我有一个非常简单的带有maven的ejb 3.0模块，它只有两个 session bean，一个是无状态的，另一个是单例的...当我尝试在Glassfish 3.0服务器上部署该项目时，我得到了这个异常:
Error occurred during deployment: Exception while deploying the app : Invalid ejb jar : it contains zero ejb. Note: 1. A valid ejb jar requires at least one session, entity (1.x/2.x style), or message-driven bean. 2. EJB3+ entity beans (@Entity) are POJOs and please package them as library jar. 3. If the jar file contains valid EJBs which are annotated with EJB component level annotations (@Stateless, @Stateful, @MessageDriven, @Singleton), please check server.log to see whether the annotations were processed properly.. Please see server.log for more details.
我使用 Glassfish Verifier Tool 验证项目，遇到此异常，但我不知道该怎么办？
Verifier output unparsable
Verifier output (C:\Users\Mariam.Moustafa\Documents\NetBeansProjects\web\EmployeesTimer\target\EmployeesTimer-1.0-SNAPSHOT.jar.xml) not found.
这是 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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.unilever</groupId>
<artifactId>EmployeesTimer</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>ejb</packaging>
<name>EmployeesTimer</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.8</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.2</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.2</version>
</dependency>
<!-- slf4j Logger -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ejb-plugin</artifactId>
<version>2.3</version>
<configuration>
<ejbVersion>3.1</ejbVersion>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>6.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>unknown-jars-temp-repo</id>
<name>A temporary repository created by NetBeans for libraries and jars it could not identify. Please replace the dependencies in this repository with correct ones and delete this repository.</name>
<url>file:${project.basedir}/lib</url>
</repository>
<repository>
<id>m2.dev.java.net</id>
<url>http://download.java.net/maven/2</url>
<layout>default</layout>
</repository>
<repository>
<id>prime-repo</id>
<name>PrimeFaces Maven Repository</name>
<url>http://repository.primefaces.org</url>
<layout>default</layout>
</repository>
</repositories>
</project>
我确认我有 2 个简单的 ejb
@Stateless public class EmployeesFacade {}
@Singleton public class TimerService {
@EJB EmployeesFacade emloyeesFacade;
}
这是代码:
第一个@singleton ejb bean
package com.employeestimer.services;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.unilever.employeestimer.enums.ConnectionEnum;
import com.unilever.employeestimer.exceptions.BusinessException;
import java.io.IOException;
import javax.ejb.EJB;
import javax.ejb.Schedule;
import javax.ejb.Singleton;
import javax.naming.NamingException;
import javax.ws.rs.core.MediaType;
import org.codehaus.jackson.JsonProcessingException;
import org.slf4j.LoggerFactory;
@Singleton
public class TimerService {
static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(TimerService.class);
@EJB
EmployeesFacade emloyeesFacade;
private final static String U_ENGAGE_URL = "http://..../webresources/employees/update";
@Schedule(second="*", minute="*/1",hour="*", persistent=false)
public void doWork() throws JsonProcessingException, IOException, NamingException{
try{
String input = emloyeesFacade.getUsersData(ConnectionEnum.USERNAME.getCode(), ConnectionEnum.PASSWORD.getCode());
consumeRESTfulWebService(input);
}catch(BusinessException e){
LOGGER.error("",e);
}
}
private void consumeRESTfulWebService(String input){
try {
LOGGER.debug("input = " + input);
Client client = Client.create();
WebResource webResource = client.resource(U_ENGAGE_URL);
ClientResponse response = webResource.type(MediaType.TEXT_PLAIN).post(ClientResponse.class, input);
if (response.getStatus() != ClientResponse.Status.NO_CONTENT.getStatusCode()) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatus());
}
LOGGER.debug("Output from Server .... \n");
} catch (Exception e) {
LOGGER.error("",e);
}
}
}
这是 Facade bean:
package com.employeestimer.services;
import com.employeestimer.beans.EmployeeData;
import com.employeestimer.enums.ConfigurationsEnum;
import com.employeestimer.enums.ConnectionEnum;
import com.employeestimer.exceptions.BusinessException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import javax.ejb.Stateless;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import javax.naming.ldap.Control;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;
import javax.naming.ldap.PagedResultsControl;
import javax.naming.ldap.PagedResultsResponseControl;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.ObjectWriter;
import org.slf4j.LoggerFactory;
@Stateless
public class EmployeesFacade {
static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(EmployeesFacade.class);
public String getLDAPConnectionType() {
return ConfigurationsEnum.LDAP_Connection_Type.getCode();
}
public String getDomain() {
return ConfigurationsEnum.DOMAIN.getCode();
}
public String getLDAPIP() {
return ConfigurationsEnum.LDAP_IP.getCode();
}
public String getLDAPPort() {
return ConfigurationsEnum.LDAP_PORT.getCode();
}
public String getLDAPBase() {
return ConfigurationsEnum.LDAP_BASE.getCode();
}
private LdapContext getContext(String username, String password) throws BusinessException, NamingException {
Hashtable env = new Hashtable();
if (getDomain() == null || getLDAPConnectionType() == null
|| getLDAPIP() == null || getLDAPPort() == null) {
throw new BusinessException("error_general");
}
String domain = getDomain();
String url = getLDAPConnectionType() + "://" + getLDAPIP() + ":" + getLDAPPort();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, url);
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.REFERRAL, "follow");
if (!username.contains("@")) {
username = username + "@" + domain;
}
env.put(Context.SECURITY_PRINCIPAL, username);
env.put(Context.SECURITY_CREDENTIALS, password);
return new InitialLdapContext(env, null);
}
public String getUsersData(String username, String password) throws BusinessException, JsonProcessingException, IOException, NamingException {
List<EmployeeData> employeelist = new ArrayList<EmployeeData>();
EmployeeData employee;
String json = "";
try {
LdapContext context = getContext(username, password);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
String[] attrIDs = {"mail"}; //, "sn", "cn", "c", "l"};
constraints.setReturningAttributes(attrIDs);
// Activate paged results
int pageSize = Integer.parseInt(ConnectionEnum.PAGESIZE.getCode());
byte[] cookie = null;
context.setRequestControls(new Control[]{new PagedResultsControl(pageSize,
Control.NONCRITICAL)});
int total;
NamingEnumeration<SearchResult> result = null;
do {
/* perform the search */
result = context.search(getLDAPBase(), "(&(objectClass=User)(c=EG))", constraints);
/* for each entry print out name + all attrs and values */
while (result != null && result.hasMore()) {
SearchResult entry = (SearchResult) result.next();
employee = new EmployeeData();
Attribute attribute;
if (entry.getAttributes() != null) {
if (entry.getAttributes().get("mail") != null) {
attribute = entry.getAttributes().get("mail");
employee.setEmail(attribute != null ? attribute.toString().replace("mail: ", "") : "");
employeelist.add(employee);
}
}
}
// Examine the paged results control response
Control[] controls = context.getResponseControls();
if (controls != null) {
for (int i = 0; i < controls.length; i++) {
if (controls[i] instanceof PagedResultsResponseControl) {
PagedResultsResponseControl prrc = (PagedResultsResponseControl) controls[i];
total = prrc.getResultSize();
if (total != 0) {
LOGGER.debug("***************** END-OF-PAGE " + "(total : " + total + ") *****************\n");
} else {
LOGGER.debug("***************** END-OF-PAGE " + "(Page no. " + i + ") ***************\n");
}
cookie = prrc.getCookie();
}
}
} else {
LOGGER.debug("No controls were sent from the server");
}
// Re-activate paged results
context.setRequestControls(new Control[]{new PagedResultsControl(
pageSize, cookie, Control.CRITICAL)});
} while (cookie != null);
//result.close();
context.close();
ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
json = ow.writeValueAsString(employeelist);
LOGGER.debug("\n \n \n ************* \n ************* \n ************* \n \n THE SIZE = " + employeelist.size() + "\n \n ************* \n ************* \n ************* \n \n \n");
} catch (NamingException ex) {
String detailmessage = ex.getExplanation();
if (detailmessage.contains(" 32 ")) {
// User not Found
throw new BusinessException("error_invalidUser");
} else if (detailmessage.contains(" 49 ")) {
if (detailmessage.contains(" 775 ") || detailmessage.contains(" 701 ") || detailmessage.contains(" 533 ")) {
//Invalid Account
throw new BusinessException("error_invalidAccount");
} else {
//Invalid Username or password
throw new BusinessException("error_invalidUsernamePassword");
}
} else {
LOGGER.error("error_general", ex);
throw new BusinessException("error_general");
}
}
return json;
}
}
最佳答案
我没有发现您的设置有问题。如果您确实在该项目中有一些用 @Singleton 或 @Stateless 注释的类，那么这应该可以工作。
但重要的一点是，如果您有任何 Glassfish 库中不可用的依赖项，则必须将它们与您的应用程序一起打包，而 EJB/JAR 打包是不可能的。您必须将其打包为 WAR 或 EAR 文件。
要快速开始，请尝试以下操作:
改变
<packaging>ejb</packaging>
至
<packaging>war</packaging>
并改变
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ejb-plugin</artifactId>
<version>2.3</version>
<configuration>
<ejbVersion>3.1</ejbVersion>
</configuration>
</plugin>
至
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
如果您想将其打包为 EAR，可以使用 maven-ear-plugin .
另请参阅:
关于java - Glassfish 3.0 : Exception while deploying ejb module. ..无效的 ejb j ar:它包含零个 ejb，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31003560/