文件切割合并器 3 合并类Merge

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明明如月学长 2021-08-07 10:17:56 ©著作权

文章标签 java ico 文件合并配置信息目标文件 文章分类 Java 后端开发

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import java.awt.BorderLayout;

import java.awt.FlowLayout;

import java.awt.GridBagLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.SequenceInputStream;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Enumeration;

import java.util.Properties;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

//用于切割后的文件合并

public class Merge extends InitFrame{

private static final long serialVersionUID = 1L;

public Merge()

{

super("文件合并","file_split.png",440,200);

initGUI();

this.setDefaultCloseOperation (JFrame.DISPOSE_ON_CLOSE);

this.setVisible(true);

}

//初始化界面

public void initGUI() {

// 设置布局管理器

this.setLayout(new BorderLayout());

this.setResizable(false);

// 设置面板

northPanel = new JPanel();

southPanel = new JPanel();

// 设置面板布局

northPanel.setLayout(new GridBagLayout());

southPanel.setLayout(new FlowLayout());

// 将面板添加进窗体

this.add(northPanel,BorderLayout.CENTER);

this.add(southPanel,BorderLayout.SOUTH);

// 设置北部面板

label_1 = new JLabel("切割文件所在目录：");

label_2 = new JLabel("请选择目标文件夹：");

field_1 = new JTextField(20);

field_2 = new JTextField(20);

button_1 = new JButton("选择",new ImageIcon(Merge.class.getResource("/resources/open.png")));

button_1.addActionListener(listener);

button_2 = new JButton("选择",new ImageIcon(Merge.class.getResource("/resources/open.png")));

button_2.addActionListener(listener);

northPanel.add(label_1,new GBC(0,0).setInsets(1));

northPanel.add(field_1,new GBC(1,0).setInsets(1));

northPanel.add(button_1,new GBC(2,0).setInsets(1));

northPanel.add(label_2,new GBC(0,1).setInsets(1));

northPanel.add(field_2,new GBC(1,1).setInsets(1));

northPanel.add(button_2,new GBC(2,1).setInsets(1));

// 设置南部面板

button_Merge= new JButton(" 合并 ",new ImageIcon(Merge.class.getResource("/resources/merge.png")));

button_Merge.addActionListener(listener);

button_open = new JButton("打开目标文件夹",new ImageIcon(Merge.class.getResource("/resources/open_dir.png")));

button_open.addActionListener(listener);

southPanel.add(button_Merge);

southPanel.add(button_open);

this.setVisible(true);

}

private class ChoiceListener implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

if(e.getSource().equals(button_1))

{

JFileChooser chooser = new JFileChooser();

// 只许选择文件夹

chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);

// 不允许同时选中多个文件夹

chooser.setMultiSelectionEnabled (false);

int returnVal = chooser.showOpenDialog(Merge.this);

if(returnVal == JFileChooser.APPROVE_OPTION) {

// 获取选择的文件

dir_source= chooser.getSelectedFile();

// 获取的文件名

dirName = dir_source.getAbsolutePath();

// 将获取的源文件名显示

field_1.setText(dirName);

}

}else if(e.getSource().equals(button_2))

{

JFileChooser chooser = new JFileChooser();

// 只许选择文件夹

chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);

// 不允许同时选中多个文件夹

chooser.setMultiSelectionEnabled (false);

int returnVal = chooser.showOpenDialog(Merge.this);

if(returnVal == JFileChooser.APPROVE_OPTION) {

// 获取选择的目标文件夹

dir_des= chooser.getSelectedFile();

// 将获取的目标文件名显示

field_2.setText(dir_des.getAbsolutePath());

}

}else if(e.getSource().equals(button_Merge))

{

MergeFiles(dir_source,dir_des);

}else if(e.getSource().equals(button_open))

{

// 获取目标文件目录路径

String dir_path = dir_des.getAbsolutePath();

// 打开目标文件目录

Runtime r = Runtime.getRuntime();

try {

r.exec("cmd.exe /c start "+dir_path);

} catch (IOException e1) {

// 打开存放切割目录失败是给予提示

JLabel label_result = new JLabel("打开目标目录失败！！");

JOptionPane.showConfirmDialog(Merge.this, label_result,"文件合并-打开目录", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Merge.class.getResource("/resources/null.png")));

}

private void MergeFiles(File dir_source, File dir_des)

{

File [] fileinfo = dir_source.listFiles(new SuffixFilter(".properties"));

// 当配置信息为0个或者两个或者两个以上时，无法进行判断，给出提示信息

if(fileinfo.length!=1)

{

JLabel label_result = new JLabel("无配置信息，或者配置信息不唯一，无法合并文件！！");

JOptionPane.showConfirmDialog(Merge.this, label_result,"文件合并-错误提示", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Merge.class.getResource("/resources/null.png")));

} else{

// 获取配置信息

Properties prop = new Properties();

try {

FileInputStream fis = new FileInputStream(fileinfo[0]);

// 将配置信息加载到流中

prop.load(fis);

// 获取文件名和截取片段个数

filename = prop.getProperty("filename");

int count = Integer.parseInt(prop.getProperty("splitcount"));

File [] files = dir_source.listFiles(new SuffixFilter(".split"));

System.out.println(count-1);

System.out.println(files.length);

if(files.length!=(count-1))

{

JLabel label_result = new JLabel("截取片段数目无效，应该是"+(count-1)+"个！！");

}else{

// 定义泛型集合将切割后的文件和刘相关联并存储到几个里

ArrayList<FileInputStream > arraylist = new ArrayList<FileInputStream >();

for(int i= 0;i< files.length;i++)

{

arraylist.add(new FileInputStream(files[i]));

}

// 将数个流合并成一个流

Enumeration< FileInputStream> enumer = Collections.enumeration(arraylist);

SequenceInputStream sis = new SequenceInputStream(enumer);

// 定义输出流

FileOutputStream fos = new FileOutputStream(new File(dir_des,filename));

byte [] buf = new byte[1024*1024];

int len =0;

// 按每次1M写入文件

while((len= sis.read(buf))!=-1)

{

fos.write(buf, 0, len);

}

// 关闭流

fos.close();

sis.close();

JLabel label_result = new JLabel("已经成功将切割文件合并到目标文件夹！！");

JOptionPane.showConfirmDialog(Merge.this, label_result,"文件合并-成功提示", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Merge.class.getResource("/resources/succes.png")));

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

private ChoiceListener listener = new ChoiceListener();

private JPanel northPanel;

private JPanel southPanel;

private JLabel label_1;

private JLabel label_2;

private JTextField field_1;