同时由于它过滤了每个请求，你可以执行安全特定的逻辑以保证只有满足一定标准的请求才被允许通过。
And because it filters every request, you can perform security-specific logic to ensure only requests that meet certain criteria are allowed through.
servlet过滤器的用法包括与非jsf请求集成，通过重定向传播conversation，以及管理文件上传。
Uses of this servlet filter include integration with non-JSF requests, propagating conversations over redirects, and managing file uploads.
新的过滤器API使您可以在解析期间通过请求解析器接受、忽略一个节点及其子节点或者将它们从产生的树中删除，来检查和修改文档的结构。
The new filter API lets you examine and modify a document’s structure during parsing by asking a parser to accept, skip, or remove a node and its children from the resulting tree.
在这个请求设法通过过滤器链并被服务器处理之后，一个响应将以相反的顺序通过该链发送回去。
After the request works its way through the chain and is processed by the server, a response is sent back through the chain in reverse order.
如果会话属性“login -status”为真，则通过调用链中下一个过滤器，允许请求继续进行。
If the session attribute "login-status" is true, allow the request to proceed by calling the next filter in the chain.
出现上述任意一种条件时，请求将被重新提交到servlet(通过过滤器链)。
When either of these conditions occurs, the request is resubmitted to the servlet (via the filter chain).
我们知道区分连接和请求过滤器通过观察ctx->处理程序- >attrs记录，这是来自处理程序子例程的属性。
We know to distinguish between connection and request filters by looking at ctx->handler->attrs record, which is derived from the handler subroutine's attributes.
我们知道区分连接和请求过滤器通过观察ctx->处理程序- >attrs记录，这是来自处理程序子例程的属性。
We know to distinguish between connection and request filters by looking at ctx->handler->attrs record, which is derived from the handler subroutine's attributes.
应用推荐