Spring Boot + thymeleaf : get logged in user

我想知道如何从Thymeleaf获取User对象。当前，我正在调用userService，它将从数据库获取用户。我不喜欢这种方法，因为对于每个调用都会进行数据库查询。

是否可以从内存中获取用户？

<link href="/css/style2.css"
    th:if="${@commanderService.getCurrentCommander()} and
        ${@commanderService.getCurrentCommander().settings == 'template=1'}"
    rel="stylesheet" type="text/css" />

CommanderService:

public Commander getCurrentCommander() {
    Object principal =
        SecurityContextHolder.getContext().getAuthentication().getPrincipal();
    Commander commander = findByName((String)principal);

    return commander;
}

最佳答案

如果您正在使用Spring Security和 thymeleaf ，则可以检查:
https://github.com/thymeleaf/thymeleaf-extras-springsecurity3

例如:

<div sec:authentication="name">
    The value of the "name" property of the authentication object should appear here.
</div>

<div sec:authorize="hasRole('ROLE_ADMIN')">
    This content is only shown to administrators.
</div>

关于 Spring Boot + thymeleaf : get logged in user，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/27253060/