在批量转换文件文件之前设置转换后文件存取目录目录

Question

我写了个程序批量读取pdf文件到word中，现在的问题是在批量转换之前我要用户指定转换后文件的存放目录，这个用JChooser可以实现吗，我用如下代码:
[code="java"]fileDirectory=new JFileChooser();
int returnVal = fileDirectory.showSaveDialog(this);
System.out.println("returnVal:"+returnVal);
if(returnVal == fileDirectory.APPROVE_OPTION) {
saveDirectory=fileDirectory.getCurrentDirectory().toString();
System.out.println("choose the dictory is :"+saveDirectory);
}[/code]
但是对话框出来后，若没有选择文件，只是选择目录点击保存没有任何响应。

Answer 1

你需要设置 SelectionMode: chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
参见示例代码

[code="java"]
package com.xan.fortest;

import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class SwingTester extends JPanel implements ActionListener {
private static final long serialVersionUID = 4537424836172729931L;

JButton go;

JFileChooser chooser;
private final static String chooserTitle = "Folder Chooser";

public SwingTester() {
    go = new JButton("Choose Folder");
    go.addActionListener(this);
    add(go);
}

public void actionPerformed(ActionEvent e) {
    chooser = new JFileChooser();
    chooser.setCurrentDirectory(new java.io.File("."));
    chooser.setDialogTitle(chooserTitle);

    /******  SHOULD SET THIS **********/
    chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    //
    // disable the "All files" option.
    //
    chooser.setAcceptAllFileFilterUsed(false);
    //    
    if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
        System.out.println("getCurrentDirectory(): "
                + chooser.getCurrentDirectory());
        System.out.println("getSelectedFile() : "
                + chooser.getSelectedFile());
    } else {
        System.out.println("No Selection ");
    }
}

public Dimension getPreferredSize() {
    return new Dimension(400, 400);
}

public static void main(String s[]) {
    JFrame frame = new JFrame("");
    SwingTester panel = new SwingTester();
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    });
    frame.getContentPane().add(panel, "Center");
    frame.setSize(panel.getPreferredSize());
    frame.setVisible(true);
}

}
[/code]