最新在学习S2SH的整合，遇到了不少问题。。现在dao层只有IBaseDao 和 BaseDaoImpl；这两个做了CURD操作的的接口，和实现。Service层中的继承泛型dao层，问题是我在junit单元测试的时候，继承basedao的CURD操作没问题，但是service层自己的独有的方法一直报空指针，各位大神帮忙瞅瞅，很急，小弟先在这谢谢了！！下面是我代码！！IBaseDao.javapackage com.yeka.oa.dao;
import java.util.List;
public interface IBaseDao<T> {
public void save(T t);
public void delete(Integer id);
public void update(T t);
public T getObjectById(Integer id);
public List<T> getObjectAll();
public List<T> getObjetctByIds(Integer[] ids);
}BaseDaoImpl.javapackage com.yeka.oa.dao;
import java.lang.reflect.ParameterizedType;
import java.util.List;
import javax.annotation.Resource;
import org.hibernate.SessionFactory;
import org.springframework.transaction.annotation.Transactional;
@SuppressWarnings("unchecked")
@Transactional
public class BaseDaoImpl<T> implements IBaseDao<T> {
// 注入sessionFactory
@Resource
public SessionFactory sessionFactory;
/**
* @return the sessionFactory
*/
public SessionFactory getSessionFactory() {
return sessionFactory;
}
/**
* @param sessionFactory the sessionFactory to set
*/
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
Class clazz;
// 得到T的真实类型
public BaseDaoImpl() {
ParameterizedType tP = (ParameterizedType) this.getClass()
.getGenericSuperclass();
clazz = (Class) tP.getActualTypeArguments()[0];
System.out.println(clazz.getName());
}
/**
* 删除
*/
public void delete(Integer id) {
// TODO Auto-generated method stub
sessionFactory.getCurrentSession().delete(
sessionFactory.getCurrentSession().get(clazz, id));
}
/**
* 获取对象列表
*/
public List<T> getObjectAll() {
// TODO Auto-generated method stub
return sessionFactory.getCurrentSession().createQuery(
"from " + clazz.getSimpleName()).list();
}
/**
* 根据ID查询对象
*/
public T getObjectById(Integer id) {
return (T) sessionFactory.getCurrentSession().get(clazz, id);
}
/**
* 根据ID数组获取一组对象集合
*/
public List<T> getObjetctByIds(Integer[] ids) {
return sessionFactory.getCurrentSession().createQuery(
"from " + clazz.getSimpleName() + " where id in(:ids)")
.setParameter("ids", ids).list();
}
public void save(T t) {
sessionFactory.getCurrentSession().save(t);
}
public void update(T t) {
sessionFactory.getCurrentSession().update(t);
}
}IEmployeeService.javapackage com.yeka.oa.service;
import java.util.List;
import javax.annotation.Resource;
import com.yeka.oa.dao.IBaseDao;
import com.yeka.oa.entity.SysEmployee;
public interface IEmployeeService extends IBaseDao<SysEmployee> {
//定义特有方法
//登录
public boolean login(String username,String password);
//分页查询
public List<SysEmployee> getPagination(int pageIndex, int pageSize);
}EmployeeServiceImpl.javapackage com.yeka.oa.service.impl;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.yeka.oa.dao.BaseDaoImpl;
import com.yeka.oa.entity.SysEmployee;
import com.yeka.oa.service.IEmployeeService;
@Transactional
@Service("employeeService")
public class EmployeeServiceImpl extends BaseDaoImpl<SysEmployee> implements IEmployeeService {
Session session = super.getSessionFactory().getCurrentSession();
@SuppressWarnings("unchecked")
public List<SysEmployee> getPagination(int pageIndex, int pageSize) {
String hql = "from SysEmployee";
Query query = session.createQuery(hql);
query.setMaxResults(pageSize);// 一次查询几条
query.setFirstResult((pageIndex - 1) * pageSize);// 从第几条开始查询
return query.list();
}
public boolean login(String username, String password) {
boolean flag = true;
String hql = "select password from SysEmployee where username='"
+ username + "'";
Query query = session.createQuery(hql);
String temppwd = (String) query.uniqueResult();
if (password != null && temppwd.equals(password)) {
flag = true;
} else {
flag = false;
}
return flag;
}
} Test.javaimport org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.transaction.annotation.Transactional;
import com.yeka.oa.service.IEmployeeService;
public class Test {
@Transactional
@org.junit.Test
public void test(){
ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
IEmployeeService employeeService = (IEmployeeService) context.getBean("employeeService");
employeeService.getObjectAll();
employeeService.login("11", "111");
}
}
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