Question

我应该将文件的数据包发送到服务器，然后将其打印出来。我遇到的问题是它只打印出每个奇数（0-nothing，1- text，2- nothing，4-text等）。这可以在服务器类中完成。谁能看出他的问题是什么？

客户端

import java.io.*;
import java.net.*;

public class Client {

public static void main(String[] args) throws Exception {

    Client myCli = new Client();
    myCli.run();

}

public void run() throws Exception {

    Socket mySkt = new Socket("localhost", 9999);
    PrintStream myPS = new PrintStream(mySkt.getOutputStream());



    BufferedReader in = new BufferedReader(new FileReader("C:/Users/Thormode/Dropbox/Skole 2013-2014/java/da/src/da/tekst.txt"));

    while (in.ready()) {
        String s = in.readLine();
        myPS.println(s);
    }
    in.close();



    //BufferedReader myBR = new BufferedReader(new InputStreamReader(mySkt.getInputStream()));

    //String temp = myBR.readLine();
    //System.out.println(temp);

    mySkt.close();
    myPS.close();

}
}

服务器：

import java.io.*;
import java.net.*;

public class Server {

public static void main(String[] args) throws Exception {
    Server myServ = new Server();
    myServ.run();
}

public void run() throws Exception {

    ServerSocket mySS = new ServerSocket(9999);
    Socket SS_accept = mySS.accept();
    BufferedReader SS_BF = new BufferedReader(new InputStreamReader(
            SS_accept.getInputStream()));
    int i = 0;
    String[] array = new String[10];

    while (SS_BF.readLine() != null) {

        array[i] = SS_BF.readLine();
        i++;
    }

    for (int j = 0; j < i; j++) {
        String temp = array[j];
        System.out.println(temp);
    }

    SS_accept.close();
    mySS.close();
}


}

Answer 1

以下代码将循环读取两行：

String[] array = new String[10];

while (SS_BF.readLine() != null) {   // reads a line and forgets it's value

    array[i] = SS_BF.readLine();   // reads every second line and puts it into the array
    i++;
}

所以你必须这样做：

String[] array = new String[10];
String line = SS_BF.readLine();   // read first line and store it to 'line'

while (line != null) {
    array[i++] = line;            // set 'line' to array
    line = SS_BF.readLine();      // read next line
}

Answer 2

while (SS_BF.readLine() != null) {

    array[i] = SS_BF.readLine();
    i++;
}

您正在呼叫SS_BF.readLine两次。由于这个原因，它丢弃了第一行。

while ((String line = SS_BF.readLine()) != null) {

    array[i] = line;
    i++;
}

程序仅打印/接收所有其他数据包

2 个答案: