[英]java socket programming conversation
大家好,我想在服務器和客戶端之間進行java套接字對話,它與第一個消息一起工作,然后對話停止,就我而言,我想從客戶端發送hi消息並從服務器接收hi消息,那么服務器還必須發送另一個按摩“輸入數字以檢查”並等待輸入
我的客戶代碼是:
public class ClientSide {
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception{
ClientSide clientSideInstance = new ClientSide();
clientSideInstance.run();
}
/**
* @throws Exception
*/
public void run() throws Exception{
Socket soc = new Socket("localhost",4321);
PrintStream printStream = new PrintStream(soc.getOutputStream());
printStream.println("hi");
InputStreamReader Inputreader = new InputStreamReader(soc.getInputStream());
BufferedReader bufferedReader = new BufferedReader(Inputreader);
String receivedMsg = bufferedReader.readLine();
System.out.println(receivedMsg);
}
}
我的服務器代碼是:
public class ServerSide {
private PrintStream printStream;
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception{
ServerSide serverSideInstance = new ServerSide();
serverSideInstance.run();
}
/**
* @throws Exception
*/
public void run() throws Exception{
ServerSocket socket = new ServerSocket(4321);
Socket soc = socket.accept();
InputStreamReader Inputreader = new InputStreamReader(soc.getInputStream());
BufferedReader bufferedReader = new BufferedReader(Inputreader);
String receivedMsg = bufferedReader.readLine();
System.out.println(receivedMsg);
// parsing client massage
if(receivedMsg.trim().equalsIgnoreCase("hi")){
printStream = new PrintStream(soc.getOutputStream());
printStream.println("hi");
printStream.println("enter number to check ");
InputStreamReader InputreaderForPrimeNumber = new InputStreamReader(soc.getInputStream());
BufferedReader bufferedReaderForPrimeNumber = new BufferedReader(InputreaderForPrimeNumber);
String number = bufferedReaderForPrimeNumber.readLine();
if(isPrime(Integer.parseInt(number))){
printStream.println("yes - it is Prime number :)");
}else{
printStream.println("No - it is not a Prime number :(");
}
}
}
private boolean isPrime(int n) {
for(int i=2;i<n;i++) {
if(n%i==0)
return false;
}
return true;
}
}
任何人都可以提供幫助嗎?
您有一些錯誤,並且實現的確沒有完成。
這是您的固定代碼。 另外,請注意1不是素數AFAIK。
當客戶端發送“再見”而不是數字時,對話結束。
服務器:
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
public class ServerSide {
private PrintStream printStream;
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception{
ServerSide serverSideInstance = new ServerSide();
serverSideInstance.run();
}
/**
* @throws Exception
*/
public void run() throws Exception{
ServerSocket socket = new ServerSocket(4321);
Socket soc = socket.accept();
InputStreamReader Inputreader = new InputStreamReader(soc.getInputStream());
BufferedReader bufferedReader = new BufferedReader(Inputreader);
printStream = new PrintStream(soc.getOutputStream());
while (true){
String receivedMsg = bufferedReader.readLine();
System.out.println(receivedMsg);
// parsing client massage
if(receivedMsg.trim().equalsIgnoreCase("hi")){
printStream.println("hi");
printStream.println("enter number to check: ");
}else if (receivedMsg.trim().equalsIgnoreCase("bye")){
// printStream.println("bye");
break;
}else{
if(isPrime(Integer.parseInt(receivedMsg))){
printStream.println("Yes - it is a prime number :)");
}else{
printStream.println("No - it is not a prime number :(");
}
printStream.println("enter number to check: ");
}
}
}
private boolean isPrime(int n) {
if (n==1) return false;
for(int i=2;i<n;i++) {
if(n%i==0){
return false;
}
}
return true;
}
}
客戶:
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
public class ClientSide {
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception{
ClientSide clientSideInstance = new ClientSide();
clientSideInstance.run();
}
/**
* @throws Exception
*/
public void run() throws Exception{
BufferedReader brr = new BufferedReader(new InputStreamReader(System.in));
Socket soc = new Socket("localhost", 4321);
PrintStream printStream = new PrintStream(soc.getOutputStream());
printStream.println("hi");
InputStreamReader Inputreader = new InputStreamReader(soc.getInputStream());
BufferedReader bufferedReader = new BufferedReader(Inputreader);
String receivedMsg = bufferedReader.readLine().trim();
System.out.println(receivedMsg);
while (true){
receivedMsg = bufferedReader.readLine();
System.out.println(receivedMsg);
if (receivedMsg.equalsIgnoreCase("enter number to check: ")){
String userMessage = brr.readLine().trim(); // read from stdin
printStream.println(userMessage); // send message/number to server
if (userMessage.equalsIgnoreCase("bye")){
break;
}
receivedMsg = bufferedReader.readLine().trim();
System.out.println(receivedMsg);
}
}
}
}
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