I want to use the reverse proxy function of nginx to solve the problem of cross-domain requests
PM25 has an open interface. Just use GET to request the corresponding URL to return the corresponding JSON data
I want to use my own nginx as a proxy to access specific fields under the main domain name to obtain the JSON data of PM25
location /get_aqi_details_hangzhou
{
proxy_pass http://www.pm25.in/api/querys/pm2_5.json?city=hangzhou&token=5j1znBVAsnSf5xQyNQyq;
proxy_set_header Host $host;
}
I want to get this data by accessing the main domain name/get_aqi_details_hangzhou, and restart nginx after each configuration
In actual operation, it never succeeds and reports 404
What is the cause?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
I have never seen proxy_pass used like this. proxy_pass means that nginx acts as a proxy and passes the request to the specified host. So you need to rewrite the request path to what it needs to be.