Android Text File Read getFileContent(File file, String charSet)

Description

get File Content

License

Sun Public License Notice

Declaration

public static String getFileContent(File file, String charSet)
        throws IOException 

Method Source Code

//package com.java2s;
/*****************************************************************************
 *                                                                           *
 *  This file is part of the tna framework distribution.                     *
 *  Documentation and updates may be get from  biaoping.yin the author of    *
 *  this framework                          *
 *                                                                           *
 *  Sun Public License Notice:                                               *
 *                                                                           *
 *  The contents of this file are subject to the Sun Public License Version  *
 *  1.0 (the "License"); you may not use this file except in compliance with *
 *  the License. A copy of the License is available at http://www.sun.com    *
 *                                                                           *
 *  The Original Code is tag. The Initial Developer of the Original          *
 *  Code is biaoping yin. Portions created by biaoping yin are Copyright     *
 *  (C) 2000.  All Rights Reserved.                                          *
 *                                                                           *
 *  GNU Public License Notice:                                               *
 *                                                                           *
 *  Alternatively, the contents of this file may be used under the terms of  *
 *  the GNU Lesser General Public License (the "LGPL"), in which case the    *
 *  provisions of LGPL are applicable instead of those above. If you wish to *
 *  allow use of your version of this file only under the  terms of the LGPL *
 *  and not to allow others to use your version of this file under the SPL,  *
 *  indicate your decision by deleting the provisions above and replace      *
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 *  do not delete the provisions above, a recipient may use your version of  *
 *  this file under either the SPL or the LGPL.                              *
 *                                                                           *
 *  biaoping.yin (yin-bp@163.com)                                            *
 *  Author of Learning Java                                        *
 *                                                                           *
 *****************************************************************************/

import java.io.BufferedOutputStream;
import java.io.BufferedReader;

import java.io.ByteArrayOutputStream;
import java.io.File;

import java.io.FileInputStream;
import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringWriter;

import java.io.Writer;

public class Main {

    public static String getFileContent(String filePath, String charSet)
            throws IOException {
        return getFileContent(new File(filePath), charSet);
    }//from   ww w.j  a  v  a 2s.co  m

    public static String getFileContent(File file, String charSet)
            throws IOException {
        ByteArrayOutputStream swriter = null;
        OutputStream temp = null;
        InputStream reader = null;
        try {
            reader = new FileInputStream(file);
            swriter = new ByteArrayOutputStream();
            temp = new BufferedOutputStream(swriter);

            int len = 0;
            byte[] buffer = new byte[1024];
            while ((len = reader.read(buffer)) > 0) {
                temp.write(buffer, 0, len);
            }
            temp.flush();
            if (charSet != null && !charSet.equals(""))
                return swriter.toString(charSet);
            else
                return swriter.toString();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return "";
        } catch (IOException e) {
            e.printStackTrace();
            throw e;
        } finally {
            if (reader != null)
                try {
                    reader.close();
                } catch (IOException e) {
                }
            if (swriter != null)
                try {
                    swriter.close();
                } catch (IOException e) {
                }
            if (temp != null)
                try {
                    temp.close();
                } catch (IOException e) {
                }
        }
    }

    public static String getFileContent(String filePath) throws IOException {
        Writer swriter = null;
        Reader reader = null;
        try {
            reader = new FileReader(filePath);

            swriter = new StringWriter();

            int len = 0;
            char[] buffer = new char[1024];
            while ((len = reader.read(buffer)) != -1) {
                swriter.write(buffer, 0, len);
            }
            return swriter.toString();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return "";
        } catch (IOException e) {
            e.printStackTrace();
            throw e;
        } finally {
            if (reader != null)
                try {
                    reader.close();
                } catch (IOException e) {
                }
            if (swriter != null)
                try {
                    swriter.close();
                } catch (IOException e) {
                }
        }
    }

    public static String getFileContent(File file) {
        Writer swriter = null;
        Reader reader = null;
        try {
            reader = new FileReader(file);
            swriter = new StringWriter();

            int len = 0;
            char[] buffer = new char[1024];
            while ((len = reader.read(buffer)) > 0) {
                swriter.write(buffer, 0, len);
            }
            swriter.flush();
            return swriter.toString();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return "";
        } catch (IOException e) {
            e.printStackTrace();
            return "";
        } finally {
            if (reader != null)
                try {
                    reader.close();
                } catch (IOException e) {
                }
            if (swriter != null)
                try {
                    swriter.close();
                } catch (IOException e) {
                }
        }

    }

    public static StringBuffer read(String file) throws Exception {
        BufferedReader in = null;
        StringBuffer sb = new StringBuffer();
        String s = null;
        StringBuffer stringbuffer;
        try {
            in = new BufferedReader(new FileReader(file));
            while ((s = in.readLine()) != null)
                sb.append(s).append('\n');
            stringbuffer = sb;
        } finally {
            if (in != null)
                in.close();
        }
        return stringbuffer;
    }
}

Related

1. fileToListByLine(String fileName)
2. fileToSet(final String dirname, final String filename, final Set set)
3. getFileContent(File file)
4. getFileResourceText(String path)
5. read(File file)
6. read(File file)
7. read(File file, boolean raw)