import java.io.*;
import java.io.File;
import java.io.FilenameFilter;
public class YDSearch{
public void listFiles(String dir) throws IOException{
File directory = new File(dir);
if (!directory.isDirectory()) {
System.out.println("No directory provided");
return;
}
//create a FilenameFilter and override its accept-method
FilenameFilter filefilter = new FilenameFilter() {
public boolean accept(File dir, String name) {
//if the file extension is .mp3 return true, else false
return name.endsWith(".mp3")||name.endsWith(".mp4")||name.endsWith(".3gp")
||name.endsWith(".mov")||name.endsWith(".avi")||name.endsWith(".wmv");
}
};
String[] filenames = directory.list(filefilter);
DataOutputStream output = new DataOutputStream(new FileOutputStream("C:/Users/Jonathan/Desktop/YouDetect/SearchByFileType/AllMediaFiles.dat"));
for (String name : filenames) {
output.writeUTF(dir + name);
}
output.close();
DataInputStream input = new DataInputStream(new FileInputStream("C:/Users/Jonathan/Desktop/YouDetect/SearchByFileType/AllMediaFiles.dat"));
DataOutputStream output2 = new DataOutputStream(new FileOutputStream("C:/Users/Jonathan/Desktop/ReadyForAnalysis.dat"));
for (String name : filenames) {
FileInputStream in = new FileInputStream(input.readUTF());
int byteCounter = 0;
int rowCounter = 0;
long bufferCounter = 0;
if(name.endsWith(".mp3")){
byte[] b = new byte[36];
int read = in.read(b, 0, 36);
if (byteCounter != 1000){
if (rowCounter == 1){
System.out.println("\n");
rowCounter = 0;
}
output2.writeUTF(org.apache.commons.codec.binary.Hex.encodeHexString(b)+ " " + dir + name);
bufferCounter ++;
rowCounter ++;
}else{
byteCounter = 0;
try{
Thread.sleep(200);
}catch(InterruptedException e) {
}
}
}
else if(name.endsWith(".mp4")){
byte[] b = new byte[29];
int read = in.read(b, 0, 29);
if (byteCounter != 1000){
if (rowCounter == 1){
System.out.println("\n");
rowCounter = 0;
}
output2.writeUTF(org.apache.commons.codec.binary.Hex.encodeHexString(b)+ " " + dir + name);
bufferCounter ++;
rowCounter ++;
}else{
byteCounter = 0;
try{
Thread.sleep(200);
}catch(InterruptedException e) {
}
}
}
//System.out.println("====================");
}
output2.close();
input.close();
DataInputStream input2 = new DataInputStream(new FileInputStream("C:/Users/Jonathan/Desktop/ReadyForAnalysis.dat"));
for (String name : filenames) {
System.out.println(input2.readUTF()+"\n");
}
}
public void checkHeaderSC(String allFiles)throws IOException{
}
public static void main(String[] args) throws IOException {
YDSearch YDSearch = new YDSearch();
YDSearch.listFiles("C:/Users/Jonathan/Desktop/YD Tests/1) High Quality/");
YDSearch.listFiles("C:/Users/Jonathan/Desktop/YD Tests/2) Medium Quality/");
YDSearch.listFiles("C:/Users/Jonathan/Desktop/YD Tests/3) Low Quality/");
YDSearch.checkHeaderSC("C:/Users/Jonathan/Desktop/YouDetect/SearchByFileType/ReadyForAnalysis.dat");
}
}
嘿那里,对上面的编码有一点问题,并希望有人可以提供帮助。这是代码的部分版本,因为真正的代码还有4个if / else if语句。
程序编译并开始正常运行。它会从正在读入/然后在input2中读出的文件返回多个结果,但随后停止,不再产生结果并给出错误:
线程“main”java.io.EOFException中的异常 at java.io.DataInputStream.readUnsignedShort(DataInputStream.java:323) 在java.io.DataInputStream.readUTF(DataInputStream.java:572) 在java.io.DataInputStream.readUTF(DataInputStream.java:547) 在YDSearch.listFiles(YDSearch.java:85) 在YDSearch.main(YDSearch.java:93)
有人知道为什么会发生这种情况并找到他们可以分享的解决方案吗? 我也尝试使变量'b'在if语句中,但由于范围不适用。如果b由if定义,则只需要一个if语句输出到文件
如果您有任何想法,请告诉我,我真的很感激:)
答案 0 :(得分:2)
据我所知,您并不总是为每个名称输出一个输出记录,仅适用于名称与您的某个模式匹配的情况。但是,您确实尝试读取每个名称的输入记录。
如果您有任何文件名与您尝试阅读的模式不符,那么您将获得EOF。
编辑:
更详细地说,问题是你得到一个以“mp3”,“mp4”,“3gp”,“mov”,“avi或”wmv“结尾的所有文件的列表。然后你处理那个列表,并为每个“mp3”和“mp4”文件写出C:/Users/Jonathan/Desktop/ReadyForAnalysis.dat
的内容。然后假设对于文件列表中的每个条目,您将在ReadyForAnalysis.dat
中有一个条目。但是,如果有任何文件以“3gp”,“mov”,“avi或”wmv“结尾,那么这将不成立。