在 HttpServer 处理程序中使用 if 语句

Question

当用户想要http://localhost:8000/a 时，我希望I am A response 消息应该显示，（并正确显示）

但我想在使用时需要http://localhost:8000/b I am B response 消息显示。

httpServer handler中的if语句如何使用？

public class httpServerTest {

public static void main(String[] args) throws Exception {
    HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
    server.createContext("/a", new MyHandler());
    server.createContext("/b", new MyHandler());
    server.setExecutor(null); // creates a default executor
    server.start();
}

public static class MyHandler implements HttpHandler {

    @Override
    public void handle(HttpExchange t) throws IOException { // How use if here?
        String aResponse = "I am A response";
        String bResponse = "I am B response";
        t.sendResponseHeaders(200, aResponse.getBytes().length);
        OutputStream os = t.getResponseBody();
        os.write(aResponse.getBytes());
        os.close();
    }
}
}

它只显示I am A response 消息。

Answer 1

HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
server.createContext("/a", new MyHandler("A"));
server.createContext("/b", new MyHandler("B"));

public static class MyHandler implements HttpHandler {

    private String identity;

    public MyHandler(String identity) {
        this.identity = identity;
    }

    @Override
    public void handle(HttpExchange t) throws IOException { // How use if here?
        String response = "I am " + identity + " response";
        t.sendResponseHeaders(200, response.getBytes().length);
        OutputStream os = t.getResponseBody();
        os.write(response.getBytes());
        os.close();
    }
}

Answer 2

您似乎在引用 com.sun.* 私有类，因此将来可能无法使用。话虽如此，您似乎想要getRequestURI。

然后你可以说if (t.getRequestURI().getPath().startsWith("/a")) { ... } else {... }