How to solve the problem of nginx cross-domain

There are two ways to solve Nginx cross-domain problem: modify cross-domain response headers: add directives to allow cross-domain requests, specify allowed methods and headers, and set cache time. Use CORS module: Enable modules and configure CORS rules to allow cross-domain requests, methods, headers, and cache time.

Solve Nginx cross-domain issues

Cross-domain issues refer to browsers that restrict web scripts from different domain names from access to resources from other domain names for security reasons. Cross-domain issues may occur when using Nginx as a web server.

How to solve Nginx cross-domain problem

There are two main ways to solve Nginx cross-domain problem:

1. Modify cross-domain response header

Add the following directive to the Nginx configuration file to modify the cross-domain response header:

 <code>add_header Access-Control-Allow-Origin *; add_header Access-Control-Allow-Methods GET, POST, PUT, DELETE, OPTIONS; add_header Access-Control-Allow-Headers Content-Type, Authorization; add_header Access-Control-Max-Age 86400;</code>

The functions of these instructions are as follows:

• Access-Control-Allow-Origin: * Allow requests from all domain names.
• Access-Control-Allow-Methods specifies the allowed request method.
• Access-Control-Allow-Headers specifies the allowed request headers.
• Access-Control-Max-Age specifies the cache time for the result of the preflight request.

2. Use the CORS module

Nginx officially provides a CORS module called ngx_http_cors_module . It allows for more flexibility in handling cross-domain requests.

To enable the CORS module in Nginx, add the following directive in main context:

 <code>load_module modules/ngx_http_cors_module.so;</code>

Then, in the server context, add the following directive to configure the CORS rules:

 <code>cors_allow_origin all; cors_allow_methods all; cors_allow_headers all; cors_max_age 86400;</code>

These instructions work similarly to how they modify cross-domain response headers.

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