserRankNow = 5;
}
totalLoserCoins = loserCoins + loserCoinsEarned;
connection.query('UPDATE users SET games_lost = '+loserGamesLost+', coins= '+totalLoserCoins+', points ='+loserPointsAfter+',rank = '+loserRankNow+' WHERE id = '+loserId, function(err, result){
if(err){
getDateTimeNow();
console.log(err);
console.log(datetime+' Error occured while Updating winner rank points 1336');
console.log('============================================================');
}
getDateTimeNow();
console.log(datetime+ "Rank point has been updated for: "+ winnerUsername);
console.log('============================================================');
});
returnData = {
loser : {
username: loserUsername,
rankPointsBefore: loserPointsBefore,
rankPointsAfter: loserPointsAfter,
loserCoinsEarned: loserCoinsEarned
},
winner : {
username: winnerUsername,
rankPointsBefore: winnerPointsBefore,
rankPointsAfter: winnerPointsAfter,
winnerCoinsEarned: winnerCoinsEarned
},
totalRankPoints: winnerPointsBefore + loserPointsBefore
}
}