spring - 是否有一种静态方法可以在 Spring 中获取当前的 HttpServletRequest

Question

我正在使用 Spring 注释，我可以将HttpRequestContextController 传递给 Service。

我正在寻找一种静态方式或任何比传递更好的解决方案RequestContext。

Answer 1

如果您使用的是弹簧，您可以执行以下操作：

public static HttpServletRequest getCurrentHttpRequest(){
    RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
    if (requestAttributes instanceof ServletRequestAttributes) {
        HttpServletRequest request = ((ServletRequestAttributes)requestAttributes).getRequest();
        return request;
    }
    logger.debug("Not called in the context of an HTTP request");
    return null;
}

Answer 2

或者java8方式

public static Optional<HttpServletRequest> getCurrentHttpRequest() {
    return Optional.ofNullable(RequestContextHolder.getRequestAttributes())
        .filter(ServletRequestAttributes.class::isInstance)
        .map(ServletRequestAttributes.class::cast)
        .map(ServletRequestAttributes::getRequest);
}

Answer 3

作为参考，这将是 Kotlin 的方式：

    val currentRequest: HttpServletRequest?
        get() = (RequestContextHolder.getRequestAttributes() as? ServletRequestAttributes)?.request

Answer 4

作为对“或 Java 8 方式”上面的@andrebrait 评论的回应，这些方法出现在ServletRequestAttributes.class

    public static Optional<HttpServletRequest> getCurrentHttpRequest() {
        return
            Optional.ofNullable(
                RequestContextHolder.getRequestAttributes()
            )
            .filter(ServletRequestAttributes.class::isInstance)
            .map(ServletRequestAttributes.class::cast)
            .map(ServletRequestAttributes::getRequest);
    }

Answer 5

我知道，这已经是答案了。我想标记为新更新。我们可以HttpServletRequest使用@Autowired. 它在springboot.

@Autowired
private HttpServletRequest httpServletRequest;

Answer 6

这对我有用：

HttpServletRequest request = 
    ((ServletRequestAttributes) Objects.requireNonNull(
        RequestContextHolder.getRequestAttributes()))
    .getRequest();