[英]java socket programming conversation
大家好,我想在服务器和客户端之间进行java套接字对话,它与第一个消息一起工作,然后对话停止,就我而言,我想从客户端发送hi消息并从服务器接收hi消息,那么服务器还必须发送另一个按摩“输入数字以检查”并等待输入
我的客户代码是:
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);
}
}
我的服务器代码是:
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;
}
}
任何人都可以提供帮助吗?
您有一些错误,并且实现的确没有完成。
这是您的固定代码。 另外,请注意1不是素数AFAIK。
当客户端发送“再见”而不是数字时,对话结束。
服务器:
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;
}
}
客户:
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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