本文已参与「新人创作礼」活动，一起开启掘金创作之路。
功能代码
@requires_authorization
public static void copyFile(File srcFile, File destFile){
InputStream in = null;
OutputStream out = null;
try{
in = new FileInputStream(srcFile);
out = new FileOutputStream(destFile);
byte[] b = new byte[1024];
int length = in.read(b); //返回有效字节数
while(length != -1){
out.write(b, 0, length);
length = in.read(b);
}} catch(Exception e){
e.printStackTrace();
} finally{
try {
in.close();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public class FileTool {
// 拷贝
public static void copyFile(String srcPath, String destPath, String srcWord, String destWord) {
copyFile(new File(srcPath), new File(destPath), srcWord, destWord);
}
// 拷贝文件
// 重载 用于将路径转化为文件
// 添加关键字转化功能
public static void copyFile(File srcFile, File destFile, String srcWord, String destWord) {
InputStream in = null;
OutputStream out = null;
try {
/*
* 1.流
*/
in = new FileInputStream(srcFile);
out = new FileOutputStream(destFile);
byte[] b = new byte[1024];
int length = in.read(b); // 返回有效字节数
/*
* 关键字转化 拷贝
*/
if (srcFile == null && "".equals(srcFile)) {
// 不进行关键字转化 拷贝
while (length != -1) {
out.write(b, 0, length);
length = in.read(b);
}
} else {// 进行关键字转化
// 目标关键字为空则默认为""
if (destWord == null) {
destWord = "";
}
while (length != -1) {
String string = new String(b, 0, length);// 获取0到length-1的字符串
string = string.replace(srcWord, destWord);// 关键字替换
out.write(b, 0, length);
length = in.read(b);
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
in.close();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
// 拷贝文件夹
public static void copyFolder(String srcPath, String destPath, String srcWord, String destWord) {
copyFolder(new File(srcPath), new File(destPath), srcWord, destWord);
}
public static void copyFolder(File srcFile, File destFile, String srcWord, String destWord) {
/**
* 1.是否存在
*/
if (srcFile != null && srcFile.exists()) {
/**
* 2.是否文件夹
*/
if (srcFile.isDirectory()) {
/**
* 3.目的文件夹是否存在
*/
// file流只能创建文件 不能创建文件夹
if (!destFile.exists()) {
destFile.mkdirs();
}
/** 4. 拿到文件夹里面的文件或文件夹的那个文件数组！！！ **/
File[] files = srcFile.listFiles();
// 遍历递归
for (File f : files) {
String string = f.getName();
File file = new File(destFile, string);
copyFolder(f, file, srcWord, destWord);
}
} else {// 非文件夹则必定是文件
copyFile(srcFile, destFile, srcWord, destWord);
}
}
}
// 删除文件
public static void deleteFolder(String srcPath) {
deleteFolder(new File(srcPath));
}
public static void deleteFolder(File srcFile) {
/** 1.判断是否存在 **/
if (srcFile.exists()) {
/** 2.判断是否是文件夹 **/
if (srcFile.isDirectory()) {
File[] files = srcFile.listFiles();
for (File f : files) {
deleteFolder(f);
}
}
srcFile.delete();// 文件 删除自己
} else {
srcFile.delete();
}
}
public static void saveFile(String path, String content) {
saveFile(new File(path), content);
}
public static void saveFile(File file, String content) {
/**
* 1.判断父类文件夹是否存在
*/
if (!file.getParentFile().exists()) {
file.mkdirs();
}
/**
* 2.写流 out
*/
OutputStream out = null;
try {
out = new FileOutputStream(file);
out.write(content.getBytes());
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (out != null)
out.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
out = null;
}
}
}}
带功能界面
package javaTEST;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.filechooser.FileNameExtensionFilter;
//增删查改界面
public class FunctionUI extends JFrame {
static String Path1;// 原地址
static String Path2;// 目的地址
static String Path3;// 删除文件
static String Path4;// 保存文件
public void showUI() {
// 界面
setSize(515, 450);
setLocationRelativeTo(null);
setDefaultCloseOperation(3);
setLayout(null);
/*
* 文件拷贝
*/
// 标签
JLabel fileCopy = new JLabel("文件拷贝");
JLabel src = new JLabel("源路径");
JLabel dest = new JLabel("目标路径");
fileCopy.setBounds(10, 12, 70, 20);
src.setBounds(10, 40, 70, 20);
dest.setBounds(10, 65, 70, 20);
// 源路径
JTextField srcPath = new JTextField();
srcPath.setEditable(true);
srcPath.setBounds(80, 40, 365, 20);
// 目标路径
JTextField destPath = new JTextField();
destPath.setEditable(true);
destPath.setBounds(80, 65, 365, 20);
// 选择按钮
JButton button1 = new JButton("...");
button1.setBounds(450, 40, 30, 20);
JButton button2 = new JButton("...");
button2.setBounds(450, 65, 30, 20);
// aaa转成bbb
JTextField aaa = new JTextField();
JTextField bbb = new JTextField();
aaa.setBounds(10, 100, 200, 20);
bbb.setBounds(280, 100, 200, 20);
JLabel convertTo = new JLabel("转成");
convertTo.setBounds(230, 100, 60, 20);
// 拷贝按钮
JButton copy = new JButton("确认拷贝");
copy.setBounds(195, 135, 100, 20);
// 添加到界面
add(fileCopy);
add(src);
add(dest);
add(srcPath);
add(destPath);
add(button1);
add(button2);
add(aaa);
add(bbb);
add(convertTo);
add(copy);
/*
* 文件删除
*/
// 标签 28 文件删除， 路径
JLabel fileDelete = new JLabel("文件删除");
fileDelete.setBounds(10, 172, 70, 20);
JLabel path = new JLabel("路径");
path.setBounds(10, 200, 70, 20);
// 文本框： 路径
JTextField route = new JTextField();
route.setEditable(true);
route.setBounds(80, 200, 365, 20);
// 按钮： 选择，删除
JButton button3 = new JButton("...");
button3.setBounds(450, 200, 30, 20);
JButton delete = new JButton("删除");
delete.setBounds(195, 235, 100, 20);
// 添加到界面
add(fileDelete);
add(path);
add(route);
add(button3);
add(delete);
/*
* 文件保存
*/
// 标签： 文件保存， 目标路径
JLabel fileSave = new JLabel("文件保存");
fileSave.setBounds(10, 277, 70, 20);
JLabel destSave = new JLabel("目标路径");
destSave.setBounds(10, 305, 70, 20);
// 文本框： 目标路径， 输入框
JTextField savePath = new JTextField();
savePath.setBounds(80, 305, 365, 20);
savePath.setEditable(true);
JTextField enter = new JTextField();
enter.setBounds(10, 330, 415, 20);
enter.setEditable(true);
// 按钮： 选择， 保存
JButton button4 = new JButton("...");
button4.setBounds(450, 305, 30, 20);
JButton save = new JButton("保存");
save.setBounds(430, 330, 60, 20);
// 添加
add(fileSave);
add(destSave);
add(savePath);
add(enter);
add(button4);
add(save);
setVisible(true);
button1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser j = new JFileChooser();
j.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
j.showOpenDialog(null);
// 设置后缀名
FileNameExtensionFilter filter = new FileNameExtensionFilter(".txt", "txt");
j.setFileFilter(filter);
Path1 = j.getSelectedFile().getAbsolutePath();
srcPath.setText(Path1);
}
});
button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser j = new JFileChooser();
j.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
j.showOpenDialog(null);
Path2 = j.getSelectedFile().getAbsolutePath();
destPath.setText(Path2);
}
});
button3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser j = new JFileChooser();
j.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
j.showOpenDialog(null);
Path3 = j.getSelectedFile().getAbsolutePath();
route.setText(Path3);
}
});
button4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser j = new JFileChooser();
j.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
j.showOpenDialog(null);
Path4 = j.getSelectedFile().getAbsolutePath();
savePath.setText(Path4);
}
});
// 确认拷贝
copy.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String srcWord = aaa.getText();
String destWord = bbb.getText();
// FileTool ft = new FileTool();
FileTool.copyFile(Path1, Path2, srcWord, destWord);
}
});
// 删除
delete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileTool ft = new FileTool();
Path3 = route.getText();
ft.deleteFolder(Path3);
}
});
// 保存
save.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileTool ft = new FileTool();
Path4 = savePath.getText();
String content = enter.getText();
ft.saveFile(Path4, content);
}
});
}
public static void main(String args[]) {
FunctionUI fc = new FunctionUI();
fc.showUI();
}
}
