Llenar un jtree desde mysql
Publicado por Fox (1 intervención) el 19/12/2014 13:41:55
Hola, este es mi primer post aca... estoy empezando a desarrollar una app en java swing, y estoy complicado tratando de colocar datos en un jtree. El problema lo tengo al querer hacer otro nodo en el arbol... esta es la vista de donde saco los datos.
Este codigo funciona, pero no se como agregar otro nodo que sea hijo de Provincia para agregar las localidades....
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ID CP Localidad "Cod Area" Provincia Pais "Cod DDI"
4 2000 Rosario 0341 "Santa Fe" Argentina +054
5 2200 "San Lorenzo" 03471 "Santa Fe" Argentina +054
6 5000 Cordoba 0351 Cordoba Argentina +054Este codigo funciona, pero no se como agregar otro nodo que sea hijo de Provincia para agregar las localidades....
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public class PaisProvLoc_Informe extends javax.swing.JFrame {
/**
* Creates new form PaisProvLoc_Informe
*/Conexion conexion = new Conexion();
Connection con = conexion.abrirConexion();
Statement st = null;public PaisProvLoc_Informe() {
initComponents();
llena_Tree();
}public final void llena_Tree() {
try {ArrayList list = new ArrayList();
list.add("Arbol Pais / Provincia / Localidades");
st = con.createStatement();
ResultSet rs = st.executeQuery("SELECT `Pais` FROM monarca.view_localidades;");
while (rs.next()) {
Object value[] = {rs.getString(1)};
list.add(value);
}Object hierarchy[] = list.toArray();
DefaultMutableTreeNode root = processHierarchy(hierarchy);
DefaultTreeModel treeModel = new DefaultTreeModel(root);
jTree.setModel(treeModel);
} catch (Exception e) {
JOptionPane.showMessageDialog(null,"Error"+ e.getMessage());
} }public DefaultMutableTreeNode processHierarchy(Object[] hierarchy) {
DefaultMutableTreeNode node = new DefaultMutableTreeNode(hierarchy[0]);
try { int ctrow = 0; int i = 0; try {ResultSet rs1 = st.executeQuery("SELECT `Pais`, `Cod DDI` FROM monarca.view_localidades GROUP BY `Pais`, `Cod DDI`;");
while (rs1.next()) {
ctrow = rs1.getRow();
}String L1Pais[] = new String[ctrow];
String L1CodDDI[] = new String[ctrow];
ResultSet rs2 = st.executeQuery("SELECT `Pais`, `Cod DDI` FROM monarca.view_localidades GROUP BY `Pais`, `Cod DDI`;");
while (rs2.next()) {
L1Pais[i] = rs2.getString("Pais");
L1CodDDI[i] = rs2.getString("Cod DDI");
i++;
} DefaultMutableTreeNode Node1, Node2;for (int Node1Index = 0; Node1Index < L1Pais.length; Node1Index++) {
Node1 = new DefaultMutableTreeNode(L1Pais[Node1Index]+" "+L1CodDDI[Node1Index]);
node.add(Node1);
ResultSet rs5 = st.executeQuery("SELECT `Provincia` FROM monarca.view_localidades where Pais= '" + L1Pais[Node1Index] + "' "
+ "GROUP BY `Provincia`");
while (rs5.next()) {
Node2 = new DefaultMutableTreeNode(rs5.getString("Provincia"));
Node1.add(Node2);
} }} catch (Exception e) { }
} catch (Exception e) { }
return (node);
} /**
* 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() {
jPanel = new javax.swing.JPanel();
jScrollPane = new javax.swing.JScrollPane();
jTree = new javax.swing.JTree();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("Vista en Pantalla");
jPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(""));
jScrollPane.setViewportView(jTree);
javax.swing.GroupLayout jPanelLayout = new javax.swing.GroupLayout(jPanel);
jPanel.setLayout(jPanelLayout);
jPanelLayout.setHorizontalGroup(
jPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane, javax.swing.GroupLayout.DEFAULT_SIZE, 684, Short.MAX_VALUE)
);jPanelLayout.setVerticalGroup(
jPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanelLayout.createSequentialGroup()
.addComponent(jScrollPane, javax.swing.GroupLayout.PREFERRED_SIZE, 279, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 6, Short.MAX_VALUE))
);javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 56, Short.MAX_VALUE))
);pack();
}// </editor-fold>
/**
* @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(PaisProvLoc_Informe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(PaisProvLoc_Informe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(PaisProvLoc_Informe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(PaisProvLoc_Informe.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 PaisProvLoc_Informe().setVisible(true);
}});
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