一个简单的EJB实例.用DB2连接.JSP页面.很好用.供大家学习

				package salesdb;								import com.ibm.ejs.container.*;								/**				 * EJSCMPLocationHomeBean_176caeeb				 */				public class EJSCMPLocationHomeBean_176caeeb extends EJSHome {					/**					 * EJSCMPLocationHomeBean_176caeeb					 */					public EJSCMPLocationHomeBean_176caeeb() throws java.rmi.RemoteException {						super();	}					/**					 * findByPrimaryKey_Local					 */					public salesdb.LocationLocal findByPrimaryKey_Local(salesdb.LocationKey primaryKey) throws javax.ejb.FinderException, java.rmi.RemoteException {						return (salesdb.LocationLocal)super.activateBean_Local(primaryKey);					}					/**					 * create_Local					 */					public salesdb.LocationLocal create_Local(java.lang.String zipcode, java.lang.String city, java.lang.String state, java.lang.String areacode) throws javax.ejb.CreateException, java.rmi.RemoteException {						BeanO beanO = null;						salesdb.LocationLocal result = null;						boolean createFailed = false;						boolean preCreateFlag = false;						try {							beanO = super.createBeanO();							salesdb.LocationBean bean = (salesdb.LocationBean) beanO.getEnterpriseBean();							preCreateFlag = super.preEjbCreate(beanO);							bean.ejbCreate(zipcode, city, state, areacode);							Object ejsKey = keyFromBean(bean);							result = (salesdb.LocationLocal) super.postCreate_Local(beanO, ejsKey, true);							bean.ejbPostCreate(zipcode, city, state, areacode);							super.afterPostCreate(beanO, ejsKey);						}						catch (javax.ejb.CreateException ex) {							createFailed = true;							throw ex;						} catch (java.rmi.RemoteException ex) {							createFailed = true;							throw ex;						} catch (Throwable ex) {							createFailed = true;							throw new CreateFailureException(ex);						} finally {							if(preCreateFlag && !createFailed)								super.afterPostCreateCompletion(beanO);							if (createFailed) {								super.createFailure(beanO);							}						}						return result;					}					/**					 * create_Local					 */					public salesdb.LocationLocal create_Local(java.lang.String zipcode) throws javax.ejb.CreateException, java.rmi.RemoteException {						BeanO beanO = null;						salesdb.LocationLocal result = null;						boolean createFailed = false;						boolean preCreateFlag = false;						try {							beanO = super.createBeanO();							salesdb.LocationBean bean = (salesdb.LocationBean) beanO.getEnterpriseBean();							preCreateFlag = super.preEjbCreate(beanO);							bean.ejbCreate(zipcode);							Object ejsKey = keyFromBean(bean);							result = (salesdb.LocationLocal) super.postCreate_Local(beanO, ejsKey, true);							bean.ejbPostCreate(zipcode);							super.afterPostCreate(beanO, ejsKey);						}						catch (javax.ejb.CreateException ex) {							createFailed = true;							throw ex;						} catch (java.rmi.RemoteException ex) {							createFailed = true;							throw ex;						} catch (Throwable ex) {							createFailed = true;							throw new CreateFailureException(ex);						} finally {							if(preCreateFlag && !createFailed)								super.afterPostCreateCompletion(beanO);							if (createFailed) {								super.createFailure(beanO);							}						}						return result;					}					/**					 * findLocationfkByLocationfkPurchaseInverseKey_Local					 */					public salesdb.LocationLocal findLocationfkByLocationfkPurchaseInverseKey_Local(salesdb.PurchaseKey key) throws javax.ejb.FinderException, java.rmi.RemoteException {						salesdb.LocationLocal result = null;						EntityBeanO beanO = null;										salesdb.LocationKey pKey = null;						try {							beanO = super.getFinderEntityBeanO();							salesdb.ConcreteLocation_176caeeb bean = (salesdb.ConcreteLocation_176caeeb) beanO.getEnterpriseBean();							pKey = bean.ejbFindLocationfkByLocationfkPurchaseInverseKey_Local(key);							result = (salesdb.LocationLocal)activateBean_Local(pKey);							super.releaseFinderEntityBeanO(beanO);							beanO = null;						}						catch (javax.ejb.FinderException finderEx) {							super.releaseFinderEntityBeanO(beanO);							beanO = null;							throw finderEx;						}						finally {							if (beanO != null )								super.discardFinderEntityBeanO(beanO);						}						return result;					}					/**					 * findByPrimaryKeyForCMR_Local					 */					public salesdb.LocationLocal findByPrimaryKeyForCMR_Local(salesdb.LocationKey key) throws javax.ejb.FinderException, java.rmi.RemoteException {						return (salesdb.LocationLocal)super.activateBean_Local(key);					}					/**					 * keyFromBean					 */					public Object keyFromBean(javax.ejb.EntityBean generalEJB) {						salesdb.ConcreteLocation_176caeeb tmpEJB = (salesdb.ConcreteLocation_176caeeb) generalEJB;						salesdb.LocationKey keyClass = new salesdb.LocationKey();						keyClass.zipcode = tmpEJB.getZipcode();						return keyClass;					}					/**					 * keyFromFields					 */					public salesdb.LocationKey keyFromFields(java.lang.String f0) {						salesdb.LocationKey keyClass = new salesdb.LocationKey();						keyClass.zipcode = f0;						return keyClass;					}				}