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org.apache.sling.scripting.sightly.SightlyException: Identifier XXXX cannot be correctly instantiated by the Use API

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Level 3
Level 3
11/12/17 6:00:23 PM

Hi,

I am trying install my AEM 6.1 project on AEM 6.3. After installation and update of all POM, related code, i am able to open my project webpages. However when trying to drag and drop any component on to a sample page using my project template its failing with below exception.

13.11.2017 09:45:46.050 *ERROR* [0:0:0:0:0:0:0:1 [1510537544955] GET /content/singtel/en/Test6_3/jcr:content/par/sd_component_dualima.html HTTP/1.1] com.day.cq.wcm.core.impl.WCMDebugFilter Error during include of SlingRequestPathInfo: path='/content/singtel/en/Test6_3/jcr:content/par/sd_component_dualima', selectorString='null', extension='html', suffix='null'

org.apache.sling.scripting.sightly.SightlyException: Identifier com.singtel.springd.aem.components.singtel.dualimagecomponent.DualImageComponentController cannot be correctly instantiated by the Use API

at org.apache.sling.scripting.sightly.impl.engine.extension.use.UseRuntimeExtension.call(UseRuntimeExtension.java:77)

at org.apache.sling.scripting.sightly.impl.engine.runtime.RenderContextImpl.call(RenderContextImpl.java:75)

at org.apache.sling.scripting.sightly.apps.springd.components.global.componentTemplate_html$1.render(componentTemplate_html.java:83)

at org.apache.sling.scripting.sightly.java.compiler.RenderUnit.render(RenderUnit.java:48)

at org.apache.sling.scripting.sightly.java.compiler.RenderUnit.callUnit(RenderUnit.java:85)

at org.apache.sling.scripting.sightly.apps.springd.components.global.singtel.sd__002d__component__002d__dualimage__002d__singtel.html_html.render(html_html.java:46)

at org.apache.sling.scripting.sightly.java.compiler.RenderUnit.render(RenderUnit.java:48)

at org.apache.sling.scripting.sightly.impl.engine.SightlyCompiledScript.eval(SightlyCompiledScript.java:61)

at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:386)

at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:184)

at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:491)

at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:552)

at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:44)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:77)

at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilterWithErrorHandling(WCMDebugFilter.java:192)

at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:159)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.wcm.core.impl.WCMComponentFilter.doFilter(WCMComponentFilter.java:278)

at com.day.cq.wcm.core.impl.WCMComponentFilter.filterRootInclude(WCMComponentFilter.java:373)

at com.day.cq.wcm.core.impl.WCMComponentFilter.doFilter(WCMComponentFilter.java:190)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.personalization.impl.TargetComponentFilter.doFilter(TargetComponentFilter.java:96)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.engine.impl.SlingRequestProcessorImpl.processComponent(SlingRequestProcessorImpl.java:282)

at org.apache.sling.engine.impl.filter.RequestSlingFilterChain.render(RequestSlingFilterChain.java:49)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:71)

at com.day.cq.wcm.core.impl.warp.TimeWarpFilter.doFilter(TimeWarpFilter.java:109)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.cq.social.ugcbase.security.impl.SaferSlingPostServlet.doFilter(SaferSlingPostServlet.java:114)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.dam.core.impl.assetlinkshare.AdhocAssetShareAuthHandler.doFilter(AdhocAssetShareAuthHandler.java:436)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.dam.core.impl.servlet.ActivityRecordHandler.doFilter(ActivityRecordHandler.java:154)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:73)

at com.adobe.granite.rest.impl.servlet.ApiResourceFilter.doFilter(ApiResourceFilter.java:70)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.granite.requests.logging.impl.RequestLoggerImpl.doFilter(RequestLoggerImpl.java:126)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.granite.rest.assets.impl.AssetContentDispositionFilter.doFilter(AssetContentDispositionFilter.java:96)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.granite.csrf.impl.CSRFFilter.doFilter(CSRFFilter.java:217)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.security.impl.ContentDispositionFilter.doFilter(ContentDispositionFilter.java:180)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.wcm.core.impl.AuthoringUIModeServiceImpl.doFilter(AuthoringUIModeServiceImpl.java:367)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.wcm.mobile.core.impl.redirect.RedirectFilter.doFilter(RedirectFilter.java:248)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.singtel.springd.aem.filters.LoggingFilter.doFilter(LoggingFilter.java:36)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter.doFilter(RequestProgressTrackerLogFilter.java:107)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.cq.social.commons.cors.CORSAuthenticationFilter.doFilter(CORSAuthenticationFilter.java:91)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.wcm.foundation.forms.FormsHandlingServletHelper.handleFilter(FormsHandlingServletHelper.java:221)

at com.day.cq.wcm.foundation.forms.impl.FormsHandlingServlet.doFilter(FormsHandlingServlet.java:138)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.granite.optout.impl.OptOutFilter.doFilter(OptOutFilter.java:76)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.wcm.foundation.forms.FormsHandlingServletHelper.handleFilter(FormsHandlingServletHelper.java:221)

at com.adobe.cq.wcm.core.components.internal.servlets.CoreFormHandlingServlet.doFilter(CoreFormHandlingServlet.java:131)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.singtel.springd.aem.servlets.filter.ServletAuthenticationFilter.doFilter(ServletAuthenticationFilter.java:149)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.day.cq.wcm.core.impl.WCMRequestFilter.doFilter(WCMRequestFilter.java:90)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.cq.history.impl.HistoryRequestFilter.doFilter(HistoryRequestFilter.java:122)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.cq.mcm.campaign.servlets.CampaignCopyTracker.doFilter(CampaignCopyTracker.java:100)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.rewriter.impl.RewriterFilter.doFilter(RewriterFilter.java:83)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at com.adobe.granite.httpcache.impl.InnerCacheFilter.doFilter(InnerCacheFilter.java:81)

at com.adobe.granite.httpcache.impl.InnerCacheFilter.doFilter(InnerCacheFilter.java:60)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:138)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:73)

at com.adobe.granite.resourceresolverhelper.impl.ResourceResolverHelperImpl.doFilter(ResourceResolverHelperImpl.java:83)

at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)

at org.apache.sling.engine.impl.SlingRequestProcessorImpl.doProcessRequest(SlingRequestProcessorImpl.java:151)

at org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:219)

at org.apache.felix.http.base.internal.handler.ServletHandler.handle(ServletHandler.java:85)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:79)

at com.adobe.granite.license.impl.LicenseCheckFilter.doFilter(LicenseCheckFilter.java:308)

at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)

at org.apache.felix.http.sslfilter.internal.SslFilter.doFilter(SslFilter.java:96)

at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)

at org.apache.sling.security.impl.ReferrerFilter.doFilter(ReferrerFilter.java:295)

at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)

at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:138)

at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)

at org.apache.sling.featureflags.impl.FeatureManager.doFilter(FeatureManager.java:116)

at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)

at org.apache.sling.engine.impl.log.RequestLoggerFilter.doFilter(RequestLoggerFilter.java:72)

at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:135)

at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:74)

at org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispatcher.java:128)

at org.apache.felix.http.base.internal.dispatch.DispatcherServlet.service(DispatcherServlet.java:49)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)

at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)

at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)

at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)

at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)

at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)

at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)

at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)

at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)

at org.eclipse.jetty.server.Server.handle(Server.java:499)

at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)

at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)

at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)

at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)

at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.apache.sling.models.factory.MissingElementsException: Could not inject all required fields into class com.singtel.springd.aem.components.singtel.dualimagecomponent.DualImageComponentController

at org.apache.sling.models.impl.ModelAdapterFactory.createObject(ModelAdapterFactory.java:593)

at org.apache.sling.models.impl.ModelAdapterFactory.internalCreateModel(ModelAdapterFactory.java:335)

at org.apache.sling.models.impl.ModelAdapterFactory.createModel(ModelAdapterFactory.java:223)

at org.apache.sling.scripting.sightly.models.impl.SlingModelsUseProvider.provide(SlingModelsUseProvider.java:126)

at org.apache.sling.scripting.sightly.impl.engine.extension.use.UseRuntimeExtension.call(UseRuntimeExtension.java:72)

... 122 common frames omitted

Suppressed: org.apache.sling.models.factory.MissingElementException: Could not inject private org.apache.sling.api.resource.Resource com.singtel.springd.aem.components.singtel.dualimagecomponent.DualImageComponentController.imageDesktop

at org.apache.sling.models.impl.ModelAdapterFactory.createObject(ModelAdapterFactory.java:598)

... 126 common frames omitted

Caused by: org.apache.sling.models.factory.ModelClassException: No injector returned a non-null value!

at org.apache.sling.models.impl.ModelAdapterFactory.injectElement(ModelAdapterFactory.java:513)

at org.apache.sling.models.impl.ModelAdapterFactory.createObject(ModelAdapterFactory.java:596)

... 126 common frames omitted

Suppressed: org.apache.sling.models.factory.MissingElementException: Could not inject private org.apache.sling.api.resource.Resource com.singtel.springd.aem.components.singtel.dualimagecomponent.DualImageComponentController.imageMobile

at org.apache.sling.models.impl.ModelAdapterFactory.createObject(ModelAdapterFactory.java:598)

... 126 common frames omitted

Caused by: org.apache.sling.models.factory.ModelClassException: No injector returned a non-null value!

at org.apache.sling.models.impl.ModelAdapterFactory.injectElement(ModelAdapterFactory.java:513)

at org.apache.sling.models.impl.ModelAdapterFactory.createObject(ModelAdapterFactory.java:596)

... 126 common frames omitted

Below is my core POM.xml file

<?xml version="1.0" encoding="UTF-8"?>

<!--

|  Copyright 2015 Adobe Systems Incorporated

|

|  Licensed under the Apache License, Version 2.0 (the "License");

|  you may not use this file except in compliance with the License.

|  You may obtain a copy of the License at

|

|      http://www.apache.org/licenses/LICENSE-2.0

|

|  Unless required by applicable law or agreed to in writing, software

|  distributed under the License is distributed on an "AS IS" BASIS,

|  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

|  See the License for the specific language governing permissions and

|  limitations under the License.

-->

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <parent>

        <groupId>com.singtel.springd.aem</groupId>

        <artifactId>aem-parent</artifactId>

        <version>1.14.49-SNAPSHOT</version>

        <relativePath>../pom.xml</relativePath>

    </parent>

    <artifactId>aem-parent.core</artifactId>

    <packaging>bundle</packaging>

    <name>SpringDigital - AEM - Core</name>

    <description>Core bundle for SpringDigital - AEM</description>

    <build>

        <testResources>

            <testResource>

                <directory>${project.basedir}/src/test/resource</directory>

            </testResource>

        </testResources>

        <plugins>

<plugin>

                <groupId>org.apache.sling</groupId>

                <artifactId>maven-sling-plugin</artifactId>

            </plugin>

            <plugin>

                <groupId>org.apache.felix</groupId>

                <artifactId>maven-scr-plugin</artifactId>

            </plugin>

            <plugin>

                <groupId>org.apache.felix</groupId>

                <artifactId>maven-bundle-plugin</artifactId>

                <extensions>true</extensions>

<executions>

                    <execution>

                        <id>bundle-manifest</id>

                        <phase>process-classes</phase>

                        <goals>

                            <goal>manifest</goal>

                        </goals>

                    </execution>

                </executions>

<configuration>

                    <instructions>

                    <Embed-Dependency>

                            commons-lang3,jsoup,jackson-core,poi,jackson-databind,jackson-annotations,aws-java-sdk-dynamodb,

                            aws-java-sdk-s3,aws-java-sdk-core,commons-logging,httpclient,httpcore,joda-time,json-simple,commons-httpclient,geronimo-atinject_1.0_spec

                        </Embed-Dependency>

                        <!-- Import any version of javax.inject, to allow running on multiple versions of AEM -->

                        <Import-Package>javax.inject;version=1.0.0,com.adobe.cq.sightly,*;resolution:=optional

                        </Import-Package>

                        <Require-Bundle>org.apache.sling.models.api</Require-Bundle>

                        <Sling-Model-Packages>

                            com.singtel.springd.aem,

                            com.singtel.springd.aem.datasource.impl

                        </Sling-Model-Packages>

                    </instructions>

                </configuration>

            </plugin>

        </plugins>

    </build>

    <profiles>

        <!-- Development profile: install only the bundle -->

        <profile>

            <id>autoInstallBundle</id>

            <activation>

                <activeByDefault>false</activeByDefault>

            </activation>

            <build>

                <plugins>

                    <plugin>

                        <groupId>org.apache.sling</groupId>

                        <artifactId>maven-sling-plugin</artifactId>

                        <configuration>

                            <!-- Note that this requires /apps/springd/install to exist!!       -->

                            <!-- This is typically the case when ui.apps is deployed first      -->

                            <!-- Otherwise, create /apps/springd/install manually (CRXDE|Lite)  -->

                            <slingUrlSuffix>/apps/springd/install/</slingUrlSuffix>

                            <failOnError>true</failOnError>

                        </configuration>

                    </plugin>

                </plugins>

            </build>

        </profile>

    </profiles>

    <dependencies>

        <!-- OSGi Dependencies -->

        <dependency>

            <groupId>org.apache.felix</groupId>

            <artifactId>org.apache.felix.scr</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.felix</groupId>

            <artifactId>org.apache.felix.scr.annotations</artifactId>

        </dependency>

        <dependency>

            <groupId>biz.aQute</groupId>

            <artifactId>bndlib</artifactId>

        </dependency>

        <dependency>

            <groupId>org.osgi</groupId>

            <artifactId>osgi.core</artifactId>

        </dependency>

        <dependency>

            <groupId>org.osgi</groupId>

            <artifactId>osgi.cmpn</artifactId>

        </dependency>

<dependency>

            <groupId>org.osgi</groupId>

            <artifactId>osgi.annotation</artifactId>

        </dependency>

        <!-- Other Dependencies -->

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-simple</artifactId>

        </dependency>

        <dependency>

            <groupId>javax.jcr</groupId>

            <artifactId>jcr</artifactId>

        </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>servlet-api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.sling</groupId>

            <artifactId>org.apache.sling.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.sling</groupId>

            <artifactId>org.apache.sling.models.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.sling</groupId>

            <artifactId>org.apache.sling.models.impl</artifactId>

        </dependency>

<dependency>

        <groupId>org.apache.geronimo.specs</groupId>

        <artifactId>geronimo-atinject_1.0_spec</artifactId>

    </dependency>

        <dependency>

            <groupId>com.adobe.aem</groupId>

            <artifactId>uber-jar</artifactId>

            <classifier>apis</classifier>

        </dependency>

        <dependency>

            <groupId>javax.mail</groupId>

            <artifactId>mail</artifactId>

        </dependency>

        <!-- dependency>

            <groupId>javax.inject</groupId>

            <artifactId>javax.inject</artifactId>

        </dependency-->

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

        </dependency>

<dependency>

            <groupId>org.mockito</groupId>

            <artifactId>mockito-core</artifactId>

        </dependency>

        <dependency>

            <groupId>org.mockito</groupId>

            <artifactId>mockito-all</artifactId>

        </dependency>

        <dependency>

            <groupId>junit-addons</groupId>

            <artifactId>junit-addons</artifactId>

        </dependency>

        <dependency>

            <groupId>com.adobe.acs</groupId>

            <artifactId>acs-aem-commons-bundle</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.commons</groupId>

            <artifactId>commons-lang3</artifactId>

        </dependency>

        <dependency>

            <groupId>org.jsoup</groupId>

            <artifactId>jsoup</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.httpcomponents</groupId>

            <artifactId>httpclient</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.sling</groupId>

            <artifactId>org.apache.sling.testing.sling-mock</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.jackrabbit</groupId>

            <artifactId>jackrabbit-jcr-commons</artifactId>

            <version>2.11.0</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.apache.jackrabbit</groupId>

            <artifactId>jackrabbit-jcr2dav</artifactId>

            <version>2.5.1</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.apache.jackrabbit</groupId>

            <artifactId>jackrabbit-webdav</artifactId>

            <version>2.2.8</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.powermock</groupId>

            <artifactId>powermock-module-junit4</artifactId>

        </dependency>

        <dependency>

            <groupId>org.powermock</groupId>

            <artifactId>powermock-api-mockito</artifactId>

        </dependency>

        <dependency>

            <groupId>org.powermock</groupId>

            <artifactId>powermock-core</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.commons</groupId>

            <artifactId>commons-email</artifactId>

        </dependency>

        <dependency>

            <groupId>commons-collections</groupId>

            <artifactId>commons-collections</artifactId>

        </dependency>

        <dependency>

            <groupId>commons-io</groupId>

            <artifactId>commons-io</artifactId>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-annotations</artifactId>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-core</artifactId>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-databind</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.httpcomponents</groupId>

            <artifactId>httpcore</artifactId>

        </dependency>

        <dependency>

            <groupId>com.amazonaws</groupId>

            <artifactId>aws-java-sdk-s3</artifactId>

        </dependency>

        <dependency>

            <groupId>com.amazonaws</groupId>

            <artifactId>aws-java-sdk-dynamodb</artifactId>

        </dependency>

        <dependency>

            <groupId>com.amazonaws</groupId>

            <artifactId>aws-java-sdk-core</artifactId>

        </dependency>

        <dependency>

            <groupId>commons-logging</groupId>

            <artifactId>commons-logging</artifactId>

        </dependency>

        <dependency>

            <groupId>joda-time</groupId>

            <artifactId>joda-time</artifactId>

        </dependency>

        <dependency>

            <groupId>commons-fileupload</groupId>

            <artifactId>commons-fileupload</artifactId>

        </dependency>

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi</artifactId>

        </dependency>

        <dependency>

            <groupId>commons-lang</groupId>

            <artifactId>commons-lang</artifactId>

        </dependency>

        <dependency>

            <groupId>com.googlecode.json-simple</groupId>

            <artifactId>json-simple</artifactId>

            <version>1.1</version>

        </dependency>

<dependency>

    <groupId>commons-httpclient</groupId>

    <artifactId>commons-httpclient</artifactId>

</dependency>

    </dependencies>

</project>

My Sling Model, in BaseController, i am adding few padding to each component:-

@Model(adaptables = SlingHttpServletRequest.class)

public class DualImageComponentController extends BaseController {  

  

 

    private static final Integer DEFAULT_DESKTOP_IMG_HEIGHT = 300;

  

    private static final Integer DEFAULT_MOBILE_IMG_HEIGHT = 100;

  

    /**

     *  Full Width property.

     */

    @Inject @Via(ModelConstants.RESOURCE)

    @Optional

    private String fullWidth;

  

    /**

     * Image Desktop Resource.

     */

    @Inject @Via(ModelConstants.RESOURCE)

    private Resource imageDesktop;

  

    /**

     * Mobile Desktop Resource.

     */

    @Inject @Via(ModelConstants.RESOURCE)

    private Resource imageMobile;

  

    /**

     * Returns the model for this component.

     *

     * @return ImageComponentModel.

     */

    public BaseContentModel getModel() {

        final ImageModel largeImage = getDesktopImage();

        final ImageModel smallImage = getMobileImage();

        return ComponentModelBuilder.build(new ImageComponentModel(),

            icm -> icm.setMobile(smallImage),

            icm -> icm.setDesktop(largeImage),

            icm -> icm.setFullWidth(null == fullWidth

                ? false : Boolean.valueOf(fullWidth)));

    }

    /**

     * Returns the image model for Desktop image.

     *

     * @return ImageModel.

     */

    private ImageModel getDesktopImage() {

        final ImageModel largeImage = new ImageModel();

        final ValueMap vm = imageDesktop.getValueMap();

        if (vm != null) {

            largeImage.setAltText(vm.get(ModelConstants.ALT, ""));

            largeImage.setImageSrc(vm.get(ModelConstants.FILE_REFERENCE, ""));

            largeImage.setHeight(((null != vm.get(ModelConstants.IMG_HEIGHT)

                    ? vm.get(ModelConstants.IMG_HEIGHT, Integer.class)

                    : DEFAULT_DESKTOP_IMG_HEIGHT)));

            largeImage.setImagePosition(ModelConstants.EXTRA_CLASS + vm.get(ModelConstants.IMG_POSITION, ""));

        }

        return largeImage;

    }

  

    /**

     * Returns the image model for Mobile image.

     *

     * @return ImageModel.

     */

    private ImageModel getMobileImage() {

        final ImageModel smallImage = new ImageModel();

        final ValueMap vm = imageMobile.getValueMap();

        if (vm != null) {

            smallImage.setAltText(vm.get(ModelConstants.ALT, ""));

            smallImage.setImageSrc(vm.get(ModelConstants.FILE_REFERENCE, ""));

            smallImage.setHeight(((null != vm.get(ModelConstants.IMG_HEIGHT)

                    ? vm.get(ModelConstants.IMG_HEIGHT, Integer.class)

                    : DEFAULT_MOBILE_IMG_HEIGHT)));

            smallImage.setImagePosition(ModelConstants.EXTRA_CLASS + vm.get(ModelConstants.IMG_POSITION, ""));

        }

        return smallImage;

    }

}

Please help.

desktop_exl_promo_600x100_weempoweryou.png

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Correct answer by
Level 10
Level 10
11/13/17 8:25:37 AM

We have AEM 6.3 Sling Model article that works and does not throw NPE. See this -- Creating a custom Touch UI Grid Component for Adobe Experience Manager

import org.apache.sling.api.resource.Resource;

import org.apache.sling.models.annotations.Model;

import org.apache.sling.models.annotations.Optional;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

@Model(adaptables = Resource.class)

public class ColumnControl {

Also - for AEM 6.3 -- MAKE sure you use UBER 6.3 and the dependencies shown in this article!

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Level 10
Level 10
11/13/17 12:35:28 AM

have a look at this in your log "Could not inject all required fields into class ". When you drag and drop a component, all properties will not present in JCR so that it can be injected by sling model.

@Injected fields/methods are assumed to be required. To mark them as optional, use @Optional

Two simple solution:-

1. Use @Optional like

    

     @Inject @Optional

     private String xyz;

2. In case most fields injected fields are optional, change the default Injection strategy to DefaultInjectionStrategy.OPTIONAL like

     @Model(adaptables=Resource.class, defaultInjectionStrategy=DefaultInjectionStrategy.OPTIONAL)

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Level 3
Level 3
11/13/17 1:08:20 AM

hi edubey​, thanks for reply.

in AEM 6.3, do we need to always adapt sling models to Resource ?   All Sling models  written  6.1 project adapts to SlingHttpServletRequest, so do we need to change whole implementation of all Models ? Please suggest

We made mandatory the injection, so that the view won't be rendered unless the dragged component is not authored all mandatory fields.

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Level 10
Level 10
11/13/17 1:20:48 AM

in AEM 6.3, do we need to always adapt sling models to Resource ?   All Sling models  written  6.1 project adapts to SlingHttpServletRequest, so do we need to change whole implementation of all Models ? Please suggest

     - As long you don't need access to the adaptables object (in this case SlingHttpServletRequest) , the resource should be fine. I don't see any need to change the whole implementation

We made mandatory the injection, so that the view won't be rendered unless the dragged component is not authored all mandatory fields.

     - but you still have control from sightly for this and making it @optional does not do any harm. Though you have made them mandatory, they don't exist at certain point

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Level 3
Level 3
11/13/17 4:17:28 AM

I tried with defaultInjectionStrategy=DefaultInjectionStrategy.OPTIONAL , but it did not help me. As in code we are reading values from @Inject & @Via ("resource"), its not being available, so failing with NPE.

below is my Model look like.

@Model(adaptables = SlingHttpServletRequest.class,  defaultInjectionStrategy=DefaultInjectionStrategy.OPTIONAL)

public class DualImageComponentController

@Inject @Via("resource")

    private Resource imageDesktop;

   

   

    @Inject @Via("resource")

    private Resource imageMobile;

then i am doing some operation on imageDesktop & imageMobile.

Any other suggestion would help a lot. Thanks

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Level 10
Level 10
11/13/17 5:20:26 AM

AFAIK, you have to take care of NPE from your code, Sling Model won't be doing it.

Also, Since you are aware of NPE, putting a check should fix it and performing operation when you have values available

Thanks

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Correct answer by
Level 10
Level 10
11/13/17 8:25:37 AM

We have AEM 6.3 Sling Model article that works and does not throw NPE. See this -- Creating a custom Touch UI Grid Component for Adobe Experience Manager

import org.apache.sling.api.resource.Resource;

import org.apache.sling.models.annotations.Model;

import org.apache.sling.models.annotations.Optional;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

@Model(adaptables = Resource.class)

public class ColumnControl {

Also - for AEM 6.3 -- MAKE sure you use UBER 6.3 and the dependencies shown in this article!

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