Java中IOUtils

public class IOUtils
{

public static byte[] getByte(InputStream is) throws Exception
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1)
{
bos.write(buffer);
}
return bos.toByteArray();
}

public static String getString(InputStream is) throws Exception
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1)
{
bos.write(buffer);
}
return bos.toString().trim();
}

public static String read(String filename) throws Exception
{
FileInputStream fis = new FileInputStream(filename);
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
// 将内容读到buffer中，读到末尾为-1
while ((len = fis.read(buffer)) != -1)
{
// 本例子将每次读到字节数组(buffer变量)内容写到内存缓冲区中，起到保存每次内容的作用
outStream.write(buffer, 0, len);
}
byte[] data = outStream.toByteArray(); // 取内存中保存的数据
fis.close();
String result = new String(data, "UTF-8");
return result;
}
}