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java getservername_Java ServletRequest.getServerName方法代码示例

代码

2023-03-02 10:31:14 时间

import javax.servlet.ServletRequest; //导入方法依赖的package包/类

/\*\*

\* Rewrites the outgoing stream to make sure URLs and headers

\* are correct. The incoming request is first processed to

\* identify what resource we want to proxy.

\* @see javax.servlet.Filter\#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)

\*/

public void doFilter(ServletRequest request, ServletResponse response,

FilterChain filterChain) throws IOException, ServletException \{

if (response.isCommitted()) \{

log.info("Not proxying, already committed.");

return;

\} else if (!(request instanceof HttpServletRequest)) \{

log.info("Request is not HttpRequest, will only handle HttpRequests.");

return;

\} else if (!(response instanceof HttpServletResponse)) \{

log.info("Request is not HttpResponse, will only handle HttpResponses.");

return;

\} else \{

HttpServletResponse httpResponse = (HttpServletResponse) response;

HttpServletRequest httpRequest = (HttpServletRequest) request;

Server server = serverChain.evaluate(httpRequest);

if (server == null) \{

log.info("Could not find a rule for this request, will not do anything.");

filterChain.doFilter(request, response);

\} else \{

httpRequest.setAttribute("proxyServer", server);

String ownHostName = request.getServerName() + ":" + request.getServerPort();

UrlRewritingResponseWrapper wrappedResponse;

wrappedResponse = new UrlRewritingResponseWrapper(httpResponse, server, ownHostName, httpRequest.getContextPath(), serverChain);

filterChain.doFilter(httpRequest, wrappedResponse);

wrappedResponse.processStream();

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java getservername_Java ServletRequest.getServerName方法代码示例

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