Question

我正在尝试从地图上删除一个圆形图层以绘制一个新图层。

我尝试了不同的解决方案，但没有一个对我有用。

也许有人可以找到方法。

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2019-09-19 13:29:15.501 ERROR DESKTOP-43PHFNJ --- [ main] o.s.b.SpringApplication : Application run failed org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'routeControllerEndpoint' defined in class path resource [org/apache/camel/spring/boot/actuate/endpoint/CamelRouteControllerEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'routeControllerEndpoint' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camelContext' defined in class path resource [org/apache/camel/spring/boot/CamelAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.camel.impl.DefaultCamelContext] from ClassLoader [ParallelWebappClassLoader context: EventFlow delegate: false ----------> Parent Classloader: java.net.URLClassLoader@eec5a4a ] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:156) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:151) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:131) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91) at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:171) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5135) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:978) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1849) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:773) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:932) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:633) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:344) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:475) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'routeControllerEndpoint' defined in class path resource [org/apache/camel/spring/boot/actuate/endpoint/CamelRouteControllerEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'routeControllerEndpoint' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camelContext' defined in class path resource [org/apache/camel/spring/boot/CamelAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.camel.impl.DefaultCamelContext] from ClassLoader [ParallelWebappClassLoader context: EventFlow delegate: false ----------> Parent Classloader: java.net.URLClassLoader@eec5a4a ] at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:607) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:211) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:202) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addServletContextInitializerBeans(ServletContextInitializerBeans.java:96) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.(ServletContextInitializerBeans.java:85) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans(ServletWebServerApplicationContext.java:253) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize(ServletWebServerApplicationContext.java:227) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:184) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:153) ... 49 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'routeControllerEndpoint' defined in class path resource [org/apache/camel/spring/boot/actuate/endpoint/CamelRouteControllerEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'routeControllerEndpoint' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camelContext' defined in class path resource [org/apache/camel/spring/boot/CamelAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.camel.impl.DefaultCamelContext] from ClassLoader [ParallelWebappClassLoader context: EventFlow delegate: false ----------> Parent Classloader: java.net.URLClassLoader@eec5a4a ] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) ... 66 more Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'routeControllerEndpoint' defined in class path resource [org/apache/camel/spring/boot/actuate/endpoint/CamelRouteControllerEndpointAutoConfiguration.class]: Unsatisfied dependency expressed through method 'routeControllerEndpoint' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camelContext' defined in class path resource [org/apache/camel/spring/boot/CamelAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.camel.impl.DefaultCamelContext] from ClassLoader [ParallelWebappClassLoader context: EventFlow delegate: false ----------> Parent Classloader: java.net.URLClassLoader@eec5a4a ] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1105) at org.springframework.boot.actuate.endpoint.annotation.EndpointDiscoverer.createEndpointBean(EndpointDiscoverer.java:141) at org.springframework.boot.actuate.endpoint.annotation.EndpointDiscoverer.createEndpointBeans(EndpointDiscoverer.java:131) at org.springframework.boot.actuate.endpoint.annotation.EndpointDiscoverer.discoverEndpoints(EndpointDiscoverer.java:120) at org.springframework.boot.actuate.endpoint.annotation.EndpointDiscoverer.getEndpoints(EndpointDiscoverer.java:114) at org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.servletEndpointRegistrar(ServletEndpointManagementContextConfiguration.java:72) at org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration$$EnhancerBySpringCGLIB$$4e33dbcc.CGLIB$servletEndpointRegistrar$0() at org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration$$EnhancerBySpringCGLIB$$4e33dbcc$$FastClassBySpringCGLIB$$4ca9b4f2.invoke() at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) at org.springframework.boot.actuate.autoconfigure.endpoint.web.ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration$$EnhancerBySpringCGLIB$$4e33dbcc.servletEndpointRegistrar() at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 67 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camelContext' defined in class path resource [org/apache/camel/spring/boot/CamelAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.camel.impl.DefaultCamelContext] from ClassLoader [ParallelWebappClassLoader context: EventFlow

我什至尝试添加一个图层组并为其添加一个圆，然后使用removeLayer（）和clearLayers（）将其删除，就像有人在Stack Overflow中使用它来解决同一问题一样。

Answer 1

您有两个名为circle的变量。第一个在onMapClick外部定义，并且从未初始化。在检查前者是否具有值之后，在onMapClick中定义并初始化具有相同名称的第二个对象。您只需要重构onMapClick：

    function onMapClick(e) {
        if (circles != undefined) {
            mymap.removeLayer(circles);
        }
        if (document.getElementById("umkreis").value == "--") {
            alert("nothing");
        }
        else {
            var fence = document.getElementById("umkreis").value * 100;
            alert(fence);
        }
        latitude = e.latlng.lat;
        longitude = e.latlng.lng;
        circles = L.circle([latitude, longitude], {
            color: 'red',
            fillColor: '#f03',
            fillOpacity: 0.5,
            radius: fence
        }).addTo(mymap);
        //alert("Latitude: " + e.latlng.lat + " Longitude: " + e.latlng.lng);
    }

Answer 2

现在可以使用的小提琴的编辑版本：

<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">

<meta charset="utf-8" />

<title></title>    

<link rel="stylesheet" href="https://unpkg.com/leaflet@1.5.1/dist/leaflet.css"
    integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
    crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.5.1/dist/leaflet.js"
   integrity="sha512-GffPMF3RvMeYyc1LWMHtK8EbPv0iNZ8/oTtHPx9/cc2ILxQ+u905qIwdpULaqDkyBKgOaB57QTMg7ztg8Jm2Og=="
   crossorigin="">
</script>
<script src="Scripts/jquery-3.4.1.min.js"></script>
<script>

</script>
<style type="text/css">
    #mapid {height: 480px; width: 480px;}
</style>
</head>
<body>
    <div id="mapid">
    </div>
    <p>Umkreis Km<select id="umkreis">
        <option value="--">--</option>
        <option value="10">10</option>
        <option value="20">20</option>
        <option value="50">50</option>
    </select></p>
    <script>

        var latitude = 0;
        var longitude = 0;
        var circles;
        // Creating the Map
        var mymap = L.map('mapid').setView([53.079, 8.801], 13);
        L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
            attribution: 'Map data&copy;<a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
            maxZoom: 18,
            id: 'mapbox.streets',
            accessToken: 'pk.eyJ1IjoicGVpY2tlciIsImEiOiJjazBveW9pcmQwZWV0M25vMHh4dnRkdmM3In0.JwNOtv10EsQrukcXe-Q2sQ'
        }).addTo(mymap);

        function onMapClick(e) {

            //circles.remove();
            //if (mymap.hasLayer(circles)) {
            //    alert("yes");
            //}

            if (circles != undefined) {
                mymap.removeLayer(circles);
                mymap.clearLayers();
            }
            if (document.getElementById("umkreis").value == "--") {
                alert("nothing");
            }
            else {
                var fence = document.getElementById("umkreis").value * 100;
                alert(fence);
            }
            latitude = e.latlng.lat;
            longitude = e.latlng.lng;
             circles = L.circle([latitude, longitude], {
                color: 'red',
                fillColor: '#f03',
                fillOpacity: 0.5,
                radius: fence
            }).addTo(mymap);
            //alert("Latitude: " + e.latlng.lat + " Longitude: " + e.latlng.lng);
        }
        mymap.on('click', onMapClick);


    </script>
</body>
</html>

传单->删除CircleLayer不起作用

2 个答案: