Question

我已将javascript文件包含在jsp文件的头部！我想要的是有一个变量，它增加了每个人使用点击地图，我想在jsp页面中的那个值。请告诉我怎么做，这是我的代码！

JSP文件代码！增量值i定义为ClickHandler.js

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
<script src="ClickHandler.js" type="text/javascript">
</script>
</head>

<h1>This is login Page</h1>

<body onload='init();'>


<form action="helloWelcome" method="post">
<input type="text" name="username">
<input type="text" name="surname">
<input type="submit" value="submit">
<div id="Map" style="height: 650px" ></div>
</form>

</body>
</html>

这是我的ClickHandler.js文件代码！

var i=0;

var map,vectorLayer, selectedFeature;
           var lat=33.7167;
            var lon=73.0667;
            var zoom=10;
            var map;
        var curpos = new Array();
        var position;

            var fromProjection = new OpenLayers.Projection("EPSG:4326");   // Transform from WGS 1984
            var toProjection   = new OpenLayers.Projection("EPSG:900913"); // to Spherical Mercator Projection

            var cntrposition       = new OpenLayers.LonLat(lon, lat).transform( fromProjection, toProjection);

        function init()
        {
                map = new OpenLayers.Map("Map",{
                            controls: 
                            [
                                        new OpenLayers.Control.PanZoomBar(),                        
                            new OpenLayers.Control.LayerSwitcher({}),
                            new OpenLayers.Control.Permalink(),
                            new OpenLayers.Control.MousePosition({}),
                            new OpenLayers.Control.ScaleLine(),
                            new OpenLayers.Control.OverviewMap(),
                                    ]
                              }
                                );
                var mapnik      = new OpenLayers.Layer.OSM("MAP"); 

            map.addLayers([mapnik]);
            //map.addLayer(mapnik);
            map.setCenter(cntrposition, zoom);

            //markers.addMarker(new OpenLayers.Marker(cntrposition));

            var click = new OpenLayers.Control.Click();
            map.addControl(click);

            click.activate();
};

OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control, {               
 defaultHandlerOptions: {
  'single': true,
  'double': false,
  'pixelTolerance': 0,
  'stopSingle': false,
  'stopDouble': false
 },

 initialize: function(options) {
  this.handlerOptions = OpenLayers.Util.extend(
   {}, this.defaultHandlerOptions
  );
  OpenLayers.Control.prototype.initialize.apply(
   this, arguments
  );
  this.handler = new OpenLayers.Handler.Click(
   this, {
    'click': this.trigger
   }, this.handlerOptions
  );
 },

 trigger: function(e) {
  var lonlat = map.getLonLatFromPixel(e.xy);
  lonlat1= new OpenLayers.LonLat(lonlat.lon,lonlat.lat).transform(toProjection,fromProjection);
  var long_value=lonlat1.lon;
  var lat_value=lonlat1.lat;
  //action=""
  i=i+1;
  alert("ur coordinates ..."+i+" "+long_value + "  " +lat_value);

  //<a href="login.jsp"><a>
  //<link href="login.jsp" >
 }
});

在java中访问jsp中的javascript变量

0 个答案: