Question

我正在尝试使用CDI，DeltaSpike（引导程序）打包命令行应用程序，使用Weld SE作为CDI实现。从我的IDE启动时，应用程序运行正常，但在将应用程序打包到超级jar时，我收到一条钝错误消息：

Exception in thread "main" org.jboss.weld.exceptions.IllegalArgumentException: WELD-001456: Argument bean must not be null
at org.jboss.weld.util.Preconditions.checkArgumentNotNull(Preconditions.java:40)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:772)
at org.jboss.weld.util.ForwardingBeanManager.getReference(ForwardingBeanManager.java:61)
at org.jboss.weld.bean.builtin.BeanManagerProxy.getReference(BeanManagerProxy.java:85)
at org.apache.deltaspike.cdise.weld.WeldContainerControl.getContextControl(WeldContainerControl.java:138)
at com.katalystdm.sql.exec.CDIBootstrap.boot(CDIBootstrap.java:13)
at com.katalystdm.sql.exec.Main.main(Main.java:44)

这是maven-shade-plugin配置：

  <plugin>
    <artifactId>maven-shade-plugin</artifactId>
    <configuration>
      <createDependencyReducedPom>false</createDependencyReducedPom>
      <filters>
        <filter>
          <artifact>*:*</artifact>
          <excludes>
            <exclude>**/LICENSE*</exclude>
            <exclude>**/NOTICE*</exclude>
          </excludes>
        </filter>
      </filters>
      <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
    </configuration>
    <executions>
      <execution>
        <phase>package</phase>
        <goals>
          <goal>shade</goal>
        </goals>
      </execution>
    </executions>
  </plugin>

boot()功能很简单：

public static <T> T boot(CdiContainer container, Class<T> clazz)
{
  container.boot();

  ContextControl contextControl = container.getContextControl(); // <-- Exception thrown here!
  contextControl.startContexts();

  return BeanProvider.getContextualReference(clazz, false);
}

鉴于这在从IDE启动时起作用，它必须是一个包装问题，但我不知道原因是什么。

CDI在扫描豆子时会有所不同。在我的beans.xml我基本上排除了除我自己的应用程序之外的所有包：

<?xml version="1.0" encoding="UTF-8"?>
<beans 
  xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
  xmlns:weld="http://jboss.org/schema/weld/beans" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
  version="1.1" 
  bean-discovery-mode="all">
  <scan>
    <exclude name="com.beust.**"/>
    <exclude name="com.google.**"/>
    <exclude name="com.opencsv.**"/>
    <exclude name="javax.**"/>
    <exclude name="oracle.**"/>
    <exclude name="org.**"/>
  </scan>  
</beans>

关于从哪里开始的任何想法？

Answer 1

我发现了问题的解决方案。问题是beans.xml文件中定义的排除项过于宽泛。由于在扫描时导致CDI错误的几个依赖库，我排除了org.**下的所有内容。具体而言，CDI扫描org.apache.deltaspike包非常重要。在我的具体案例中，工作beans.xml看起来像这样：

<?xml version="1.0" encoding="UTF-8"?>
<beans 
  xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
  xmlns:weld="http://jboss.org/schema/weld/beans" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
  version="1.1" 
  bean-discovery-mode="all">
  <scan>
    <exclude name="com.beust.**"/>
    <exclude name="com.google.**"/>
    <exclude name="com.kelman.**"/>
    <exclude name="com.opencsv.**"/>
    <exclude name="javax.**"/>
    <exclude name="oracle.**"/>
    <exclude name="org.apache.commons.**"/>
    <exclude name="org.honton.**"/>
    <exclude name="org.jboss.**"/>
    <exclude name="org.skife.**"/>
    <exclude name="org.slf4j.**"/>
  </scan>  
</beans>

包装DeltaSpike＆amp ;;“Argument bean不能为空”焊接SE作为超级罐

1 个答案: