Distributed solution - completely solve website cross domain requests

Website cross domain solution

What is website cross domain

Cross domain causes ： In the current domain name request website , It is not allowed to pass by default ajax Request to send another domain name .

Website cross domain error reporting cases

jquery-1.7.2.min.js?t=2017-07-27:4 
Failed to load http://b.itmayiedu.com:8081/ajaxB: 
No 'Access-Control-Allow-Origin' header is present on the requested resource. 
Origin 'http://a.itmayiedu.com:8080' is therefore not allowed access.

Five website cross domain solutions

1. Use jsonp Solve the problem of cross domain  
    2. Use HttpClient Internal forwarding
    3. Use the set response header to allow cross domain
    4. be based on Nginx Build enterprise level API Interface gateway
    5. Use Zuul Build microservices API Interface gateway

    

Build a cross domain project environment

Use JSONP Explain