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();

    }

}

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