gb=(Guestbook)PortableRemoteObject.narrow(gbIter.next(),Guestbook.class);--->gb = (Guestbook)gbIter.next();还有一个可能是你的数据源没有配置好,ejb服务器找得是自己默认的数据源
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import java.util.*;
import java.sql.*;public interface Guestbook extends javax.ejb.EJBLocalObject {
public void setName(String name);
public String getName();
public void setSex(String sex);
public String getSex();
public void setQq(String qq);
public String getQq();
public void setEmail(String email);
public String getEmail();
public void setPhoto(String photo);
public String getPhoto();
public void setContent(String content);
public String getContent();
public void setPostdate(Timestamp postdate);
public Timestamp getPostdate();
public Integer getGuestbookId();
}*************************************package com.jeoky.ejb.guestbook;import javax.ejb.*;
import java.util.*;
import java.sql.*;
import javax.sql.*;
import javax.naming.*;public class GuestbookBean implements EntityBean {
EntityContext entityContext;
java.lang.String name;
java.lang.String sex;
java.lang.String qq;
java.lang.String email;
java.lang.String photo;
java.lang.String content;
java.sql.Timestamp postdate;
java.lang.Integer guestbookId; private Connection conn;
private String dbJndi="java:/MySqlDS";
private String dbId="";
private String dbPassword=""; public GuestbookPK ejbCreate(java.lang.Integer guestbookId) throws CreateException {
setGuestbookId(guestbookId);
return null;
}
public void ejbPostCreate(java.lang.Integer guestbookId) throws CreateException {
/**@todo Complete this method*/
}
public void ejbRemove() throws RemoveException {
/**@todo Complete this method*/
}
public void setName(java.lang.String name) {
this.name = name;
}
public void setSex(java.lang.String sex) {
this.sex = sex;
}
public void setQq(java.lang.String qq) {
this.qq = qq;
}
public void setEmail(java.lang.String email) {
this.email = email;
}
public void setPhoto(java.lang.String photo) {
this.photo = photo;
}
public void setContent(java.lang.String content) {
this.content = content;
}
public void setPostdate(java.sql.Timestamp postdate) {
this.postdate = postdate;
}
public void setGuestbookId(java.lang.Integer guestbookId) {
this.guestbookId = guestbookId;
}
public java.lang.String getName() {
return name;
}
public java.lang.String getSex() {
return sex;
}
public java.lang.String getQq() {
return qq;
}
public java.lang.String getEmail() {
return email;
}
public java.lang.String getPhoto() {
return photo;
}
public java.lang.String getContent() {
return content;
}
public java.sql.Timestamp getPostdate() {
return postdate;
}
public java.lang.Integer getGuestbookId() {
return guestbookId;
}
public GuestbookPK ejbFindByPrimaryKey(GuestbookPK pk) throws FinderException {
/**@todo Complete this method*/
return null;
}
public void ejbLoad() {
/**@todo Complete this method*/
}
public void ejbStore() {
/**@todo Complete this method*/
}
public void ejbActivate() {
}
public void ejbPassivate() {
}
public void unsetEntityContext() {
this.entityContext = null;
}
public void setEntityContext(EntityContext entityContext) {
this.entityContext = entityContext;
}
public java.util.Collection ejbFindAll() throws FinderException {
/**@todo Complete this method*/
Vector v=new Vector();
try{
System.out.println("ejbFindAll()");
getConnection();
PreparedStatement pds=conn.prepareStatement("select * from guestbook");
ResultSet res=pds.executeQuery();
while(res.next()){
Integer id=new Integer(res.getInt("guestbook_id"));
v.addElement(new GuestbookPK(id));
}
res.close();
pds.close();
conn.close();
}catch(Exception ex){
ex.printStackTrace();
}
return v;
} //取得资料库连结
private void getConnection() throws NamingException, SQLException { InitialContext ic=new InitialContext();
DataSource ds=(DataSource) ic.lookup(dbJndi);
conn= ds.getConnection(dbId, dbPassword);
System.out.println("getConnection():OK");
}
}*********************************package com.jeoky.ejb.guestbook;import javax.ejb.*;
import java.util.*;public interface GuestbookHome extends javax.ejb.EJBLocalHome {
public Guestbook create(Integer guestbookId) throws CreateException;
public Collection findAll() throws FinderException;
public Guestbook findByPrimaryKey(GuestbookPK pk) throws FinderException;
}***********************************package com.jeoky.ejb.guestbook;import java.io.*;public class GuestbookPK implements Serializable { public Integer guestbookId; public GuestbookPK() {
} public GuestbookPK(Integer guestbookId) {
this.guestbookId = guestbookId;
}
public boolean equals(Object obj) {
if (obj != null) {
if (this.getClass().equals(obj.getClass())) {
GuestbookPK that = (GuestbookPK) obj;
return (((this.guestbookId == null) && (that.guestbookId == null)) || (this.guestbookId != null && this.guestbookId.equals(that.guestbookId)));
}
}
return false;
}
public int hashCode() {
return guestbookId.hashCode();
}
}