为server.js文件获取意外的标记ILLEGAL错误

所以我正在阅读操作手册中的node.js，我正在试图在第二章中构build基于聊天的应用程序。 但是，当我尝试运行HTTP服务器时，我一直在获取意外的标记ILLEGAL，但我似乎没有看到任何错误：

var http = require('http'); var fs = require('fs'); var path = require('path'); var mime = require('mime'); var cache = {}; function send404(response) { response.writeHead(404, {'Content-Type': 'text/plain'}); response.write('Error 404: resource not found.'); response.end(); } function sendFile(response, filePath, fileContents) { response.writeHead( 200, {"content-type": mime.lookup(path.basename(filePath))} ); response.end(fileContents); } function serveStatic(response, cache, absPath) { if (cache[absPath]) { sendFile(response, absPath, cache[absPath]); } else { fs.exists(absPath, function(exists) { if (exists) { fs.readFile(absPath, function(err, data) { if (err) { send404(response); } else { cache[absPath] = data; sendFile(response, absPath, data); } }); } else { send404(response); } }); } }  var server = http.createServer(function(request, response) { var filePath = false; if (request.url == '/') { filePath = 'public/index.html'; } else { filePath = 'public' + request.url; } var absPath = './' + filePath; serveStatic(response, cache, absPath); }); server.listen(3000, function() {  console.log("Server listening on port 3000."); }); 

Answer 1

你的代码中似乎有奇怪的隐藏字符，试试这个

 var http = require('http'); var fs = require('fs'); var path = require('path'); var mime = require('mime'); var cache = {}; function send404(response) { response.writeHead(404, {'Content-Type': 'text/plain'}); response.write('Error 404: resource not found.'); response.end(); } function sendFile(response, filePath, fileContents) { response.writeHead( 200, {"content-type": mime.lookup(path.basename(filePath))} ); response.end(fileContents); } function serveStatic(response, cache, absPath) { if (cache[absPath]) { sendFile(response, absPath, cache[absPath]); } else { fs.exists(absPath, function(exists) { if (exists) { fs.readFile(absPath, function(err, data) { if (err) { send404(response); } else { cache[absPath] = data; sendFile(response, absPath, data); } }); } else { send404(response); } }); } } var server = http.createServer(function(request, response) { var filePath = false; if (request.url == '/') { filePath = 'public/index.html'; } else { filePath = 'public' + request.url; } var absPath = './' + filePath; serveStatic(response, cache, absPath); }); server.listen(3000, function() { console.log("Server listening on port 3000."); });