var express = require('express');
var app = express();
var os = require('os');
var http = require('http');
app.get('/', function(req, res){
var ip = req.headers["X-Forwarded-For"] || req.connection.remoteAddress;
var uIP = ip.match(/\d+\.\d+\.\d+\.\d+/);
httpQQMap(uIP,function(info){
res.send(info);
})
});
function httpQQMap(ip,call){
http.get("http://apis.map.qq.com/ws/location/v1/ip?ip="+ ip +"&key="+ qqqkey +"", function(ress) {
call(ress.text);
}).on('error', function(e) {
call(e.message);
});
}页面输出空白，发起get请求 回调处理 如何将回调的数据返回到页面呢
控制台 network
ress.text 打印出的 是 undefined
ress 输出
headers:
{ server: 'HTTP Load Balancer/1.0',
date: 'Wed, 16 Dec 2015 04:55:40 GMT',
'content-type': 'application/json; charset=utf-8',
'content-length': '64',
connection: 'close',
'set-cookie': [ 'mpuv=CuGrLlZw7sy3OTLYDb0WAg==; expires=Thu, 15-Dec-16 04:5
:40 GMT; domain=map.qq.com; path=/' ] },
rawHeaders:
[ 'Server',
'HTTP Load Balancer/1.0',
'Date',
'Wed, 16 Dec 2015 04:55:40 GMT',
'Content-Type',
'application/json; charset=utf-8',
'Content-Length',
'64',
'Connection',
'close',
'Set-Cookie',
'mpuv=CuGrLlZw7sy3OTLYDb0WAg==; expires=Thu, 15-Dec-16 04:55:40 GMT; domain
map.qq.com; path=/' ],
trailers: {},
rawTrailers: [],
upgrade: false,
url: '',
method: null,
statusCode: 200,
statusMessage: 'OK',
client:
Socket {
_connecting: false,
_hadError: false,
_handle:
TCP {
_externalStream: {},
fd: -1,
reading: true,
owner: [Circular],
onread: [Function: onread],
onconnection: null,
writeQueueSize: 0 },
_parent: null,
_host: 'apis.map.qq.com',
_readableState:
ReadableState {
objectMode: false,
highWaterMark: 16384,
buffer: [],
length: 0,
pipes: null,
pipesCount: 0,
flowing: true,
ended: false,
endEmitted: false,
reading: false,
sync: false,
needReadable: true,
emittedReadable: false,
readableListening: false,
defaultEncoding: 'utf8',
ranOut: false,
awaitDrain: 0,
readingMore: false,
decoder: null,
encoding: null,
resumeScheduled: false },
readable: true,
domain: null,
_events:
{ end: [Object],
finish: [Function: onSocketFinish],
_socketEnd: [Function: onSocketEnd],
free: [Function: onFree],
close: [Object],
agentRemove: [Function: onRemove],
drain: [Function: ondrain],
error: [Function: socketErrorListener],
data: [Function: socketOnData] },
_eventsCount: 9,
_maxListeners: undefined,
_writableState:
WritableState {
objectMode: false,
highWaterMark: 16384,
needDrain: false,
ending: false,
ended: false,
finished: false,
decodeStrings: false,
defaultEncoding: 'utf8',
length: 0,
writing: false,
corked: 0,
sync: false,
bufferProcessing: false,
onwrite: [Function],
writecb: null,
writelen: 0,
bufferedRequest: null,
lastBufferedRequest: null,
pendingcb: 0,
prefinished: false,
errorEmitted: false },
writable: true,
allowHalfOpen: false,
destroyed: false,
bytesRead: 345,
_bytesDispatched: 134,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
parser:
HTTPParser {
'0': [Function: parserOnHeaders],
'1': [Function: parserOnHeadersComplete],
'2': [Function: parserOnBody],
'3': [Function: parserOnMessageComplete],
_headers: [],
_url: '',
socket: [Circular],
incoming: [Circular],
maxHeaderPairs: 2000,
onIncoming: [Function: parserOnIncomingClient] },
_httpMessage:
ClientRequest {
domain: null,
_events: [Object],
_eventsCount: 1,
_maxListeners: undefined,
output: [],
outputEncodings: [],
outputCallbacks: [],
outputSize: 134,
writable: true,
_last: true,
chunkedEncoding: false,
shouldKeepAlive: false,
useChunkedEncodingByDefault: false,
sendDate: false,
_removedHeader: {},
_contentLength: 0,
_hasBody: true,
_trailer: '',
finished: true,
_headerSent: true,
socket: [Circular],
connection: [Circular],
_header: 'GET /ws/location/v1/ip?ip=27.115.98.238&key=OB4BZ-D4W3U-B7VVO-
PJWW-6TKDJ-WPB77 HTTP/1.1\r\nHost: apis.map.qq.com\r\nConnection: close\r\n\r\n
,
_headers: [Object],
_headerNames: [Object],
_onPendingData: null,
agent: [Object],
socketPath: undefined,
method: 'GET',
path: '/ws/location/v1/ip?ip=27.115.98.238&key=OB4BZ-D4W3U-B7VVO-4PJWW-6
KDJ-WPB77',
parser: [Object],
res: [Circular] },
read: [Function],
_consuming: true },
_consuming: false,
_dumped: false,
req:
ClientRequest {
domain: null,
_events: { error: [Function] },
_eventsCount: 1,
_maxListeners: undefined,
output: [],
outputEncodings: [],
outputCallbacks: [],
outputSize: 134,
writable: true,
_last: true,
chunkedEncoding: false,
shouldKeepAlive: false,
useChunkedEncodingByDefault: false,
sendDate: false,
_removedHeader: {},
_contentLength: 0,
_hasBody: true,
_trailer: '',
finished: true,
_headerSent: true,
socket:
Socket {
_connecting: false,
_hadError: false,
_handle: [Object],
_parent: null,
_host: 'apis.map.qq.com',
_readableState: [Object],
readable: true,
domain: null,
_events: [Object],
_eventsCount: 9,
_maxListeners: undefined,
_writableState: [Object],
writable: true,
allowHalfOpen: false,
destroyed: false,
bytesRead: 345,
_bytesDispatched: 134,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
parser: [Object],
_httpMessage: [Circular],
read: [Function],
_consuming: true },
connection:
Socket {
_connecting: false,
_hadError: false,
_handle: [Object],
_parent: null,
_host: 'apis.map.qq.com',
_readableState: [Object],
readable: true,
domain: null,
_events: [Object],
_eventsCount: 9,
_maxListeners: undefined,
_writableState: [Object],
writable: true,
allowHalfOpen: false,
destroyed: false,
bytesRead: 345,
_bytesDispatched: 134,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
parser: [Object],
_httpMessage: [Circular],
read: [Function],
_consuming: true },
_header: 'GET /ws/location/v1/ip?ip=27.115.98.238&key=OB4BZ-D4W3U-B7VVO-4PJ
W-6TKDJ-WPB77 HTTP/1.1\r\nHost: apis.map.qq.com\r\nConnection: close\r\n\r\n',
_headers: { host: 'apis.map.qq.com' },
_headerNames: { host: 'Host' },
_onPendingData: null,
agent:
Agent {
domain: null,
_events: [Object],
_eventsCount: 1,
_maxListeners: undefined,
defaultPort: 80,
protocol: 'http:',
options: [Object],
requests: {},
sockets: [Object],
freeSockets: {},
keepAliveMsecs: 1000,
keepAlive: false,
maxSockets: Infinity,
maxFreeSockets: 256 },
socketPath: undefined,
method: 'GET',
path: '/ws/location/v1/ip?ip=27.115.98.238&key=OB4BZ-D4W3U-B7VVO-4PJWW-6TKD
-WPB77',
parser:
HTTPParser {
'0': [Function: parserOnHeaders],
'1': [Function: parserOnHeadersComplete],
'2': [Function: parserOnBody],
'3': [Function: parserOnMessageComplete],
_headers: [],
_url: '',
socket: [Object],
incoming: [Circular],
maxHeaderPairs: 2000,
onIncoming: [Function: parserOnIncomingClient] },
res: [Circular] } }
:\zan\www\node\koa\demo\node_modules\express\lib\response.js:242
var body = JSON.stringify(val, replacer, spaces);
^
ypeError: Converting circular structure to JSON
at Object.stringify (native)
at ServerResponse.json (E:\zan\www\node\koa\demo\node_modules\express\lib\re
ponse.js:242:19)
at ServerResponse.send (E:\zan\www\node\koa\demo\node_modules\express\lib\re
ponse.js:151:21)
at ClientRequest.<anonymous> (E:\zan\www\node\koa\demo\index.js:36:9)
at ClientRequest.g (events.js:260:16)
at emitOne (events.js:77:13)
at ClientRequest.emit (events.js:169:7)
at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:415:21
at HTTPParser.parserOnHeadersComplete (_http_common.js:88:23)
at Socket.socketOnData (_http_client.js:305:20)
把控制台的network贴出来？打印ress看看？