how to proxy API requests? (Angular-CLI) - spring

Question

I'm working on Java project with Spring-4 and Angular-5. Session is generated on spring side.
So, I'm not able to generate this session from angular Service. It's working on Postman and I'm able to get response in PostMan.
But It's not working with Angular post method call.
So, I thought that it's may be a issue of Proxy. (Corrent me If i'm wrong).
So, My local Url is :- http://localhost:8080/MacromWeb/ws/login
So, How Can I make a proxy.conf.json file?
So for that I have added this code to my package.json file,
"start": "ng serve --proxy-config proxy.conf.json",
I have created a new file called proxy.conf.json.
And Put this code in it.
{
"/": {
"target": "http://localhost:8080/MacromWeb/ws",
"secure": false
}
}
Then I tried with ng serve and npm start both.
Postman Screenshot.

Answer 1

You can achieve this through proxy, You need to provide proper values in the proxy config.
/* should work too, but if MacromWeb is common in API URLs, then instead of / provide /MacromWeb/*
proxy.conf.json looks something like this,
{
"/MacromWeb/*": {
"target": {
"host": "localhost",
"protocol": "http:",
"port": 8080
},
"secure": false,
"changeOrigin": true,
"logLevel": "debug"
}
}
Hope it helps.

Answer 2

Say we have a server running on http://localhost:3000 and we want all calls to http://localhost:4200/api to go to that server.
In our proxy.conf.json file, we add the following content
{
"/api": {
"target": "http://localhost:3000",
"secure": false,
"pathRewrite": {
"^/api": ""
}
}
}
More on this: here