Question

我在Node.js 6.7.0中使用mysql从数据库中获取数据

connection.query('SELECT * FROM table', function(err, results){

    if(err){
        console.log('Error while performing the database query:', err);
        return;
    }else{
        console.log('Query results:', results);
    }

});

当我收到错误时，我正常打开页面（之前有效）：

执行数据库查询时出错：错误：握手不活动超时

服务器没有停止运行，我刷新了页面，一切正常......

之前从未发生过，这是什么意思？

这是我在日志中收到的完整错误：

Error while performing the database query: { Error: Handshake inactivity timeout
    at Handshake.<anonymous> (/Users/johndoe/myproject/node_modules/mysql/lib/protocol/Protocol.js:160:17)
    at emitNone (events.js:86:13)
    at Handshake.emit (events.js:185:7)
    at Handshake._onTimeout (/Users/johndoe/myproject/node_modules/mysql/lib/protocol/sequences/Sequence.js:127:8)
    at tryOnTimeout (timers.js:232:11)
    at Timer.listOnTimeout (timers.js:202:5)
    --------------------
    at Protocol._enqueue (/Users/johndoe/myproject/node_modules/mysql/lib/protocol/Protocol.js:141:48)
    at Protocol.handshake (/Users/johndoe/myproject/node_modules/mysql/lib/protocol/Protocol.js:52:41)
    at PoolConnection.connect (/Users/johndoe/myproject/node_modules/mysql/lib/Connection.js:136:18)
    at Pool.getConnection (/Users/johndoe/myproject/node_modules/mysql/lib/Pool.js:48:16)
    at Pool.query (/Users/johndoe/myproject/node_modules/mysql/lib/Pool.js:200:8)
    at /Users/johndoe/myproject/myscript.js:92:13
    at Layer.handle [as handle_request] (/Users/johndoe/myproject/node_modules/express/lib/router/layer.js:95:5)
    at next (/Users/johndoe/myproject/node_modules/express/lib/router/route.js:131:13)
    at Route.dispatch (/Users/johndoe/myproject/node_modules/express/lib/router/route.js:112:3)
    at Layer.handle [as handle_request] (/Users/johndoe/myproject/node_modules/express/lib/router/layer.js:95:5)
  code: 'PROTOCOL_SEQUENCE_TIMEOUT',
  fatal: true,
  timeout: 10000 }

执行数据库查询时出错：错误：握手不活动超时

0 个答案: