Swing简单的文件上传



package com.iss.iaf.codemanagement;

import javax.swing.JOptionPane;

/**
 * 代码管理应用程序--项目的入口
 * @author xinzhangah
 * @data 2016-12-02
 *
 */
public class JFrameMain {
 /**
  * @param args
  */
 public static void main(String[] args) {
  Object[] possibleValues = {"开发人员", "测试人员/客户/现场" };
  Object selectedValue =JOptionPane.showInputDialog(null, "请选择身份角色：",
    "选择角色：", JOptionPane.INFORMATION_MESSAGE, null, possibleValues,
    possibleValues[0]);
  if("开发人员".equals(selectedValue)){
   new UpLoad().UpLoadFile("上传文件",selectedValue);
  }
  
 }

}

package com.iss.iaf.codemanagement;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashSet;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import javax.swing.SwingConstants;
import javax.swing.WindowConstants;
import javax.swing.filechooser.FileNameExtensionFilter;

public class UpLoad {

 public void UpLoadFile(String title, Object selectedValue) {
  JFrame jframe = new JFrame(title);// 实例化一个JFrame
  JPanel jPanel = new JPanel(); // 创建一个轻量级容器
  JToolBar jToolBar = new JToolBar(); // 提供了一个用来显示常用的 Action 或控件的组件
  jframe.setVisible(true);// 可见
  jframe.setSize(500, 500);// 窗体大小
  jframe.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);// close的方式
  jframe.setContentPane(jPanel); // 设置 contentPane 属性。
  JLabel jl = new JLabel("请选择：");// 创建一个Label标签
  jl.setHorizontalAlignment(SwingConstants.LEFT);// 样式，让文字居中
  jPanel.add("North", jl);// 将标签添加到容器中
  jPanel.add("North", jToolBar);
  JButton developer = new JButton("上传文件");
  developer.setHorizontalAlignment(SwingConstants.CENTER);
  jToolBar.add(developer);// 上传文件按钮添加到容器
  jPanel.add("North", jToolBar);
  developer.addMouseListener(new MouseAdapter() { // 添加鼠标点击事件
     public void mouseClicked(MouseEvent event) {
      eventOnImport(new JButton());
     }
    }); // 文件上传功能
 }

 /**
  * 文件上传功能
  *
  * @param developer
  *            按钮控件名称
  */
 public static void eventOnImport(JButton developer) {
  JFileChooser chooser = new JFileChooser();
  chooser.setMultiSelectionEnabled(true);
  /** 过滤文件类型 * */
  FileNameExtensionFilter filter = new FileNameExtensionFilter("war",
    "xml", "txt", "doc", "docx");
  chooser.setFileFilter(filter);
  int returnVal = chooser.showOpenDialog(developer);
  if (returnVal == JFileChooser.APPROVE_OPTION) {
   /** 得到选择的文件* */
   File[] arrfiles = chooser.getSelectedFiles();
   if (arrfiles == null || arrfiles.length == 0) {
    return;
   }
   FileInputStream input = null;
   FileOutputStream out = null;
   String path = "./";
   try {
    for (File f : arrfiles) {
     File dir = new File(path);
     /** 目标文件夹 * */
     File[] fs = dir.listFiles();
     HashSet<String> set = new HashSet<String>();
     for (File file : fs) {
      set.add(file.getName());
     }
     /** 判断是否已有该文件* */
     if (set.contains(f.getName())) {
      JOptionPane.showMessageDialog(new JDialog(),
        f.getName() + ":该文件已存在！");
      return;
     }
     input = new FileInputStream(f);
     byte[] buffer = new byte[1024];
     File des = new File(path, f.getName());
     out = new FileOutputStream(des);
     int len = 0;
     while (-1 != (len = input.read(buffer))) {
      out.write(buffer, 0, len);
     }
     out.close();
     input.close();
    }
    JOptionPane.showMessageDialog(null, "上传成功！", "提示",
      JOptionPane.INFORMATION_MESSAGE);

   } catch (FileNotFoundException e1) {
    JOptionPane.showMessageDialog(null, "上传失败！", "提示",
      JOptionPane.ERROR_MESSAGE);
    e1.printStackTrace();
   } catch (IOException e1) {
    JOptionPane.showMessageDialog(null, "上传失败！", "提示",
      JOptionPane.ERROR_MESSAGE);
    e1.printStackTrace();
   }
  }
 }

}