Spring Security封装threadLocal

Spring Security封装了ThreadLocal来保存SecurityContext。SecurityContextHolder是用来保存SecurityContext的类，而SecurityContext中包含了当前正在访问系统的用户的详细信息。默认情况下，SecurityContextHolder使用ThreadLocal来保存SecurityContext，这意味着在同一线程中的方法中，我们可以从ThreadLocal中获取当前的SecurityContext。Spring Security会在每次请求完成后自动清除当前线程的ThreadLocal，从而确保安全性。所以，Spring Security通过封装ThreadLocal来实现对SecurityContext的保存和管理。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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