struts从oracle获得图片并在jsp显示图片

1.OutputStream write

BufferedInputStream bis = new BufferedInputStream(blob.getBinaryStream()); 
BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream()); 

InputStream in = blob.getBinaryStream(); 
int size = 0; 
int b = 0; 
byte[] buffer = new byte[8192]; 
response.setContentType("image/jpeg"); 
response.setContentLength(in.available()); 

while((b=bis.read()) != -1) { 
bos.write(b); 
} 
bos.flush(); 
bos.close(); 
bis.close();

2.ImageIO.write

BufferedInputStream inputimage = new BufferedInputStream(blob.getBinaryStream());   

BufferedImage image = null;   
try 
{   
   image = ImageIO.read(inputimage);   
   ServletOutputStream sos = response.getOutputStream();   
   ImageIO.write(image, "jpg", sos);   
   JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(sos);   
   encoder.encode(image);   
   inputimage.close();   
   sos.flush();   
}   
catch(Exception e)   
{   
   System.out.println(e);   
}  

3.jsp

<img src="image.do"></img>  

注：要注意思可能会有缓存问题。