ejb2.rar_bmp ejb2_ejb2_ejb2 cmp b

package customer.ejb; import java.rmi.RemoteException; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import javax.ejb.EJBException; import javax.ejb.EntityBean; import javax.ejb.EntityContext; import javax.ejb.RemoveException; import javax.ejb.CreateException; import customer.interfaces.CustomerData; import java.sql.*; import java.util.*; /** * XDoclet-based BMP entity bean. * * To generate EJB related classes using XDoclet: * * - Add Standard EJB module to XDoclet project properties * - Customize XDoclet configuration * - Run XDoclet * * Below are the xdoclet-related tags needed for this EJB. * * @ejb.bean name="Customer" * display-name="Name for Customer" * description="Description for Customer" * jndi-name="ejb/Customer" * type="BMP" * view-type="local" */ public class CustomerBean implements EntityBean { /** The entity context */ private EntityContext context; private Connection conn=null; private String id; private String psw; private String name; private String sex; int age; /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public String getId() { return id; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public void setId(String id) { this.id = id; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public String getName() { return name; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public void setName(String name) { this.name = name; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public String getSex() { return sex; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public void setSex(String sex) { this.sex = sex; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public int getAge() { return age; } /** * An example business method * * @ejb.interface-method view-type = "local" * * @throws EJBException Thrown if method fails due to system-level error. */ public void setAge(int age) { this.age = age; } public CustomerBean() { // TODO Auto-generated constructor stub } /** * There are zero or more ejbCreate<METHOD>(...) methods, whose signatures match * the signatures of the create<METHOD>(...) methods of the entity bean?s home interface. * The container invokes an ejbCreate<METHOD>(...) method on an entity bean instance * when a client invokes a matching create<METHOD>(...) method on the entity bean?s * home interface.<br> * * The entity bean provider?s responsibility is to initialize the instance in the ejbCreate< * METHOD>(...) methods from the input arguments, using the get and set accessor * methods, such that when the ejbCreate<METHOD>(...) method returns, the persistent * representation of the instance can be created. <br> * * The entity bean provider must not attempt to modify the values of cmr-fields in an ejbCreate< * METHOD(...) method; this should be done in the ejbPostCreate<METHOD(...) method instead.<br> * * The entity object created by the ejbCreate<METHOD> method must have a unique primary * key. This means that the primary key must be different from the primary keys of all the existing * entity objects within the same home. However, it is legal to reuse the primary key of a previously * removed entity object. The implementation of the bean provider?s ejbCreate< * METHOD>(...) methods should be coded to return a null.<br> * * An ejbCreate<METHOD>(...) method executes in the transaction context determined by * the transaction attribute of the matching create<METHOD>(...) method. * The database insert operations are performed by the container within the same * transaction context after the Bean Provider?s ejbCreate<METHOD>(...) method completes. * * @throws CreateException Thrown if method fails due to system-level error. * * @throws CreateException * * @ejb.create-method */ public String ejbCreate(String id,String psw,String name,String sex, int age) throws CreateException { //创建一条记录 try{ String sql = "insert into Customer values(?,?,?,?,?)"; PreparedStatement pstmt = conn.prepareStatement(sql); pstmt.setString(1, id); pstmt.setString(2,psw); pstmt.setString(3, name); pstmt.setString(4,sex); pstmt.setInt(5,age); int ret = pstmt.executeUpdate(); if(ret == 0) throw new EJBException("插入记录失败。"); else{ //保存当前值 this.setId(id); this.setPsw(psw); this.setName(name); this.setAge(age); this.setSex(sex); pstmt.close(); } }catch(Exception ex){ throw new EJBException(ex); } return this.id; //一定要返回当前的主键值对象 } /** * For each ejbCreate<METHOD>(...) method, there is a matching ejbPostCreate< * METHOD>(...) method that has the same input parameters but whose return type is * void. The container invokes the matching ejbPostCreate<METHOD>(...) method on * an instance after it invokes the ejbCreate<METHOD>(...) method with the same arguments. * The instance can discover the primary key by calling getPrimaryKey() on its * entity context object. <br> * * The entity object identity is available during the ejbPostCreate<METHOD>(...) * method. The instance may, for example, obtain the component interface of the associated entity * object and pass it to another enterprise bean as a method argument.<br> * * The entity Bean Provider may use the ejbPostCreate<METHOD>(...) to set the values * of cmr-fields to complete the initialization of the entity bean instance. * An ejbPostCreate<METHOD>(...) method executes in the same transaction context as * the previous ejbCreate<METHOD>(...) method. * * @throws CreateException Thrown if method fails due to system-level error. */ public void ejbPostCreate() throws CreateException { } public void ejbActivate() throws EJBException, RemoteException { // TODO Auto-generated method stub //关联主键值 this.id = (String)context.getPrimaryKey(); //不能省 } public void ejbLoad() throws EJBException, RemoteException { // TODO Auto-generated method stub //根据主键值，载入其他字段值 try{ String sql = "select * from Customer where id = ?"; PreparedStatement pstmt = conn.prepareStatement(sql); pstmt.setString(1, this.id); //调用ejbActivate之后关联的ID ResultSet rs = pstmt.executeQuery(); if(rs.next()){ this.setPsw(rs.getString("psw")); this.setName(rs.getString("name")); this.setSex(rs.getString("sex")); this.setAge(rs.getInt("age")); pstmt.close(); }else throw new EJBException("找不到相应记录。"); }catch(Exception ex){ throw new EJBException(ex); } } public void ejbPassivate() throws EJBException, RemoteException { // TODO Auto-generated method stub this.id = null; //移除主键值关联 } public void ejbRemove() throws RemoveException, EJBException, RemoteException { // TOD