Java Reader Read loadResAsString(String res)

Description

load Res As String

License

Open Source License

Declaration

static public String loadResAsString(String res) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.BufferedInputStream;

import java.io.ByteArrayOutputStream;

import java.io.FileInputStream;

import java.io.IOException;
import java.io.InputStream;

import java.io.Reader;

public class Main {
    static public String loadResAsString(String res) throws IOException {
        InputStream is = loadRes(res);
        return getStreamContentAsString(is, "UTF-8");
    }/*from  w  w w  .  java 2 s.  com*/

    static public InputStream loadRes(String res) throws IOException {
        InputStream is = null;
        if (res.startsWith("file:")) {
            is = new FileInputStream(res.substring("file:".length()));
        } else if (res.startsWith("classpath:")) {
            res = res.substring("classpath:".length());
            is = Thread.currentThread().getContextClassLoader().getResourceAsStream(res);
        } else {
            is = Thread.currentThread().getContextClassLoader().getResourceAsStream(res);
        }
        return is;
    }

    static public String getStreamContentAsString(InputStream is, String encoding) throws IOException {
        return new String(getStreamContentAsBytes(is), encoding);
    }

    static public String getStreamContentAsString(Reader in) throws IOException {
        char[] data = new char[4912];
        int available = -1;
        StringBuilder b = new StringBuilder();
        while ((available = in.read(data)) > -1) {
            b.append(data, 0, available);
        }
        return b.toString();
    }

    static public byte[] getStreamContentAsBytes(InputStream is) throws IOException {
        BufferedInputStream buffer = new BufferedInputStream(is);
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        byte[] data = new byte[4912];
        int available = -1;
        while ((available = buffer.read(data)) > -1) {
            output.write(data, 0, available);
        }
        is.close();
        return output.toByteArray();
    }

    static public byte[] getStreamContentAsBytes(InputStream is, int maxRead) throws IOException {
        BufferedInputStream buffer = new BufferedInputStream(is);
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        byte[] data = new byte[4912];
        int available = -1, read = 0;
        while ((available = buffer.read(data)) > -1 && read < maxRead) {
            if (maxRead - read < available)
                available = maxRead - read;
            output.write(data, 0, available);
            read += available;
        }
        return output.toByteArray();
    }
}

Related

1. load(InputStream input, int bufsize)
2. loadChars(Reader in)
3. loadFully(String path)
4. loadReader(final Reader in, final StringBuffer buffer)
5. loadReader(java.io.Reader in)
6. loadText(Reader reader, int length)