Special thanks to: https://blog.csdn.net/zjq852533445/article/details/79485870
https://blog.csdn.net/qq767403510/article/details/54137160
Man of few words said, directly on the code:
Solution one : the specific request is added directly method @Controller layer @CrossOrigin can;
For example: On request method chase
Method two: add support for CORS (Cross Origin Resource Sharing) in the spring mvc spring-servlet.xml file because the browser security is the cornerstone of the same origin policy, within the constraints of the same origin policy, non-homologous sites between ajax not send a request, it can be arranged in the spring support CORS configuration
<mvc:cors>
<mvc:mapping path="/**" allowed-origins="*" allow-credentials="true" max-age="1800"
allowed-methods="GET,POST,PUT,DELETE,PATCH,OPTIONS"/>
</mvc:cors>