StreamUtil.java

package org.framework.util;

//~--- non-JDK imports --------------------------------------------------------

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

//~--- JDK imports ------------------------------------------------------------

import java.io.*;

/**
 * 流操作工具
 * Created by lizhaoz on 2015/12/17.
 */
public final class StreamUtil {
    private static final Logger LOGGER = LoggerFactory.getLogger(StreamUtil.class);

    /**
     * 从输入流中获取字符串
     * author：Lizhao
     * Date:15/12/17
     * version:1.0
     *
     * @param is
     *
     * @return
     */
    public static String getString(InputStream is) {
        StringBuilder sb = new StringBuilder();

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
            String         line;

            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
        } catch (IOException e) {
            LOGGER.error("get string failure", e);

            throw new RuntimeException(e);
        }

        return sb.toString();
    }

    /**
     * 将输入流复制到输出流
     * author：Lizhao
     * Date:15/12/31
     * version:1.0
     *
     * @param inputStream
     * @param outputStream
     */
    public static void copyStream(InputStream inputStream, OutputStream outputStream) {
        try {
            int    length;
            byte[] buffer = new byte[4 * 1024];

            while ((length = inputStream.read(buffer, 0, buffer.length)) != -1) {
                outputStream.write(buffer, 0, length);
            }

            outputStream.flush();
        } catch (Exception e) {
            LOGGER.error("copy stream failure", e);

            throw new RuntimeException(e);
        } finally {
            try {
                inputStream.close();
                outputStream.close();
            } catch (Exception e) {
                LOGGER.error("close stream failure", e);
            }
        }
    }
}


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