使用Node JS在Node JS上进行HTTP请求回调 [英] HTTP request callback on Node JS with Node JS
本文介绍了使用Node JS在Node JS上进行HTTP请求回调的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试使用回调方法通过http获得响应.但是我得到了很多信息，但没有得到我的数据:
Hi I am trying to get a response via a http using the callback method. But I get a lot of information but not my data :
Request {
domain: null,
_events:
{ error: [Function: bound ],
complete: [Function: bound ],
pipe: [Function] },
_eventsCount: 3,
_maxListeners: undefined,
uri:
Url {
protocol: 'http:',
slashes: true,
auth: null,
host: 'localhost',
port: 80,
hostname: 'localhost',
hash: null,
search: '?filter=route_short_name',
query: 'filter=route_short_name',
pathname: '/php-rest/api.php/routes',
path: '/php-rest/api.php/routes?filter=route_short_name',
href: 'http://localhost/php-rest/api.php/routes?filter=route_short_name' },
callback: [Function],
readable: true,
writable: true,
_qs:
Querystring {
request: [Circular],
lib: { formats: [Object], parse: [Function], stringify: [Function] },
useQuerystring: undefined,
parseOptions: {},
stringifyOptions: {} },
_auth:
Auth {
request: [Circular],
hasAuth: false,
sentAuth: false,
bearerToken: null,
user: null,
pass: null },
_oauth: OAuth { request: [Circular], params: null },
_multipart:
Multipart {
request: [Circular],
boundary: '9ab5d31f-9896-4fb9-8f89-47e5501e9342',
chunked: false,
body: null },
_redirect:
Redirect {
request: [Circular],
followRedirect: true,
followRedirects: true,
followAllRedirects: false,
followOriginalHttpMethod: false,
allowRedirect: [Function],
maxRedirects: 10,
redirects: [],
redirectsFollowed: 0,
removeRefererHeader: false },
_tunnel:
Tunnel {
request: [Circular],
proxyHeaderWhiteList:
[ 'accept',
'accept-charset',
'accept-encoding',
'accept-language',
'accept-ranges',
'cache-control',
'content-encoding',
'content-language',
'content-location',
'content-md5',
'content-range',
'content-type',
'connection',
'date',
'expect',
'max-forwards',
'pragma',
'referer',
'te',
'user-agent',
'via' ],
proxyHeaderExclusiveList: [] },
headers: { host: 'localhost' },
setHeader: [Function],
hasHeader: [Function],
getHeader: [Function],
removeHeader: [Function],
method: 'GET',
localAddress: undefined,
pool: {},
dests: [],
__isRequestRequest: true,
_callback: [Function],
proxy: null,
tunnel: false,
setHost: true,
originalCookieHeader: undefined,
_disableCookies: true,
_jar: undefined,
port: 80,
host: 'localhost',
path: '/php-rest/api.php/routes?filter=route_short_name',
httpModule:
{ IncomingMessage: { [Function: IncomingMessage] super_: [Object] },
METHODS:
[ 'ACL',
'BIND',
'CHECKOUT',
'CONNECT',
'COPY',
'DELETE',
'GET',
'HEAD',
'LINK',
'LOCK',
'M-SEARCH',
'MERGE',
'MKACTIVITY',
'MKCALENDAR',
'MKCOL',
'MOVE',
'NOTIFY',
'OPTIONS',
'PATCH',
'POST',
'PROPFIND',
'PROPPATCH',
'PURGE',
'PUT',
'REBIND',
'REPORT',
'SEARCH',
'SUBSCRIBE',
'TRACE',
'UNBIND',
'UNLINK',
'UNLOCK',
'UNSUBSCRIBE' ],
OutgoingMessage: { [Function: OutgoingMessage] super_: [Object] },
ServerResponse: { [Function: ServerResponse] super_: [Object] },
STATUS_CODES:
{ '100': 'Continue',
'101': 'Switching Protocols',
'102': 'Processing',
'200': 'OK',
'201': 'Created',
'202': 'Accepted',
'203': 'Non-Authoritative Information',
'204': 'No Content',
'205': 'Reset Content',
'206': 'Partial Content',
'207': 'Multi-Status',
'208': 'Already Reported',
'226': 'IM Used',
'300': 'Multiple Choices',
'301': 'Moved Permanently',
'302': 'Found',
'303': 'See Other',
'304': 'Not Modified',
'305': 'Use Proxy',
'307': 'Temporary Redirect',
'308': 'Permanent Redirect',
'400': 'Bad Request',
'401': 'Unauthorized',
'402': 'Payment Required',
'403': 'Forbidden',
'404': 'Not Found',
'405': 'Method Not Allowed',
'406': 'Not Acceptable',
'407': 'Proxy Authentication Required',
'408': 'Request Timeout',
'409': 'Conflict',
'410': 'Gone',
'411': 'Length Required',
'412': 'Precondition Failed',
'413': 'Payload Too Large',
'414': 'URI Too Long',
'415': 'Unsupported Media Type',
'416': 'Range Not Satisfiable',
'417': 'Expectation Failed',
'418': 'I\'m a teapot',
'421': 'Misdirected Request',
'422': 'Unprocessable Entity',
'423': 'Locked',
'424': 'Failed Dependency',
'425': 'Unordered Collection',
'426': 'Upgrade Required',
'428': 'Precondition Required',
'429': 'Too Many Requests',
'431': 'Request Header Fields Too Large',
'451': 'Unavailable For Legal Reasons',
'500': 'Internal Server Error',
'501': 'Not Implemented',
'502': 'Bad Gateway',
'503': 'Service Unavailable',
'504': 'Gateway Timeout',
'505': 'HTTP Version Not Supported',
'506': 'Variant Also Negotiates',
'507': 'Insufficient Storage',
'508': 'Loop Detected',
'509': 'Bandwidth Limit Exceeded',
'510': 'Not Extended',
'511': 'Network Authentication Required' },
Agent: { [Function: Agent] super_: [Object], defaultMaxSockets: Infinity },
globalAgent:
Agent {
domain: null,
_events: [Object],
_eventsCount: 1,
_maxListeners: undefined,
defaultPort: 80,
protocol: 'http:',
options: [Object],
requests: {},
sockets: {},
freeSockets: {},
keepAliveMsecs: 1000,
keepAlive: false,
maxSockets: Infinity,
maxFreeSockets: 256 },
ClientRequest: { [Function: ClientRequest] super_: [Object] },
request: [Function],
get: [Function],
_connectionListener: [Function: connectionListener],
Server: { [Function: Server] super_: [Object] },
createServer: [Function],
Client: [Function: deprecated],
createClient: [Function: deprecated] },
agentClass:
{ [Function: Agent]
super_:
{ [Function: EventEmitter]
EventEmitter: [Circular],
usingDomains: false,
defaultMaxListeners: [Getter/Setter],
init: [Function],
listenerCount: [Function] },
defaultMaxSockets: Infinity },
agent:
Agent {
domain: null,
_events: { free: [Function] },
_eventsCount: 1,
_maxListeners: undefined,
defaultPort: 80,
protocol: 'http:',
options: { path: null },
requests: {},
sockets: {},
freeSockets: {},
keepAliveMsecs: 1000,
keepAlive: false,
maxSockets: Infinity,
maxFreeSockets: 256 } }
我的Node JS代码是:
My Node JS code is :
var http = require('http');
function getRoutes(callback){
var callback = request('http://localhost/php-rest/api.php/routes?filter=route_short_name', function(error, response, body, callback) {
if (!error && response.statusCode == 200) {
result = JSON.stringify(JSON.parse(body));
//console.log(result);
//res.setHeader('Content-Type', 'application/json');
//res.send(result);
return callback = result;
} else {
//res.end('Error: ' + error);
return callback = error;
}
});
return callback;
}
app.get('/getRoutes', function(req, res) {
var data = getRoutes();
console.log(data);
//res.setHeader('Content-Type', 'application/json');
res.send(data);
});
我想要回调(结果或错误的内容). 如果有人可以帮助我，将不胜感激.
I want the callback (content of result or error). If anyone can help me on this it would be greatly appreciated.
推荐答案
这是您应该使用回调编写函数的方式. request模块没有回调参数，请参见此处.
This is how you should write your function using callback. request module doesn't have a callback param, see here.
var http = require('http');
function getRoutes(callback){
request('http://localhost/php-rest/api.php/routes?filter=route_short_name', function(error, response, body) {
if (!error && response.statusCode == 200) {
result = JSON.stringify(JSON.parse(body));
return callback(result, false);
} else {
return callback(null, error);;
}
});
}
app.get('/getRoutes', function(req, res) {
getRoutes(function(err, data){
if(err) return res.send(err);
res.send(data);
});
});
这篇关于使用Node JS在Node JS上进行HTTP请求回调的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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