ReadFromFile

来源:互联网 发布:linux删除整个目录 编辑:程序博客网 时间:2024/05/21 03:55
import java.io.*;
import java.util.*;
class Extractor{
private File PageFile = null;
private String Html = null;
Extractor(String path) throws IOException {
PageFile = new File(path);
Html = readFromFile(PageFile, "utf-8");
String Result = new RegularExpression(Html).getResult(); 
System.out.println("Result:"+Result);
}

public static char[] readCharsFromFile(File file, String encoding) 
throws IOException{
long fileLength = file.length();
CharArrayWriter charWriter = new CharArrayWriter((int)fileLength);
FileInputStream in = null;
InputStreamReader inReader = null;
BufferedReader bufferedReader = null;
try {
in = new FileInputStream(file);//read from file into stream
inReader = new InputStreamReader(in, encoding);
bufferedReader = new BufferedReader(inReader);
char[] buffer = new char[4096];
      int numChars;
      while ((numChars = bufferedReader.read(buffer)) > 0)//use bufferedReader to read
           charWriter.write(buffer,0,numChars);
} finally {
closeQuietly(in);
closeQuietly(inReader);
closeQuietly(bufferedReader);
}
return charWriter.toCharArray();
}

public static IOException closeQuietly(Closeable c) {
        if (c == null) 
            return null;
        try {
            c.close();
        } catch (IOException e) {
            return e;
        }
        return null;
    }

public static String readFromFile(File file, String encoding) throws IOException {
return new String(readCharsFromFile(file, encoding));
}



}

原创粉丝点击