spring-boot-ajax

JavaScript

#Ajax跨域问题为什么会发生跨域问题？（跨域的原因）浏览器限制。后台的请求处理是成功的，后台正常打印数据，前端控制台也正常打印数据，但浏览器在处理时拒绝了展示）访问到后台了。跨域（协议，域名，端口任何一个不一样，浏览器都认为是跨域）在交互过程中，前台向发起发起请求，前台的ip，端口与后台的ip，端口存在任何一个不同的情况都会被认为是跨域； XHR（XMLHttpRequest）请求，因为ajax是XHR请求，浏览器就会捕获跨域问题。如果您发送的请求不是XHR的请求，就算是跨域了，浏览器也不会报错！只要不是XHR请求，浏览器是不会校验的。上面三条同时满足，才有可能产生跨域安全问题。如何解决跨域问题？让浏览器不做限制，就不会有跨域安全问题。可以为浏览器指定参数，让浏览器不做校验，可以避免。但是该方法不太合理，它需要每个人（客户端）都去做收缩！发送请求时，避免发送XHR请求，这样

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