node.js - EACCES : permission denied with Node JS

Question

使用 Node.js 写入文件(文件名为 book)时出现以下错误，您能帮忙吗？

Error: EACCES: permission denied, open '/book'
    at Object.openSync (fs.js:443:3)
    at Object.writeFileSync (fs.js:1163:35)
    at Object.<anonymous> (/home/ubuntu/remoteserver/ionicappGate.js:375:6)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
    at startup (internal/bootstrap/node.js:266:19)

代码如下

const fs = require('fs');
const path = "/book";

//do whatever required after initialize
fs.writeFileSync(path, "hello book");
app.use("/", router);

app.listen(4000, () => console.log('Platform Server running on port 4000'))

Answer 1

您正在尝试写入文件系统“/book”的根目录。这可能是写保护的(Linux 中默认)。如果您确实要写入该目录，请检查以确保运行 Node 进程的用户具有该文件夹的写入权限。否则，更改为相对于脚本的路径，例如 ./book，并再次确保运行 Node 进程的用户对该文件夹具有写入权限。