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我已經知道顯示select * from和bla bla這樣的表的結果的代碼。 但我想顯示任何從MySQL到NetBeans的結果。 例如 - 如果用戶說「顯示數據庫」，它應該在textarea中顯示數據庫，對於表格也是如此。 我的意思是，無論用戶想看什麼，無論是查看錶或數據庫還是列或什麼，結果都應該顯示在textarea中。 而且我可能無法繼續爲這些行爲編寫命令，因爲有這麼多的可能性。 那麼請，有沒有什麼辦法可以將所有的結果從mysql顯示到java中的textarea中？ 謝謝。如何顯示mysql中的任何結果到TextArea中Java
編輯： 那麼......我netbeans（是的，我對這個東西有點新），到目前爲止，這是我的代碼。我希望結果顯示在文本區域中。下面是編碼在textarea的框架存在，我想結果出現─>
package MYSQL_GUI;
import static MYSQL_GUI.Frame1.j;
import static MYSQL_GUI.Frame1.k;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class CustComm extends javax.swing.JFrame {
/**
* Creates new form CustComm
*/
public CustComm() {
initComponents();
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation(dim.width/2-this.getSize().width/2, dim.height/2-this.getSize().height/2);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea2 = new javax.swing.JTextArea();
jLabel2 = new javax.swing.JLabel();
jScrollPane3 = new javax.swing.JScrollPane();
jTextArea3 = new javax.swing.JTextArea();
jLabel3 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("MySQL Custom Command Editor");
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel1.setText("Enter Custom Commands Below");
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
jButton1.setText("Execute Command(s)");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("Cancel");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jTextArea2.setEditable(false);
jTextArea2.setColumns(20);
jTextArea2.setLineWrap(true);
jTextArea2.setRows(2);
jTextArea2.setText("!!Separate commands by writing each command in new line with proper syntax just like in MySQL.");
jTextArea2.setFocusable(false);
jTextArea2.setHighlighter(null);
jTextArea2.setOpaque(false);
jScrollPane2.setViewportView(jTextArea2);
jLabel2.setText("Enter Command(s) below:");
jTextArea3.setEditable(false);
jTextArea3.setColumns(10);
jTextArea3.setRows(5);
jScrollPane3.setViewportView(jTextArea3);
jLabel3.setText("Command Outputs:");
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)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 600, Short.MAX_VALUE)
.addComponent(jScrollPane1)))
.addGroup(layout.createSequentialGroup()
.addGap(247, 247, 247)
.addComponent(jLabel2)))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 164, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jLabel3)
.addGap(40, 40, 40))))
.addGroup(layout.createSequentialGroup()
.addGap(222, 222, 222)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addGap(122, 122, 122)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(95, 95, 95)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 26, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane2, 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.BASELINE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 21, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.DEFAULT_SIZE, 240, Short.MAX_VALUE)
.addComponent(jScrollPane1))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2))
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
String x = jTextArea1.getText();
Scanner scanner = new Scanner(x);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
if(line.contains("use ")){
if(line.contains("use ")&&!GlobalParams.usedb){
JOptionPane.showMessageDialog(this, "Please use the Program to select database.");
}
else{
try{
Class.forName("java.sql.DriverManager");
Connection con = (Connection)
DriverManager.getConnection("jdbc:mysql://localhost:"+GlobalParams.portvar+"/",GlobalParams.uservar, GlobalParams.passvar);
Statement stmnt = (Statement) con.createStatement();
String query = line;
stmnt.executeUpdate(query);
JOptionPane.showMessageDialog(this, "Commands Executed Successfully");
this.dispose();}
catch(Exception e){
JOptionPane.showMessageDialog(this,e.getMessage());
}
}}
if(line.contains("create table ")){
if(line.contains("create table ")&&!GlobalParams.usedb){
JOptionPane.showMessageDialog(this, "You can only create tables and manipulate them in next section");
}
else{
try{
Class.forName("java.sql.DriverManager");
Connection con = (Connection)
DriverManager.getConnection("jdbc:mysql://localhost:"+GlobalParams.portvar+"/",GlobalParams.uservar, GlobalParams.passvar);
Statement stmnt = (Statement) con.createStatement();
String query = line;
stmnt.executeQuery("use "+GlobalParams.dbvar);
stmnt.executeUpdate(query);
JOptionPane.showMessageDialog(this, "Commands Executed Successfully");
this.dispose();}
catch(Exception e){
JOptionPane.showMessageDialog(this,e.getMessage());
}
}}
else{
try{
Class.forName("java.sql.DriverManager");
Connection con = (Connection)
DriverManager.getConnection("jdbc:mysql://localhost:"+GlobalParams.portvar+"/",GlobalParams.uservar, GlobalParams.passvar);
Statement stmnt = (Statement) con.createStatement();
String query = line;
stmnt.executeUpdate(query);
JOptionPane.showMessageDialog(this, "Commands Executed Successfully");
this.dispose();}
catch(Exception e){
JOptionPane.showMessageDialog(this,e.getMessage());
}}}
try{
Class.forName("java.sql.DriverManager");
Connection con = (Connection)
DriverManager.getConnection("jdbc:mysql://localhost:"+GlobalParams.portvar+"/",""+k,""+j);
Statement stmnt = (Statement) con.createStatement();
String query = "show databases";
ResultSet rs = stmnt.executeQuery(query);
while (rs.next()){
String db = rs.getString("Database");
}
}
catch(Exception e){
JOptionPane.showMessageDialog(this,e.getMessage());
}
GlobalParams.usedb=false;
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
int dialogResult = JOptionPane.showConfirmDialog (this, "You may loose your commands if you did not execute them. Are you sure you want to Proceed?");
if(dialogResult == JOptionPane.YES_OPTION){dispose();}
else{};
}
/**
* @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(CustComm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(CustComm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(CustComm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(CustComm.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 CustComm().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JScrollPane jScrollPane3;
public static javax.swing.JTextArea jTextArea1;
private javax.swing.JTextArea jTextArea2;
private javax.swing.JTextArea jTextArea3;
// End of variables declaration
}
這是編碼只有一個框架在那裏我希望有我的目的。 這裏是我完整的主框架編碼，以防萬一你需要它（我不認爲你會但仍然....） - >http://pastebin.com/ewnEpt8P#它太長，所以我不能在這裏發表。
簡答：是的。長答案：是的，但你必須做一些事情。你有沒有爲此目標而做過的事情？ – Makoto
我準備好做「我需要的東西」。我搜索谷歌，但沒有太大的幫助。所以請給我一個解決方案。 – Hoobla
我不會直接寫給你。你有沒有執行過的任何代碼？把這個問題放在你的問題上會有很大的幫助，因爲我們可以爲你提供一個起點。 – Makoto