问题是我在将我的项目部署到 Glassfish 时收到以下错误:
java.lang.RuntimeException: Unable to load EJB module. DeploymentContext does not contain any EJB Check archive to ensure correct packaging
但是,让我们从 Maven2 中的项目结构开始...
我已经构建了以下场景:
MultiModuleJavaEEProject - 父模块
-> 模型 ---> 打包为 jar
-> ejb1 ----> 打包为 ebj
-> ejb2 ----> 打包为 ebj
-> web ----> 打包为 war
所以模型、ejb1、ejb2 和 web 是父 MultiModuleJavaEEProject 的子/模块。
_ejb1 取决于型号。
_ejb2 依赖于 ejb1。
_web 依赖于 ejb2。
pom的样子:
_父:
<?xml version="1.0" encoding="UTF-8"?>
<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>org.dyndns.geraldhuber.testing</groupId>
<artifactId>MultiModuleJavaEEProject</artifactId>
<packaging>pom</packaging>
<version>1.0</version>
<name>MultiModuleJavaEEProject</name>
<url>http://maven.apache.org</url>
<modules>
<module>model</module>
<module>ejb1</module>
<module>ejb2</module>
<module>web</module>
</modules>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ejb-plugin</artifactId>
<version>2.2</version>
<configuration>
<ejbVersion>3.1</ejbVersion>
<jarName>${project.groupId}.${project.artifactId}-${project.version}</jarName>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
_模型:
<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>
<parent>
<groupId>testing</groupId>
<artifactId>MultiModuleJavaEEProject</artifactId>
<version>1.0</version>
</parent>
<artifactId>model</artifactId>
<packaging>jar</packaging>
<version>1.0</version>
<name>model</name>
<url>http://maven.apache.org</url>
</project>
_ejb1:
<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>
<parent>
<groupId>testing</groupId>
<artifactId>MultiModuleJavaEEProject</artifactId>
<version>1.0</version>
</parent>
<artifactId>ejb1</artifactId>
<packaging>ejb</packaging>
<version>1.0</version>
<name>ejb1</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.ejb</artifactId>
<version>3.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>testing</groupId>
<artifactId>model</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
</project>
_ejb2:
<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>
<parent>
<groupId>testing</groupId>
<artifactId>MultiModuleJavaEEProject</artifactId>
<version>1.0</version>
</parent>
<artifactId>ejb2</artifactId>
<packaging>ejb</packaging>
<version>1.0</version>
<name>ejb2</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.ejb</artifactId>
<version>3.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>testing</groupId>
<artifactId>ejb1</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
</project>
_网络:
<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>MultiModuleJavaEEProject</artifactId>
<groupId>testing</groupId>
<version>1.0</version>
</parent>
<groupId>testing</groupId>
<artifactId>web</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>web Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.ejb</artifactId>
<version>3.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>testing</groupId>
<artifactId>ejb2</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.0</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
<finalName>web</finalName>
</build>
</project>
而模型只是一个简单的 Pojo:
package testing.model;
public class Data {
private String data;
public String getData() {
return data;
}
public void setData(String data) {
this.data = data;
}
}
并且 ejb1 只包含一个 STATELESS ejb。
package testing.ejb1;
import javax.ejb.Stateless;
import testing.model.Data;
@Stateless
public class DataService {
private Data data;
public DataService(){
data = new Data();
data.setData("Hello World!");
}
public String getDataText(){
return data.getData();
}
}
以及 ejb2 只是一个无状态的 ejb:
package testing.ejb2;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import testing.ejb1.DataService;
@Stateless
public class Service {
@EJB
DataService service;
public Service(){
}
public String getText(){
return service.getDataText();
}
}
而 web 模块只包含一个 Servlet:
package testing.web;
import java.io.IOException;
import java.io.PrintWriter;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import testing.ejb2.Service;
public class SimpleServlet extends HttpServlet {
@EJB
Service service;
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
out.println( "SimpleServlet Executed" );
out.println( "Text: "+service.getText() );
out.flush();
out.close();
}
}
Web 模块中的 web.xml 文件如下所示:
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>simple</servlet-name>
<servlet-class>testing.web.SimpleServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>simple</servlet-name>
<url-pattern>/simple</url-pattern>
</servlet-mapping>
</web-app>
所以我没有设置其他文件。任何 ejb 文件中都没有 ejb-jar.xml,因为我使用的是 EJB 3.1。所以我认为 ejb-jar.xml 描述符是可选的。我这个对吗?
但问题是,已经提到的错误:
java.lang.RuntimeException: Unable to load EJB module. DeploymentContext does not contain any EJB Check archive to ensure correct packaging
有人可以帮忙吗?