[英]Send integer from client to server Java
晚上好,我把這台服務器放在這里,
http服務器
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
public class httpServer {
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();
//NimServer nimserver = new NimServer(32778);
//nimserver.serve();
}
static class MyHandler implements HttpHandler {
AtomicInteger atomicInteger = new AtomicInteger(0);
int theValue = atomicInteger.get();
@Override
public void handle(final HttpExchange t) throws IOException {
final String response;
final String requestMethod = t.getRequestMethod();
if ("GET".equals(requestMethod)) {
response = String.format("Besuche: %d%n", atomicInteger.addAndGet(1));
}
else if ("POST".equals(requestMethod)) {
atomicInteger.set(0);
response = "Reset to 0";
}
else {
throw new IOException("Unsupported method");
}
t.sendResponseHeaders(200, response.length());
final OutputStream os = t.getResponseBody();
os.write(response.getBytes());
os.close();
}
}
}
和這個客戶在這里
httpClient
import java.net.*;
import java.io.*;
public class httpClient {
static int clientno = 0;
public static void main(String[] args) throws Exception {
System.out.println(clientno);
URL test = new URL("http://localhost:8000/test");
HttpURLConnection connect = (HttpURLConnection) test.openConnection();
connect.setRequestMethod("POST");
BufferedReader in = new BufferedReader(new InputStreamReader(connect.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null)
System.out.println(inputLine);
in.close();
}
}
現在我想將int clientno從客戶端發送到服務器,服務器應該像++一樣將其計數並將其發送回客戶端。 我讀了很多有關Dataoutputstream的內容,但始終包含套接字。 有沒有插座就可以嗎?
在服務器端,您必須在“ POST”處理程序中調用t.getRequestBody()
-這將為您提供客戶端輸入。 使用BufferedReader
(如果基於文本Integer.valueOf(stream.readLine())
)或DataInputStream
(如果基於二進制文件stream.readInt()
)都可以讀取數字。 同樣,通過t.getResponseBody()
您可以將輸出輸出到客戶端,並以類似的方式寫入數字。
對於客戶端, HttpURLConnection
具有getInputStream()
和getOutputStream()
,您需要clientNumber
在服務器中一樣向其寫入clientNumber
。
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