java 无法加载 EJB 模块
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Unable to load EJB module
提问by jslamka
I am taking a course in Enterprise Application Development. I am new to JSF. I am trying to deploy my app using Glassfish 3.1 using JSF and Netbeans IDE.
我正在学习企业应用程序开发课程。我是 JSF 的新手。我正在尝试使用 JSF 和 Netbeans IDE 使用 Glassfish 3.1 部署我的应用程序。
The error I get is listed below.
下面列出了我得到的错误。
Error occurred during deployment: Exception while preparing the app : Unable to load the EJB module. DeploymentContext does not contain any EJB. Check the archive to ensure correct packaging for F:\Seagate\docs backup\NetBeansProjects\ent-app-dev\Slamka_Project1\build\web.
If you use EJB component annotations to define the EJB, and an ejb or web deployment descriptor is also used, please make sure that the deployment descriptor references a Java EE 5 or higher version schema, and that the metadata-complete attribute is not set to true, so the component annotations can be processed as expected. Please see server.log for more details.
Error occurred during deployment: Exception while preparing the app : Unable to load the EJB module. DeploymentContext does not contain any EJB. Check the archive to ensure correct packaging for F:\Seagate\docs backup\NetBeansProjects\ent-app-dev\Slamka_Project1\build\web.
If you use EJB component annotations to define the EJB, and an ejb or web deployment descriptor is also used, please make sure that the deployment descriptor references a Java EE 5 or higher version schema, and that the metadata-complete attribute is not set to true, so the component annotations can be processed as expected. Please see server.log for more details.
Below are the references to EJB I have made.
下面是我对 EJB 的引用。
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.ejb.EJB;
@EJB
Any help would be appreciated.
任何帮助，将不胜感激。
EDIT: This is a Java Web Application.
编辑：这是一个 Java Web 应用程序。
EDITWAR FILE STRUCTURE TREE
编辑War文件结构树
- META-INF/MANIFEST.MF
- WEB-INF/classes
- WEB-INF/lib/primefaces-2.1.1.jar
- WEB-INF/web.xml
- index.shtml
- 元信息/清单.MF
- WEB-INF/类
- WEB-INF/lib/primefaces-2.1.1.jar
- WEB-INF/web.xml
- 索引.shtml
My file does not have an EJB tag in teh xhtml document. it has what is listed below.
我的文件在 xhtml 文档中没有 EJB 标记。它有下面列出的内容。
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsf/core">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsf/core">
回答by rnsammeta
Changing the web.xmlweb-appattribute version to 2.5or higher resolved this issue.
将web.xmlweb-app属性版本更改为2.5或更高可解决此问题。
Updated web-app element of web.xmlwill be,
更新的web.xml 的web-app 元素将是，
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
回答by Ilya
So you have web application, it's not ejb-jar, it's web module that sould be packeged to *.wararchive.
Structure should be
所以你有 web 应用程序，它不是 ejb-jar，它是应该打包*.war存档的 web 模块。
结构应该是
- *.war/META-INF/persistence.xml
- *.war/META-INF/MANIFEST.MF
- *.war/WEB-INF/sun-web.xml
- *.war/WEB-INF/web.xml
- *.war/WEB-INF/classes/ - compiled classes in packages
- *.war/WEB-INF/lib/ - libs
- *.war/index.jsp - home page
- *.war/META-INF/persistence.xml
- *.war/META-INF/MANIFEST.MF
- *.war/WEB-INF/sun-web.xml
- *.war/WEB-INF/web.xml
- *.war/WEB-INF/classes/ - 包中的编译类
- *.war/WEB-INF/lib/ - 库
- *.war/index.jsp - 主页
example of sun-web.xml
的例子 sun-web.xml
<!DOCTYPE sun-web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0 Servlet 2.5//EN" "http://www.sun.com/software/appserver/dtds/sun-web-app_2_5-0.dtd">
<sun-web-app>
<context-root>/app</context-root>
</sun-web-app>
if you are using Maven, you can use maven-war-plugin
如果你正在使用Maven，你可以使用maven-war-plugin
回答by jslamka
Turns out the issue was a typo in a SQL statement (1 and l [lower case L]) and I needed to do a "Clean and build" on the project. Thank you for those who put effort into helping me solve my issue.
原来问题是 SQL 语句中的一个错字（1 和 l [小写 L]），我需要对项目进行“清理和构建”。感谢那些努力帮助我解决问题的人。
