【高德地图API】从零開始学高德JS API（四）搜索服务——POI搜索|自己主动完毕|输入提示|行政区域|交叉路口|自有数据检索

地图服务。大家能想到哪些？POI搜素，输入提示，地址解析，公交导航，驾车导航，步行导航，道路查询（交叉口），行政区划等等。假设说覆盖物Marker是地图的骨骼，那么服务，就是地图的气血。

有个各种各样的地图服务。我们的地图应用才干变得有血有肉，活灵活现。第四篇拆成了几个要点，本篇主要讲搜索服务。包含周边搜索。关键词搜索。范围搜索。搜索提示（自己主动完毕，输入提示）。行政区域。交叉路口。检索自有数据（云图）。

demo：http://zhaoziang.com/amap/zero_4_1.html

 

示意图1：自己主动完毕，输入提示

 

示意图2：云图，自有数据检索，A-H图标显示。麻点图

---------------------------------------------------------------------------------------

一、POI搜索

1、关键字查询

使用search方法，传一个关键词參数就可以。

 MSearch.search('东方明珠'); //关键字查询 

 

完整代码：

//关键词查询
function placeSearch1() {  
    var MSearch;  
    mapObj.plugin(["AMap.PlaceSearch"], function() {          
        MSearch = new AMap.PlaceSearch({ //构造地点查询类  
            pageSize:10,  
            pageIndex:1,  
            city:"021" //城市  
        });   
        AMap.event.addListener(MSearch, "complete", keywordSearch_CallBack);//返回地点查询结果  
        MSearch.search('东方明珠'); //关键字查询  
    });  
}  

 

示意图：

 

2、输入提示

html部分：

    <div class="autoclass">
        <input type="text" id="keyword" name="keyword" value="" style=" 95%;"/>  
        <div id="result1" class="autobox" name="result1"></div>
    </div>

 

JS部分：

在地图初始化时，加入【自己主动完毕/输入提示】插件。

    //载入输入提示插件  
    mapObj.plugin(["AMap.Autocomplete"], function() {  
        //推断是否IE浏览器  
        if (navigator.userAgent.indexOf("MSIE") > 0) {  
            document.getElementById("keyword").onpropertychange = autoSearch;  
        }  
        else {  
            document.getElementById("keyword").oninput = autoSearch;  
        }  
    }); 

 

输入提示部分：

//输入提示  
function autoSearch() {   
    var keywords = document.getElementById("keyword").value;  
    var auto;    
    var autoOptions = {  
        pageIndex:1,  
        pageSize:10,  
        city: "" //城市，默认全国  
    };  
    auto = new AMap.Autocomplete(autoOptions);  
    //查询成功时返回查询结果  
    AMap.event.addListener(auto, "complete", autocomplete_CallBack);  
    auto.search(keywords);  
}  

 

示意图：

 

3、周边查询

使用searchNearBy方法，须要传入关键词，中心点经纬度，搜索半径。

MSearch.searchNearBy("酒店", cpoint, 500);  

 

所有代码：

//周边查询函数  
var cpoint = new AMap.LngLat(116.405467,39.907761); //搜索查询的中心点设置
function placeSearch2() {  
    var MSearch;  
    //载入服务插件。实例化地点查询类    
    mapObj.plugin(["AMap.PlaceSearch"], function() {  
        MSearch = new AMap.PlaceSearch({   
            city: "北京"  
        });   
        //查询成功时的回调函数  
        AMap.event.addListener(MSearch, "complete", keywordSearch_CallBack);   
        //周边搜索  
        MSearch.searchNearBy("酒店", cpoint, 500);   
    });  
} 

 

示意图：

 

4、可视区域查询 5、范围内查询

范围内查询，能够是多边形。能够是圆形，也能够是矩形。

我们在这里。用一个矩形搜索来举例。

使用searchInBounds方法。传入关键词，与范围就可以。

MSearch.searchInBounds("酒店", new AMap.Bounds(arr[0], arr[2])); //范围查询

 

可视区域，就是视野内查询。这时能够获取整个可视区域，把这个区域传给范围内搜索就可以。

mapObj.getBounds(); //获取可视区域范围

 

所有代码：

//范围内搜索-矩形
function placeSearch3(){  
    clearMap();  
    var arr = new Array();  
    var MSearch;  
    //绘制矩形边框     
    arr.push(new AMap.LngLat("116.423321","39.884055"));   
    arr.push(new AMap.LngLat("116.473103","39.884055"));   
    arr.push(new AMap.LngLat("116.473103","39.919348"));   
    arr.push(new AMap.LngLat("116.423321","39.919348"));  
    var polygon = new AMap.Polygon({  
        map:mapObj,   
        path:arr,   
        strokeColor:"#0000ff",   
        strokeOpacity:0.2,   
        strokeWeight:3,   
        fillColor: "#f5deb3",   
        fillOpacity: 0.8   
    });     
    mapObj.plugin(["AMap.PlaceSearch"], function() { //载入PlaceSearch服务插件        
        MSearch = new AMap.PlaceSearch({  
            pageSize: 8  
        }); //构造地点查询类  
        AMap.event.addListener(MSearch, "complete", Search_CallBack); //查询成功时的回调函数  
        MSearch.searchInBounds("酒店", new AMap.Bounds(arr[0], arr[2])); //范围查询  
    });  
}  

 

示意图：

 

 

6、道路查询（交叉口）

假设要查询北京的101国道，须要传參数‘101’和‘北京’。

//道路交叉口
function roadCrossSearchByRoadName(){    
    var roadname = '101';    
    var city2 = '北京';    
    var RoadSearchOption = {    
        number:10,//每页数量,默认10    
        batch:1,//请求页数，默认1    
        ext:""//扩展字段    
        };    
    var road = new AMap.RoadSearch(RoadSearchOption);  
    road.roadCrossSearchByRoadName(roadname,city2,roadCrossSearch_CallBack);  

}    

 

示意图：

 

7、自有数据检索（不须要数据库）

检索自有数据，是我的最爱。

事实上就是使用云图就好了。

登录云图管理台：http://yuntu.amap.com/datamanager/index.html

新建地图

 

批量导入自有数据。或者手工加入自有数据。

 

点击预览，就可以获得自己的地图！比方这种：http://yuntu.amap.com/share/MZVB3y

 

显示云图层，须要获得自己的tableID：

//叠加云数据图层  
function addCloudLayer() {  
    clearMap();
    //载入云图层插件  
    mapObj.plugin('AMap.CloudDataLayer', function () {  
        var layerOptions = {   
            query:{keywords: ''},   
            clickable:true  
        };  
        cloudDataLayer = new AMap.CloudDataLayer('533ccc56e4b08ebff7d539eb', layerOptions); //实例化云图层类  
        cloudDataLayer.setMap(mapObj); //叠加云图层到地图 
}  

 

很多其它具体教程，能够查看：

《东莞酒店云图》：http://www.cnblogs.com/milkmap/p/3657829.html

《贪官罗马图》：http://www.cnblogs.com/milkmap/p/3678377.html

《三甲医院云图》：http://www.cnblogs.com/milkmap/p/3637899.html

 

通过云图的云检索功能，检索出自有数据中的“酒店”。并用图片为A-H的标注进行标示。

云检索：

function cloudSearch(){
    var arr = new Array();      
    var search;  
    var searchOptions = {  
        keywords:'酒店',  
        orderBy:'_id:ASC'  
    };  
    //载入CloudDataSearch服务插件  
    mapObj.plugin(["AMap.CloudDataSearch"], function() {         
        search = new AMap.CloudDataSearch('5358f853e4b01214f369d851', searchOptions); //构造云数据检索类  
        AMap.event.addListener(search, "complete", cloudSearch_CallBack); //查询成功时的回调函数  
        AMap.event.addListener(search, "error", errorInfo); //查询失败时的回调函数  
        search.searchNearBy(yunPoint, 10000); //周边检索  
    }); 
}

 

检索成功的回调函数：

function cloudSearch_CallBack(data) {   
    var resultStr="";  
    var resultArr = data.datas;  
    var resultNum = resultArr.length;    
    for (var i = 0; i < resultNum; i++) {    
        resultStr += "<div id='divid" + (i+1) + "' onmouseover='openMarkerTipById1(" + i + ",this)' onmouseout='onmouseout_MarkerStyle(" + (i+1) + ",this)' style="font-size: 12px;cursor:pointer;padding:2px 0 4px 2px; border-bottom:1px solid #C1FFC1;"><table><tr><td><h3><font face="微软雅黑"color="#3366FF">" + (i+1) + "." + resultArr[i]._name + "</font></h3>";  
        resultStr += '地址：' + resultArr[i]._address + '<br/>类型：' + resultArr[i].type + '<br/>ID：' + resultArr[i]._id + "</td></tr></table></div>";  
        addmarker(i, resultArr[i]);  
    }  
    mapObj.setFitView();  
    document.getElementById("result").innerHTML = resultStr;  
}  

 

加入Marker：

//加入marker&infowindow      
function addmarker(i, d) {  
    var lngX; 
    var latY;
    var iName;
    var iAddress;
    if(d.location){
        lngX = d.location.getLng();  
        latY = d.location.getLat();  
    }else{
        lngX = d._location.getLng();  
        latY = d._location.getLat(); 
    }
    if(d.name){
        iName = d.name;
    }else{
        iName = d._name;
    }
    if(d.name){
        iAddress = d.address;
    }else{
        iAddress = d._address;
    }
    var markerOption = {  
        map:mapObj,  
        icon:"http://webapi.amap.com/images/" + (i + 1) + ".png",  
        position:new AMap.LngLat(lngX, latY)  
    };  
    var mar = new AMap.Marker(markerOption);            
    marker.push(new AMap.LngLat(lngX, latY));  
  
    var infoWindow = new AMap.InfoWindow({  
        content:"<h3><font color="#00a6ac">" + (i + 1) + ". " + iName + "</font></h3>" + TipContents(d.type, iAddress, d.tel),  
        size:new AMap.Size(300, 0),   
        autoMove:true,    
        offset:new AMap.Pixel(0,-30)  
    });  
    windowsArr.push(infoWindow);   
    var aa = function (e) {infoWindow.open(mapObj, mar.getPosition());};  
    AMap.event.addListener(mar, "click", aa);  
}  

 

效果图：

 

demo：http://zhaoziang.com/amap/zero_4_1.html

所有源码：

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>地图服务</title>
<link rel="stylesheet" type="text/css" href="zero.css" />
<script language="javascript" src="http://webapi.amap.com/maps?
v=1.2&key=caaa086bdf5666322fba3baf5a6a2c03"></script>
</head>
<body onLoad="mapInit()">
    <div id="iCenter"></div>
    <div id="iControlbox">
        <ul>
            <li>
                <button onclick="javascript:addCloudLayer();">云图</button>
                <button onclick="javascript:cloudSearch();">检索自有酒店数据</button>
                <button onclick="javascript:clearCloud();">清空云图</button>
            </li>
        </ul>
    </div>
    <div id="result"></div>
</body>
<script language="javascript">
var mapObj;  
var marker = new Array();  
var windowsArr = new Array();
var cloudDataLayer;
var MSearch;  
//初始化地图对象，载入地图  
function mapInit(){  
    mapObj = new AMap.Map("iCenter",{  
    center:new AMap.LngLat(116.397428,39.90923), //地图中心点  
    level:11  //地图显示的比例尺级别  
    }); 
    AMap.event.addListener(mapObj,'click',getLnglat); //点击事件    
}  
//鼠标点击。获取经纬度坐标  
function getLnglat(e){    
    var x = e.lnglat.getLng();
    var y = e.lnglat.getLat(); 
    document.getElementById("lnglats").innerHTML = x + "," + y;
}
function clearCloud(){
    cloudDataLayer.setMap(null);
    mapObj.clearMap();    
    document.getElementById("result").innerHTML = ' ';
}
//加入marker&infowindow      
function addmarker(i, d) {  
    var lngX; 
    var latY;
    var iName;
    var iAddress;
    if(d.location){
        lngX = d.location.getLng();  
        latY = d.location.getLat();  
    }else{
        lngX = d._location.getLng();  
        latY = d._location.getLat(); 
    }
    if(d.name){
        iName = d.name;
    }else{
        iName = d._name;
    }
    if(d.name){
        iAddress = d.address;
    }else{
        iAddress = d._address;
    }
    var markerOption = {  
        map:mapObj,  
        icon:"http://webapi.amap.com/images/" + (i + 1) + ".png",  
        position:new AMap.LngLat(lngX, latY)  
    };  
    var mar = new AMap.Marker(markerOption);            
    marker.push(new AMap.LngLat(lngX, latY));  
  
    var infoWindow = new AMap.InfoWindow({  
        content:"<h3><font color="#00a6ac">" + (i + 1) + ". " + iName + "</font></h3>" + TipContents(d.type, iAddress, d.tel),  
        size:new AMap.Size(300, 0),   
        autoMove:true,    
        offset:new AMap.Pixel(0,-30)  
    });  
    windowsArr.push(infoWindow);   
    var aa = function (e) {infoWindow.open(mapObj, mar.getPosition());};  
    AMap.event.addListener(mar, "click", aa);  
}  
//回调函数  
function Search_CallBack(data) {  
    var resultStr = "";  
    var poiArr = data.poiList.pois;  
    var resultCount = poiArr.length;  
    for (var i = 0; i < resultCount; i++) {  
        resultStr += "<div id='divid" + (i + 1) + "' onmouseover='openMarkerTipById1(" + i + ",this)' onmouseout='onmouseout_MarkerStyle(" + (i + 1) + ",this)' style="font-size: 12px;cursor:pointer;padding:0px 0 4px 2px; border-bottom:1px solid #C1FFC1;"><table><tr><td><img src="http://webapi.amap.com/images/" + (i + 1) + ".png"></td>" + "<td><h3><font color="#00a6ac">名称: " + poiArr[i].name + "</font></h3>";  
            resultStr += TipContents(poiArr[i].type, poiArr[i].address, poiArr[i].tel) + "</td></tr></table></div>";  
            addmarker(i, poiArr[i]);  
    }  
    mapObj.setFitView();  
    document.getElementById("result").innerHTML = resultStr;  
}  
function TipContents(type, address, tel) {  //窗口内容  
    if (type == "" || type == "undefined" || type == null || type == " undefined" || typeof type == "undefined") {  
        type = "暂无";  
    }  
    if (address == "" || address == "undefined" || address == null || address == " undefined" || typeof address == "undefined") {  
        address = "暂无";  
    }  
    if (tel == "" || tel == "undefined" || tel == null || tel == " undefined" || typeof address == "tel") {  
        tel = "暂无";  
    }  
    var str = "  地址：" + address + "<br />  电话：" + tel + " <br />  类型：" + type;  
    return str;  
}  
function openMarkerTipById1(pointid, thiss) {  //依据id 打开搜索结果点tip  
    thiss.style.background = '#CAE1FF';  
    windowsArr[pointid].open(mapObj, marker[pointid]);  
}  
function onmouseout_MarkerStyle(pointid, thiss) { //鼠标移开后点样式恢复  
    thiss.style.background = "";  
} 
//输入提示框鼠标滑过时的样式  
function openMarkerTipById(pointid, thiss) {  //依据id打开搜索结果点tip    
    thiss.style.background = '#CAE1FF';  
}   
//输入提示框鼠标移出时的样式  
function onmouseout_MarkerStyle(pointid, thiss) {  //鼠标移开后点样式恢复    
    thiss.style.background = "";  
}  
var yunPoint = new AMap.LngLat(120.169144,30.293164);
//叠加云数据图层  
function addCloudLayer() {  
    mapObj.setZoomAndCenter(14,yunPoint);
    //载入云图层插件  
    mapObj.plugin('AMap.CloudDataLayer', function () {  
        var layerOptions = {   
            query:{keywords: ''},   
            clickable:true  
        };  
        cloudDataLayer = new AMap.CloudDataLayer('5358f853e4b01214f369d851', layerOptions); //实例化云图层类  
        cloudDataLayer.setMap(mapObj); //叠加云图层到地图  
        AMap.event.addListener(cloudDataLayer, 'click', function (result) {  
            var clouddata = result.data;  
            var infoWindowYun = new AMap.InfoWindow({  
                content:"<h3><font face="微软雅黑"color="#3366FF">"+ clouddata._name +"</font></h3><hr />地址："+ clouddata._address + "<br />" + "创建时间：" + clouddata._createtime+ "<br />" + "更新时间：" + clouddata._updatetime,  
                size:new AMap.Size(300, 0),  
                autoMove:true,  
                offset:new AMap.Pixel(0,-5)  
            });                
            infoWindowYun.open(mapObj, clouddata._location);  
        });  
    }); 
}  
function cloudSearch(){
    var arr = new Array();      
    var search;  
    var searchOptions = {  
        keywords:'酒店',  
        orderBy:'_id:ASC'  
    };  
    //载入CloudDataSearch服务插件  
    mapObj.plugin(["AMap.CloudDataSearch"], function() {         
        search = new AMap.CloudDataSearch('5358f853e4b01214f369d851', searchOptions); //构造云数据检索类  
        AMap.event.addListener(search, "complete", cloudSearch_CallBack); //查询成功时的回调函数  
        AMap.event.addListener(search, "error", errorInfo); //查询失败时的回调函数  
        search.searchNearBy(yunPoint, 10000); //周边检索  
    }); 
}
function cloudSearch_CallBack(data) {   
    var resultStr="";  
    var resultArr = data.datas;  
    var resultNum = resultArr.length;    
    for (var i = 0; i < resultNum; i++) {    
        resultStr += "<div id='divid" + (i+1) + "' onmouseover='openMarkerTipById1(" + i + ",this)' onmouseout='onmouseout_MarkerStyle(" + (i+1) + ",this)' style="font-size: 12px;cursor:pointer;padding:2px 0 4px 2px; border-bottom:1px solid #C1FFC1;"><table><tr><td><h3><font face="微软雅黑"color="#3366FF">" + (i+1) + "." + resultArr[i]._name + "</font></h3>";  
        resultStr += '地址：' + resultArr[i]._address + '<br/>类型：' + resultArr[i].type + '<br/>ID：' + resultArr[i]._id + "</td></tr></table></div>";  
        addmarker(i, resultArr[i]);  
    }  
    mapObj.setFitView();  
    document.getElementById("result").innerHTML = resultStr;  
}  
//回调函数  
function errorInfo(data) {  
    resultStr = data.info;  
    document.getElementById("result").innerHTML = resultStr;  
}  
</script>
</html>

学到新知识了？快来2014高德LBS应用大赛操练起来吧！

http://2014lbs.amap.com/