我是新来的。如果格式不正确,请原谅我。
所以在C盘中,我有一个名为Search Files
的文件夹,在Search Files
内,我有四个名为Folder 1
,Folder 2
,Folder 3
的子目录,以及Folder 4
。
在Folder 1
内,我有一个名为hello.txt
的文本文件,该文件的内容为hello
。
我的预期输出为"Directory of the file" + "file name" + "file body"
。
以下是我现在的代码。
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Iterator;
import org.apache.commons.io.FileUtils;
public class FileDirectories {
public static void main(String[] args) throws IOException {
File[] files = new File("C:\\Search Files").listFiles();
showFiles(files);
}
public static void showFiles(File[] files) throws IOException {
String line = null;
try{
for (File file : files) {
if (file.isDirectory()) {
String fileName = "Directory" + file.getName();
//System.out.println("Directory: " + file.getName());
BufferedReader in = new BufferedReader(new FileReader(file));
while((line = in.readLine()) != null)
{
System.out.println(line);
}
in.close();
showFiles(file.listFiles()); // Calls same method again.
} else {
System.out.println("File: " + file.getName() + file.toString());
}
}
}catch(NullPointerException e){
e.printStackTrace();
}
/*Iterator<File> it = FileUtils.iterateFiles(new File("C://Search Files//"), null, false);
while(it.hasNext()) {
System.out.println(((File) it.next()).getName());
}*/
}
}
当我执行上面的代码时,我收到以下错误:
Exception in thread "main" java.io.FileNotFoundException: C:\Search Files\Folder 1 (Access is denied)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.io.FileReader.<init>(FileReader.java:72)
at org.raghav.stuff.FileDirectories.showFiles(FileDirectories.java:27)
at org.raghav.stuff.FileDirectories.main(FileDirectories.java:16)
我需要再次获取文件目录,文件名和文件内容。
如果hello.txt
,预期输出应为:
C:\ Search Files \ Folder1 \ hello.txt hello
你们能指出我正确的方向吗?如何修复上述异常以及如何获取显示目录,文件名和文件内容的String?
先谢谢。
答案 0 :(得分:1)
您的代码看起来没问题,除非您必须按如下方式组织它,尤其是showFiles方法。
public static void showFiles(File[] files) throws IOException {
String line = null;
try{
for (File file : files) {
if (file.isDirectory()) {
String fileName = "Directory: " + file.getName();
System.out.print(fileName);
showFiles(file.listFiles()); // Calls same method again.
} else {
System.out.print("\tFile: " + file.getName() + file.toString());
//System.out.println("Directory: " + file.getName());
BufferedReader in = new BufferedReader(new FileReader(file));
while((line = in.readLine()) != null)
{
System.out.print("\t Content:" + line);
}
in.close();
System.out.println();
}
}
}catch(NullPointerException e){
e.printStackTrace();
}
输出结果如下:
Directory: Folder 1 File: C:\Search Files\Folder 1\test.txt Content:this is a test
Directory: Folder 2 File: C:\Search Files\Folder 2\test.txt Content:this is a test
Directory: Folder 3 File: C:\Search Files\Folder 3\test.txt Content:this is a test
Directory: Folder 4 File: C:\Search Files\Folder 4\test.txt Content:this is a test