Node.js请求数据事件未触发.我做错了什么?

Node.js request data event not firing. What am I doing wrong?

本文关键字：错了 什么 请求 js 数据 事件 Node      更新时间：2023-09-26

似乎请求对象上的数据事件没有触发，或者我无法将其连接起来以便从中获取任何内容。我得到的结束事件很好，所有的url都在工作。我看了论坛和文档，当我看我的代码，它似乎应该工作。我正在使用Node版本0.10.12。

我是新来的。我试图得到一个简单的服务器去节点。我一直在看Node初学者的书。大部分代码都来自于此，只做了一些非常小的修改。我已经从书中直接试过代码了。

这是我现在正在使用的代码。

index.js 

var server = require("./server");
var router = require("./router");
var requestHandlers = require("./requestHandlers");
var handle = {};
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;
if (process.argv[2] !== undefined && process.argv[2] !== null) {
    server.start(router.route, handle, process.argv[2]);
} else {
    server.start(router.route, handle);
}

router.js 

route = function(handle, pathname, response, postData) {
    if (typeof handle[pathname] === "function") {
        handle[pathname](response, postData);
    } else {
        response.writeHead(404, {"Content-Type": "text/plain"});
        response.end("404 Not found");
    }
}
exports.route = route;

server.js 

var http = require('http');
var url = require('url');
var portToUse = 8888;
start = function(route, handle, port) {
    if (port !== undefined && port !== null && typeof parseInt(port) === 'number' && port > 1000 && port < 10000) {
        console.log('You passed in the port number %d.', port);
        portToUse = port;
    }
    http.createServer(function(request, response) {
        var postData = '';
        var pathname = url.parse(request.url).pathname;
        console.log('Request for %s received.', pathname);
        route(handle, pathname, response);
        request.setEncoding('utf8');
        // I have tried both .on and .addListener
        request.on('data', function(postDataChunk) {
            postData += postDataChunk;
            console.log('Received POST data chunk %s.', postData);
        });
        request.on('end', function(postDataChunk) {
            console.log(postDataChunk);
            route(handle, pathname, response, postData);
        });
    }).listen(portToUse);
    console.log('The server listening on %d.', portToUse);
}
exports.start = start;

requestHandlers.js 

var exec = require('child_process').exec;
start = function(response, postData) {
    var body = '<!doctype html>' + 
    '<html lang="en">' + 
    '<head>' + 
    '<meta charset="UTF-8">' + 
    '<title>Upload Server</title>' + 
    '</head>' + 
    '<body>' + 
    '<form action="/upload">' + 
    '<textarea name="text" id="text-area" cols="40" rows="20"></textarea>' + 
    '<input type="submit" value="Submit text">' + 
    '</form>' + 
    '</body>' + 
    '</html>';
    response.writeHead(200, {"Content-Type": "text/html"});
    response.end(body);
}
upload = function(response, postData) {
    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.end('You''ve sent: ' + postData);
}
exports.start = start;
exports.upload = upload;

您需要在调用route之前添加data侦听器。原因是，在你的处理器中，你调用的是response.end。当您执行此操作时，node将检查套接字上是否有任何数据侦听器，如果没有，它将转储现有的请求数据，因为它认为不再需要这些数据。

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