Question

晚上好，我发现这是用Java编写的非常基本的http服务器。

npm config get proxy
npm config rm proxy
npm config rm https-proxy

现在我试图在网站上添加一个简单的计数器，计算每次访问。我刚刚找到了需要Java EE liabraries的代码。像这样：

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class Test {

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

static class MyHandler implements HttpHandler {
    @Override
    public void handle(HttpExchange t) throws IOException {
        String response = "This is the response";
        t.sendResponseHeaders(200, response.length());
        OutputStream os = t.getResponseBody();
        os.write(response.getBytes());
        os.close();
    }
}

}

是否可以使用Java SE Development Kit编写此代码？怎么样？

Answer 1

如果我理解你的问题，那么是的。最简单的方法可能是向Handler添加counter。将response添加到static class MyHandler implements HttpHandler { static int counter = 0; @Override public void handle(HttpExchange t) throws IOException { String response = String.format("This is response %d%n", counter++); t.sendResponseHeaders(200, response.length()); OutputStream os = t.getResponseBody(); os.write(response.getBytes()); os.close(); } }，然后将其递增。像，

<link href="{{!!asset('/assets/global/plugins/font-awesome/css/font-awesome.min.css') !!}}" rel="stylesheet" type="text/css" />  
<link href="{{ asset('/assets/global/plugins/font-awesome/css/font-awesome.min.css') }}" rel="stylesheet" type="text/css" />

Answer 2

我的建议是不要使用int，因为它不是线程安全的，而是你应该使用AtomicInteger

AtomicInteger atomicInteger = new AtomicInteger(123); // initialize it with a value or empty
int theValue = atomicInteger.get(); // this is how you get it
atomicInteger.addAndGet(1); // to add a value to it, you can also getAndAdd(x)

Java http服务器上的访客计数器

2 个答案: