VUE cross-domain problem Access to XMLHttpRequest at'http://localhost

Problem Description

VUE cannot request correct data when sending the request, the console is as follows

Access to XMLHttpRequest at 'http://localhost:8000/equip_fault_report/all' from origin 'http://localhost:8080' has been 
blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

The URL in my request js is like this

solution

Write the following in the configuration js

devServer: {
        proxy: {
            '/api': {
                target: 'http://localhost:8000',
                changeOrigin: true,
                pathRewrite: {
                    '/api': ''
                }
            }
        }
    }

It is interpreted as adding link headers, enabling cross-domain, and adding /api as identification.
It means the link under the request/api, which directly returns to the target

The URL of the request js is as follows

solve