圖片讀取成流顯示在頁面

 

 

 

JSP頁面路徑
<img src="showimg.action">

struts.xml配置

<action name="showimg" class="com.test.userinfo.action.ShowImgAction">
  </action>

action code

public class ShowImgAction extends MyActionSuport{
 
 
 private static final long serialVersionUID = 1L;

 public String execute() throws Exception {
  //方法一
//  URL url=new URL("http://127.0.0.1:8080/eprintGlobal/images/body_top_left.gif");
//  Image image = ImageIO.read(url);
  
//  方法二
   File file = new File("F:\\1.jpg");
     InputStream is = new FileInputStream(file);
     Image image = ImageIO.read(is);//读图片
    
    
     RenderedImage img=(RenderedImage) image;
     ImageIO.write(img, "jpeg", response.getOutputStream());
        return null;
 }
}