如何使用NodeJS，Nginx和base64上传图像？ （413 PayloadTooLargeError：请求实体太大）

Question

I am trying to upload 5 base64 images using Postman raw text option, with application/json header set. The server keeps returning the error mentioned. I am using NodeJS behind Nginx reverse proxy.

I have tried all of the options mentioned in the code below, including increasing the limits up to (100M), which apparently wasn't the issue.

NodeJS (MAXIMUM_FILE_SIZE_LIMIT='500mb'):

app.use(bodyParser.urlencoded({ limit: process.env.MAXIMUM_FILE_SIZE_LIMIT, parameterLimit: 100000, extended: true }));
app.use(bodyParser.json({ limit: process.env.MAXIMUM_FILE_SIZE_LIMIT, extended: true }));
// app.use(bodyParser.text({ limit: process.env.MAXIMUM_FILE_SIZE_LIMIT, extended:true }));
app.use( bodyParser.text({type : 'application/text-enriched', limit: process.env.MAXIMUM_FILE_SIZE_LIMIT}) );   
app.use( bodyParser.raw({limit: process.env.MAXIMUM_FILE_SIZE_LIMIT}) );   

Nginx
Configuration inside (server, http, location):
nginx.conf,
sites-enabled/default,
sites-available/default:

client_max_body_size 100M

I want to succeed uploading the images (5), which their total size is not more than 2MB.

Answer 1

The solution finally was to leave the nginx's client_max_body_size 5M; only at the nginx.conf , as-well as using the following lines in my NodeJS code:

app.use(bodyParser.urlencoded({ limit: '5mb', extended: true }));
app.use(bodyParser.json({ limit: '5mb' }));

PLEASE NOTE!!!
After trying a lot of combinations the problem appeared to be unrelated to the metnioned above, at all.
While using the node command in-order to execute the server, everything worked great. But, because I wanted to keep the application alive (in-case of a server reboot), I have used forever .
Forever started the application, but apparently kept throwing the 413 error everytime, regardless of nginx's and node's settings.
Switched to PM2 , which finally solved that.

Good luck!