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Java Tutorial » JSP » JavaScript JSP

23. 45. 1. Pass Parameter from JavaScript to JSP

index.html


<HTML>

    <HEAD>

    </HEAD>



    <BODY>

        <DIV STYLE="POSITION:ABSOLUTE; LEFT:10; TOP:10; WIDTH:480; HEIGHT:400; 

        BACKGROUND-COLOR:BLACK;"></DIV>

    </BODY>

        <SCRIPT>

            <!--



                var outString = "basic.jsp?x1=" + 10

                    outString += "&y1=" + 10

                    outString += "&x2=" + 100

                    outString += "&y2=" + 100

                    location.href = outString



            // -->

        </SCRIPT>

</HTML>

basic.jsp


<%@ page contentType="image/jpeg" import="java.io.*, java.awt.*, java.awt.image.*,com.sun.image.codec.jpeg.*" %>

<%

    try {



        int x1 = Integer.parseInt(request.getParameter("x1"));

        int y1 = Integer.parseInt(request.getParameter("y1"));

        int x2 = Integer.parseInt(request.getParameter("x2"));

        int y2 = Integer.parseInt(request.getParameter("y2"));



        BufferedImage image = new BufferedImage(480, 400, BufferedImage.TYPE_INT_RGB);

        Graphics2D g = image.createGraphics();

        g.drawLine(x1, y1, x2, y2);



        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(response.getOutputStream());

        encoder.encode(image);



    } catch (Exception e) {}

%>

Download: PassParameterFromJavaScriptToJSP.zip( 1 k)

23. 45. JavaScript JSP
	23. 45. 1.	Pass Parameter from JavaScript to JSP

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