调整一下代码

exp3-network/src/main/java/net/lensfrex/URLConnectionResource.java

@@ -18,9 +18,9 @@ public class URLConnectionResource {
 
             Set<Map.Entry<String, List<String>>> headers = urlConnection.getHeaderFields().entrySet();
 
-            for (Map.Entry<String, List<String>> entry : headers) {
-                String key = entry.getKey();
-                List<String> values = entry.getValue();
+            for (Map.Entry<String, List<String>> header : headers) {
+                String key = header.getKey();
+                List<String> values = header.getValue();
                 for (String value : values) {
                     System.out.printf("%s: %s%n", key, value);
                 }

exp3-network/src/main/java/net/lensfrex/socket/client/Client.java

@@ -17,7 +17,6 @@ import net.lensfrex.socket.common.MessageData;
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.OutputStream;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.util.Random;
@@ -32,9 +31,9 @@ public class Client extends Application {
         Scene scene = new Scene(new UI().buildUI(), 515, 509);
 
         // 主题，不想要或者网络出错的话注释掉就好了
-//        scene.getStylesheets().add(new URL("https://www.lensfrex.net/light.css").toExternalForm());
+        scene.getStylesheets().add(new URL("https://www.lensfrex.net/light.css").toExternalForm());
 //        scene.getStylesheets().add(new URL("https://www.lensfrex.net/dark.css").toExternalForm());
-        scene.getStylesheets().add(new URL("http://127.0.0.1/light.css").toExternalForm());
+//        scene.getStylesheets().add(new URL("http://127.0.0.1/light.css").toExternalForm());
 
         stage.setTitle("(￣﹃￣)");
         stage.setScene(scene);
@@ -53,9 +52,11 @@ class UI {
     private TextField serverTextField;
 
     private TextArea messageTextArea;
+
     private HBox userControlVBox;
     private TextField usernameTextField;
     private Button loginButton, logoutButton;
+
     private HBox messageControlVBox;
     private TextField messageTextField;
     private Button sendButton;
@@ -109,16 +110,10 @@ class UI {
         loginButton = new Button("登录");
         loginButton.setOnAction(e -> {
             try {
-                this.auth(Constant.OPCODE_LOGIN);
-
-                logoutButton.setDisable(false);
-                loginButton.setDisable(true);
-                serverTextField.setDisable(true);
-                usernameTextField.setDisable(true);
-                messageControlVBox.setDisable(false);
+                this.changeLoginStatus(true);
             } catch (Exception ex) {
                 ex.printStackTrace();
-                messageTextArea.textProperty().set("登录服务器时发生错误：" + ex);
+                messageTextArea.textProperty().set("请求服务器时发生错误：" + ex);
             }
         });
 
@@ -126,16 +121,10 @@ class UI {
         logoutButton.setDisable(true);
         logoutButton.setOnAction(e -> {
             try {
-                this.auth(Constant.OPCODE_LOGOUT);
-
-                logoutButton.setDisable(true);
-                loginButton.setDisable(false);
-                serverTextField.setDisable(false);
-                usernameTextField.setDisable(false);
-                messageControlVBox.setDisable(true);
+                this.changeLoginStatus(false);
             } catch (Exception ex) {
                 ex.printStackTrace();
-                messageTextArea.textProperty().set("登录服务器时发生错误：" + ex);
+                messageTextArea.textProperty().set(messageTextArea.getText() + "请求服务器时发生错误：" + ex);
             }
         });
 
@@ -144,29 +133,21 @@ class UI {
         return userControlVBox;
     }
 
-    private void auth(byte[] opcode) throws Exception {
-        String[] address = serverTextField.getText().split(":");
-        int port = Integer.parseInt(address[1]);
-
-        ClientConnection connection = new ClientConnection(address[0], port);
-
+    private void changeLoginStatus(boolean login) throws IOException {
         byte[] data = usernameTextField.getText().getBytes(StandardCharsets.UTF_8);
-        OutputStream outputStream = connection.getOutputStream();
-
-        Common.send(data, opcode, outputStream);
-        connection.finishOutput();
 
-        InputStream inputStream = connection.getInputStream();
-        byte[] header = new byte[4];
-        inputStream.read(header);
+        DataPack responseDataPack = this.sendData(data, login ? Constant.OPCODE_LOGIN : Constant.OPCODE_LOGOUT);
+        this.displayResponse(responseDataPack);
 
-        DataPack dataPack = Common.readDataPack(inputStream);
-        MessageData messageData = MessageData.parse(dataPack.getData());
-        messageTextArea.textProperty().set(messageTextArea.getText() +
-                        String.format("\n服务器[%s]响应：%s", messageData.getIdText(), messageData.getMessageText()));
-        connection.finishInput();
+        this.switchStatus(login);
+    }
 
-        connection.disconnect();
+    private void switchStatus(boolean online) {
+        logoutButton.setDisable(!online);
+        loginButton.setDisable(online);
+        serverTextField.setDisable(online);
+        usernameTextField.setDisable(online);
+        messageControlVBox.setDisable(!online);
     }
 
     private HBox messageControlPane() {
@@ -182,14 +163,33 @@ class UI {
 
         sendButton = new Button("发送");
         sendButton.setOnAction(e -> {
+            try {
+                MessageData messageData = new MessageData(usernameTextField.getText(), messageTextField.getText());
+                DataPack responseDataPack = this.sendData(messageData.toBytes(), Constant.OPCODE_SEND_MESSAGE);
+
+                this.displayResponse(responseDataPack);
+            } catch (Exception ex) {
+                ex.printStackTrace();
+                messageTextArea.textProperty().set(messageTextArea.getText() + "请求服务器时发生错误：" + ex);
+            }
+        });
+
+        messageControlVBox.getChildren().addAll(usernameLabel, messageTextField, sendButton);
+
+        return messageControlVBox;
+    }
+
+    private ClientConnection createConnection() throws IOException {
         String[] address = serverTextField.getText().split(":");
         int port = Integer.parseInt(address[1]);
-            try {
-                ClientConnection connection = new ClientConnection(address[0], port);
 
-                MessageData messageData = new MessageData(usernameTextField.getText(), messageTextField.getText());
+        return new ClientConnection(address[0], port);
+    }
+
+    private DataPack sendData(byte[] data, byte[] opcode) throws IOException {
+        ClientConnection connection = this.createConnection();
 
-                Common.send(messageData.toBytes(), Constant.OPCODE_SEND_MESSAGE, connection.getOutputStream());
+        Common.write(data, opcode, connection.getOutputStream());
         connection.finishOutput();
 
         InputStream inputStream = connection.getInputStream();
@@ -197,20 +197,16 @@ class UI {
         inputStream.read(header);
 
         DataPack dataPack = Common.readDataPack(inputStream);
-                MessageData responseData = MessageData.parse(dataPack.getData());
-                messageTextArea.textProperty().set(messageTextArea.getText() +
-                        String.format("\n服务器[%s]响应：%s", responseData.getIdText(), responseData.getMessageText()));
         connection.finishInput();
 
         connection.disconnect();
-            } catch (IOException ex) {
-                ex.printStackTrace();
-                messageTextArea.textProperty().set("登录服务器时发生错误：" + ex);
+        return dataPack;
     }
-        });
 
-        messageControlVBox.getChildren().addAll(usernameLabel, messageTextField, sendButton);
+    private void displayResponse(DataPack dataPack) {
+        MessageData messageData = MessageData.parse(dataPack.getData());
 
-        return messageControlVBox;
+        messageTextArea.textProperty().set(messageTextArea.getText() +
+                String.format("\n服务器[%s]响应：%s", messageData.getIdText(), messageData.getMessageText()));
     }
 }

exp3-network/src/main/java/net/lensfrex/socket/client/Global.java

@@ -1,4 +0,0 @@
-package net.lensfrex.socket.client;
-
-public class Global {
-}

exp3-network/src/main/java/net/lensfrex/socket/client/MainUI.java

@@ -1,7 +0,0 @@
-package net.lensfrex.socket.client;
-
-import javafx.scene.layout.Pane;
-
-public class MainUI extends Pane {
-
-}

exp3-network/src/main/java/net/lensfrex/socket/common/Common.java

@@ -3,7 +3,6 @@ package net.lensfrex.socket.common;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.nio.charset.StandardCharsets;
 
 public class Common {
     public static DataPack readDataPack(InputStream inputStream) {
@@ -14,27 +13,27 @@ public class Common {
         return DataPack.parse(dataPackBytes);
     }
 
-    public static int sendMessage(String id, String message, OutputStream outputStream) throws IOException {
+    public static int writeMessage(String id, String message, OutputStream outputStream) throws IOException {
         MessageData messageData = new MessageData(id, message);
 
-        return sendMessage(messageData, outputStream);
+        return writeMessage(messageData, outputStream);
     }
 
-    public static int sendMessage(MessageData message, OutputStream outputStream) throws IOException {
-        return sendMessage(message.toBytes(), outputStream);
+    public static int writeMessage(MessageData message, OutputStream outputStream) throws IOException {
+        return writeMessage(message.toBytes(), outputStream);
     }
 
-    public static int sendMessage(byte[] data, OutputStream outputStream) throws IOException {
-        return send(data, Constant.OPCODE_SEND_MESSAGE, outputStream);
+    public static int writeMessage(byte[] data, OutputStream outputStream) throws IOException {
+        return write(data, Constant.OPCODE_SEND_MESSAGE, outputStream);
     }
 
-    public static int send(byte[] data, byte[] opcode, OutputStream outputStream) throws IOException {
+    public static int write(byte[] data, byte[] opcode, OutputStream outputStream) throws IOException {
         DataPack dataPack = new DataPack(opcode, data);
 
-        return send(dataPack, outputStream);
+        return write(dataPack, outputStream);
     }
 
-    public static int send(DataPack dataPack, OutputStream outputStream) throws IOException {
+    public static int write(DataPack dataPack, OutputStream outputStream) throws IOException {
         outputStream.write(Constant.MAGIC_HEADER);
         outputStream.write(dataPack.toBytes());
 

exp3-network/src/main/java/net/lensfrex/socket/server/Server.java

@@ -63,17 +63,17 @@ class ServerThread extends Thread {
 
         if (Arrays.equals(Constant.OPCODE_LOGIN, opcode)) {
             this.login(new String(dataPack.getData()));
-            Common.sendMessage(SERVER_ID, Constant.MESSAGE_OK, outputStream);
+            Common.writeMessage(SERVER_ID, Constant.MESSAGE_OK, outputStream);
         } else if (Arrays.equals(Constant.OPCODE_LOGOUT, opcode)) {
             this.logout(new String(dataPack.getData()));
-            Common.sendMessage(SERVER_ID, Constant.MESSAGE_OK, outputStream);
+            Common.writeMessage(SERVER_ID, Constant.MESSAGE_OK, outputStream);
         } else if (Arrays.equals(Constant.OPCODE_REQUEST_MESSAGE, opcode)) {
             this.sendRandomMessage(outputStream);
         } else if (Arrays.equals(Constant.OPCODE_SEND_MESSAGE, opcode)) {
             String receivedMessage = this.receiveMessage(dataPack);
             String responseMessage = String.format("Receive message '%s'",  receivedMessage);
 
-            Common.sendMessage(SERVER_ID, responseMessage, outputStream);
+            Common.writeMessage(SERVER_ID, responseMessage, outputStream);
         }
     }
 
@@ -94,7 +94,7 @@ class ServerThread extends Thread {
     }
 
     private void sendMessage(String messageText, OutputStream outputStream) throws IOException {
-        Common.sendMessage(SERVER_ID, messageText, outputStream);
+        Common.writeMessage(SERVER_ID, messageText, outputStream);
     }
 
     private String receiveMessage(DataPack dataPack) {