大家好抱歉打扰每个人，我需要在Netbeans for TCP / IP Server上进行一些帮助编码，问题是我得到的实现是创建套接字但是我使用TCP / IP Builder Application来测试我的程序
当我尝试接收某些数据时，问题就出现了，因为TCP / IP Builder需要关闭套接字才能刷新Netbeans应用，请帮助我（
Declare
Type my_record is record(
CUST_ID number(7);
CUST_NAME varchar2(200);
);
my_var my_record ;
my_new_var my_var.CUST_NAME%type;
begin
null;
end;
package my.protinterface;
import java.awt.Image;
import javax.swing.ImageIcon;
import java.sql.*;
import java.io.*;
import java.net.*;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author mauricio_gonzalez
*/
public class PROTInterface extends javax.swing.JFrame {
/**
* Creates new form PROTInterface
*/
public PROTInterface() {
initComponents();
}
//FRAME LOGO
Image img =(new ImageIcon(getClass().getResource("logo.png"))).getImage();
//SQL
Connection con;
//TCP/IP
public static ArrayList clientOutputStreams;
public static ArrayList<String> users;
//Classes
protocols.SQLConnection sqlconnection = new protocols.SQLConnection();
protocols.TCP_IP tcp_ip = new protocols.TCP_IP();
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
Label_Protocols1 = new javax.swing.JLabel();
Label_Protocols2 = new javax.swing.JLabel();
ComboBox_Protocols_Protocol = new javax.swing.JComboBox();
ComboBox_Protocols_Port = new javax.swing.JComboBox();
Button_Protocols_Start = new javax.swing.JButton();
Button_Protocols_Clean = new javax.swing.JButton();
jPanel2 = new javax.swing.JPanel();
ComboBox_Database_Name = new javax.swing.JComboBox();
ComboBox_Database_Field = new javax.swing.JComboBox();
Label_Database1 = new javax.swing.JLabel();
Label_Database2 = new javax.swing.JLabel();
Button_Database_Connect = new javax.swing.JButton();
Button_Database_Test = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
TextArea_Protocols = new javax.swing.JTextArea();
jScrollPane2 = new javax.swing.JScrollPane();
TextArea_Database = new javax.swing.JTextArea();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Smart Manufacturing Interface");
setIconImage(img);
setResizable(false);
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Protocols"));
Label_Protocols1.setText("Protocol");
Label_Protocols2.setText("Port");
ComboBox_Protocols_Protocol.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "OPC-UA", "TCP/IP", "UDP" }));
ComboBox_Protocols_Port.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "7171", "7172" }));
Button_Protocols_Start.setText("Start Server");
Button_Protocols_Start.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Button_Protocols_StartActionPerformed(evt);
}
});
Button_Protocols_Clean.setText("Clean Record");
Button_Protocols_Clean.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Button_Protocols_CleanActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Label_Protocols1)
.addComponent(Label_Protocols2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(ComboBox_Protocols_Port, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(ComboBox_Protocols_Protocol, 0, 130, Short.MAX_VALUE)))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(Button_Protocols_Clean)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(Button_Protocols_Start)))
.addContainerGap())
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Label_Protocols1)
.addComponent(ComboBox_Protocols_Protocol, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Label_Protocols2)
.addComponent(ComboBox_Protocols_Port, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Button_Protocols_Start)
.addComponent(Button_Protocols_Clean)))
);
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Database"));
jPanel2.setPreferredSize(new java.awt.Dimension(267, 152));
ComboBox_Database_Name.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "ADA", "Smart_Manufacturing" }));
ComboBox_Database_Field.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "All", "User Level", "Name", "User Name", "Email", "Employee Number", "Job Title", "MAC", "PC Active", "LAP Active", "Cellphone", "Birthday", "Shoes Number", "Admission Date" }));
Label_Database1.setText("Database");
Label_Database2.setText("Field");
Button_Database_Connect.setText("Connect");
Button_Database_Connect.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Button_Database_ConnectActionPerformed(evt);
}
});
Button_Database_Test.setText("Test");
Button_Database_Test.setEnabled(false);
Button_Database_Test.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Button_Database_TestActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(Label_Database2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(ComboBox_Database_Field, javax.swing.GroupLayout.PREFERRED_SIZE, 130, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(Label_Database1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(Button_Database_Test, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(ComboBox_Database_Name, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 130, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Button_Database_Connect, javax.swing.GroupLayout.Alignment.TRAILING)))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(ComboBox_Database_Name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Label_Database1))
.addGap(18, 18, 18)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(ComboBox_Database_Field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Label_Database2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Button_Database_Connect)
.addComponent(Button_Database_Test)))
);
TextArea_Protocols.setEditable(false);
TextArea_Protocols.setColumns(20);
TextArea_Protocols.setLineWrap(true);
TextArea_Protocols.setRows(5);
TextArea_Protocols.setToolTipText("Text generated by communicated devices");
TextArea_Protocols.setSelectionColor(new java.awt.Color(255, 102, 102));
jScrollPane1.setViewportView(TextArea_Protocols);
TextArea_Database.setEditable(false);
TextArea_Database.setColumns(20);
TextArea_Database.setLineWrap(true);
TextArea_Database.setRows(5);
TextArea_Database.setToolTipText("Text generated by Database connection actions");
TextArea_Database.setSelectionColor(new java.awt.Color(255, 102, 102));
jScrollPane2.setViewportView(TextArea_Database);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 267, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, 265, Short.MAX_VALUE)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 265, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.CENTER)
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 98, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jScrollPane2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 98, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void Button_Database_ConnectActionPerformed(java.awt.event.ActionEvent evt) {
try {
con = sqlconnection.doDatabaseConnection(ComboBox_Database_Name.getSelectedItem().toString());
} catch (ClassNotFoundException | SQLException ex) {
Logger.getLogger(PROTInterface.class.getName()).log(Level.SEVERE, null, ex);
}
Button_Database_Test.setEnabled(true);
}
private void Button_Database_TestActionPerformed(java.awt.event.ActionEvent evt) {
String textbuffer = "";
try {
textbuffer = sqlconnection.getDatabaseTest(con,ComboBox_Database_Field.getSelectedItem().toString());
} catch (SQLException ex) {
Logger.getLogger(PROTInterface.class.getName()).log(Level.SEVERE, null, ex);
}
if(!"".equals(textbuffer))
TextArea_Database.setText(textbuffer);
else
TextArea_Database.setText("No Textbuffer");
}
private void Button_Protocols_CleanActionPerformed(java.awt.event.ActionEvent evt) {
TextArea_Protocols.setText("");
}
private void Button_Protocols_StartActionPerformed(java.awt.event.ActionEvent evt) {
if("Start Server".equals(Button_Protocols_Start.getText())){
if("TCP/IP".equals(ComboBox_Protocols_Protocol.getSelectedItem())){
Thread starter = new Thread(new ServerStart());
starter.start();
TextArea_Protocols.append("Server started...\n");
ComboBox_Protocols_Protocol.setEnabled(false);
ComboBox_Protocols_Port.setEnabled(false);
Button_Protocols_Start.setText("End Server");
}
}
else if("End Server".equals(Button_Protocols_Start.getText())){
if("TCP/IP".equals(ComboBox_Protocols_Protocol.getSelectedItem())){
tcp_ip.tellEveryone("Server:is stopping and all users will be disconnected.\n:Chat", TextArea_Protocols);
TextArea_Protocols.append("Server stopping... \n");
try
{
Thread.sleep(5000); //5000 milliseconds is five second.
}
catch(InterruptedException ex) {Thread.currentThread().interrupt();}
TextArea_Protocols.setText("");
ComboBox_Protocols_Protocol.setEnabled(true);
ComboBox_Protocols_Port.setEnabled(true);
Button_Protocols_Start.setText("Start Server");
}
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(PROTInterface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(PROTInterface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(PROTInterface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(PROTInterface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new PROTInterface().setVisible(true);
}
});
}
//TCP/IP
public class ClientHandler implements Runnable{
BufferedReader reader;
Socket sock;
PrintWriter client;
public ClientHandler(Socket clientSocket, PrintWriter user) {
client = user;
try
{
sock = clientSocket;
InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(isReader);
}
catch (Exception ex)
{
TextArea_Protocols.append("Unexpected error... \n");
}
}
public void run() {
String message, connect = "Connect", disconnect = "Disconnect", chat = "Chat" ;
String[] data;
try
{
while ((message = reader.readLine()) != null){
TextArea_Protocols.append("Received: " + message + "\n");
data = message.split(":");
for (String token:data)
{
TextArea_Protocols.append(token + "\n");
}
if (data[2].equals(connect))
{
tcp_ip.tellEveryone((data[0] + ":" + data[1] + ":" + chat), TextArea_Protocols);
tcp_ip.userAdd(data[0], TextArea_Protocols);
}
else if (data[2].equals(disconnect))
{
tcp_ip.tellEveryone((data[0] + ":has disconnected." + ":" + chat), TextArea_Protocols);
tcp_ip.userRemove(data[0], TextArea_Protocols);
}
else if (data[2].equals(chat))
{
tcp_ip.tellEveryone(message, TextArea_Protocols);
}
else
{
TextArea_Protocols.append("No Conditions were met. \n");
}
}
}
catch (Exception ex)
{
TextArea_Protocols.append("Lost a connection. \n");
//ex.printStackTrace();
clientOutputStreams.remove(client);
}
}
}
public class ServerStart implements Runnable {
@Override
public void run()
{
clientOutputStreams = new ArrayList();
users = new ArrayList();
try
{
ServerSocket serverSock = new ServerSocket(Integer.parseInt(ComboBox_Protocols_Port.getSelectedItem().toString()));
while (true)
{
Socket clientSock = serverSock.accept();
PrintWriter writer = new PrintWriter(clientSock.getOutputStream());
clientOutputStreams.add(writer);
Thread listener = new Thread(new ClientHandler(clientSock, writer));
listener.start();
TextArea_Protocols.append("Got a connection. \n");
}
}
catch (NumberFormatException | IOException ex)
{
TextArea_Protocols.append("Error making a connection. \n");
}
}
}
//TCP/IP
答案 0 :(得分：-1)
*解决
经过一天的调查和努力工作:)我发现问题根本不是java的代码。
关键是以下内容！
BufferedReader.readLine（）
结果比BufferedReader有的methode readLine仅在缓冲区中发送了回车或通常称为\ r \ n时读取
无论如何我使用的程序是 TCP / IP Builder rev 1.9 ，但我发送的数据没有\ r \ n，在这个程序中你没有选择添加ASCII代码。
我使用Hercules解决了这个问题并测试了TCP通信，这很有效！
BufferReader.read（）
.read（）不需要\ r \ n但是它返回char的代码char，try catch语句不要让我包括这个选项。
奖励，我希望它对任何人都有用。
注意：
并非TCP / IP的所有通信外部程序都需要通过TCP进行\ r或\ n通信，这是.readList（）Java函数的特殊例外。