【发布时间】：2014-11-16 22:37:18
【问题描述】：
我有如下界面
public interface IMyMapper<T> {}
和实现
public class MyMapper implements IMyMapper<MyClazz> {}
现在我想将 MyMapper 类注入到无状态 bean 中：
@Stateless
public class MyService {
@Inject
MyMapper mapper; //<-- does not work
@Inject
IMyMapper<MyClazz> mapper; //<-- also does not work
}
我的问题是注入不起作用。我得到一个例外：
org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type MyMapper with qualifiers @Default
at injection point [BackedAnnotatedField] @Inject mypackage.MyService.mapper
at mypackage.MyService.mapper(MyService.java:0)
at org.jboss.weld.bootstrap.Validator.validateInjectionPointForDeploymentProblems(Validator.java:370)
at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:291)
at org.jboss.weld.bootstrap.Validator.validateGeneralBean(Validator.java:134)
at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:165)
at org.jboss.weld.bootstrap.Validator.validateBean(Validator.java:529)
at org.jboss.weld.bootstrap.Validator.validateBeans(Validator.java:515)
at org.jboss.weld.bootstrap.Validator.validateDeployment(Validator.java:490)
at org.jboss.weld.bootstrap.WeldStartup.validateBeans(WeldStartup.java:419)
at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:90)
at org.glassfish.weld.WeldDeployer.event(WeldDeployer.java:225)
at org.glassfish.kernel.event.EventsImpl.send(EventsImpl.java:131)
at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:328)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:496)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:219)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:491)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:539)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:535)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2.execute(CommandRunnerImpl.java:534)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:565)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:557)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:556)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1464)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1300(CommandRunnerImpl.java:109)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1846)
at org.glassfish.deployment.autodeploy.AutoOperation.run(AutoOperation.java:164)
at org.glassfish.deployment.autodeploy.AutoDeployer.deploy(AutoDeployer.java:597)
at org.glassfish.deployment.autodeploy.AutoDeployer.deployAll(AutoDeployer.java:484)
at org.glassfish.deployment.autodeploy.AutoDeployer.run(AutoDeployer.java:412)
at org.glassfish.deployment.autodeploy.AutoDeployer.run(AutoDeployer.java:403)
at org.glassfish.deployment.autodeploy.AutoDeployService$1.run(AutoDeployService.java:233)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
]]
我该如何解决这个问题？
【问题讨论】：
-
绝对不是骗人的，但它可能已经被回答过。
-
从我的角度来看没有重复。当然，我在开始提问之前已经搜索过 SO，但找不到令人满意的答案。
-
我认为@KumarAbhinav 是正确的（可能重复）。 CDI1.1 默认使用注解来发现 bean。由于指定的 beans 不包含任何作用域注释，因此我们也不会被告知 beans.xml 文件是否存在。
-
你能提供你的项目结构吗？它是如何包装的？你声明了
BeanManger吗？ -
可能是重复的，但属于哪个问题？如果我正在寻找有关该主题的信息并找到此页面，我会很生气地看到这个没有链接的重复提及...
标签： java jakarta-ee cdi java-ee-7