比如说读取d:\1.txt的文件内容,其中里面包括若干个回车,把读取到的内容复制到d:\2.txt中,让2.txt和1.txt内容和格式都完全一样。我用下面这段代码复制文件后,在2.txt中每一个回车都被一个小黑块代替,郁闷
主要代码:
public static void main(String[] args) throws Exception {
FileReader fis=new FileReader("d:\\1.txt");
BufferedReader br=new BufferedReader(fis);
String str="";
String str1=null;
while((str1=br.readLine())!=null)
{
str1+="\r";
str+=str1;
}
FileWriter fw=new FileWriter("d:\\2.txt");
BufferedWriter bw=new BufferedWriter(fw);
bw.write(str);
bw.close();
fw.close();
}请问怎么写代码才能满足我上面说的那些条件呢?即复制后两个文件的内容和格式完全一样。谢谢
主要代码:
public static void main(String[] args) throws Exception {
FileReader fis=new FileReader("d:\\1.txt");
BufferedReader br=new BufferedReader(fis);
String str="";
String str1=null;
while((str1=br.readLine())!=null)
{
str1+="\r";
str+=str1;
}
FileWriter fw=new FileWriter("d:\\2.txt");
BufferedWriter bw=new BufferedWriter(fw);
bw.write(str);
bw.close();
fw.close();
}请问怎么写代码才能满足我上面说的那些条件呢?即复制后两个文件的内容和格式完全一样。谢谢
FileInputStream fis = new FileInputStream("d:\\1.txt");
BufferedInputStream br = new BufferedInputStream(fis); FileOutputStream fw = new FileOutputStream("d:\\2.txt");
BufferedOutputStream bw = new BufferedOutputStream(fw);
int a;
while ((a = br.read()) != -1) {
bw.write(a);
}
bw.close();
fw.close();
}
try {
File file = new File(destfile);
file.createNewFile(); File iFile = new File(srcfile);
File oFile = new File(destfile); FileReader in = new FileReader(iFile);
FileWriter out = new FileWriter(oFile); int c;
while ((c = in.read()) != -1) {
out.write(c);
} in.close();
out.close();
return true;
} catch (IOException e) {
return false;
}
}
import java.io.*;public class Filecopy { /**
* @param args
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
if (args.length == 0)
args = new String[] { "g:\\2", "g:\\1" };
File frompath = new File(args[0]);
File topath = new File(args[1]);
String[] fromlist = frompath.list();
for (int i = 0; i < fromlist.length; i++) {
File fromfile = new File(frompath.getPath(), fromlist[i]);
File tofile = new File(topath.getPath(), fromlist[i]);
if (fromfile.isDirectory()) {
tofile.mkdirs();
System.out.println( fromfile.getCanonicalPath());
main(new String[] { fromfile.getPath(), tofile.getPath() });
}
else {
int ch;
byte[] b = new byte[256];
RandomAccessFile fin = new RandomAccessFile(fromfile, "r");
RandomAccessFile fout = new RandomAccessFile(tofile, "rw");
ch = fin.read(b);
while (ch != -1) {
fout.write(b);
ch = fin.read(b);
}
fin.close();
fout.close();
}
}
}
}