java byte[] 转图片 在jsp页面显示

http://www.2cto.com/kf/201208/150530.html

public String getImgFromByte() {
//业务逻辑取得图片的byte[] 数据

                .......

InputStream buffin = new ByteArrayInputStream(/*byte[]数据*/);
String str= picUrl.getImageType();  
               String imgtype[] = str.split("/"); 
BufferedImage img;
try {
img = ImageIO.read(buffin);
// 禁止图像缓存。
this.getResponse().setHeader("Pragma", "no-cache");
this.getResponse().setHeader("Cache-Control", "no-cache");
this.getResponse().setDateHeader("Expires", 0);
this.getResponse().setContentType(picUrl.getImageType());

// 将图像输出到Servlet输出流中。
ServletOutputStream sos;
sos = this.getResponse().getOutputStream();
ImageIO.write(img, imgtype[1], sos);
sos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}

jsp页面

<img src="getUserIcon!getImgFromByte.action"/></span>

struts.xml只需配置acton跳转即可