HTTP请求头图片打开

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


//图片压缩
public class Demo2 extends HttpServlet {


	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		//通知浏览器打开一副图片
		response.setHeader("content-type", "image/jpeg");
		InputStream is = new FileInputStream(new File("D:/TOOL/MyEclipseSpace/day04/WebRoot/images/cc.jpg"));
		OutputStream os = response.getOutputStream();
		byte[] buf = new byte[1024];
		int len = 0;
		while((len = is.read(buf)) > 0)
		{
			os.write(buf,0,len);
		}
		is.close();
		os.close();
		
	}

}