批量压缩放大图片(java).docx

package com.tzx.a;

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.UIManager;

public class PicPro extends WindowAdapter implements ActionListener{
JFrame frame;
JPanel panel1,panel3,panel4,panel5;
JTextField tf1,tf2,tf3,tf4;
JTextArea ta;
JLabel label1,label2,label3,label4;
JButton button,button1,button2;
Font font1=new Font("宋体",Font.PLAIN,20);
Font font2=new Font("宋体",Font.PLAIN,16);

File filein;
File fileout;
File[]filelist;
File wzw=new File("wzw");
int width;
int height;
boolean flag_in; //输入文件夹
boolean flag_out; //输出文件夹
boolean flag_num; //缩放像素

PicPro(){
frame=new JFrame("批量图片处理");
frame.setSize(500,600);
frame.setLocation(300,100);
frame.setResizable(false);
panel1=new JPanel();
panel3=new JPanel();
panel4=new JPanel();
panel5=new JPanel();
tf1=new JTextField(30);
tf2=new JTextField(30);
tf3=new JTextField(7);
tf4=new JTextField(7);
tf1.setFont(font1);
tf2.setFont(font1);
tf3.setFont(font1);
tf4.setFont(font1);
label1=new JLabel("源文件夹");
label2=new JLabel("目标文件夹");
label3=new JLabel("转换后X:");
label4=new JLabel("转换后Y:");
label1.setFont(font2);
label2.setFont(font2);
label3.setFont(font2);
label4.setFont(font2);
ta=new JTextArea();
ta.setFont(font2);
ta.setEditable(false);
ta.setLineWrap(true);
JScrollPane scroller=new JScrollPane(ta);
scroller.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
frame.add(scroller,BorderLayout.CENTER);
ta.setText("请注意各项的填写格式,区分大小写:\n"+
"源文件夹填写要转换图片集所在文件夹,例如'D:\\picture\\';\n"+
"目标文件夹填写转换后保存的文件夹,例如'C:\\picture\\';\n"+
"转换后X：填写希望转换后图片的宽度(整数);\n"+
"转换后Y：填写希望转换后图片的高度(整数);\n"+
"当源文件夹中有非图片格式文件或文件夹时，程序会自动选择出图片文件\n"+
"Change之前请先Check,当目标文件夹中重名情况时，程序会给出是否覆盖提示.\n"+
"\t\t\t程序问题发送到wzwahl36@\n");
button=new JButton("Change");
button1=new JButton("Check");
button2=new JButton("Check");
button.setFont(font2);
button1.setFont(font2);
button2.setFont(font2);
panel1.setLayout(new GridLayout(3,1));
panel1.add(panel3);
panel1.add(panel4);
panel1.add(panel5);
panel3.add(label1);
panel3.add(tf1);
panel3.add(button1);
panel4.add(label2);
panel4.add(tf2);
panel4.add(button2);
panel5.add(label3);
panel5.add(tf3);
panel5.add(label4);
panel5.add(tf4);
panel5.add(button);
frame.add(panel1,BorderLayout.NORTH);
frame.setVisible(true);

button.addActionListener(this);
button1.addActionListener(this);
button2.addActionListener(this);
frame.addWindowListener(this);
}

/**
* TODO对按钮进行监听
* */
public void actionPerformed(ActionEvent e){
if(e.getSource()==button){
flag_num=false;
if(checkNum(tf3.getText())==true&&checkNum(tf4.getText())){
width=(int) Double.parseDouble(tf3.getText());
height=(int) Double.parseDouble(tf4.getText());
flag_num=true;
}
else {
flag_num=false;
ta.append("XY填写格式不正确,请重新填写\n");
}
if(flag_in==true&&flag_out==true&&flag_num==true){
ta.append("目标文件列表\n");
int cnt=0;
for(int i=0;i<filelist.length;i++){
if(filelist[i]!=wzw){
File outtemp;
try {

RenderedImage im=convert(width,height,ImageIO.read(filelist[i]));
String outputFilename="副本"+filelist[i].getName();
String format=outputFilename.substring(outputFilename.lastIndexOf('.')+1);
outtemp=new File(fileout+"\\"+outputFilename);

//System.out.println(outputFilename);
if(outtemp.exists()==true){
int restartChoose=JOptionPane.showConfirmDialog(frame,"有相同名称的文件，是否覆盖？","提示",JOptionPane.OK_CANCEL_OPTION);
if(restartChoose==JOptionPane.OK_OPTION){
ImageIO.write(im,format,outtemp);
ta.append(outtemp.getAbsolutePath());
ta.append("\t\t"+"Finished"+"\n");
cnt++;
}
else{
return;
}
}
else{
ImageIO.write(im,format,outtemp);
ta.append(outtemp.getAbsolutePath());
ta.append("\t\t"+"Finished"+"\n");
cnt++;
}
}catch (IOException e2) {
e2.printStackTrace();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
ta.append("目标文件共"+cnt+"个\n");
}
}

else if(e.getSource()==button1){
flag_in=false;
filein=new File(tf1.getText());
if(filein.exists()==true&&filein.isDirectory()==true){
ta.append("\n源文件夹填写格式正确\n");
flag_in=true;
filelist=filein.listFiles();
for(int i=0;i<filelist.length;i++){
if(filelist[i].isFile()==false){
filelist[i]=wzw;
}
}
String ispic;
for(int i=0;i<filelist.length;i++){
if(filelist[i]!=wzw){
String temp;
temp=filelist[i].getName();
ispic=temp.substring(temp.lastIndexOf('.')+1);
if((ispic.equals("jpg")==false)&&(ispic.equals("bmp")==false)&&
(ispic.equals("gif")==false)&&(ispic.equals("png")==false)&&
(ispic.equals("JPG")==false)&&(ispic.equals("BMP")==false)&&
(ispic.equals("GIF")==false)&&(ispic.equals("PNG")==false)){
filelist[i]=wzw;
}
}
}
ta.append("源文件列表:\n");
int num=0;
for(int i=0;i<filelist.length;i++){
if(filelist[i]!=wzw){
ta.append(filelist[i]+"\n");
num++;
}
}
ta.append("源文件共"+num+"个\n");
ta.append("\n");
}
else{
ta.append("\n源文件夹不存在或者输入格式错误！\n");
flag_in=false;
}

}
else if(e.getSource()==button2){
flag_out=false;
fileout=new File(tf2.getText());
if(fileout.exists()==true&&fileout.isDirectory()==true){
ta.append("目标文件夹填写格式正确\n");
flag_out=true;

}
else {
ta.append("\n目标文件夹不存在或者输入格式错误！\n");
flag_out=false;
}
}
}
public void windowClosing(WindowEvent e){
System.exit(0);
}

public static void main(String[] args) throws Exception {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch(Exception e) {
}
new PicPro();
}

/**
* TODO图片缩放
* */
public static BufferedImage convert(int width,int height,BufferedImage input)throws Exception{
BufferedImage output=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
Image image=input.getScaledInstance(output.getWidth(),output.getHeight(),Image.SCALE_SMOOTH);
output.createGraphics().drawImage(image,null,null);
return output;
}

/**
* TODO判断填写的像素是否是整数
* */
public static boolean checkNum(String s){ //判断String是否为可转化为数字的字符串
int i;
boolean flag=false;
char paste_ch[]=s.toCharArray();
for(i=0;i<s.length();i++){
if((paste_ch[i]!='1')&&(paste_ch[i]!='2')&&(paste_ch[i]!='3')&&(paste_ch[i]!='4')&&
(paste_ch[i]!='5')&&(paste_ch[i]!='6')&&(paste_ch[i]!='7')&&(paste_ch[i]!='8')&&
(paste_ch[i]!='9')&&(paste_ch[i]!='0')&&(paste_ch[i]!='.')&&(paste_ch[i]!='-')){
flag=false;
break;
}
if((s.contains("-")==true&&s.startsWith("-")==false)||(s.contains(".")==true&&s.startsWith(".")==true)){
flag=false;
break;
}
flag=true;
}
return flag;
}
}