Node.js undefined：1
我在执行node.js脚本时遇到以下错误，我尝试通过添加console.log（）来追踪错误，但找不到任何解决scheme。 [注：我也search了其他的Stackoverflow解决scheme，但没有帮助]
undefined:1 {"ydht":{"status":{"code":200,"message":"OK"},"records":[ ^ SyntaxError: Unexpected end of input at Object.parse (native) at IncomingMessage.<anonymous> (/tmp/subs_20140130/inc/getData.js:36:24) at IncomingMessage.EventEmitter.emit (events.js:95:17) at IncomingMessage.<anonymous> (_stream_readable.js:745:14) at IncomingMessage.EventEmitter.emit (events.js:92:17) at emitReadable_ (_stream_readable.js:407:10) at emitReadable (_stream_readable.js:403:5) at readableAddChunk (_stream_readable.js:165:9) at IncomingMessage.Readable.push (_stream_readable.js:127:10) at HTTPParser.parserOnBody [as onBody] (http.js:142:22) 这是我的代码：
var options = { host: '<my host>', port: 3128, path: 'http://<some host>:4080'+searchQuery, method: 'GET', headers: { 'App-Auth': cert } }; var req = http.request(options, function(res) { res.setEncoding('utf8'); //DEBUG for ( var k in options) { console.log("[LOGGING] options :" + k + " = " + options[k]);} //DEBUG res.on('data', function (resData) { var resObj = ""; resObj = JSON.parse(resData); console.log("[LOGGING] Response:: "+resObj); if(resObj.ydht.status.code === 200 && resObj.ydht.records[0].key.length > 0) { console.log("[LOGGING] Email "+em+" Key "+resObj.ydht.records[0].key); var filePath = basePath + '/setData'; var setd = require(filePath); setd.setMagData(resObj.ydht.records[0].key, ycacert, is_sub); } else { console.log("[LOGGING] Fail to fetch data em "+em+" nl "+nl); } }); res.on('end', function() { console.log("[LOGGING] connection closed"); }); }); req.on('error', function(err) { console.log("[LOGGING] Fail to fetch data em "+em+" nl "+nl); }); req.end();
当我使用curl命令调用api时，我得到了下面的有效的json响应：
{"ydht":{"status":{"code":200,"message":"OK"},"records":[{"metadata":{"seq_id":"intusnw1-14B3579A577-3","modtime":1422531339,"disk_size":99},"key":"201408271148_zy@gmail.com","fields":{"em":{"value":"xyz1408@yahoo.in"},"is_confirm":{"value":""},"nl":{"value":"offerpop1"}}}],"continuation":{"scan_completed":false,"scan_status":200,"uri_path":"/YDHTWebService/V1/ordered_scan/dts.subs_email?order=asc&start_key=a0"}}}
datacallback被称为多个响应的块。 在每个callback函数中，您需要将响应附加到string，然后end ，即parsing它。
var req = http.request(options, function(res) { res.setEncoding('utf8'); var body = ""; res.on('data', function(resData) { body += resData; }); res.on('end', function() { var json = JSON.parse(body); if (json.ydht.status.code === 200 && json.ydht.records[0].key.length > 0) { var filePath = basePath + '/setData'; var setd = require(filePath); setd.setMagData(json.ydht.records[0].key, ycacert, is_sub); } else { console.log("[LOGGING] Fail to fetch data em " + em + " nl " + nl); } }); });
首先感谢Ben的正确的根本原因分析。 我已经尝试了Ben提出的解决scheme，但是由于我的响应数据非常庞大，所以开始给我“套接字挂断”错误。 所以我必须使用node.js请求模块重新devise解决scheme
//Load the request module ( Dont forget to include it in package.json dependency "request": "2.xx") var request = require('request'); request('http://xys.com/api', function (error, response, body) { //Check for error if(error){ return console.log('Error:', error); } //Check for right status code if(response.statusCode !== 200){ return console.log('Invalid Status Code Returned:', response.statusCode); } console.log(body); // Here is the response body });
对我来说，当我得到这个错误：
undefined:1 [
这是因为.json文件保存为：
8位unicode BOM，Win（CRLF）而不是：8位unicode，Win（CRLF）
它需要成为我的更晚！
晚了