import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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/**
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* 文件对比复制
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* @author JIANGYOUYAO
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* @date 2021/6/7 0007
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*/
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public class filecopy {
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static String targetFilePath="/mnt/sdc/webresource";
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static String sourceFilePaht="C:\\Users\\Administrator\\Desktop\\webresource";
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public static void main(String[] args) throws IOException {
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File sourceFile=new File(sourceFilePaht);
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traverseFolder(sourceFile);
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}
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public static void traverseFolder(File file) throws IOException {
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if (file.exists()) {
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File[] files = file.listFiles();
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if (null == files || files.length == 0) {
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System.out.println("文件夹是空的!");
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return;
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} else {
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for (File file2 : files) {
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if (file2.isDirectory()) {
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//对比target是否存在
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final String s = file2.getCanonicalPath().replaceAll("webresourceback", "webresource");
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File f=new File(s);
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if(!f.exists()){
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System.out.println("复制文件:" + file2.getAbsolutePath());
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f.mkdir();
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}else{
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System.out.println("文件:" + file2.getAbsolutePath()+"存在");
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}
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traverseFolder(file2);
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} else {
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//对比target是否存在,不存在则copy
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final String s = file2.getCanonicalPath().replaceAll("webresourceback", "webresource");
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File f=new File(s);
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if(!f.exists()){
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System.out.println("复制文件:" + file2.getAbsolutePath());
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FileInputStream in=new FileInputStream(file2);
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FileOutputStream out=new FileOutputStream(f);
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byte[] buff=new byte[1024];
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int length=in.read(buff);
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while (length>0){
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out.write(buff,0,length);
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length=in.read(buff);
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}
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out.close();
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in.close();
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}else{
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System.out.println("文件:" + file2.getAbsolutePath()+"存在");
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}
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}
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}
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}
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} else {
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System.out.println("文件不存在!");
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}
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}
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}
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