config.xml文件的配置如下：
<widget label="资源搜索" icon="assets/images/public_impact_over.png" config="widgets/AdvancedBusiness/AdvancedBusinessWidget.xml" url="widgets/AdvancedBusiness/AdvancedBusinessWidget.swf" />
源代码目录如下：
界面效果：
大概的思路如下：跟地图搜索的思路是一样的，不过是这里唯一变化的是可以勾选多个图层来进行query查询，其实只是进行多次循环查询不同的图层而已，核心是一样的；AdvancedBusinessWidget.xml是资源搜索模块的配置文件，AdvancedBusinessWidget.mxml是widget；AdvancedBusinessWidget.xml主要是配置资源图层搜索的服务url，用来进行query查询用，这个模块的核心其实就是调用arcgis api的query类以及queryTask
AdvancedBusinessWidget.xml：
<?xml version="1.0" ?>
<configuration label="Louisville Parcels and Police">
<layers>
<layer>
<name>危险隐患</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/0
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>true</checked>
</layer>
<layer>
<name>应急专家</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/1
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
<layer>
<name>物资装备</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/2
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
<layer>
<name>救援队伍</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/3
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
<layer>
<name>庇护场所</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/4
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
<layer>
<name>保护对象</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/5
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
<!-- <layer> -->
<!-- <name>应急仓库</name> -->
<!-- <url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/6 -->
<!-- </url> -->
<!-- <expression>NAME like '%[value]%'</expression> -->
<!-- <textsearchlabel>Search by NAME</textsearchlabel> -->
<!-- <titlefield>NAME</titlefield> -->
<!-- <linkfield></linkfield> -->
<!-- <fields all="true"> -->
<!-- <field name="NAME" /> -->
<!-- </fields> -->
<!-- <checked>false</checked> -->
<!-- </layer> -->
<layer>
<name>企业</name>
<url>http://localhost:6080/ArcGIS/rest/services/nsBusiness/MapServer/7
</url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
<layer>
<name>全选</name>
<url></url>
<expression>NAME like '%[value]%'</expression>
<textsearchlabel>按照名称搜索</textsearchlabel>
<titlefield>NAME</titlefield>
<linkfield></linkfield>
<fields all="true">
<field name="NAME" />
</fields>
<checked>false</checked>
</layer>
</layers>
<zoomscale>10000</zoomscale>
</configuration> <!-- See Search widget tag reference at http://links.esri.com/searchwidget -->
AdvancedBusinessWidgett.mxml：具体实现部分，我截图部分代码好了，具体的详见flexviewer。主要是有两种方式查询，一种是框选，另一种是关键字查询；框选查询是利用在地图框选（线 面 拉框等等）获取框选的范围Geometry，然后利用当前的Geometry作为queryTask的参数，用于query查询；输入关键字查询是类似的，不过是query的参数把geometry替换为text。
框选模式参照地图搜索部分
关键字查询：
在勾选图层的基础上循环遍历查询
private function textFilter():void{
for each(var searchLayer:Object in configSearchGraphicalArr){//configSearchGraphicalArr是勾选的图层数组 if(searchLayer.checked && searchLayer.label!="全选"){ queryFeaturesText(searchLayer); } } }
queryFeaturesText是基于关键字搜索函数：
private function queryFeaturesText(searchLayer:Object):void
{ hideInfoWindow(); queryLayer = searchLayer.layer; if (queryLayer && !queryLayer.loaded)
{
queryLayer.addEventListener(LayerEvent.LOAD, queryLayer_loadHandler);
queryLayer.addEventListener(LayerEvent.LOAD_ERROR, queryLayer_loadErrorHandler); function queryLayer_loadHandler(event:LayerEvent):void
{
queryLayer.removeEventListener(LayerEvent.LOAD, queryLayer_loadHandler);
queryLayer.removeEventListener(LayerEvent.LOAD_ERROR, queryLayer_loadErrorHandler); queryFeaturesText(queryLayer);
} function queryLayer_loadErrorHandler(event:LayerEvent):void
{
queryLayer.removeEventListener(LayerEvent.LOAD, queryLayer_loadHandler);
queryLayer.removeEventListener(LayerEvent.LOAD_ERROR, queryLayer_loadErrorHandler); showLoadErrorMessage(event);
} return;
} queryExpr = searchLayer.expr;
queryFields = searchLayer.fields;
queryTitleField = searchLayer.titlefield;
queryLinkField = searchLayer.linkfield;
queryLinkAlias = searchLayer.linkalias; if (queryLayer && txtSearch.text)
{
var query:Query = new Query();
var expr:String = queryExpr.replace(/\[value\]/g, txtSearch.text); query.where = expr;
query.outSpatialReference = map.spatialReference; const supportsServerSideSorting:Boolean = queryLayer.layerDetails
&& queryLayer.layerDetails.version >= 10.1
&& queryLayer.layerDetails.supportsAdvancedQueries;
const orderByFields:Array = searchLayer.orderbyfields;
if (supportsServerSideSorting && orderByFields)
{
query.orderByFields = orderByFields;
} var queryOptions:Object =
{
supportsServerSideSorting: supportsServerSideSorting,
orderByFields: orderByFields,
queryFields: queryFields
}; queryLayer.queryFeatures(
query, new AsyncResponder(queryFeatures_resultHandler,
queryFeatures_faultHandler,
queryOptions)); //showMessage(loadingLabel, true);
//showStateResults(); function queryFeatures_resultHandler(featureSet:FeatureSet, queryOptions:Object):void
{
/*
var layer:FeatureLayer=FeatureLayer(map.getLayer(searchLayer.label));
layer.featureCollection=new FeatureCollection(featureSet,layer.layerDetails);
layer.refresh();*/
var obj:Object=new Object();
obj.featureSet=featureSet;
obj.layerName=searchLayer.label;
obj.featureLayer=FeatureLayer(map.getLayer(searchLayer.label));
AppEvent.dispatch(BusinessEventType.TEXT_FILTER_EVENT,obj);
} function queryFeatures_faultHandler(info:Object, queryOptions:Object):void
{
showMessage(info.toString(), false);
} }
}//AppEvent.dispatch(BusinessEventType.TEXT_FILTER_EVENT,obj);这里会触发搜索结果表格事件，把搜索的结果更新到表格来展示
textFilter_Listener是展示搜索结果函数：
private function textFilter_Listener(event:AppEvent):void{
//Alert.show("The event is triggered!");
var featureSet:FeatureSet=event.data.featureSet as FeatureSet;
var layerName:String=event.data.layerName;//no use right now
var featureLayer:FeatureLayer=event.data.featureLayer as FeatureLayer;
var businessTable:CustomAttributeTable=featureLayerToAttributeTable[featureLayer];
businessTable.doSpatialFilter(featureSet); }
public function doSpatialFilter(featureSet:FeatureSet):void{
this._map.removeEventListener(ExtentEvent.EXTENT_CHANGE,extentChanged_Refresh);
this._featureSet=featureSet;
if(featureSet==null){
if(this.dataGrid&&this.skin){
this.dataGrid.dataProvider=null;
this.skin.currentState="noFeaturesInCurrentExtent";
}
}else{
if(featureSet.attributes.length>0){
if(this.dataGrid&&this.skin){
this.dataGrid.columns=this.createColumnsFromPopInfo();
this.dataGrid.dataProvider=new ArrayCollection(featureSet.attributes);
this.skin.currentState="normal";
}
}else{
if(this.dataGrid&&this.skin){
this.dataGrid.dataProvider=null;
this.skin.currentState="noFeaturesInCurrentExtent";
}
}
}
}
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