让用户输入文件名
我创建了一个界面,允许在 rdf 文件。我将文件路径放在 readRDFfile
参数中,并将相同的文件路径放在 Filewriter
中(以便在用户添加实例时更新文件)。但我想允许用户在执行代码时输入他想要创建的名称文件。当用户添加实例时,FileWriter 必须将此文件作为参数。
我的问题是,我不知道如何将用户选择的文件以及在 readRDFfile 中读取的文件放在 Filewriter 参数中,以便在添加实例时进行更新。
import java.util.*;
import java.util.List;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.ontology.*;
import com.hp.hpl.jena.ontology.impl.*;
import com.hp.hpl.jena.util.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.vocabulary.XSD;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
public class FamilyModel extends Frame
{
TextField[]tabTF=new TextField[4];
Button bAjout, bModifier, bSupprimer, bPrecedent, bSuivant, bValiderModif; //buttons Add, Remove, Previous, Next
OntModel model;
Onto onto;
int indice=0;
int p=0;
Resource p1;
Button creerBouton(String S, int x, int y)
{
Button b=new Button(S);
add(b);
b.setBounds(x,y,120,30);
return b;
}
void creerLabel(String etiquette, int x, int y)
{
Label la=new Label(etiquette);
la.setBounds(x,y,100,25);
add(la);
}
public FamilyModel ()
{
setLayout (null);
setBackground (Color.pink);
setBounds (100,200,900,450);
creerLabel("Prenom : ",10,50);
creerLabel("Nom : ",10,100);
creerLabel("Date de Naissance: ",10,145);
creerLabel("Genre (H ou F): ",10,190);
//TextFields
for(int i=0;i<4;i++)
{
tabTF[i]=new TextField("");
tabTF[i].setBackground(Color.white);
add(tabTF[i]);
}
tabTF[0].setBounds(120,45,150,25);
tabTF[1].setBounds(120,100,150,25);
tabTF[2].setBounds(120,145, 100,25);
tabTF[3].setBounds(120,190, 45,25);
bAjout=creerBouton("Ajouter",20,250);
setVisible(true);
bModifier=creerBouton("Modifier",138,250);
setVisible(true);
//bSupprimer=creerBouton("Supprimer",250,250);
//setVisible(true);
bPrecedent=creerBouton("Precedent",360,250);
bSuivant=creerBouton("Suivant",450,250);
bSupprimer=creerBouton("Supprimer",600,250);
setVisible(true);
onto = new Onto();
readRDFfile();
traitement(this);
}
void traitement(Frame fenetre)
{
bAjout.addActionListener(new ActionAjoutPersonne());
//bModifier.addActionListener(new ActionModifier());
//bValiderModif.addActionListener(new ActionModif());
bSuivant.addActionListener(new ActionSuivant());
bPrecedent.addActionListener(new ActionPrecedent());
bSupprimer.addActionListener(new ActionSupprimer());
}
//Button Add
public class ActionAjoutPersonne implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
p1=onto.model.createResource(onto.uriBase+"#"+tabTF[0].getText());
p1.addProperty(onto.aPourPrenom, tabTF[0].getText());
p1.addProperty(onto.aPourNom, tabTF[1].getText());
p1.addProperty(onto.aDateNaiss, tabTF[2].getText());
if (tabTF[3].getText().equals("F"))
{
p1.addProperty(onto.aGenre, tabTF[3].getText());
p1.addProperty(RDF.type, onto.femme);
}
else if (tabTF[3].getText().equals("H"))
{
p1.addProperty(onto.aGenre, tabTF[3].getText());
p1.addProperty(RDF.type, onto.homme);
}
StringWriter sw = new StringWriter();
onto.model.write(sw, "RDF/XML-ABBREV");
String owlCode = sw.toString();
File file = new File("d:/Onto.rdf");
try{
FileWriter fw = new FileWriter(file);
fw.write(owlCode);
fw.close();
} catch(FileNotFoundException fnfe){
fnfe.printStackTrace();}
catch(IOException ioe){
ioe.printStackTrace();
}
}
}
//Button Remove
public class ActionSupprimer implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
List<Statement> statementsToRemove = new ArrayList<Statement>();
StmtIterator iter = onto.model.listStatements();
while (iter.hasNext())
{
Statement stmt = iter.nextStatement();
Resource subject = stmt.getSubject();
Property predicate = stmt.getPredicate();
RDFNode object = stmt.getObject();
if(subject.toString().equals (onto.uriBase+"#"+tabTF[0].getText()))
{
statementsToRemove.add(stmt);
}
}
for( Statement stmt : statementsToRemove)
{
onto.model.remove(stmt);
}
StringWriter sw = new StringWriter();
onto.model.write(sw, "RDF/XML-ABBREV");
String owlCode = sw.toString();
File file = new File("d:/Onto.rdf");
try{
FileWriter fw = new FileWriter(file);
fw.write(owlCode);
fw.close();
} catch(FileNotFoundException fnfe){
fnfe.printStackTrace();}
catch(IOException ioe){
ioe.printStackTrace();
}
}
}
//Read Onto.rdf
public void readRDFfile()
{
String inputFile="D:/Onto.rdf";
try
{
InputStream in =new FileInputStream(inputFile);
if (in == null) {
System.out.println("File not found");
}
onto.model.read(in, null);
}catch(Exception e) {
System.out.println("model.read catched error: " + e);
}
}
//Button Next
class ActionSuivant implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
++indice;
ExtendedIterator instances = onto.personne.listInstances();
Individual instance = null;
Individual firstInstance = null;
for (p = 0; p < indice && instances.hasNext(); p++) {
instance = (Individual) instances.next();
if (firstInstance == null) {
firstInstance = instance;
}
}
if (p < indice) {
indice = 1;
instance = firstInstance;
}
tabTF[0].setText(instance.getPropertyValue(onto.aPourPrenom).toString());
tabTF[1].setText(instance.getPropertyValue(onto.aPourNom).toString());
tabTF[2].setText(instance.getPropertyValue(onto.aDateNaiss).toString());
tabTF[3].setText(instance.getPropertyValue(onto.aGenre).toString());
}
}
class ActionPrecedent implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
--indice;
//Instances de la Classe Personne
ExtendedIterator instances=onto.personne.listInstances();
Individual instance = null;
for(p = 0; p < indice && instances.hasNext(); p++)
{
instance = (Individual) instances.next();
}
tabTF[0].setText(instance.getPropertyValue(onto.aPourPrenom).toString());
tabTF[1].setText(instance.getPropertyValue(onto.aPourNom).toString());
tabTF[2].setText(instance.getPropertyValue(onto.aDateNaiss).toString());
tabTF[3].setText(instance.getPropertyValue(onto.aGenre).toString());
}
}
//Ontology
public class Onto
{
OntClass personne, genre, homme, femme, feminin, masculin, evenement, deces, mariage, divorce;
OntModel model;
String uriBase;
ObjectProperty aPourFils, aPourFille, aGenre;
DatatypeProperty aPourNom, aPourPrenom, aDateNaiss;
public Onto (){
model = ModelFactory.createOntologyModel( OntModelSpec.OWL_MEM_MICRO_RULE_INF );
uriBase = "http://www.something.com/FAM";
model.createOntology(uriBase);
//Classes
personne = model.createClass(uriBase+"personne");
femme = model.createClass(uriBase+"femme");
homme = model.createClass(uriBase+"homme");
genre = model.createClass(uriBase+"genre");
feminin = model.createClass(uriBase+"feminin");
masculin = model.createClass(uriBase+"masculin");
evenement = model.createClass(uriBase+"evenement");
deces = model.createClass(uriBase+"deces");
mariage = model.createClass(uriBase+"mariage");
divorce = model.createClass(uriBase+"divorce");
//Sub-classes
genre.addSubClass(feminin);
genre.addSubClass(masculin);
personne.addSubClass(homme);
personne.addSubClass(femme);
evenement.addSubClass(deces);
evenement.addSubClass(mariage);
evenement.addSubClass(divorce);
aPourFils = model.createObjectProperty(uriBase+"aPourFils");
aPourFils.setDomain(personne);
aPourFils.setRange(homme);
aPourFille = model.createObjectProperty(uriBase+"aPourFille");
aPourFille.setDomain(personne);
aPourFille.setRange(femme);
aGenre = model.createObjectProperty(uriBase+"aGenre");
aGenre.setDomain(personne);
aGenre.setRange(genre);
aPourNom = model.createDatatypeProperty(uriBase+"aPourNom");
aPourNom.setDomain(personne);
aPourNom.setRange(XSD.xstring);
aPourPrenom = model.createDatatypeProperty(uriBase+"aPourPrenom");
aPourPrenom.setDomain(personne);
aPourPrenom.setRange(XSD.xstring);
aDateNaiss = model.createDatatypeProperty(uriBase+"aDateNaiss");
aDateNaiss.setDomain(personne);
aDateNaiss.setRange(XSD.xstring);
}
}
public static void main(String args[])
{
new FamilyModel();
}
}
I created an interface that allows to add instances in an rdf file. I put the filepath in the readRDFfile
parameter and the same filepath in Filewriter
(in order to update the file when user add instances). But i'd like to allow user enter the name file he want to create when I execute the code. And FileWriter must take this file in parameter when user add instances.
My problem is that I don't know how to put the file that user has chosen and that was read in readRDFfile, in Filewriter parameter in order to be updated when he adds instances.
import java.util.*;
import java.util.List;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.ontology.*;
import com.hp.hpl.jena.ontology.impl.*;
import com.hp.hpl.jena.util.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.vocabulary.XSD;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
public class FamilyModel extends Frame
{
TextField[]tabTF=new TextField[4];
Button bAjout, bModifier, bSupprimer, bPrecedent, bSuivant, bValiderModif; //buttons Add, Remove, Previous, Next
OntModel model;
Onto onto;
int indice=0;
int p=0;
Resource p1;
Button creerBouton(String S, int x, int y)
{
Button b=new Button(S);
add(b);
b.setBounds(x,y,120,30);
return b;
}
void creerLabel(String etiquette, int x, int y)
{
Label la=new Label(etiquette);
la.setBounds(x,y,100,25);
add(la);
}
public FamilyModel ()
{
setLayout (null);
setBackground (Color.pink);
setBounds (100,200,900,450);
creerLabel("Prenom : ",10,50);
creerLabel("Nom : ",10,100);
creerLabel("Date de Naissance: ",10,145);
creerLabel("Genre (H ou F): ",10,190);
//TextFields
for(int i=0;i<4;i++)
{
tabTF[i]=new TextField("");
tabTF[i].setBackground(Color.white);
add(tabTF[i]);
}
tabTF[0].setBounds(120,45,150,25);
tabTF[1].setBounds(120,100,150,25);
tabTF[2].setBounds(120,145, 100,25);
tabTF[3].setBounds(120,190, 45,25);
bAjout=creerBouton("Ajouter",20,250);
setVisible(true);
bModifier=creerBouton("Modifier",138,250);
setVisible(true);
//bSupprimer=creerBouton("Supprimer",250,250);
//setVisible(true);
bPrecedent=creerBouton("Precedent",360,250);
bSuivant=creerBouton("Suivant",450,250);
bSupprimer=creerBouton("Supprimer",600,250);
setVisible(true);
onto = new Onto();
readRDFfile();
traitement(this);
}
void traitement(Frame fenetre)
{
bAjout.addActionListener(new ActionAjoutPersonne());
//bModifier.addActionListener(new ActionModifier());
//bValiderModif.addActionListener(new ActionModif());
bSuivant.addActionListener(new ActionSuivant());
bPrecedent.addActionListener(new ActionPrecedent());
bSupprimer.addActionListener(new ActionSupprimer());
}
//Button Add
public class ActionAjoutPersonne implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
p1=onto.model.createResource(onto.uriBase+"#"+tabTF[0].getText());
p1.addProperty(onto.aPourPrenom, tabTF[0].getText());
p1.addProperty(onto.aPourNom, tabTF[1].getText());
p1.addProperty(onto.aDateNaiss, tabTF[2].getText());
if (tabTF[3].getText().equals("F"))
{
p1.addProperty(onto.aGenre, tabTF[3].getText());
p1.addProperty(RDF.type, onto.femme);
}
else if (tabTF[3].getText().equals("H"))
{
p1.addProperty(onto.aGenre, tabTF[3].getText());
p1.addProperty(RDF.type, onto.homme);
}
StringWriter sw = new StringWriter();
onto.model.write(sw, "RDF/XML-ABBREV");
String owlCode = sw.toString();
File file = new File("d:/Onto.rdf");
try{
FileWriter fw = new FileWriter(file);
fw.write(owlCode);
fw.close();
} catch(FileNotFoundException fnfe){
fnfe.printStackTrace();}
catch(IOException ioe){
ioe.printStackTrace();
}
}
}
//Button Remove
public class ActionSupprimer implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
List<Statement> statementsToRemove = new ArrayList<Statement>();
StmtIterator iter = onto.model.listStatements();
while (iter.hasNext())
{
Statement stmt = iter.nextStatement();
Resource subject = stmt.getSubject();
Property predicate = stmt.getPredicate();
RDFNode object = stmt.getObject();
if(subject.toString().equals (onto.uriBase+"#"+tabTF[0].getText()))
{
statementsToRemove.add(stmt);
}
}
for( Statement stmt : statementsToRemove)
{
onto.model.remove(stmt);
}
StringWriter sw = new StringWriter();
onto.model.write(sw, "RDF/XML-ABBREV");
String owlCode = sw.toString();
File file = new File("d:/Onto.rdf");
try{
FileWriter fw = new FileWriter(file);
fw.write(owlCode);
fw.close();
} catch(FileNotFoundException fnfe){
fnfe.printStackTrace();}
catch(IOException ioe){
ioe.printStackTrace();
}
}
}
//Read Onto.rdf
public void readRDFfile()
{
String inputFile="D:/Onto.rdf";
try
{
InputStream in =new FileInputStream(inputFile);
if (in == null) {
System.out.println("File not found");
}
onto.model.read(in, null);
}catch(Exception e) {
System.out.println("model.read catched error: " + e);
}
}
//Button Next
class ActionSuivant implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
++indice;
ExtendedIterator instances = onto.personne.listInstances();
Individual instance = null;
Individual firstInstance = null;
for (p = 0; p < indice && instances.hasNext(); p++) {
instance = (Individual) instances.next();
if (firstInstance == null) {
firstInstance = instance;
}
}
if (p < indice) {
indice = 1;
instance = firstInstance;
}
tabTF[0].setText(instance.getPropertyValue(onto.aPourPrenom).toString());
tabTF[1].setText(instance.getPropertyValue(onto.aPourNom).toString());
tabTF[2].setText(instance.getPropertyValue(onto.aDateNaiss).toString());
tabTF[3].setText(instance.getPropertyValue(onto.aGenre).toString());
}
}
class ActionPrecedent implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
--indice;
//Instances de la Classe Personne
ExtendedIterator instances=onto.personne.listInstances();
Individual instance = null;
for(p = 0; p < indice && instances.hasNext(); p++)
{
instance = (Individual) instances.next();
}
tabTF[0].setText(instance.getPropertyValue(onto.aPourPrenom).toString());
tabTF[1].setText(instance.getPropertyValue(onto.aPourNom).toString());
tabTF[2].setText(instance.getPropertyValue(onto.aDateNaiss).toString());
tabTF[3].setText(instance.getPropertyValue(onto.aGenre).toString());
}
}
//Ontology
public class Onto
{
OntClass personne, genre, homme, femme, feminin, masculin, evenement, deces, mariage, divorce;
OntModel model;
String uriBase;
ObjectProperty aPourFils, aPourFille, aGenre;
DatatypeProperty aPourNom, aPourPrenom, aDateNaiss;
public Onto (){
model = ModelFactory.createOntologyModel( OntModelSpec.OWL_MEM_MICRO_RULE_INF );
uriBase = "http://www.something.com/FAM";
model.createOntology(uriBase);
//Classes
personne = model.createClass(uriBase+"personne");
femme = model.createClass(uriBase+"femme");
homme = model.createClass(uriBase+"homme");
genre = model.createClass(uriBase+"genre");
feminin = model.createClass(uriBase+"feminin");
masculin = model.createClass(uriBase+"masculin");
evenement = model.createClass(uriBase+"evenement");
deces = model.createClass(uriBase+"deces");
mariage = model.createClass(uriBase+"mariage");
divorce = model.createClass(uriBase+"divorce");
//Sub-classes
genre.addSubClass(feminin);
genre.addSubClass(masculin);
personne.addSubClass(homme);
personne.addSubClass(femme);
evenement.addSubClass(deces);
evenement.addSubClass(mariage);
evenement.addSubClass(divorce);
aPourFils = model.createObjectProperty(uriBase+"aPourFils");
aPourFils.setDomain(personne);
aPourFils.setRange(homme);
aPourFille = model.createObjectProperty(uriBase+"aPourFille");
aPourFille.setDomain(personne);
aPourFille.setRange(femme);
aGenre = model.createObjectProperty(uriBase+"aGenre");
aGenre.setDomain(personne);
aGenre.setRange(genre);
aPourNom = model.createDatatypeProperty(uriBase+"aPourNom");
aPourNom.setDomain(personne);
aPourNom.setRange(XSD.xstring);
aPourPrenom = model.createDatatypeProperty(uriBase+"aPourPrenom");
aPourPrenom.setDomain(personne);
aPourPrenom.setRange(XSD.xstring);
aDateNaiss = model.createDatatypeProperty(uriBase+"aDateNaiss");
aDateNaiss.setDomain(personne);
aDateNaiss.setRange(XSD.xstring);
}
}
public static void main(String args[])
{
new FamilyModel();
}
}
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(2)
如果您的应用程序有 GUI,选择输入文件的标准方法是使用文件选择器,例如 JFileChooser 如果您的应用程序基于 Swing,或者 FileDialog 如果您想坚持使用 AWT 组件。
以下是 JFileChooser 的示例:
JFileChooser 教程:
http://download.oracle.com/javase/tutorial/uiswing/components /filechooser.html
如果您的应用程序是基于命令行的(我从处理按钮点击的代码中收集到的情况并非如此),则可以在运行应用程序时将输入作为命令行参数之一,你呢可以从传递给 main() 的 args[] 数组中读取它。
If your app has a GUI, the standard way to select an input file would be to use a file chooser, for example JFileChooser if your app is Swing based, or FileDialog if you want to stick to AWT components.
Here is an exmaple for JFileChooser:
JFileChooser Tutorial:
http://download.oracle.com/javase/tutorial/uiswing/components/filechooser.html
If your app is command line based (which I gather it not the case from your code for handling button clicks), you could make the input be one of the command line arguments when you run the app, and you could read it out of args[] array passed into main().
关于如何从用户获取数据有很多选择和思想流派。这大部分取决于用户是谁以及他们将如何与该程序交互。我列出了一些。
标准输入 如果您只想让程序暂停并在控制台上提示用户而不需要额外的功能,请在 main 中使用此选项(如果您使用
控制台 con = System.console();
String file = con.readLine("文件名: ");
There are many options and schools of thought regarding how to get data from the user. Most of this depends on who the user will be and how they are going to be interacting with this program. A couple I've listed.
Standard In If you just want the program to pause and prompt the user on the console with no bells or whistles use this in main (if you using
Console con = System.console();
String file = con.readLine("File Name: ");