无法访问EntityBean

这是ejb-jar.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
    <enterprise-beans>
        <entity>
            <display-name>Person</display-name>
            <ejb-name>Person</ejb-name>
            <home>com.lon.j2ee.ejb.cmp.PersonRemoteHome</home>
            <remote>com.lon.j2ee.ejb.cmp.PersonRemote</remote>
            <ejb-class>com.lon.j2ee.ejb.cmp.PersonBean</ejb-class>
            <persistence-type>Container</persistence-type>
            <prim-key-class>com.lon.j2ee.ejb.cmp.PersonPK</prim-key-class>
            <reentrant>False</reentrant>
            <cmp-version>2.x</cmp-version>
            <abstract-schema-name>Person</abstract-schema-name>
            <cmp-field>
                <field-name>id</field-name>
            </cmp-field>
            <cmp-field>
                <field-name>name</field-name>
            </cmp-field>
            <cmp-field>
                <field-name>address</field-name>
            </cmp-field>
        </entity>
    </enterprise-beans>
    <assembly-descriptor>
        <container-transaction>
            <method>
                <ejb-name>Person</ejb-name>
                <method-name>*</method-name>
            </method>
            <trans-attribute>Required</trans-attribute>
        </container-transaction>
    </assembly-descriptor>
</ejb-jar>这是weblogic-ejb-jar.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC '-//BEA Systems, Inc.//DTD WebLogic 7.0.0 EJB//EN' 'http://www.bea.com/servers/wls700/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
    <weblogic-enterprise-bean>
        <ejb-name>Person</ejb-name>
        <entity-descriptor>
            <persistence>
                <persistence-use>
                    <type-identifier>WebLogic_CMP_RDBMS</type-identifier>
                    <type-version>6.0</type-version>
                    <type-storage>META-INF/weblogic-cmp-rdbms-jar.xml</type-storage>
                </persistence-use>
            </persistence>
        </entity-descriptor>
        <jndi-name>PersonRemote</jndi-name>
    </weblogic-enterprise-bean>
</weblogic-ejb-jar>这是weblogic-cmp-rdbms-jar.xml<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE weblogic-rdbms-jar PUBLIC '-//BEA Systems, Inc.//DTD WebLogic 7.0.0 EJB RDBMS Persistence//EN' 'http://www.bea.com/servers/wls700/dtd/weblogic-rdbms20-persistence-700.dtd'>
<weblogic-rdbms-jar>
    <weblogic-rdbms-bean>
        <ejb-name>Person</ejb-name>
        <data-source-name>DataSource</data-source-name>
        <table-map>
            <table-name>PERSON</table-name>
            <field-map>
                <cmp-field>id</cmp-field>
                <dbms-column>ID</dbms-column>
            </field-map>
            <field-map>
                <cmp-field>name</cmp-field>
                <dbms-column>NAME</dbms-column>
            </field-map>
            <field-map>
                <cmp-field>address</cmp-field>
                <dbms-column>ADDRESS</dbms-column>
            </field-map>
        </table-map>
    </weblogic-rdbms-bean>
</weblogic-rdbms-jar>

这是bean代码：
package com.lon.j2ee.ejb.cmp;import javax.ejb.*;
import java.sql.Connection;
import javax.naming.InitialContext;
import javax.naming.Context;abstract public class PersonBean
    implements EntityBean
{
    EntityContext entityContext;
    public PersonPK ejbCreate(int id, java.lang.String name,
                              java.lang.String address) throws CreateException
    {
        log("EJB has been created");
        setId(id);
        setName(name);
        setAddress(address);
        return null;
    }    public void ejbPostCreate(int id, java.lang.String name,
                              java.lang.String address) throws CreateException
    {
        /**@todo Complete this method*/
    }    public void ejbRemove() throws RemoveException
    {
        log("EJB has been revoed");
        /**@todo Complete this method*/
    }    public void ejbLoad()
    {
        log("EJB has been load");
        /**@todo Complete this method*/
    }    public void ejbStore()
    {
        /**@todo Complete this method*/
    }    public void ejbActivate()
    {
        log("EJB has been activited");
        /**@todo Complete this method*/
    }    public void ejbPassivate()
    {
        /**@todo Complete this method*/
    }    public void unsetEntityContext()
    {
        this.entityContext = null;
    }    public abstract void setId(int id);    public abstract void setName(java.lang.String name);    public abstract void setAddress(java.lang.String address);    public abstract int getId();    public abstract java.lang.String getName();    public abstract java.lang.String getAddress();    public void setEntityContext(EntityContext entityContext)
    {
        this.entityContext = entityContext;
    }    /**
     * Gets JDBC connection from the connection pool.
     *
     * @return The JDBC connection
     */
    public Connection getConnection() throws Exception
    {
        try
        {
            Context ctx = new InitialContext();
            javax.sql.DataSource ds = (javax.sql.DataSource) ctx.
                lookup("java:comp/env/jdbc/oraclePool");
            return ds.getConnection();
        }
        catch (Exception e)
        {
            System.err.println("Could not locate datasource!  Reason:");
            e.printStackTrace();
            throw e;
        }
    }    private void log(String log)
    {
        System.out.println("***********: " + log);
    }
}

你在weblogic上的DataSource的jndi名是什么？

这是TestClient代码
package com.lon.j2ee.info;import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;import com.lon.j2ee.ejb.cmp.PersonPK;
import com.lon.j2ee.ejb.cmp.PersonRemote;
import com.lon.j2ee.ejb.cmp.PersonRemoteHome;/**
* <p>Title: My project</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2003</p>
* <p>Company: </p>
* @author long
* @version 1.0
*/public class PersonTestClient1
    extends Object
{
    private static final String ERROR_NULL_REMOTE = "Remote interface reference is null.  It must be created by calling one of the Home interface methods first.";
    private static final int MAX_OUTPUT_LINE_LENGTH = 100;
    private boolean logging = true;
    private PersonRemoteHome personRemoteHome = null;
    private PersonRemote personRemote = null;    //Construct the EJB test client
    public PersonTestClient1()
    {
        initialize();
    }    public void initialize()
    {
        long startTime = 0;
        if (logging)
        {
            log("Initializing bean access.");
            startTime = System.currentTimeMillis();
        }        try
        {
            //get naming context
            Context context = getInitialContext();            //look up jndi name
            Object ref = context.lookup("PersonRemote");
            //look up jndi name and cast to Home interface
            personRemoteHome = (PersonRemoteHome) PortableRemoteObject.narrow(
                ref, PersonRemoteHome.class);
            if (logging)
            {
                long endTime = System.currentTimeMillis();
                log(
                    "Succeeded initializing bean access through Home interface.");
                log("Execution time: " + (endTime - startTime) + " ms.");
            }
        }
        catch (Exception e)
        {
            if (logging)
            {
                log("Failed initializing bean access.");
            }
            e.printStackTrace();
        }
    }    private Context getInitialContext() throws Exception
    {
        String url = "t3://gewl:7001";
        String user = "username";
        String password = "password";
        Properties properties = null;
        try
        {
            properties = new Properties();
            properties.put(Context.INITIAL_CONTEXT_FACTORY,
                           "weblogic.jndi.WLInitialContextFactory");
            properties.put(Context.PROVIDER_URL, url);
            if (user != null)
            {
                properties.put(Context.SECURITY_PRINCIPAL, user);
                properties.put(Context.SECURITY_CREDENTIALS,
                               password == null ? "" : password);
            }            return new InitialContext(properties);
        }
        catch (Exception e)
        {
            log("Unable to connect to WebLogic server at " + url);
            log("Please make sure that the server is running.");
            throw e;
        }
    }    public PersonRemote create(int id, String name, String address)
    {
        long startTime = 0;
        if (logging)
        {
            log("Calling create(" + id + ", " + name + ", " + address + ")");
            startTime = System.currentTimeMillis();
        }
        try
        {
            personRemote = personRemoteHome.create(id, name, address);
            if (logging)
            {
                long endTime = System.currentTimeMillis();
                log("Succeeded: create(" + id + ", " + name + ", " + address +
                    ")");
                log("Execution time: " + (endTime - startTime) + " ms.");
            }
        }
        catch (Exception e)
        {
            if (logging)
            {
                log("Failed: create(" + id + ", " + name + ", " + address + ")");
            }
            e.printStackTrace();
        }        if (logging)
        {
            log("Return value from create(" + id + ", " + name + ", " + address +
                "): " + personRemote + ".");
        }
        return personRemote;
    }    public PersonRemote findByPrimaryKey(PersonPK pk)
    {
        long startTime = 0;
        if (logging)
        {
            log("Calling findByPrimaryKey(" + pk + ")");
            startTime = System.currentTimeMillis();
        }
        try
        {
            personRemote = personRemoteHome.findByPrimaryKey(pk);
            if (logging)
            {
                long endTime = System.currentTimeMillis();
                log("Succeeded: findByPrimaryKey(" + pk + ")");
                log("Execution time: " + (endTime - startTime) + " ms.");
            }
        }
        catch (Exception e)
        {
            if (logging)
            {
                log("Failed: findByPrimaryKey(" + pk + ")");
            }
            e.printStackTrace();
        }        if (logging)
        {
            log("Return value from findByPrimaryKey(" + pk + "): " +
                personRemote + ".");
        }
        return personRemote;
    }
    private void log(String message)
    {

    }    //Main method    public static void main(String[] args)
    {
        PersonTestClient1 client = new PersonTestClient1();
        client.create(3,"sadfas","jkjl;kjk;l");

    }
}

javax.sql.DataSource ds = (javax.sql.DataSource) ctx.
lookup("java:comp/env/jdbc/oraclePool");
可能是这个的问题
把这个java:comp/env/jdbc/oraclePool直接改为你在weblogic中用的datasorce的jndi名字试试

在weblogic上的DataSource的jndi名是DataSource,否则在发布时就会提示找不到此jndi的名称呀

to NewStarter(沧海一笑$独孤求胜)
我按照你的建议，用bmp实现，直接用datasource的jndi的名称DataSource也不行

看出错信息应该是JNDI没有错，能产生SQLException而不是NamingException，所以还是应该是数据库的操作权限没有

但是直接用同样的用户名和密码（数据库）用jdbc可以访问，而且我把这个工程考到别的机器上可以正常运行（操作数据库），没有报异常

那不就是了，都没有问题，你的EJB容器有问题

哈哈，已经解决啦，谢谢大家！！！
原来时连接池配置有问题
原来配置为：
Properties
(key=value):一项有如下：username=username
                      password=password
                      dll=ocijdbc8
                      protocol=thin ACLName:username
Password:password改为：
Properties
(key=value):一项有如下：username=username
ACLName:
Password:password注：username,password为数据库访问用户名和密码

调试易

无法访问EntityBean

解决方案 »