我刚开始使用mssql包从NodeJS查询我的数据库。我的问题是关于错误处理...对于初学者，这是我的模块导入：
if (Auth::attempt(['username' => $request->username, 'password' => $request->password])) {
return redirect()->route('home');
} else {
session()->flash('errormessage','Invalid password.');
return redirect()->back();
}
我可以看到模块公开的大多数方法都可以作为Promise处理，const sql = require('mssql');
const config = require('./pathToMyConfig.js');
可以用来处理错误。
.catch()但是我也可以在文档中看到他们有时会在导入的mssql模块上调用sql.connect(config).query("SELECT * FROM Customers").then().catch(err => {...});
。
.on('error') 2之间的区别是什么？我想sql.connect(config).query().then();
sql.on('error', err => {...});
只处理该Promise主体上的错误，而.catch处理未捕获的所有内容？
是否存在其他差异，或者可能是关于此的约定？
答案 0 :(得分：2)
{
"Event": {
"id": "13",
"orgc_id": "1",
"org_id": "1",
"date": "2019-01-09",
"threat_level_id": "3",
"info": "test9",
"published": false,
"uuid": "5c35d180",
"attribute_count": "2",
"analysis": "0",
"timestamp": "1547044733",
"distribution": "1",
"proposal_email_lock": false,
"locked": false,
"publish_timestamp": "1547034089",
"sharing_group_id": "0",
"disable_correlation": false,
"extends_uuid": "",
"event_creator_email": "o@cyhgfnt.com",
"Org": {
"id": "1",
"name": "Cygfdgfdnt",
"uuid": "5b9f938d-e3a0-4ecb-83b3-0bdeac1b41bc"
},
"Orgc": {
"id": "1",
"name": "Cyhgfgft",
"uuid": "5b9f938d-e3a0-4ecb-83b3-0bdeac1b41bc"
},
"Attribute": [{
"id": "292630",
"type": "domain",
"category": "Network activity",
"to_ids": true,
"uuid": "5c35dd94-cccc-4086-b386-682823717aa5",
"event_id": "1357",
"distribution": "5",
"timestamp": "1547034584",
"comment": "This is a comment",
"sharing_group_id": "0",
"deleted": false,
"disable_correlation": false,
"object_id": "0",
"object_relation": null,
"value": "dodskj.com",
"Galaxy": [],
"ShadowAttribute": [],
"Tag": [{
"id": "223",
"name": "kill-chain:Exploitation",
"colour": "#a80079",
"exportable": true,
"user_id": "0",
"hide_tag": false,
"numerical_value": null
}]
}, {
"id": "292631",
"type": "ip-dst",
"category": "Network activity",
"to_ids": true,
"uuid": "5c35dd94-fe90-4ef6-b3a9-682823717aa5",
"event_id": "1357",
"distribution": "5",
"timestamp": "1547044733",
"comment": "comment example",
"sharing_group_id": "0",
"deleted": false,
"disable_correlation": false,
"object_id": "0",
"object_relation": null,
"value": "8.8.6.6",
"Galaxy": [],
"ShadowAttribute": [],
"Tag": [{
"id": "247",
"name": "maec-malware-capabilities:maec-malware-capability=\"anti-removal\"",
"colour": "#3f0004",
"exportable": true,
"user_id": "0",
"hide_tag": false,
"numerical_value": null
}, {
"id": "465",
"name": "osint:lifetime=\"perpetual\"",
"colour": "#006ebe",
"exportable": true,
"user_id": "0",
"hide_tag": false,
"numerical_value": null
}]
}],
"ShadowAttribute": [],
"RelatedEvent": [],
"Galaxy": [{
"id": "3",
"uuid": "698774c7-8022-42c4-917f-8d6e4f06ada3",
"name": "Threat Actor",
"type": "threat-actor",
"description": "Threat actors are characteristics of malicious actors (or adversaries) representing a cyber attack threat including presumed intent and historically observed behaviour.",
"version": "3",
"icon": "user-secret",
"namespace": "misp",
"GalaxyCluster": [{
"id": "6397",
"collection_uuid": "7cdff317-a673-4474-84ec-4f1754947823",
"type": "threat-actor",
"value": "Sofacy",
"tag_name": "misp-galaxy:threat-actor=\"Sofacy\"",
"description": "The Sofacy Group (also known as APT28, Pawn Storm, Fancy Bear and Sednit) is a cyber espionage group believed to have ties to the Russian government. Likely operating since 2007, the group is known to target government, military, and security organizations. It has been characterized as an advanced persistent threat.",
"galaxy_id": "3",
"source": "MISP Project",
"authors": ["Alexandre Dulaunoy", "Florian Roth", "Thomas Schreck", "Timo Steffens", "Various"],
"version": "82",
"uuid": "5b4ee3ea-eee3-4c8e-8323-85ae32658754",
"tag_id": "608",
"meta": {
"cfr-suspected-state-sponsor": ["Russian Federation"],
"cfr-suspected-victims": ["Georgia", "France", "Jordan", "United States", "Hungary", "World Anti-Doping Agency", "Armenia", "Tajikistan", "Japan", "NATO", "Ukraine", "Belgium", "Pakistan", "Asia Pacific Economic Cooperation", "International Association of Athletics Federations", "Turkey", "Mongolia", "OSCE", "United Kingdom", "Germany", "Poland", "European Commission", "Afghanistan", "Kazakhstan", "China"],
"cfr-target-category": ["Government", "Military"],
"cfr-type-of-incident": ["Espionage"],
"country": ["RU"],
"refs": ["https:\/\/en.wikipedia.org\/wiki\/Sofacy_Group", "https:\/\/aptnotes.malwareconfig.com\/web\/viewer.html?file=..\/APTnotes\/2014\/apt28.pdf", "http:\/\/www.trendmicro.com\/cloud-content\/us\/pdfs\/security-intelligence\/white-papers\/wp-operation-pawn-storm.pdf", "https:\/\/www2.fireeye.com\/rs\/848-DID-242\/images\/wp-mandiant-matryoshka-mining.pdf", "https:\/\/www.crowdstrike.com\/blog\/bears-midst-intrusion-democratic-national-committee\/", "http:\/\/researchcenter.paloaltonetworks.com\/2016\/06\/unit42-new-sofacy-attacks-against-us-government-agency\/", "https:\/\/www.cfr.org\/interactive\/cyber-operations\/apt-28", "https:\/\/blogs.microsoft.com\/on-the-issues\/2018\/08\/20\/we-are-taking-new-steps-against-broadening-threats-to-democracy\/", "https:\/\/www.bleepingcomputer.com\/news\/security\/microsoft-disrupts-apt28-hacking-campaign-aimed-at-us-midterm-elections\/", "https:\/\/www.bleepingcomputer.com\/news\/security\/apt28-uses-lojax-first-uefi-rootkit-seen-in-the-wild\/"],
"synonyms": ["APT 28", "APT28", "Pawn Storm", "PawnStorm", "Fancy Bear", "Sednit", "TsarTeam", "Tsar Team", "TG-4127", "Group-4127", "STRONTIUM", "TAG_0700", "Swallowtail", "IRON TWILIGHT", "Group 74"]
}
}]
}],
"Object": [],
"Tag": [{
"id": "608",
"name": "misp-galaxy:threat-actor=\"Sofacy\"",
"colour": "#12e000",
"exportable": true,
"user_id": "0",
"hide_tag": false,
"numerical_value": null
}, {
"id": "118",
"name": "gdpr:special-categories=\"health\"",
"colour": "#3ce600",
"exportable": true,
"user_id": "0",
"hide_tag": false,
"numerical_value": null
}]
}
}
。这使您可以在初始化期间处理任何异常。
.catch（err => {...}）用于捕获执行查询期间发生的任何错误。