上传图标后刷新页面，图标不改变，一定要关掉浏览器后重开，图标才改变最近在弄google map api 的东西，在弄一
上传图标后刷新页面，图标不改变，一定要关掉浏览器后重开，图标才改变
最近在弄google map api 的东西，在弄一个自定义marker 图标。 现在就是上传marker图标的图片后，不管怎么刷新页面，图标都不改变，一定要关掉浏览器之后重开，图标才改变。我觉得可能跟浏览器缓存或者之类的有关，但是也弄不明白。
现在想请问下，如果我要实现上传图标后程序刷新页面图标能改变，如何才能实现？谢谢
我的程序如下：
- HTML code
<style type="text/css"> #Preview { filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale); } </style> <% Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver") .newInstance(); String url = "jdbc:sqlserver://localhost:1433;DatabaseName=image"; String user = "sa"; String password = "sa"; Connection conn = DriverManager.getConnection(url, user, password); Statement stmt = conn.createStatement(); String sql = "select * from img_info"; //img_info info = new img_info(); ResultSet rs = stmt.executeQuery(sql); ArrayList<String> lis_nam = new ArrayList<String>(); ArrayList<Double> lis_lat = new ArrayList<Double>(); ArrayList<Double> lis_lon = new ArrayList<Double>(); ArrayList<String> lis_address = new ArrayList<String>(); for (int i = 0; rs.next(); i++) { lis_nam.add(rs.getString("img_name")); lis_lat.add(rs.getDouble("img_lat")); lis_lon.add(rs.getDouble("img_lon")); lis_address.add(rs.getString("img_address")); } int size = lis_nam.size(); String[] nam = (String[]) lis_nam.toArray(new String[size]); Double[] lat = (Double[]) lis_lat.toArray(new Double[size]); Double[] lon = (Double[]) lis_lon.toArray(new Double[size]); String[] address = (String[]) lis_address.toArray(new String[size]); %> <script type="text/javascript">var infowindow;(function() { google.maps.Map.prototype.markers = new Array(); google.maps.Map.prototype.addMarker = function(marker) { this.markers[this.markers.length] = marker; }; google.maps.Map.prototype.getMarkers = function() { return this.markers }; google.maps.Map.prototype.clearMarkers = function() { if (infowindow) { infowindow.close(); } for ( var i = 0; i < this.markers.length; i++) { this.markers[i].set_map(null); } };})();function initialize() { var latlng = new google.maps.LatLng(50.9406645, 6.9599115); var myOptions = { zoom : 12, center : latlng, streetViewControl : false, //not allow the little man shown on the map mapTypeId : google.maps.MapTypeId.ROADMAP }; map = new google.maps.Map(document.getElementById("map_canvas"), myOptions); var tef = "<%=nam[0]%>"; var a = new Array(); var k=0;<%for (int i = 0; i < size; i++) {%> var t = new Object(); t.name = "<%=nam[i]%>" t.lat = <%=lat[i]%> t.lng = <%=lon[i]%> a[k] = t; k++ <%}%> for ( var i = 0; i < a.length; i++) { var latlng = new google.maps.LatLng(a[i].lat, a[i].lng); map.addMarker(createMarker(a[i].name, latlng)); } console.log(map.getMarkers()); console.log(map.getMarkers());}var mark=''; //set a variable of mark icon//this function is to change the icon addressfunction selectIcon(imgFile){ var newPreview = document.getElementById("Preview"); newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile.value; newPreview.style.width = "80px"; newPreview.style.height = "80px"; }//change the icon picturefunction changeIcon(){<%String ima=request.getParameter("image");try{String pathi=request.getRealPath("/");File outputFile =null; //out.print("image path is"+ima);File inputFile = new File(ima);BufferedImage input = ImageIO.read(inputFile); //转换为png格式的图片 outputFile = new File(pathi+"/icon/icon.png");ImageIO.write(input, "PNG", outputFile);}catch(Exception e){ System.out.print(e.toString());}%>}function createMarker(name, latlng) { var marker = new google.maps.Marker( { position : latlng, icon : 'icon/icon.png', //change the icon of the mark map : map }); google.maps.event.addListener(marker, "click", function() { if (infowindow) infowindow.close(); infowindow = new google.maps.InfoWindow(); //window.alert(name); infowindow.setContent(name+'缩略图位置<a href="get.jsp?name='+name+'"><image src="img/'+name+'_s.jpg" border="0"/></a>'); infowindow.open(map, marker); }); return marker;}</script> </head> <body onload="initialize()"> <div id="map_canvas" style="width: 50%; height: 400px; float: left;"></div> <br style="clear: both;" /> <button onclick="map.clearMarkers();"> clear </button> <br /> <FORM METHOD=POST action="11.jsp"> <p>请选择一个图片进行预览：<input type="file" size="20" name="image" onchange="javascript:selectIcon(this);" /></p> <div id="Preview"></div> <INPUT TYPE="submit" onclick="javascript:changeIcon();initialize()" value="提交"> </FORM> <INPUT TYPE="submit" onclick="javascript:window.location.href=window.location.href;" value="提"> </body></html>
[解决办法]
for ( var i = 0; i < this.markers.length; i++) {
this.markers[i].set_map(null);
}
里的 set_map改为 setMap
我用的是Ｖ３版，测试通过