InputStream流和byte[]数组互转

代码如下：

File fi = new File("C:/Users/Administrator/Desktop/知识点.png");
InputStream is = new FileInputStream(fi);
ByteArrayOutputStream bo = new ByteArrayOutputStream();
byte[] b = new byte[1024];
int len = 0;
while((len=is.read(b))>0){
bo.write(b,0,len);
}
is.close();
System.out.println(bo.toByteArray());

//byte[]转InputStream
InputStream ib = new ByteArrayInputStream(bo.toByteArray());
File fo1 = new File("C:/Users/Administrator/Desktop/ocxDemo/123.png");
OutputStream os1 = new FileOutputStream(fo1);
byte[] b1 = new byte[1024];
int len1 = 0;
while((len1=ib.read(b1))>0){
os1.write(b1);
}
ib.close();
os1.close();