new97架构下单表操作从前台到后台全过程
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1.VO : 放在pub工程中,pub.vo
package com.cattsoft.demo4bss.pub.vo;
import java.io.Serializable;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
public class CompanyVO {
/** identifier field */
private String id;
/** nullable persistent field */
private String name;
/** full constructor */
private String createDate;
private int currentPageNo;
public CompanyVO(String id, String name) {
this.id = id;
this.name = name;
}
/** default constructor */
public CompanyVO() {
}
/** minimal constructor */
public CompanyVO(String id) {
this.id = id;
}
public String getId() {
return this.id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public String toString() {
return new ToStringBuilder(this)
.append("id", getId())
.toString();
}
public boolean equals(Object other) {
if ( !(other instanceof CompanyVO) ) return false;
CompanyVO castOther = (CompanyVO) other;
return new EqualsBuilder()
.append(this.getId(), castOther.getId())
.isEquals();
}
public int hashCode() {
return new HashCodeBuilder()
.append(getId())
.toHashCode();
}
public String getCreateDate() {
return createDate;
}
public void setCreateDate(String createDate) {
this.createDate = createDate;
}
public int getCurrentPageNo() {
return currentPageNo;
}
public void setCurrentPageNo(int currentPageNo) {
this.currentPageNo = currentPageNo;
}
}
2.DAO: 由middagen生成,自己加以修改
package com.cattsoft.new97.ejb.dao;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import net.sf.hibernate.Hibernate;
import net.sf.hibernate.Query;
import java.util.*;
import net.sf.hibernate.HibernateException;
import com.cattsoft.new97.ejb.pub.BaseDAO;
import com.cattsoft.new97.ejb.hibernate.*;
import com.cattsoft.new97.ejb.util.*;
import com.cattsoft.demo4bss.pub.util.*;
import com.cattsoft.demo4bss.pub.err.*;
import com.cattsoft.demo4bss.pub.vo.*;
public class CompanyDAO extends BaseDAO{
private static Log log = LogFactory.getLog(CompanyDAO.class);
public CompanyDAO() throws SysException{
}
public void addCompany(CompanyVO vo)throws SysException, AppException {
Company company = new Company();
company.setId(vo.getId());
company.setName(vo.getName());
try {
session.save(company);
flushSession();
log.info("flushSession");
//日志应该在EJB层处理了,因为在DAO层已经没有事务
//log.info("新建公司基本信息:公司号" + company.getId() + ",公司名称" + company.getName());
}
catch (HibernateException he) {
throw new SysException("10009", he);
}
catch (SysException se) {
se.appendMsg("CompanyDAO.addCompany");
throw se;
}
}
public void updateCompany(CompanyVO vo)throws SysException{
Company company = null;
try {
company = (Company) session.load(Company.class, vo.getId());
company.setId(vo.getId());
company.setName(vo.getName());
}
catch (HibernateException he) {
//抛出业务错误。不需要处理,仅给用户参考即可。
// throw new AppException("10009",he);
}
try {
session.saveOrUpdate(company);
flushSession();
//log.info("修改公司基本信息:公司号" + company.getId() + ",公司名称" + company.getName());
}
catch (HibernateException he) {
he.printStackTrace();
throw new SysException("10010", he);
}
}
public void del(String companyId) throws SysException {
Company v1 = null;
try {
v1 = (Company) session.load(Company.class, companyId);
}
catch (HibernateException he) {
throw new SysException("10013", he);
}
try {
session.delete(v1);
flushSession();
}
catch (HibernateException he) {
throw new SysException("10013", he);
}
catch (SysException se) {
se.appendMsg("CompanyDAO.del");
throw se;
}
}
public PageDisplay queryCompany(CompanyVO vo) throws SysException{
PageDisplay page = new PageDisplay();
List lst = null;
page.setCurrentPageNo(vo.getCurrentPageNo());
//get query total no;
String queryString = "select count(cust) from Cust as cust ";
String queryWhere = "where 1=1 ";
Query query = null;
if (vo.getId().length() > 0) {
queryWhere += " and cust.custId= '" + vo.getId() + "'";
}
if (vo.getName().length() > 0) {
queryWhere += " and cust.custName like '%" + vo.getName() + "%'";
}
Query query1 = null;
queryString += queryWhere;
try {
query1 = session.createQuery(queryString);
}
catch (HibernateException he) {
throw new SysException("findCust1", he);
}
catch (java.lang.NullPointerException ne) {
throw new SysException("findCustNull", ne);
}
try {
page.setTotalRecNo(HibernateUtil.getCount(query1));
}
catch (SysException he) {
he.appendMsg("CustDAO.findCusts");
throw he;
}
//get query accord page
try {
queryString = "select cust from Cust as cust " + queryWhere;
query = session.createQuery(queryString);
}
catch (HibernateException he) {
throw new SysException("findCust2", he);
}
query.setFirstResult(page.getFirstRecNo());
query.setMaxResults(page.getMaxNo());
//page.setCurrentRecNo(new HibernateUtil(query).getCount());
try {
lst = query.list();
flushSession();
}
catch (HibernateException he) {
he.printStackTrace();
throw new SysException("findCust3", he);
}
page.setCurrentRecNo(lst.size());
page.setLst(lst);
return page;
}
}
3.ejb层(sessionBean): 调用DAO
package com.cattsoft.new97.ejb.company;
import javax.ejb.*;
//import com.cattsoft.demo4bss.form.CustForm;
import com.cattsoft.new97.ejb.dao.*;
import com.cattsoft.new97.ejb.util.*;
import com.cattsoft.new97.ejb.hibernate.*;
import java.util.Map;
import java.rmi.*;
import javax.rmi.*;
import javax.naming.*;
import javax.transaction.UserTransaction;
import com.cattsoft.demo4bss.pub.err.*;
import com.cattsoft.new97.ejb.pub.*;
import com.cattsoft.new97.ejb.util.*;
import com.cattsoft.demo4bss.pub.util.*;
//import ejbcall.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.cattsoft.demo4bss.pub.vo.*;
public class McompanyEJBBean
implements SessionBean {
SessionContext sessionContext;
private static Log log = LogFactory.getLog(McompanyEJBBean.class);
public void ejbCreate() throws CreateException {
}
public void ejbRemove() {
}
public void ejbActivate() {
}
public void ejbPassivate() {
}
public void setSessionContext(SessionContext sessionContext) {
this.sessionContext = sessionContext;
}
public void addCompany(CompanyVO vo) throws
SysException, AppException {
try {
HibernateSession.openSession();
CompanyDAO companyDAO = new CompanyDAO();
companyDAO.addCompany(vo);
//test 以下语句测试数据库链接情况。延长20秒,在控制台可以看到链接情况。
//try{Thread.sleep(20000);}catch(Exception e){}
}
catch (SysException se) {
this.sessionContext.setRollbackOnly();
se.appendMsg("CompanyEJBBean.addCompany");
throw se;
}
catch (AppException se) {
this.sessionContext.setRollbackOnly();
se.appendMsg("CompanyEJBBean.addCompany");
throw se;
}
finally {
HibernateSession.closeSession();
}
}
public void updateCompany(CompanyVO vo) throws
SysException, AppException {
try {
HibernateSession.openSession();
CompanyDAO companyDAO = new CompanyDAO();
companyDAO.updateCompany(vo);
}
catch (SysException e) {
this.sessionContext.setRollbackOnly();
e.appendMsg("CompanyEJBBean.updateCompany");
throw e;
}
/** catch (AppException ae) {
this.sessionContext.setRollbackOnly();
ae.appendMsg("CompanyEJBBean.updateCompany");
throw ae;
} */
finally {
HibernateSession.closeSession();
}
}
public void delCompany(String id) throws
SysException, AppException {
/**@todo Complete this method*/
try {
HibernateSession.openSession();
CompanyDAO companyDAO = new CompanyDAO();
companyDAO.del(id);
}
catch (SysException se) {
this.sessionContext.setRollbackOnly();
se.appendMsg("CompanyEJBBean.del");
throw se;
}
finally {
HibernateSession.closeSession();
}
}
public PageDisplay findCompany(CompanyVO vo) throws SysException {
PageDisplay p = null;
try {
HibernateSession.openSession();
CompanyDAO companyDAO = new CompanyDAO();
p = companyDAO.queryCompany(vo);
return p;
}
catch (SysException e) {
log.debug(e.getMessage());
this.sessionContext.setRollbackOnly();
e.appendMsg("CompanyEJBBean.findcompany");
throw e;
}
finally {
HibernateSession.closeSession();
}
}
}
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