我想在地图中创建一个路径线，我从数据库中的表中获取经度和纬度
（注意：坐标的类型是String）
。
我用primefaces gmap来做这件事。This is the link of the showcase
我修改了代码：我将它与ejb相关联以从数据库获取坐标。这是我的代码
@ManagedBean
@ViewScoped
public class InfoWindowView implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
//private List<String> Listlat ;
//private List<String> Listlng;
@EJB
GestionAnalyseLocal m;
private MapModel advancedModel;
private Marker marker;
@PostConstruct
public void init() {
advancedModel = new DefaultMapModel();
try {
Analyse aly = new Analyse();// this the class persistance that create the table in database
do {
String x =aly.getLatitude();
String y =aly.getLongitude();
LatLng coord1 = new LatLng (Double.parseDouble(y), Double.parseDouble(x));
advancedModel.addOverlay(new Marker(coord1, "Konyaalti", "konyaalti.png", "http://maps.google.com/mapfiles/ms/micons/blue-dot.png"));
}while (aly.getId() == 3990);
}
catch (Exception e) {
System.out.println("erreur" + e);
e.printStackTrace();
}
}
public MapModel getAdvancedModel() {
return advancedModel;
}
public void onMarkerSelect(OverlaySelectEvent event) {
marker = (Marker) event.getOverlay();
}
public Marker getMarker() {
return marker;
}
}
这是xhtml页面：
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:jsf="http://xmlns.jcp.org/jsf"
xmlns:pt="http://xmlns.jcp.org/jsf/passthrough"
xmlns:p="http://primefaces.org/ui">
<h:head>
<script src="http://maps.google.com/maps/api/js?sensor=false"
type="text/javascript"></script>
</h:head>
<h:body>
<h:form>
<p:gmap id="gmap" center="36.890257,30.707417" zoom="13" type="HYBRID" model="#{infoWindowView.advancedModel}" style="width:100%;height:400px">
<p:ajax event="overlaySelect" listener="#{infoWindowView.onMarkerSelect}" />
<p:gmapInfoWindow id="infoWindow">
<p:outputPanel style="text-align: center; display: block; margin: auto">
<p:graphicImage name="/demo/images/antalya/#{infoWindowView.marker.data}" height="150" />
<br />
<h:outputText value="#{infoWindowView.marker.title}" />
</p:outputPanel>
</p:gmapInfoWindow>
</p:gmap>
<!-- Preload for demo -->
<p:outputPanel style="display:none">
<p:graphicImage name="/demo/images/antalya/konyaalti.png" />
<p:graphicImage name="/demo/images/antalya/ataturkparki.png" />
<p:graphicImage name="/demo/images/antalya/kaleici.png" />
<p:graphicImage name="/demo/images/antalya/karaalioglu.png" />
</p:outputPanel>
</h:form>
</h:body>
</ui:composition>
但我终于得到了没有标记的地图，我得到了这个错误：
16:59:25,700 INFO [stdout] (default task-42) erreurjava.lang.NullPointerException
16:59:25,701 ERROR [stderr] (default task-42) java.lang.NullPointerException
16:59:25,703 ERROR [stderr] (default task-42) at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1838)
16:59:25,703 ERROR [stderr] (default task-42) at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110)
16:59:25,704 ERROR [stderr] (default task-42) at java.lang.Double.parseDouble(Double.java:538)
16:59:25,704 ERROR [stderr] (default task-42) at beans.InfoWindowView.init(InfoWindowView.java:66)
16:59:25,705 ERROR [stderr] (default task-42) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
16:59:25,705 ERROR [stderr] (default task-42) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
16:59:25,706 ERROR [stderr] (default task-42) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
16:59:25,706 ERROR [stderr] (default task-42) at java.lang.reflect.Method.invoke(Method.java:497)
16:59:25,707 ERROR [stderr] (default task-42) at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.invokeMethods(DefaultLifecycleCallbackInvoker.java:98)
16:59:25,707 ERROR [stderr] (default task-42) at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.postConstruct(DefaultLifecycleCallbackInvoker.java:81)
16:59:25,708 ERROR [stderr] (default task-42) at org.jboss.weld.injection.producer.BasicInjectionTarget.postConstruct(BasicInjectionTarget.java:126)
16:59:25,708 ERROR [stderr] (default task-42) at org.jboss.as.weld.deployment.processors.WeldComponentIntegrationProcessor$3.run(WeldComponentIntegrationProcessor.java:196)
16:59:25,709 ERROR [stderr] (default task-42) at org.jboss.as.weld.deployment.processors.WeldComponentIntegrationProcessor$AbstractInjectionTargetDelegatingInterceptor.processInvocation(WeldComponentIntegrationProcessor.java:260)
16:59:25,710 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,710 ERROR [stderr] (default task-42) at org.jboss.as.weld.injection.WeldInjectionInterceptor.processInvocation(WeldInjectionInterceptor.java:53)
16:59:25,710 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,711 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.ManagedReferenceFieldInjectionInterceptorFactory$ManagedReferenceFieldInjectionInterceptor.processInvocation(ManagedReferenceFieldInjectionInterceptorFactory.java:107)
16:59:25,711 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,712 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.AroundConstructInterceptorFactory$1.processInvocation(AroundConstructInterceptorFactory.java:28)
16:59:25,712 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,713 ERROR [stderr] (default task-42) at org.jboss.as.weld.injection.WeldInterceptorInjectionInterceptor.processInvocation(WeldInterceptorInjectionInterceptor.java:56)
16:59:25,713 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,714 ERROR [stderr] (default task-42) at org.jboss.as.weld.injection.WeldInjectionContextInterceptor.processInvocation(WeldInjectionContextInterceptor.java:43)
16:59:25,715 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,715 ERROR [stderr] (default task-42) at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45)
16:59:25,715 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,716 ERROR [stderr] (default task-42) at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)
16:59:25,716 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,721 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
16:59:25,722 ERROR [stderr] (default task-42) at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)
16:59:25,722 ERROR [stderr] (default task-42) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
16:59:25,722 ERROR [stderr] (default task-42) at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
16:59:25,723 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:161)
16:59:25,723 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:134)
16:59:25,723 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:99)
16:59:25,724 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.ComponentRegistry$ComponentManagedReferenceFactory.getReference(ComponentRegistry.java:171)
16:59:25,724 ERROR [stderr] (default task-42) at org.jboss.as.ee.component.ComponentRegistry.createInstance(ComponentRegistry.java:87)
16:59:25,724 ERROR [stderr] (default task-42) at org.jboss.as.web.common.WebInjectionContainer.newInstance(WebInjectionContainer.java:77)
16:59:25,724 ERROR [stderr] (default task-42) at org.jboss.as.jsf.injection.JSFInjectionProvider.invokePostConstruct(JSFInjectionProvider.java:68)
16:59:25,725 ERROR [stderr] (default task-42) at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:221)
16:59:25,725 ERROR [stderr] (default task-42) at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:103)
16:59:25,726 ERROR [stderr] (default task-42) at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
16:59:25,726 ERROR [stderr] (default task-42) at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
16:59:25,726 ERROR [stderr] (default task-42) at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:257)
16:59:25,727 ERROR [stderr] (default task-42) at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:117)
16:59:25,727 ERROR [stderr] (default task-42) at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
16:59:25,727 ERROR [stderr] (default task-42) at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
16:59:25,730 ERROR [stderr] (default task-42) at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116)
16:59:25,730 ERROR [stderr] (default task-42) at com.sun.el.parser.AstValue.getBase(AstValue.java:151)
16:59:25,730 ERROR [stderr] (default task-42) at com.sun.el.parser.AstValue.getValue(AstValue.java:200)
16:59:25,731 ERROR [stderr] (default task-42) at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
16:59:25,731 ERROR [stderr] (default task-42) at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
16:59:25,731 ERROR [stderr] (default task-42) at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
16:59:25,732 ERROR [stderr] (default task-42) at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
16:59:25,732 ERROR [stderr] (default task-42) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
16:59:25,732 ERROR [stderr] (default task-42) at org.primefaces.component.gmap.GMap.getModel(GMap.java:117)
16:59:25,733 ERROR [stderr] (default task-42) at org.primefaces.component.gmap.GMapRenderer.encodeOverlays(GMapRenderer.java:124)
16:59:25,733 ERROR [stderr] (default task-42) at org.primefaces.component.gmap.GMapRenderer.encodeScript(GMapRenderer.java:87)
16:59:25,733 ERROR [stderr] (default task-42) at org.primefaces.component.gmap.GMapRenderer.encodeEnd(GMapRenderer.java:51)
16:59:25,734 ERROR [stderr] (default task-42) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919)
16:59:25,770 ERROR [stderr] (default task-42) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
16:59:25,770 ERROR [stderr] (default task-42) at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
16:59:25,771 ERROR [stderr] (default task-42) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
16:59:25,771 ERROR [stderr] (default task-42) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
16:59:25,771 ERROR [stderr] (default task-42) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
16:59:25,772 ERROR [stderr] (default task-42) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
16:59:25,772 ERROR [stderr] (default task-42) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:456)
16:59:25,772 ERROR [stderr] (default task-42) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
16:59:25,773 ERROR [stderr] (default task-42) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
16:59:25,773 ERROR [stderr] (default task-42) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
16:59:25,773 ERROR [stderr] (default task-42) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
16:59:25,774 ERROR [stderr] (default task-42) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
16:59:25,774 ERROR [stderr] (default task-42) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
16:59:25,774 ERROR [stderr] (default task-42) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:655)
16:59:25,775 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)
16:59:25,775 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
16:59:25,775 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
16:59:25,776 ERROR [stderr] (default task-42) at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
16:59:25,776 ERROR [stderr] (default task-42) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
16:59:25,777 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
16:59:25,777 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
16:59:25,777 ERROR [stderr] (default task-42) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
16:59:25,778 ERROR [stderr] (default task-42) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
16:59:25,778 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
16:59:25,778 ERROR [stderr] (default task-42) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
16:59:25,779 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:72)
16:59:25,779 ERROR [stderr] (default task-42) at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
16:59:25,779 ERROR [stderr] (default task-42) at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
16:59:25,780 ERROR [stderr] (default task-42) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
16:59:25,780 ERROR [stderr] (default task-42) at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
16:59:25,783 ERROR [stderr] (default task-42) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
16:59:25,784 ERROR [stderr] (default task-42) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
16:59:25,784 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)
16:59:25,784 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)
16:59:25,785 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)
16:59:25,785 ERROR [stderr] (default task-42) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)
16:59:25,785 ERROR [stderr] (default task-42) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)
16:59:25,786 ERROR [stderr] (default task-42) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)
16:59:25,786 ERROR [stderr] (default task-42) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
16:59:25,787 ERROR [stderr] (default task-42) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
16:59:25,787 ERROR [stderr] (default task-42) at java.lang.Thread.run(Thread.java:745)