Java 类javax.servlet.http.HttpServletMapping 实例源码

项目：Servlet-4.0-Sampler 文件：PushCacheFilter.java

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

    HttpServletRequest httpServletRequest = ((HttpServletRequest) request);
    HttpServletMapping mapping = ((HttpServletRequest) request).getHttpServletMapping();
    String resourceURI = mapping.getMatchValue();

    if (mapping.getServletName().equals("jsp")) {
        // Push resources
        resourceCache.keySet().stream()
                .filter(resourceURI::contains)
                .findFirst()
                .ifPresent(s -> resourceCache.get(s)
                        .forEach(path -> httpServletRequest.newPushBuilder().path(path).push()));

        // create empty resource list if absent
        resourceCache.putIfAbsent(resourceURI, Collections.newSetFromMap(new ConcurrentHashMap<>()));
    } else {
        // Add resource
        resourceCache.keySet().stream()
                .filter(httpServletRequest.getHeader("Referer")::contains)
                .forEach(page -> resourceCache.get(page).add(resourceURI));
    }

    chain.doFilter(request, response);
}

项目：Java-EE-8-Sampler 文件：PushCacheFilter.java

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

    HttpServletRequest httpServletRequest = ((HttpServletRequest) request);
    HttpServletMapping mapping = ((HttpServletRequest) request).getHttpServletMapping();
    String resourceURI = mapping.getMatchValue();

    if (mapping.getServletName().equals("jsp")) {
        // Push resources
        resourceCache.keySet().stream()
                .filter(resourceURI::contains)
                .findFirst()
                .ifPresent(s -> resourceCache.get(s)
                        .forEach(path -> httpServletRequest.newPushBuilder().path(path).push()));

        // create empty resource list if absent
        resourceCache.putIfAbsent(resourceURI, Collections.newSetFromMap(new ConcurrentHashMap<>()));
    } else {
        // Add resource
        resourceCache.keySet().stream()
                .filter(httpServletRequest.getHeader("Referer")::contains)
                .forEach(page -> resourceCache.get(page).add(resourceURI));
    }

    chain.doFilter(request, response);
}

项目：ee8-sandbox 文件：MyServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException {


    HttpServletMapping mapping = request.getHttpServletMapping();

    response.getWriter()
            .append("Mapping match:")
            .append(mapping.getMappingMatch().name())
            .append("\n")
            .append("Match value:")
            .append(mapping.getMatchValue())
            .append("\n")
            .append("Pattern:")
            .append(mapping.getPattern());
}

项目：Servlet-4.0-Sampler 文件：ServletMapping.java

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    HttpServletMapping servletMapping = request.getHttpServletMapping();
    response.getWriter()
            .append("<html><body>")
            .append("Value Matched: ").append(servletMapping.getMatchValue())
            .append("<br/>")
            .append("Pattern Used: ").append(servletMapping.getPattern())
            .append("<br/>")
            .append("Mapping Matched: ").append(servletMapping.getMappingMatch().name())
            .append("<br/>")
            .append("</body></html>");
}

项目：Java-EE-8-Sampler 文件：ServletMapping.java

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    HttpServletMapping servletMapping = request.getHttpServletMapping();
    response.getWriter()
            .append("<html><body>")
            .append("Value Matched: ").append(servletMapping.getMatchValue())
            .append("<br/>")
            .append("Pattern Used: ").append(servletMapping.getPattern())
            .append("<br/>")
            .append("Mapping Matched: ").append(servletMapping.getMappingMatch().name())
            .append("<br/>")
            .append("Servlet Name: ").append(servletMapping.getServletName())
            .append("<br/>")
            .append("</body></html>");
}

项目：ee8-sandbox 文件：ServletA.java

public static void printCurrentMappingDetails(HttpServletRequest request,
        PrintWriter out) throws IOException {
        HttpServletMapping forwardMapping = (HttpServletMapping) request.getAttribute(RequestDispatcher.FORWARD_MAPPING);
        HttpServletMapping includeMapping = (HttpServletMapping) request.getAttribute(RequestDispatcher.INCLUDE_MAPPING);
        HttpServletMapping asyncMapping = (HttpServletMapping) request.getAttribute(AsyncContext.ASYNC_MAPPING);

        out.print("<p> " + request.getHttpServletMapping() + "</p>");
        out.print("<p> FORWARD_MAPPING: " + forwardMapping + "</p>");
        out.print("<p> INCLUDE_MAPPING: " + includeMapping + "</p>");
        out.print("<p> ASYNC_MAPPING: " + asyncMapping + "</p>");
        out.print("<hr />");


}