我正在尝试从字符串中逐字地读取文本文件（从文件中逐行读取）。
它工作正常，直到客户端的readObject没有任何东西可读，而且我得到异常并转到“客户端错误”。
我试图关闭流和套接字，提出问题，我也尝试使用扫描仪，但上面的选项都没有帮助我。
你帮我吗？客户方：
package hit.model;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.ArrayList;
import javax.swing.JOptionPane;
public class MMUClient {
private ArrayList<String> userDetails;
private String fileFromServer =null;
private ObjectOutputStream outToServer;
private ObjectInputStream inFromServer;
private String fileName;
private boolean ERROR = true;
private String messageError = "No Errors";
private PrintWriter printerWriter;
public MMUClient(ArrayList<String> userParameters){
userDetails = userParameters;
};
public MMUClient(String filePath){
fileName = filePath;
};
public ArrayList<String> getUserDetails() {
return userDetails;
}
public void setUserDetails(ArrayList<String> userDetails) {
this.userDetails = userDetails;
clientAuthenticate();
}
public void clientAuthenticate(){
try{
Socket myServer = null;
try {
//1. creating a socket to connect to the server
myServer = new Socket("localhost", 12345);
System.out.println("Connected to localhost in port 12345");
//2. get Input and Output streams
outToServer = new ObjectOutputStream(myServer.getOutputStream());
inFromServer=new ObjectInputStream(myServer.getInputStream());
//3: Communicating with the server
outToServer.writeObject(userDetails);
//4. get server answer
fileFromServer = (String) inFromServer.readObject();
printerWriter = new PrintWriter("logClient.txt");
if(fileFromServer.contains("Error")){
messageError = "Error";
ERROR = true;
}
else{
if (fileFromServer.contains("Wrong")){
messageError = "Wrong";
ERROR = true;
}
else
while(fileFromServer != null){
// messageError = "No Errors";
// ERROR = false;
System.out.println(fileFromServer);
printerWriter.println(fileFromServer);
// writeData(fileFromServer);
fileFromServer = (String) inFromServer.readObject();
}
printerWriter.close();
}
} catch (IOException e) {
System.out.println("Client error");
}finally{
inFromServer.close();
outToServer.close();
myServer.close();
}
}catch (Exception e) {
System.out.println("Client error Details");
}
}
//**********************write into text file from server***************************
/* private void writeData(String lineToWrite) {
FileWriter fileWriter = null;
String filetowrite = "logClient.txt";
try {
PrintWriter printerWriter = new PrintWriter(filetowrite);
printerWriter.println(lineToWrite);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
*/
//************************if there is any error with the client******************************
public boolean getError(){
return ERROR;
}
public String getMessageError() {
return messageError;
}
public void setMessageError(String messageError) {
this.messageError = messageError;
}
}
服务器端：
package hit.applicationservice;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Scanner;
import hit.login.AuthenticationManager;
public class MMULogFileApplicationService implements Runnable {
//MMULogService logService;
AuthenticationManager authenticateDetails;
MMULogFileBrowsing browsing;
ArrayList<String> userDetails;
private Socket someClient = null;
private ObjectOutputStream outToClient;
private ObjectInputStream inFromClient;
String filePath = "/Users/oferg/Desktop/lastVirsion/MMUProject/log.txt";
public MMULogFileApplicationService (Socket socket ){
someClient = socket;
};
@Override
public void run() {
//3. get Input and Output streams
try{
outToClient = new ObjectOutputStream(someClient.getOutputStream());
inFromClient = new ObjectInputStream(someClient.getInputStream());
userDetails = (ArrayList<String>) inFromClient.readObject();
System.out.println("Connection successful ");
}catch(IOException | ClassNotFoundException ioException){
ioException.printStackTrace();
}
boolean userFound = false;
try {
authenticateDetails = new AuthenticationManager();
userFound = authenticateDetails.authenticate(userDetails.get(0), userDetails.get(1));
if(userFound)
{
browsing = new MMULogFileBrowsing(someClient, userDetails.get(2), filePath);
if(!browsing.searchIfFileExist()){
//write object to Socket
String sendMessage = "Wrong FileName the file isn't found";
outToClient.writeObject(sendMessage);
}
else{
getFileToClient();
}
}
else
{
//write object to Socket
String sendMessage = "Error - the user isn't exist";
outToClient.writeObject(sendMessage);
}
} catch (ClassNotFoundException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try {
inFromClient.close();
outToClient.close();
someClient.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private void getFileToClient() throws IOException {
FileReader fileReader = null;
String currentLine = null;
try {
fileReader = new FileReader(filePath);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
BufferedReader bufferedReader = new BufferedReader(fileReader);
while ((currentLine = bufferedReader.readLine())!= null){
if (currentLine.isEmpty() == false ){
outToClient.writeObject(currentLine);
outToClient.flush();
}
}
outToClient.close();
bufferedReader.close();
fileReader.close();
}
}
答案 0 :(得分：0)
String currentLine = "";
BufferedReader bufferedReader = new BufferedReader(fileReader);
while ((tempLine = bufferedReader.readLine())!= null){
if (tempLine.isEmpty() == false ){
currentLine = currentLine+tempLine+"\n";
}
}
以这种方式我逐行复制文本文件并将其发送到客户端1个字符串，而不是我能做任何我想做的事。
tnx every1。 和平