我在TomCat V9上有一个可以正常运行的应用程序...
我正在尝试使用最小依赖项...所以我的pom.xml就是这样：
<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>
<groupId>br.com.brunots.training</groupId>
<artifactId>only-jaxrs</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<developers>
<developer>
<name>Bruno Teofilo da Silva</name>
<email>bruno@brunots.com.br</email>
</developer>
</developers>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
<build>
<finalName>onlyJaxrs</finalName>
</build>
<dependencies>
<!-- This dependency it's only to use ApplicationPath annotation on Tomcat-->
<dependency>
<groupId>org.glassfish.jersey.bundles</groupId>
<artifactId>jaxrs-ri</artifactId>
<version>2.27</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1.1</version>
</dependency>
</dependencies>
</project>
所以我只有两个班级...
package br.com.brunots.training.onlyjaxrs;
import javax.ws.rs.ApplicationPath;
@ApplicationPath("rest")
public class Application extends javax.ws.rs.core.Application {
}
然后...
package br.com.brunots.training.onlyjaxrs;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
@Path("resource")
public class ApplicationResource {
@GET
@Path("get/{message}")
public Response hello(@PathParam("message") String message) {
return Response.ok("Response OK!\n" + message).build();
}
}
仅这足以调用URI onlyJaxrs/rest/resource/get/anyString并获得响应Response OK! anyString
现在，我想使用CDI将我的DAO注入我的服务中。因此，我在beans.xml文件夹下创建了一个空的src/main/webapp/WEB-INF。
还要创建一个接口（InjectedObject）和一个实现（InjectedObjectImpl），以尝试将其注入到我的ApplicationResource服务中...
@Path("resource")
public class ApplicationResource {
@Inject
private InjectedObject injected;
...
}
现在，当我尝试调用相同的URI onlyJaxrs/rest/resource/get/anyString并遇到以下错误时。
javax.servlet.ServletException: A MultiException has 3 exceptions. They are:
1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=InjectedObject,parent=ApplicationResource,qualifiers={},position=-1,optional=false,self=false,unqualified=null,2029328088)
2. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of br.com.brunots.training.onlyjaxrsandcdi.jersey.ApplicationResource errors were found
3. java.lang.IllegalStateException: Unable to perform operation: resolve on br.com.brunots.training.onlyjaxrsandcdi.jersey.ApplicationResource
通过对Google的一些研究，我发现我需要对pom.xml添加新的依赖项
<dependency>
<groupId>org.glassfish.jersey.containers.glassfish</groupId>
<artifactId>jersey-gf-cdi</artifactId>
<version>2.14</version>
</dependency>
现在我收到此错误：
java.lang.AbstractMethodError: org.glassfish.jersey.gf.cdi.internal.CdiComponentProvider.initialize(Lorg/glassfish/jersey/internal/inject/InjectionManager;)V
at org.glassfish.jersey.server.ComponentProviderConfigurator.lambda$null$0(ComponentProviderConfigurator.java:79)
at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:372)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at org.glassfish.jersey.server.ComponentProviderConfigurator.lambda$init$1(ComponentProviderConfigurator.java:80)
at org.glassfish.jersey.internal.util.collection.Values$LazyValueImpl.get(Values.java:341)
at org.glassfish.jersey.server.ApplicationConfigurator.createApplication(ApplicationConfigurator.java:122)
at org.glassfish.jersey.server.ApplicationConfigurator.init(ApplicationConfigurator.java:96)
at org.glassfish.jersey.server.ApplicationHandler.lambda$initialize$0(ApplicationHandler.java:313)
at java.util.Arrays$ArrayList.forEach(Arrays.java:3880)
at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:313)
at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:282)
at org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:335)
at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:178)
at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:370)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1124)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:974)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4829)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5143)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
真的需要这种依赖吗？ 我想念什么？