InputStream、OutputStream、String之间的读出、写入

 

 

/** *//**
     * 将输入流读入字符串
     * 
     * @param instream
     *            输入流
     * @param charset
     *            字符集
     * @return
     * @throws IOException
     */
    public String inputStream2String(InputStream instream, String charset)
            throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                instream, charset));
        StringBuffer buffer = new StringBuffer();
        String line = null;
        while ((line = reader.readLine()) != null) {
            buffer.append(line);
        }
        instream.close();
        return buffer.toString();
    }

    /** *//**
     * 将字符串写入输出流
     * 
     * @param outstream
     *            输出流
     * @param s
     *            字符串
     * @param charset
     *            字符集
     * @throws IOException
     */
    public void string2OutputStream(OutputStream outstream, String s,
            String charset) throws IOException {
        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
                outstream, charset));
        writer.write(s);
        writer.close();
    }