点击地图div上的按钮实现对地图数据的入库操作

小蚂蚁

在地图div上添加一个按钮，单击按钮后弹出一个弹出层，在弹出层的输入框内输入数据后点击提交按钮将数据提交至数据库。
mytest_map.jsp的代码如下：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "https://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd"> 
<html lang='zh-cn' xmlns="https://www.w3.org/1999/xhtml"> 
<head> 
<meta charset='utf-8' /> 
<title>My OpenLayers Map</title> 
<link rel="stylesheet" type="text/css" href="openlayers/theme/default/style.css"/> 
<style type="text/css"> 
#map { 
clear: both; 
position: relative; 
width: 1000px; 
height: 600px; 
border: 1px solid black; 
} 
#operator { 
position: absolute; 
top:10px; 
left:40px; 
z-index: 3000; 
} 
#popDiv { 
position: absolute; 
visibility: hidden; 
overflow: hidden; 
border: 2px solid #AEBBCA; 
background-color: #EEF1F8; 
cursor: move; 
padding: 1px; 
z-index:4000; 
} 
#popTitle { 
background: #9DACBF; 
height: 20px; 
line-height: 20px; 
padding: 1px; 
} 
#popForm { 
padding: 2px; 
padding-left: 15px; 
} 
.title_left { 
font-weight: bold; 
padding-left: 5px; 
float: left; 
} 
.title_right { 
float: right; 
} 
#popTitle .title_right a { 
color: #000; 
text-decoration: none; 
} 
#popTitle .title_right a:hover { 
text-decoration: underline; 
color: #FF0000; 
} 
</style> 
<script type='text/javascript' src='openlayers/OpenLayers.js'></script> 
<script type='text/javascript'> 
function init() { 
format = 'image/png'; 
var bounds = new OpenLayers.Bounds( 
121.120606, 28.169589, 
121.871688, 28.525587 
); 
var options = { 
controls: [], 
maxExtent: bounds, 
maxResolution: 0.0013726171875, 
projection: "EPSG:4326", 
units: 'degrees' 
}; 
map = new OpenLayers.Map('map', options); 
//基础图层，可以用一个图层组做基础图层 
var baselayer = new OpenLayers.Layer.WMS( 
"底图", 
"https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers:'WenLing:xianjie_region', 
format:format, 
}, 
{ 
isBaseLayer:true,//设置本层为基底图层 
yx : {'EPSG:4326' : true} 
} 
); 
//县界 
var xianjie = new OpenLayers.Layer.WMS( 
"县界", 
"https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:xianjie_region', 
transparent:true, //设置从服务器返回的地图图像是透明的 
format: format 
}, 
{ 
displayInLayerSwitcher:false, //使该图层不显示在switcher中 
//minScale:xxx , //只有达到一定缩放比例该图层时才显示 
opacity:0.5 //设置客户端图层半透明 
} 
); 
//水系 
var waters = new OpenLayers.Layer.WMS( 
"水系", "https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:shuixi_region', 
transparent:true, 
format: format 
}, 
{ 
opacity:1 //设置客户端图层不透明 
} 
); 
//岛屿 
var islands = new OpenLayers.Layer.WMS( 
"岛", "https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:dao_region', 
transparent:true, 
format: format 
}, 
{ 
opacity:0.5 
} 
); 
//铁路 
var tielu = new OpenLayers.Layer.WMS( 
"铁路", "https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:tielu_polyline', 
transparent:true, 
format: format 
}, 
{ 
transitionEffect:"resize", //使该图层放大或缩小时产生调整大小的动画 
opacity:0.5 
} 
); 
//县 
var xian = new OpenLayers.Layer.WMS( 
"县", "https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:xian_point', 
transparent:true, 
format: format 
}, 
{ 
//minScale:xxx , //只有达到一定缩放比例该图层时才显示 
opacity:0.5 
} 
); 
//变电站 
biandianzhan = new OpenLayers.Layer.WMS( 
"变电站", "https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:biandianzhan_point', 
transparent:true, 
format: format 
}, 
{ 
opacity:0.5 
} 
); 
guangxianwang = new OpenLayers.Layer.WMS( 
"光纤网", "https://localhost:8080/geoserver/WenLing/wms", 
{ 
layers: 'WenLing:guangxianwang_polyline', 
transparent:true, 
format: format 
}, 
{ 
transitionEffect:"resize", //使该图层放大或缩小时产生调整大小的动画 
opacity:0.5 
} 
); 
map.addLayers([baselayer, xianjie, waters, islands, tielu, xian, biandianzhan, guangxianwang]); 
map.setCenter(map.getCenter());//设置地图中心点 
map.addControl(new OpenLayers.Control.PanZoomBar({ 
position: new OpenLayers.Pixel(2, 15) 
})); 
map.addControl(new OpenLayers.Control.Navigation()); 
map.addControl(new OpenLayers.Control.LayerSwitcher()); 
map.addControl(new OpenLayers.Control.Scale($('scale'))); 
map.addControl(new OpenLayers.Control.MousePosition()); 
map.zoomToExtent(bounds); 
if (!map.getCenter()) { 
map.zoomToMaxExtent(); 
} 
} 
function showPopup() {//弹出层 
var objDiv = document.getElementById("popDiv"); 
objDiv.style.top = "50px";//设置弹出层距离上边界的距离 
objDiv.style.left = "200px";//设置弹出层距离左边界的距离 
objDiv.style.width = "300px";//设置弹出层的宽度 
objDiv.style.height = "220px";//设置弹出层的高度 
//objDiv.style.display = "block"; 
objDiv.style.visibility = "visible"; 
} 
function hidePopup() {//关闭层 
var objDiv = document.getElementById("popDiv"); 
objDiv.style.visibility = "hidden"; 
} 
</script> 
</head> 
<body onload='init();'> 
<div id='map'> 
<div id="operator"><!--按钮所在div--> 
<input name="" type="button"  value="操作" /> 
</div> 
<div id="popDiv"><!--弹出层--> 
<div id="popTitle"> <!-- 标题div --> 
<span class="title_left">修改操作</span> <span class="title_right"> 
<a href="#" >关闭</a> </span> 
</div> 
<div id="popForm"> <!-- 表单div --> 
<form action="insert_map.jsp" method="post"> 
<p> 
    ID :<input type="text" name="id" value="0" /> </br> 
名  称 :<input type="text" name="name" value="aaa" /> </br> 
电压等级 :<input type="text" name="voltage_level" value="110kv" /> </br> 
经  度 :<input type="text" name="lon" value="121." /> </br> 
纬  度 :<input type="text" name="lat" value="28." /> </br> 
</p> 
   <input type="submit" value="提交" />   
   <input type="reset" value="重置" />   
   <input type="reset" value="取消"  /> 
</form> 
</div> 
</div> 
</div> 
<script type="text/javascript"> 
/*-------------------------鼠标左键拖动---------------------*/ 
/*--------当不需要实现此功能时，可以将这一部分代码删除------------*/ 
var objDiv = document.getElementById("popDiv"); 
var isIE = document.all ? true : false;//判断浏览器类型 
document.onmousedown = function(evnt) {//当鼠标左键按下后执行此函数 
var evnt = evnt ? evnt : event; 
if (evnt.button == (document.all ? 1 : 0)) { 
mouseD = true;//mouseD为鼠标左键状态标志，为true时表示左键被按下 
} 
} 
objDiv.onmousedown = function(evnt) { 
objDrag = this;//objDrag为拖动的对象 
var evnt = evnt ? evnt : event; 
if (evnt.button == (document.all ? 1 : 0)) { 
mx = evnt.clientX; 
my = evnt.clientY; 
objDiv.style.left = objDiv.offsetLeft + "px"; 
objDiv.style.top = objDiv.offsetTop + "px"; 
if (isIE) { 
objDiv.setCapture(); 
//objDiv.filters.alpha.opacity = 50;//当鼠标按下后透明度改变 
} else { 
window.captureEvents(Event.MOUSEMOVE);//捕获鼠标拖动事件 
//objDiv.style.opacity = 0.5;//当鼠标按下后透明度改变 
} 
} 
} 
document.onmouseup = function() { 
mouseD = false;//左键松开 
objDrag = ""; 
if (isIE) { 
objDiv.releaseCapture(); 
//objDiv.filters.alpha.opacity = 100;//当鼠标左键松开后透明度改变 
} else { 
window.releaseEvents(objDiv.MOUSEMOVE);//释放鼠标拖动事件 
//objDiv.style.opacity = 1;//当鼠标左键松开后透明度改变 
} 
} 
document.onmousemove = function(evnt) { 
var evnt = evnt ? evnt : event; 
if (mouseD == true && objDrag) { 
var mrx = evnt.clientX - mx; 
var mry = evnt.clientY - my; 
objDiv.style.left = parseInt(objDiv.style.left) + mrx + "px"; 
objDiv.style.top = parseInt(objDiv.style.top) + mry + "px"; 
mx = evnt.clientX; 
my = evnt.clientY; 
} 
} 
</script> 
</body> 
</html>

在浏览器输入：https://localhost:8080/myapp/mytestMap.html
访问到mytestMap.jsp页面，单击左上角的“操作”按钮，结果如下：

在输入框中输入测试数据，点击提交，将会提交至insert_map.jsp页面，并在insert_map.jsp页面上显示出数据库中所有的点（包括刚刚添加的这个点），效果如下图：

再次在浏览器中访问地图页面，可以看到地图上已经多出了刚刚添加的那个点，如下图：

至此，基本操作算是完成。

后续需要做的工作有：
1，使点击提交后仍然显示在当前页面，且对地图进行刷新。
2，完善delete功能、修改功能
3，点击“操作”按钮后可以选择添加、删除或修改。

[JSP] 点击地图div上的按钮实现对地图数据的入库操作

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