Apache OpenWebBeans(CDI) Servlet，注入不起作用

Question

我试图让CDI在tomcat 9.x中工作。我遵循了以下链接，但openwebbeans容器仍然没有将资源注入servlet

https://devlearnings.wordpress.com/2011/05/15/apache-openwebbeans-cdi-from-standalone-to-webapp/https://dzone.com/articles/using-apache-openwebbeanshttp://openwebbeans.apache.org/owbsetup_ee.html

下面是我的servlet

package com.openwebbeans;

import java.io.IOException;

import javax.inject.Inject;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SampleController extends  HttpServlet{

    private static final long serialVersionUID = 1L;

    @Inject
    private SampleService service;

    public void doGet(final HttpServletRequest request, final HttpServletResponse response) throws IOException {

        response.getWriter().print(service);
    }
}

下面是网络.xml

<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
    <display-name>OpenWebBeans</display-name>

    <listener>
        <listener-class>org.apache.webbeans.servlet.WebBeansConfigurationListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>sample</servlet-name>
        <servlet-class>com.openwebbeans.SampleController</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>sample</servlet-name>
        <url-pattern>/sample</url-pattern>
    </servlet-mapping>
</web-app>

在server.xml中添加了以下行

<Listener className="org.apache.webbeans.web.tomcat7.ContextLifecycleListener" />

下面是我的pom.xml

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.openwebbeans</groupId>
    <artifactId>openwebbeans-beginner</artifactId>
    <packaging>war</packaging>
    <version>1.0</version>
    <name>openwebbeans-beginner</name>
    <url>http://maven.apache.org</url>
    <properties>
        <owb.version>2.0.0</owb.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-atinject_1.0_spec</artifactId>
            <version>1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-jcdi_2.0_spec</artifactId>
            <version>1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-interceptor_1.2_spec</artifactId>
            <version>1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-annotation_1.3_spec</artifactId>
            <version>1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.openwebbeans</groupId>
            <artifactId>openwebbeans-impl</artifactId>
            <version>${owb.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.openwebbeans</groupId>
            <artifactId>openwebbeans-spi</artifactId>
            <version>${owb.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.openwebbeans</groupId>
            <artifactId>openwebbeans-web</artifactId>
            <version>${owb.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.openwebbeans</groupId>
            <artifactId>openwebbeans-tomcat7</artifactId>
            <version>${owb.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.javassist</groupId>
            <artifactId>javassist</artifactId>
            <version>3.21.0-GA</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
    <build>
        <finalName>openwebbeans-beginner</finalName>
    </build>
</project>

在tomcat lib下添加了以下罐子

• geronimo-annotation_1.3_spec-1.0
• geronimo-atinject_1.0_spec-1.0
• geronimo-interceptor_1.2_spec-1.0
• geronimo-jcdi_2.0_spec-1.0
• openwebbeans-el22-2.0.0
• openwebbeans-impl-2.0.0
• openwebbeans-spi-2.0.0
• openwebbeans-tomcat7-2.0.0
• openwebbeans-web-2.0.0
• xbean-asm5-shaded-4.5
• xbean-finder-shaded-4.5
• javassist-3.21.0-GA

以下是部署我的战争后的服务器日志。从日志中可以清楚地看出，打开 Web Bean 容器已启动

20-Jul-2017 10:06:08.315 INFO[超文本传输协议-nio-8080-exec-5]org.apache.catalina.startup.HostConfig.deployWAR部署Web应用程序存档[D：\krishna\apache-tomcat-9.0.0。M22\webapps\openwebbeans-beginner.war] 20-Jul-2017 10:06:08.904 INFO[超文本传输协议-nio-8080-exec-5]org.apache.webbeans.lifecycle.AbstractLifeCycle.bootstrapApplicationOpenWebBeans Container正在启动...20-Jul-2017 10:06:09.229 INFO[超文本传输协议-nio-8080-exec-5]org.apache.webbeans.lifecycle.AbstractLifeCycle.bootstrapApplicationOpenWebBeans Container已启动，耗时[325]ms。20-Jul-2017 10:06:09.235 INFO[超文本传输协议-nio-8080-exec-5]org.apache.catalina.startup.HostConfig.deployWARWeb应用程序存档的部署[D：\krishna\apache-tomcat-9.0.0。M22\webapps\openwebbeans-beginner.war]已在[920]ms内完成

此外，我还创建了openwebbeans。META-INF/openwebbeans下的属性，并添加了org.apache.webbeans.spi.ContainerLifecycle=org.apach.webBeains.lifecycle。独立于此。但它仍然不起作用

我还尝试了org . Apache . web beans . SPI . container life cycle = org . Apache . web beans . web . life cycle . webcontainer life cycle，但似乎都不起作用。

任何人都可以帮我让它工作吗？

Answer 1

如果您需要在servlet中进行注入，那么您需要比servlet侦听器更深入的集成。我们通过openwebbeans-tomcat7插件提供了这一功能。

最简单的方法是使用我们的安装程序，如我们的公告邮件 https://lists.apache.org/thread.html/15b8cbcdbcc24942dae6d277d75363103a9d45d59047fda0e6abcbbe@

在这种情况下，只需从您的Web.xml中删除整个WebBeansConfigurationListener。如果您希望集成到“无pimped”servlet容器中，或者如果您在GAE中运行，则这是为了进行。在这种情况下，您可以使用 CDI.current（） 在 Servlet 中获取 CDI bean。

您也不再需要任何javassist依赖项。很久以前在OWB 1.2 . x中就被删除了。

请随时ping我们的邮件列表或freenode.net的# openwebbeans IRC！

哦，还有另一个提示:你可以试试我们的Apache Meecrowave容器，它是OWB Tomcat 9 CXF Johnzon——全部在9MB内。它包括一个maven插件，一个Arquillian容器，等等。