Question

var express = require('express');
var router = express.Router();
var http = require('http');

router.get('*', function(req, res, next) {

    http.get("http://steamcommunity.com/id/reminant/inventory/json/730/2", 
        function (response) {
            response.on('data', function (data) {
                var stringData = data.toString();
                console.log(stringData);
                res.render('index', { "data": stringData });
         });
    }).on('error', function (error) {
        console.log(error);
    });
});

控制台： Error: Can't set headers after they are sent. at ServerResponse.OutgoingMessage.setHeader (_http_outgoing.js:346:11) at ServerResponse.header (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\response.js:718:10) at ServerResponse.contentType (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\response.js:551:15) at ServerResponse.send (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\response.js:138:14) at done (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\response.js:957:10) at Object.exports.renderFile (e:\Users\Documents\Repositories\CSGOTest\node_modules\jade\lib\index.js:374:12) at View.exports.__express [as engine] (e:\Users\Documents\Repositories\CSGOTest\node_modules\jade\lib\index.js:417:11) at View.render (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\view.js:126:8) at tryRender (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\application.js:639:10) at EventEmitter.render (e:\Users\Documents\Repositories\CSGOTest\node_modules\express\lib\application.js:591:3)

Answer 1

你的代码应该这样写：

var buffers = [];
var size = 0;
response.on('data', function (data) {
    buffers.push(data);
    size += data.length;
});
res.render('index', {data: Buffer.concat(buffers, size).toString()});

Answer 2

对字符串进行连接响应并在结束处理程序中调用呈现

var stringData = '';
response.on('data', function(data) {
    stringData += data.toString();
}

response.on('end', function() {
    res.render('index', { "data": stringData });
}

错误：发送后无法设置标头。 - NodeJS

2 个答案: