【高德地图API】从零开始学高德JS API（四）搜索服务——POI搜索|自动完成|输入提示|行政区域|交叉路口|自有数据检索

时间：2014-05-26 14:25:25 收藏：0 阅读：3225

摘要：

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。如果说覆盖物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，我们的地图应用才能变得有血有肉，活灵活现。

第四篇拆成了几个要点，本篇主要讲搜索服务。包括周边搜索，关键词搜索，范围搜索，搜索提示（自动完成，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

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

一、POI搜索

1、关键字查询

使用search方法，传一个关键词参数即可。

 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：

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2、输入提示

html部分：

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

JS部分：

在地图初始化时，添加【自动完成/输入提示】插件。

    //加载输入提示插件  
    mapObj.plugin(["AMap.Autocomplete"], function() {  
        //判断是否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：

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3、周边查询

使用searchNearBy方法，需要传入关键词，中心点经纬度，搜索半径。

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

全部代码：

//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;  
    //加载服务插件，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：

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4、可视区域查询 5、范围内查询

范围内查询，可以是多边形，可以是圆形，也可以是矩形。

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，与范围即可。

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，这时可以获取整个可视区域，把这个区域传给范围内搜索即可。

mapObj.getBounds(); //获取可视区域范围

全部代码：

//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() { //加载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：

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6、道路查询（交叉口）

如果要查询北京的101国道，需要传参数‘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：

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7、自有数据检索（不需要数据库）

检索自有数据，是我的最爱。其实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

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批量导入自有数据，或者手工添加自有数据。

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点击预览，即可获得自己的地图！比如这样的：http://yuntu.amap.com/share/MZVB3y

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进行云检索，需要获得自己的tableID：

//叠加云数据图层  
function addCloudLayer() {  
    clearMap();
    //加载云图层插件  
    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 
}

更多详细教程，可以查看：

《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

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

全部源代码：

<!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=23e8cfe2d8f3ce1e4a4197902d28f445"></script>
</head>
<body onLoad="mapInit()">
    <div class="autoclass">
        <input type="text" id="keyword" name="keyword" value="" style="width: 95%;"/>  
        <div id="result1" class="autobox" name="result1"></div>
    </div>
    <div id="iCenter"></div>
    <div id="iControlbox">
        <p>坐标：<span id="lnglat">&nbsp;</span></p>
        <ul>
            <li>
                <button onclick="javascript:placeSearch1();">关键词搜索</button>
                <button onclick="javascript:clearMap();">清空地图</button>
            </li>
            <li>
                <button onclick="javascript:placeSearch2();">周边查询</button>
                <button onclick="javascript:clearMap();">清空地图</button>
            </li>
            <li>
                <button onclick="javascript:placeSearch3();">范围内查询</button>
                <button onclick="javascript:clearMap();">清空地图</button>
            </li>
            <li>
                <button onclick="javascript:roadCrossSearchByRoadName();">道路查询</button>
                <button onclick="javascript:clearMap();">清空地图</button>
            </li>
            <li>
                <button onclick="javascript:addCloudLayer();">云图</button>
            </li>
        </ul>
    </div>
    <div id="result"></div>
<!-- tongji begin-->
<script type="text/javascript">
var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
document.write(unescape("%3Cscript src=‘" + _bdhmProtocol + "hm.baidu.com/h.js%3Faeff88f19045b513af7681b011cea3bd‘ type=‘text/javascript‘%3E%3C/script%3E"));
</script>
<!-- tongji end -->
</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，加载地图  
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    
    
    //加载输入提示插件  
    mapObj.plugin(["AMap.Autocomplete"], function() {  
        //判断是否IE浏览器  
        if (navigator.userAgent.indexOf("MSIE") > 0) {  
            document.getElementById("keyword").onpropertychange = autoSearch;  
        }  
        else {  
            document.getElementById("keyword").oninput = autoSearch;  
        }  
    });  
}  
//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("lnglat").innerHTML = x + "," + y;
}
//清空地图
function clearMap(){    
    mapObj.clearMap();    
    document.getElementById("result").innerHTML = ‘&nbsp;‘;
    //cloudDataLayer.setMap(null);
}
//关键词查询
function placeSearch1() {  
    clearMap();
    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", Search_CallBack);//返回地点查询结果  
        MSearch.search(‘东方明珠‘); //关键字查询  
    });  
}  

//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() {  
    clearMap();
    //加载服务插件，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", Search_CallBack);   
        //周边搜索  
        MSearch.searchNearBy("酒店", cpoint, 500);   
    });  
    var circle = new AMap.Circle({   
        center:cpoint,// 圆心位置  
        radius:500, //半径  
        strokeColor: "#F33", //线颜色  
        strokeOpacity: 1, //线透明度  
        strokeWeight: 3, //线粗细度  
        fillColor: "#ee2200", //填充颜色  
        fillOpacity: 0.35//填充透明度  
    });   
    circle.setMap(mapObj);  
}  
//范围内搜索-矩形
function placeSearch3(){  
    clearMap();  
    var arr = new Array();  
    //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() { //加载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  
    });  
}  

//添加marker&infowindow      
function addmarker(i, d) {  
    var lngX = d.location.getLng();  
    var latY = d.location.getLat();  
    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\">&nbsp;&nbsp;" + (i + 1) + ". " + d.name + "</font></h3>" + TipContents(d.type, d.address, 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) {  //窗体内容  
    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 = "&nbsp;&nbsp;地址：" + address + "<br />&nbsp;&nbsp;电话：" + tel + " <br />&nbsp;&nbsp;类型：" + type;  
    return str;  
}  
function openMarkerTipById1(pointid, thiss) {  //根据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  
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);  
}  
//输出输入提示结果的回调函数  
function autocomplete_CallBack(data) {  
    var resultStr = "";  
    var tipArr = [];  
    tipArr = data.tips;  
    if (tipArr.length>0) {                    
        for (var i = 0; i < tipArr.length; i++) {  
            resultStr += "<div id=‘divid" + (i + 1) + "‘ onmouseover=‘openMarkerTipById(" + (i + 1)  
                        + ",this)‘ onclick=‘selectResult(" + i + ")‘ onmouseout=‘onmouseout_MarkerStyle(" + (i + 1)  
                        + ",this)‘ style=\"font-size: 13px;cursor:pointer;padding:5px 5px 5px 5px;\">" + tipArr[i].name + "<span style=‘color:#C1C1C1;‘>"+ tipArr[i].district + "</span></div>";  
        }  
    }  
    else  {  
        resultStr = " π__π 亲,人家找不到结果!<br />要不试试：<br />1.请确保所有字词拼写正确<br />2.尝试不同的关键字<br />3.尝试更宽泛的关键字";  
    }  
     
    document.getElementById("result1").innerHTML = resultStr;  
    document.getElementById("result1").style.display = "block";  
}  
  
//输入提示框鼠标滑过时的样式  
function openMarkerTipById(pointid, thiss) {  //根据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 = "";  
}  
  
//从输入提示框中选择关键字并查询  
function selectResult(index) {  
    if (navigator.userAgent.indexOf("MSIE") > 0) {  
        document.getElementById("keyword").onpropertychange = null;  
        document.getElementById("keyword").onfocus = focus_callback;  
    }  
    //截取输入提示的关键字部分  
    var text = document.getElementById("divid" + (index + 1)).innerHTML.replace(/<[^>].*?>.*<\/[^>].*?>/g,"");;  
    document.getElementById("keyword").value = text;  
    document.getElementById("result1").style.display = "none";  
    //根据选择的输入提示关键字查询  
    mapObj.plugin(["AMap.PlaceSearch"], function() {          
        var msearch = new AMap.PlaceSearch();  //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.search(text);  //关键字查询查询  
    });  
}  
  
//定位选择输入提示关键字  
function focus_callback() {  
    if (navigator.userAgent.indexOf("MSIE") > 0) {  
        document.getElementById("keyword").onpropertychange = autoSearch;  
   }  
}  
//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);  
    //清空本次搜索的marker和windowsArr  
    marker=[];  
    windowsArr=[];  
}    
function roadCrossSearch_CallBack(data){  
    mapObj.clearMap();  
    //document.getElementById("textUniqId").value = data.uniqid;  
    var resultStr="";    
    if(data.status =="E0") {    
        var marker = new Array();    
        for (var i = 0; i < data.list.length; i++) {    
            resultStr += "<div id=‘divid"+(i+1)+"‘ onmouseover=‘openMarkerTipById1("+(i)+",this)‘ onmouseout=‘onmouseout_MarkerStyle("+(i+1)+",this)‘ style=\"font-size: 13px;cursor:pointer;padding:2px 0 10px 5px;\"><b>"+(i+1)+"、"+data.list[i].roadname2+"和"+data.list[i].roadname1+"交叉口</b>"+"<br \/></div>";    
        resultStr += "<div>道路交叉口坐标："+data.list[i].x+","+data.list[i].y+"<br></div>";    
        addmarker2(i,data.list[i]);    
        }    
        mapObj.setFitView();    
    }    
    else if(data.status =="E1")    
    {    
         resultStr = "未查找到任何结果!<br />建议：<br />1.请确保所有字词拼写正确。<br />2.尝试不同的关键字。<br />3.尝试更宽泛的关键字。";       
    }    
    else    
    {    
         resultStr= "错误信息："+data.state+"请对照API Server v2.0.0 简明提示码对照表查找错误类型";    
    }    
    document.getElementById("result").innerHTML = resultStr;    
}
function addmarker2(i,d){    
    var markerOption = {  
        map:mapObj,               
        icon:"http://webapi.amap.com/images/point.png",    
        position:new AMap.LngLat(d.x,d.y),    
        offset:{x:-8,y:-9}    
    };                
    var mar =new AMap.Marker(markerOption);    
    marker.push(new AMap.LngLat(d.x,d.y));  
    var infoWindow = new AMap.InfoWindow({    
        content:"&nbsp;&nbsp;"+(i+1) + ". "+ d.roadname2 +"和"+d.roadname1+"交叉口"+"<br />",    
        size:new AMap.Size(300,0),    
        autoMove:true  
    });    
    windowsArr.push(infoWindow);    
     
    var aa=function(e){infoWindow.open(mapObj,mar.getPosition());};    
    AMap.event.addListener(mar,"click",aa);    
}  

//叠加云数据图层  
function addCloudLayer() {  
    clearMap();
    //加载云图层插件  
    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 
        
        AMap.event.addListener(cloudDataLayer, ‘click‘, function (result) {  
            var clouddata = result.data;  
            var infoWindow = new AMap.InfoWindow({  
                content:"<h3>"+ clouddata._name + "</h3>" + "<p>分类：" + clouddata.tag + "</p><p>一句话："+ clouddata.content +"</p>",  
                size:new AMap.Size(300, 0),  
                autoMove:true,  
                offset:new AMap.Pixel(0,-5)  
            });                
            infoWindow.open(mapObj, clouddata._location);              
        });  
        AMap.event.addListener(mapObj,"click",function(){
            mapObj.clearInfoWindow();
        });        
    });  
}  
</script>
</html>

View Code

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