我有一個Java對象，現在我想将其轉換為二進制形式(二進制協定)并通過網絡發送，C用戶端将接收它并列印内容。就像我有一個學生班
學生.java
import java.io.Serializable;
public class Student implements Serializable {
public String name;
public int id;
public String getName() { return name; }
public void setName(String name) { this.name = name; }
public int getId() { return id; }
public void setId(int id) { this.id = id; }
}
用戶端程式
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectOutputStream;
import java.net.Socket;
public class Client {
public static void main(String[] args) throws IOException {
Student s1 = new Student();
s1.setId(10);
s1.setName("abc");
Socket clientSocket = new Socket("localhost", 7777);
DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());
try {
FileOutputStream fos = new FileOutputStream("data.ser");
ObjectOutputStream oos = new ObjectOutputStream(clientSocket.getOutputStream());
oos.writeObject(s1);
// oos.close();
// fos.close();
}
catch(Exception e) {
e.printStackTrace();
}
clientSocket.close();
}
}
最後一個是server.c，它是用c語言編寫的。
伺服器
#include
#include //strlen
#include
#include //inet_addr
#include //write
int main(int argc , char *argv[]) {
int socket_desc , client_sock , c , read_size;
struct sockaddr_in server , client;
char client_message[2000];
// Create socket
socket_desc = socket(AF_INET , SOCK_STREAM , 0);
if (socket_desc == -1) {
printf("Could not create socket");
}
puts("Socket created");
// Prepare the sockaddr_in structure
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons( 7777 );
// Bind
if (bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0) {
// Print the error message
perror("bind failed. Error");
return 1;
}
puts("bind done");
// Listen
listen(socket_desc , 3);
// Accept and incoming connection
puts("Waiting for incoming connections...");
c = sizeof(struct sockaddr_in);
// Accept connection from an incoming client
client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
if (client_sock < 0) {
perror("accept failed");
return 1;
}
puts("Connection accepted");
// Receive a message from client
while ((read_size = recv(client_sock , client_message , 2000 , 0)) > 0){
// Send the message back to client
printf("\n%s", client_message);
write(client_sock , client_message , strlen(client_message));
}
if (read_size == 0) {
puts("Client disconnected");
fflush(stdout);
}
else if (read_size == -1) {
perror("recv failed");
}
return 0;
}
當我運作伺服器和用戶端時。我得到這樣的輸出：
�
sr
xp
我希望輸出應該是伺服器上列印的學生的姓名和ID。
請提供您的建議或其他建議。