Node.JS readFileSync（）函数 [英] Node.JS readFileSync() function
问题描述
index.js
var server = require("./server");
var router = require("./router");
server.start(router.route);
server.js
server.js
//Script to start a server
var http = require("http");
var url = require("url");
var fs = require("fs");
function start(route) {
function onRequest(request, response) {
var pathname = url.parse(request.url).pathname;
route(pathname, response, fs);
}
http.createServer(onRequest).listen(8888);
console.log("Server has started.");
}
exports.start = start;
router.js
router.js
function route(pathname, response, fs) {
var regex = new RegExp('^/view/?$');
var directpath = "D:/nodejs/file_upload" + pathname;
var voo = fs.readFileSync(directpath);
if(regex.test(pathname)){
response.writeHead(200, {"Content-Type": "text/html"});
console.log("About to route a request for " + pathname);
response.end(voo);
} else{
response.writeHead(404);
response.end("<br/>404, file not found");
}
}
exports.route = route;
index.html
index.html
<!DOCTYPE html>
<html>
<body>
<p>Hello My friend </p>
</body>
</html>
我正在尝试将文件路径存储在变量中，然后将其提供给readFileSync（）函数，但这让我在控制台中出现了错误。
I'm trying to store the file path in a variable and then feed it ti readFileSync() function, but this gives me fllowing error in the console.
Error: EISDIR, illegal operation on a directory
at Object.fs.readSync (fs.js:487:19)
at Object.fs.readFileSync (fs.js:326:28)
at route (D:\nodejs\file_upload\router.js:7:15)
at Server.onRequest (D:\nodejs\file_upload\server.js:15:6)
at Server.emit (events.js:98:17)
at HTTPParser.parser.onIncoming (http.js:2108:12)
at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:121:23
)
at Socket.socket.ondata (http.js:1966:22)
at TCP.onread (net.js:527:27)
但是如果我直接在函数中输入路径D：/nodejs/file_upload/view/index.html，那么它会在浏览器中显示该页面。
but if I enter the path "D:/nodejs/file_upload/view/index.html" in the function directly then it shows me the page in the browser.
我存储了视图文件夹中的index.html文件
I stored the index.html file in the view folder
推荐答案
EISDIR 错误发生当您尝试打开文件时，但给出的路径是一个目录。请参阅相关问题和答案：使用Node.js我得到，错误：EISDIR，读取。
EISDIR error occurs when you try to open a file, but the path given is a directory. See related question and answer: Using Node.js I get, "Error: EISDIR, read".
要调试这个，我会登录控制变量 directpath 和我认为它指向的是目录，而不是文件。正确地将此变量设置为预期路径可以解决您的问题。
To debug this I would log to console the variable directpath and I would assume that it is pointing to a directory, not a file. Correctly setting this variable to the intended path should solve your problem.
这篇关于Node.JS readFileSync（）函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
