java从输入流中获取数据并返回字节数组示例-java教程

import java.io.ByteArrayOutputStream;import java.io.InputStream;//从输入流中获取数据并以字节数组返回public class StreamTool {    /**     * 从输入流获取数据     * @param inputStream     * @return     * @throws Exception     */    public static byte[] readInputStream(InputStream inputStream) throws Exception{        byte[] buffer = new byte[1024];        int len = -1;        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();        while((len = inputStream.read(buffer)) != -1){            outputStream.write(buffer, 0, len);        }        outputStream.close();        inputStream.close();        return outputStream.toByteArray();    }}

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