其实我也是这么操作的 但总是删不掉 不知道为什么 我是在会话bean里通过cmp的本地引用来访问cmp的 我的两个bean代码如下：package booksys;
import javax.ejb.*;
abstract public class BookinfoBean implements EntityBean {
EntityContext entityContext;
public java.lang.String ejbCreate(java.lang.String bookid) throws CreateException {
setBookid(bookid);
return null;
}
public void ejbPostCreate(java.lang.String bookid) throws CreateException {
/**@todo Complete this method*/
}
public void ejbRemove() throws RemoveException {
/**@todo Complete this method*/
}
public abstract void setBookid(java.lang.String bookid);
public abstract void setBooktype(java.lang.String booktype);
public abstract void setBookname(java.lang.String bookname);
public abstract void setAuthor(java.lang.String author);
public abstract void setPublisher(java.lang.String publisher);
public abstract void setPubtime(java.lang.String pubtime);
public abstract java.lang.String getBookid();
public abstract java.lang.String getBooktype();
public abstract java.lang.String getBookname();
public abstract java.lang.String getAuthor();
public abstract java.lang.String getPublisher();
public abstract java.lang.String getPubtime();
public void ejbLoad() {
/**@todo Complete this method*/
}
public void ejbStore() {
/**@todo Complete this method*/
}
public void ejbActivate() {
/**@todo Complete this method*/
}
public void ejbPassivate() {
/**@todo Complete this method*/
}
public void unsetEntityContext() {
this.entityContext = null;
}
public void setEntityContext(EntityContext entityContext) {
this.entityContext = entityContext;
}
}
package booksys;
import javax.ejb.*;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.util.*;
public class facadeBean implements SessionBean {
SessionContext sessionContext;
public Bookinfo bookinfo=null;
private BookinfoHome bookinfoHome=null;
private Book book=null;
//通过实体bean：bookinfo的本地引用（bookref）获得该实体bean的Home接口对象
//且在每次创建和激活sessionBean的时候各获取一次
public void ejbCreate() throws CreateException {
try {
Context context=new InitialContext();
Object ref=context.lookup("java:/comp/env/bookref");
bookinfoHome=(BookinfoHome)ref;
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public void ejbRemove() {
}
//通过实体bean：bookinfo的本地引用（bookref）获得该实体bean的Home接口对象
//且在每次创建和激活sessionBean的时候各获取一次
public void ejbActivate() {
try {
Context context=new InitialContext();
Object ref=context.lookup("java:/comp/env/bookref");
bookinfoHome=(BookinfoHome)ref;
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public void ejbPassivate() {
}
public void setSessionContext(SessionContext sessionContext) {
this.sessionContext = sessionContext;
}
//通过指定bookid查询书籍信息，返回Book类的一个实例
public Book getSpecifiedBook(String bookid) {
try {
bookinfo=bookinfoHome.findByPrimaryKey(bookid);
book=new Book(bookinfo.getBookid(),bookinfo.getBooktype(),bookinfo.getBookname(),bookinfo.getAuthor(),bookinfo.getPublisher(),bookinfo.getPubtime());
}
catch (Exception ex) {
ex.printStackTrace();
}
return book;
}
//通过知道bookname查询书籍信息，返回Book类的一个实例
public Book getBookByName(String bookname) {
try {
bookinfo=bookinfoHome.findBookByName(bookname);
book=new Book(bookinfo.getBookid(),bookinfo.getBooktype(),bookinfo.getBookname(),bookinfo.getAuthor(),bookinfo.getPublisher(),bookinfo.getPubtime());
}
catch (Exception ex) {
ex.printStackTrace();
}
return book;
}
//返回所有书籍集合
public java.util.Collection getAllBook() {
Collection result=new Vector();
try {
Collection collection=bookinfoHome.findAllBook();
System.out.println(collection.size());
Object object[]=collection.toArray();
for (int i = 0; i < object.length; i++) {
bookinfo=(Bookinfo)object;
result.add(new Book(bookinfo.getBookid(),bookinfo.getBooktype(),bookinfo.getBookname(),bookinfo.getAuthor(),bookinfo.getPublisher(),bookinfo.getPubtime()));
}
}
catch (Exception ex) {
ex.printStackTrace();
}
return result;
}
//通过书名模糊查询书籍记录
public java.util.Collection getBookBySubName(String subname) {
Collection result=new Vector();
try {
Collection collection=bookinfoHome.findBookBySubName(subname);
System.out.println(collection.size());
Object object[]=collection.toArray();
for (int i = 0; i < object.length; i++) {
bookinfo=(Bookinfo)object;
result.add(new Book(bookinfo.getBookid(),bookinfo.getBooktype(),bookinfo.getBookname(),bookinfo.getAuthor(),bookinfo.getPublisher(),bookinfo.getPubtime()));
}
}
catch (Exception ex) {
ex.printStackTrace();
}
return result;
}
public void updateBook(Book book) {
try {
bookinfo=bookinfoHome.findByPrimaryKey(book.getBookid());
bookinfo.remove();
bookinfo=bookinfoHome.create(book.getBookid());
bookinfo.setBooktype(book.getBooktype());
bookinfo.setBookname(book.getBookname());
bookinfo.setAuthor(book.getAuthor());
bookinfo.setPublisher(book.getPublisher());
bookinfo.setPubtime(book.getPubtime());
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public void addBook(Book book) {
try {
bookinfo=bookinfoHome.create(book.getBookid());
bookinfo.setBooktype(book.getBooktype());
bookinfo.setBookname(book.getBookname());
bookinfo.setAuthor(book.getAuthor());
bookinfo.setPublisher(book.getPublisher());
bookinfo.setPubtime(book.getPubtime());
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public void removeBookByID(String bookid) {
try {
bookinfo=bookinfoHome.create(bookid);
bookinfo.remove();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
其余的方法经过测试都能正常实现要求 唯独最下面的这个removeBookByID不行 希望大侠指教
