Question

我正在开发一个网站，我想在localserver / heroku / aws上部署

在localserver和aws上，当调用＆＃39; nodejs web.js＆＃39;端口3000工作找到。

当做工头开始时＃39;它提供了收听端口3000的反馈，但浏览器没有显示该站点。不在aws上，也不在本地服务器上。

当然，我还没有在heroku上工作。

注意：＆＃39; /公共＆＃39; dir被＆＃39; / assets＆＃39;。

取代

web.js

var http = require("http"),
// utilities for working with file paths
path = require("path"),
// utilities for accessing the file system
fs = require("fs"),
extensions = {
    ".html": "text/html",
    ".css": "text/css",
    ".js": "application/javascript",
    ".png": "image/png",
    ".gif": "image/gif",
    ".jpg": "image/jpeg",
    ".ttf": "font/truetype",
    ".otf": "font/opentype",
    ".woff": "application/x-font-woff"
};


http.createServer(function(req, res) {

// look for a filename in the URL, default to index.html
var filename = path.basename(req.url) || "index.html",
    ext = path.extname(filename),
    dir = path.dirname(req.url).substring(1),
// __dirname is a built-in variable containing the path where the code is running
    localPath = __dirname + "/assets/";
if (extensions[ext]) {
    localPath += (dir ? dir + "/" : "") + filename;
    fs.exists(localPath, function(exists) {
        if (exists) {
            getFile(localPath, extensions[ext], res);
        } else {
            res.writeHead(404);
            res.end();
        }
    });
}

function getFile(localPath, mimeType, res) {
    fs.readFile(localPath, function(err, contents) {
        if (!err) {
            res.writeHead(200, {
                "Content-Type": mimeType,
                "Content-Length": contents.length
            });
            res.end(contents);
        } else {
            res.writeHead(500);
            res.end();
        }
    });
}


}).listen(process.env.PORT || 3000, function() {
    console.log("listening on 3000");
});

Procfile

web: nodejs web.js

的package.json

{
"name": "myapp",
"version": "0.0.1",
"description": "web developer",
"main": "web.js",
"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
},
"dependencies": {
    "express": "2.5.x"
},
"engines": {
    "node": "0.8.x",
    "npm": "1.1.x"
},
"repository": {
    "type": "git",
    "url": "https://github.com/heroku/node-js-sample"
},
"keywords": [
    "node",
    "heroku"
]

Answer 1

默认情况下为：

node web.js

除非你在start {}下的package.json文件中指定，否则。

编辑Procfile

web: node web.js

应该这样做。：）

Answer 2

让我们尝试调试它，请提及以下测试结果：

确保节点正在侦听端口3000：
```
netstat -lnW | grep :3000
```
成功案例：打印监听器信息
然后尝试连接到端口3000：
```
telnet localhost 3000
```
成功案例：打印“已连接到localhost”，输入内容并按Enter键，您应该收到“400 Bad Request”错误页面

在条件部分之前向处理函数添加调试消息，如：

http.createServer(function(req, res) {
  console.log(path.basename(req.url) || "no specific page");

...}

成功案例：显而易见

'nodejs web.js'有效，'工头开始'没有

2 个答案: