Java 多次调用com.sun HttpContext处理程序

我正在尝试制作一个简单的HttpServer，为动态创建的网页提供服务。但是，我注意到，无论我使用什么浏览器，HttpServer的HttpContext的处理程序都会被多次调用。相关代码附于下文：

主类中的主方法：

    public static void main(String[] args) throws ParseException {
        try {
            HttpServer server = HttpServer.create(new InetSocketAddress(80), 0);
            HttpContext context = server.createContext("/");
            context.setHandler(exchange -> {
                switch (exchange.getRequestMethod()) {
                    case "GET": httpGet(exchange); break;
                    case "HEAD": httpHead(exchange); break;
                    // ... redacted for brevity
                }
            });
            server.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static final void httpGet(HttpExchange exchange) throws IOException {
        System.out.println(exchange);
        String[] resource = exchange.getRequestURI().toString().substring(1).split("/");
        String page;
        if (resource.length <= 0) {
            // serve the home page
            page = "home";
        } else if (resource[0].equals("stock")) {
            if (resource.length < 2) {
                // display stock index
                page = "index";
            } else {
                String ticker = resource[1];
                if (resource.length < 3) {
                    // display stock summary
                    page = "summary";
                } else {
                    String targetPage = resource[2];
                    page = DatabaseAbstraction.getPage(ticker, targetPage);
                }
            }
        } else {
            page = DatabaseAbstraction.get404Page();    
        }
        exchange.sendResponseHeaders(200, page.getBytes().length);
        exchange.getResponseBody().write(page.getBytes());
        exchange.getResponseBody().close();
        return;
    }

主类中的处理程序：

    public static void main(String[] args) throws ParseException {
        try {
            HttpServer server = HttpServer.create(new InetSocketAddress(80), 0);
            HttpContext context = server.createContext("/");
            context.setHandler(exchange -> {
                switch (exchange.getRequestMethod()) {
                    case "GET": httpGet(exchange); break;
                    case "HEAD": httpHead(exchange); break;
                    // ... redacted for brevity
                }
            });
            server.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static final void httpGet(HttpExchange exchange) throws IOException {
        System.out.println(exchange);
        String[] resource = exchange.getRequestURI().toString().substring(1).split("/");
        String page;
        if (resource.length <= 0) {
            // serve the home page
            page = "home";
        } else if (resource[0].equals("stock")) {
            if (resource.length < 2) {
                // display stock index
                page = "index";
            } else {
                String ticker = resource[1];
                if (resource.length < 3) {
                    // display stock summary
                    page = "summary";
                } else {
                    String targetPage = resource[2];
                    page = DatabaseAbstraction.getPage(ticker, targetPage);
                }
            }
        } else {
            page = DatabaseAbstraction.get404Page();    
        }
        exchange.sendResponseHeaders(200, page.getBytes().length);
        exchange.getResponseBody().write(page.getBytes());
        exchange.getResponseBody().close();
        return;
    }

private static final void httpGet（HttpExchange）引发IOException{
系统输出打印项次（交换）；
String[]resource=exchange.getRequestURI（）.toString（）.substring（1.split（“/”）；
字符串页；
如果（resource.length它被调用了多少次？您发送了多少次请求？您好，调用它的次数似乎是随机的。有时它只被调用了一次，其他时候我看到它被调用了多达四次。我不确定发送了多少个请求；我正在尝试从浏览器访问它。您认为我应该使用它吗？HttpContext根据每个请求执行，这就是为什么我要问您从浏览器中触发了多少个请求