[英]Node.js error “terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc”
我在數字海洋上使用node.js並嘗試運行文件上傳/下載服務器。
為了確保服務器在后台運行並且在出錯時不退出,我使用以下內容
nohup nodejs server.js &
我正在使用nodejs
而不是node
命令,因為這是數字海洋推薦的。
這台服務器幾乎不用上傳和下載文件。 這適用於大約兩個文件,但隨后服務器崩潰並出現以下錯誤:
"terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc"
我不知道造成這種情況的原因,我將不勝感激。 防止崩潰將是很好的,但也使節點服務器不會崩潰也將是偉大的。 我認為這是nohup
作用,但顯然不是。 (我也無法永遠正常工作)。
這是我的服務器的代碼:
var http = require('http'),
url = require('url'),
util = require('util'),
path = require('path'),
fs = require('fs'),
qs = require('querystring');
var formidable = require('formidable'),
mime = require('mime');
var account = {username: 'test', password: 'etc'};
var accounts = [account],
port = 9090,
function dirTree(filename) {
var stats = fs.lstatSync(filename),
info = {
name: path.basename(filename),
path: ip + ':' + port + '/uploads/finished/' + path.basename(filename),
type: mime.lookup(filename).substring(0, 5)
};
if (stats.isDirectory()) {
info.type = "folder";
info.children = fs.readdirSync(filename).map(function(child) {
return dirTree(filename + '/' + child);
});
}
return info;
}
http.createServer(function(request, response) {
if(request.method.toLowerCase() == 'get') {
var filePath = './content' + request.url;
if (filePath == './content/') {
filePath = './content/home.html';
}
if (filePath == './content/feed') {
a = dirTree('./content/uploads/finished');
response.end(JSON.stringify(a));
}
var extname = path.extname(filePath);
var contentType = mime.lookup(extname);
fs.exists(filePath, function (exists) {
if (exists) {
fs.readFile(filePath, function (error, content) {
if (error) {
response.writeHead(500);
response.end();
}
else {
response.writeHead(200, {'Content-Type': contentType});
response.end(content, 'utf-8');
}
})
} else {
response.writeHead(404);
response.end();
}
});
}
if (request.method.toLowerCase() == 'post') {
var form = new formidable.IncomingForm;
if (request.url == '/verify') {
form.parse(request, function (err, fields, files) {
for (i = 0; i < accounts.length; i++) {
if (fields.username == accounts[i].username && fields.password == accounts[i].password) {
fs.readFile('./content/uploadForm.html', function (error, content) {
if (error) {
response.end('There was an error');
} else {
response.end(content);
}
});
} else {
fs.readFile('./content/invalidLogin.html', function (error, content) {
if (error) {
response.end('There was an error');
} else {
response.end(content);
}
});
}
}
});
} else if (request.url == '/upload') {
var oldPath,
newPath,
fileName;
form.uploadDir = './content/uploads/temp/';
form.keepExtensions = true;
form.parse(request, function (err, fields, files) {
type = files['upload']['type'];
fileName = files['upload']['name'];
oldPath = files['upload']['path'];
newPath = './content/uploads/finished/' + fileName;
});
form.on('end', function () {
fs.rename(oldPath, newPath, function (err) {
if (err) {
response.end('There was an error with your request');
console.log('error')
} else {
response.end('<h1>Thanks for uploading ' + fileName + '<h1>');
}
});
});
}
}
}).listen(port);
console.log('listening on ' + port);
看起來你的腳本剛用完可用內存。
您很可能上傳或下載非常大的文件,並在接收或發送時讀取內存中的完整文件。
您應該使用流操作重寫代碼,然后使用chunk-by-chunk處理文件。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.