Flex与java通信最简单例子(详细说明了各种需要注意的配置):http://blog.csdn.net/u010011052/article/details/9116869
Flex与java通信(java查询数据库返回List,Flex调用java展示数据):http://blog.csdn.net/u010011052/article/details/9116871
Flex与java通信(java解析xml返回List,Flex调用java展示数据):http://blog.csdn.net/u010011052/article/details/9127643
这个例子展示的意思是:
java解析xml 并返回一个比较复杂的实体对象集合;
并将遍历出来的数据塞到一个新的ArrayCollection中,用DataGrid进行数据的展示。
这里的重点不在java,而是Flex的显示。
1、java项目中(为树状xml设计的实体类)
这个实体类稍显复杂,这样写是为了根节点能对应子节点,可能有更方便的写法,希望大家可以提出好的建议,
package tobaccoTrans.entity; import java.io.Serializable; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @author DWJ */ public class UserNode implements Serializable { private String provinceId; private String provinceName; // key=proviceId value=[cityid,cityname] private List<String[]> cities; // key=proviceId_cityId value=[disId,disName] private Map<String,List<String[]>> disMap; // key=proviceId_cityId_disId value=[nodeId,nodeName] private Map<String,List<String[]>> nodeMap; public String getProvinceId() { return provinceId; } public void setProvinceId(String provinceId) { this.provinceId = provinceId; } public String getProvinceName() { return provinceName; } public void setProvinceName(String provinceName) { this.provinceName = provinceName; } public List<String[]> getCities() { if (cities == null) { return new ArrayList<String[]>(); } return cities; } public void setCities(List<String[]> cities) { this.cities = cities; } public Map<String,List<String[]>> getdisMap() { if (disMap == null) { return new HashMap<String,List<String[]>>(); } return disMap; } public void setdisMap(Map<String,List<String[]>> disMap) { this.disMap = disMap; } public Map<String,List<String[]>> getNodeMap() { if (nodeMap == null) { return new HashMap<String,List<String[]>>(); } return nodeMap; } public void setNodeMap(Map<String,List<String[]>> nodeMap) { this.nodeMap = nodeMap; } }
2、java中的xml解析类
package tobaccoTrans.dao.impl; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.Node; import tobaccoTrans.entity.UserNode; import tobaccoTrans.util.ReadStream; /** * @author DWJ */ public class UserNodeImpl extends ReadStream{ private Document document = null; /** * @param user 用户 * @param pwd 密码 * @return List<UserNode> 以实体对象为单位的数据集合 * @throws DocumentException * 解析xml文件存储到集合中 */ public List getAllNodes(String user,String pwd){ List<UserNode> list = new ArrayList<UserNode>(); try { String path = "http://10.60.250.116/server/getnode.PHP?"; //内网地址 // String path = "http://www.yancao18.com/server/getnode.PHP?"; //外网地址 path += "user="+user+"&pwd="+pwd; document = this.Read(path.trim()); Element root = document.getRootElement(); //获取省份下各节点 List<Node> nodes = root.selectNodes("/root/pnode/province"); Iterator iter = nodes.iterator(); while (iter.hasNext()) { UserNode provinceInfo = new UserNode(); Map<String,List<String[]>> disMap = new HashMap<String,List<String[]>>(); Map<String,List<String[]>> nodeMap = new HashMap<String,List<String[]>>(); Element proviceElement = (Element) iter.next(); String provinceId = proviceElement.elementText("pid"); String provinceName = proviceElement.elementText("pname"); provinceInfo.setProvinceId(provinceId); provinceInfo.setProvinceName(provinceName); //获取城市下各节点 List<String[]> cityList = new ArrayList<String[]>(); List<Node> cityNodes = proviceElement.selectNodes("cnode/city"); Iterator cityIter = cityNodes.iterator(); while (cityIter.hasNext()) { String[] cityInfo = new String[2]; Element cityElement = (Element) cityIter.next(); String cityId = cityElement.elementText("cid"); String cityName = cityElement.elementText("cname"); cityInfo[0] = cityId; cityInfo[1] = cityName; //获取区域下各节点 List<String[]> disList = new ArrayList<String[]>(); String disKey = provinceId + "_" + cityId; List<Node> disNodes = cityElement.selectNodes("znode/zone"); Iterator disIter = disNodes.iterator(); while (disIter.hasNext()) { String[] disInfo = new String[2]; Element disElement = (Element) disIter.next(); String disNodeId = disElement.elementText("zid"); String disNodeName = disElement.elementText("zname"); disInfo[0] = disNodeId; disInfo[1] = disNodeName; //获取各子节点 List<String[]> nodeList = new ArrayList<String[]>(); String nodeKey = provinceId + "_" + cityId + "_" + disNodeId; List<Node> nodeNodes = disElement.selectNodes("nnode/node"); Iterator nodeIter = nodeNodes.iterator(); while (nodeIter.hasNext()) { String[] nodeInfo = new String[3]; Element nodeElement = (Element) nodeIter.next(); String nodeNodeId = nodeElement.elementText("nid"); String nodeNodeName = nodeElement.elementText("nname"); String userId = nodeElement.elementText("userid"); nodeInfo[0] = nodeNodeId; nodeInfo[1] = nodeNodeName; nodeInfo[2] = userId; nodeList.add(nodeInfo); } nodeMap.put(nodeKey,nodeList); disList.add(disInfo); } disMap.put(disKey,disList); cityList.add(cityInfo); } provinceInfo.setCities(cityList); provinceInfo.setdisMap(disMap); provinceInfo.setNodeMap(nodeMap); list.add(provinceInfo); } } catch (Exception e) { // Todo Auto-generated catch block e.printstacktrace(); } return list; } }
下面是xml解析类继承的一个读取数据流类
package tobaccoTrans.util; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.dom4j.Document; import org.dom4j.io.Domreader; /** * @author DWJ */ public class ReadStream { public static Document Read(String str) { URL url; Document document = null; try { url = new URL(str); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(6 * 1000);// 设置连接超时 if (conn.getResponseCode() != 200)throw new RuntimeException("请求rul失败!"); InputStream inputStream = (InputStream) conn.getInputStream(); DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder db = dbf.newDocumentBuilder(); org.w3c.dom.Document doc = db.parse(inputStream); // org.w3c.dom.Document doc = db.parse(new InputSource(new ByteArrayInputStream(inputStream.getBytes("utf-8")))); Domreader domreader = new Domreader(); document = domreader.read((org.w3c.dom.Document) doc); } catch (Exception e) { // Todo Auto-generated catch block e.printstacktrace(); } return document; } }
3、remoting-config.xml 配置,更对详细配置请参照:http://blog.csdn.net/u010011052/article/details/9116869
<?xml version="1.0" encoding="UTF-8"?> <service id="remoting-service" class="flex.messaging.services.RemotingService"> <adapters> <adapter-deFinition id="java-object" class="flex.messaging.services.remoting.adapters.JavaAdapter" default="true"/> </adapters> <default-channels> <channel ref="my-amf"/> </default-channels> <destination id="UserNodeImpl"> <properties> <source>tobaccoTrans.dao.impl.UserNodeImpl</source> </properties> </destination> </service>
4、Flex项目中mxml应用程序的写法
<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" initialize="init()" minWidth="955" minHeight="600"> <fx:Script> <![CDATA[ import mx.collections.ArrayCollection; import mx.events.FlexEvent; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent; [Bindable] protected function init():void { // Todo Auto-generated method stub uni.getAllNodes("zhucheng","zhucheng"); } [Bindable] var usernodeList:ArrayCollection = new ArrayCollection(); var cities:ArrayCollection = new ArrayCollection(); var newArray:ArrayCollection = new ArrayCollection(); //创建的一 protected function uni_resultHandler(event:ResultEvent):void { // Todo Auto-generated method stub //获取省份 usernodeList = event.result as ArrayCollection; var usernodeListLength:int = usernodeList.length; for(var iusernode:int = 0; iusernode < usernodeListLength; iusernode++){ var pid:String = usernodeList[iusernode].provinceId; //要显示的:省份id var pname:String = usernodeList[iusernode].provinceName; //要显示的:省份name newArray.addItem({pid:pid}); newArray.addItem({pname:pname}); //获取城市 cities = usernodeList[iusernode].cities;//iusernode var citiesLength:int = cities.length; for(var icity:int = 0; icity < citiesLength; icity++){ //cities[i]下2个子节点 var cityid:String = cities[icity][0].toString(); //要显示的:城市id var cityname:String = cities[icity][1].toString(); //要显示的:城市name newArray.addItem({cityid:cityid}); newArray.addItem({cityname:cityname}); //获取区域 var disKey:String = pid + "_" + cityid; var dismap:ArrayCollection = new ArrayCollection(); dismap = usernodeList[iusernode].disMap[disKey];//iusernode var dismapLength:int = dismap.length; for(var idis:int = 0; idis < dismapLength; idis++){ //dismap[i]下2个子节点 var disid:String = dismap[idis][0]; //要显示的:区域id var disname:String = dismap[idis][1]; //要显示的:区域name newArray.addItem({disid:disid}); newArray.addItem({disname:disname}); //获取子节点 var nodeKey:String = disKey + "_" + disid; var nodemap:ArrayCollection = new ArrayCollection(); nodemap = usernodeList[iusernode].nodeMap[nodeKey];//iusernode var nodemapLength:int = nodemap.length; for(var inode:int = 0; inode < nodemapLength; inode++){ //nodemap[i]下3个子节点 var nodeid:String = nodemap[inode][0]; //要显示的:子节点id var nodename:String = nodemap[inode][1]; //要显示的:子节点name var userid:String = nodemap[inode][2]; //要显示的:userid newArray.addItem({nodeid:nodeid}); newArray.addItem({nodename:nodename}); newArray.addItem({userid:userid}); } //获取子节点结束 } //获取区域结束 } //获取城市结束 } //获取省份结束 } //uni_resultHandler结束 [Bindable] protected function uni_faultHandler(event:FaultEvent):void { // Todo Auto-generated method stub } ]]> </fx:Script> <fx:Declarations> <!-- 将非可视元素(例如服务、值对象)放在此处 --> <s:RemoteObject id="uni" destination="UserNodeImpl" result="uni_resultHandler(event)" fault="uni_faultHandler(event)" /> </fx:Declarations> <mx:Panel x="16" y="15" width="95%" height="95%" title="展示UserNode数据Panel"> <mx:DataGrid x="15" y="15" width="92%" height="92%" id="dataGrid" dataProvider="{newArray}"> <mx:columns> <mx:DataGridColumn headerText="pid" datafield="pid" /> <mx:DataGridColumn headerText="pname" datafield="pname" /> <mx:DataGridColumn headerText="cid" datafield="cityid" /> <mx:DataGridColumn headerText="cname" datafield="cityname" /> <mx:DataGridColumn headerText="zid" datafield="disid" /> <mx:DataGridColumn headerText="zname" datafield="disname" /> <mx:DataGridColumn headerText="nid" datafield="nodeid" /> <mx:DataGridColumn headerText="nname" datafield="nodename" /> <mx:DataGridColumn headerText="userid" datafield="userid" /> </mx:columns> </mx:DataGrid> </mx:Panel> </s:Application>
注意:
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5、绑定好,运行mxml应用程序即可看到数据。
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