java每日一練-------檔案讀取
import java.io.*;
import java.util.ArrayList;
import java.util.List;
public class IoOperateor {
public static List<File> total_files = new ArrayList<File>();
public static void main(String []args) throws IOException {
String base_dir = "你的目錄;
dir_search(new File(base_dir));
for(int i=0; i<total_files.size(); i++) {
File file = (File)total_files.get(i);
file_read(file);
}
}
public static void file_read(File f) throws IOException {
//FileInputStream: 位元組流處理 InputStreamReader: 字元流處理[可指定編碼]
//BufferedReader: 字元流處理[可使用readLine()讀取每行]
BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(f),"utf-8"));
StringBuffer contents = new StringBuffer();
while(true) {
String temp_content = in.readLine();
if(temp_content!=null) {
contents.append(temp_content);
System.out.println(temp_content);
}else {
break;
}
}
in.close();
}
public static void dir_search(File f) {
File []files = f.listFiles();
for(File file: files) {
if(file.isDirectory()) {
dir_search(file);
}
else {
total_files.add(file);
}
}
}
}