spring注入不了对象、报空指针异常
spring配置文件
<!-- sessionfactory配置 -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
</bean>
<!-- txManager配置 -->
<bean id="txManage" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<!-- 定义事务通知 -->
<tx:advice id="txAdvice" transaction-manager="txManage">
<tx:attributes>
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut expression="execution(* com.ywt.dao..*.*(..))" id="serverMethod"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="serverMethod"/>
</aop:config>
<!-- 实体bean -->
<bean id="detailbean" class="com.ywt.bean.Bug_detail"></bean>
<bean id="projectbean" class="com.ywt.bean.Bug_project"></bean>
<!-- dao层 -->
<bean id="detailDaoImpl" class="com.ywt.dao.impl.Bug_detailDaoImpl">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<bean id="projectDaoImpl" class="com.ywt.dao.impl.Bug_projectDaoImpl">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<!-- service层 -->
<bean id="detailServiceDaoimpl" class="com.ywt.service.impl.Bug_detailServiceImpl">
<property name="detailDao" ref="detailDaoImpl"></property>
</bean>
<bean id="projectServiceDaoimpl" class="com.ywt.service.impl.Bug_projectServiceImpl">
<property name="projectDao" ref="projectDaoImpl"></property>
</bean>
<!-- ActionBean -->
<bean id="bug_detailAction" class="com.ywt.web.action.Bug_detailAction">
<property name="bug_detailService" ref="detailServiceDaoimpl"></property>
<property name="bug_projectService" ref="projectServiceDaoimpl"></property>
</bean>
action代码
package com.ywt.web.action;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
import com.ywt.bean.Bug_detail;
import com.ywt.bean.Bug_project;
import com.ywt.service.Bug_detailService;
import com.ywt.service.Bug_projectService;
public class Bug_detailAction extends ActionSupport {
private static final long serialVersionUID = 1L;
private List<Bug_detail> list;
private Bug_detailService bug_detailService;
private Bug_projectService bug_projectService;
private List<Bug_project> list2;
public String getBUGAll(){
try {
list = bug_detailService.getAll();
list2 = bug_projectService.getProject();
return SUCCESS;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return INPUT;
}
}
public List<Bug_detail> getList() {
return list;
}
public void setList(List<Bug_detail> list) {
this.list = list;
}
public List<Bug_project> getList2() {
return list2;
}
public void setList2(List<Bug_project> list2) {
this.list2 = list2;
}
public Bug_detailService getBug_detailService() {
return bug_detailService;
}
public void setBug_detailService(Bug_detailService bug_detailService) {
this.bug_detailService = bug_detailService;
}
public Bug_projectService getBug_projectService() {
return bug_projectService;
}
public void setBug_projectService(Bug_projectService bug_projectService) {
this.bug_projectService = bug_projectService;
}
}
service
package com.ywt.service.impl;
import java.util.List;
import com.ywt.bean.Bug_detail;
import com.ywt.dao.Bug_detailDao;
import com.ywt.service.Bug_detailService;
public class Bug_detailServiceImpl implements Bug_detailService {
private Bug_detailDao detailDao;
public List<Bug_detail> getAll() {
return detailDao.getAll();
}
public List<Bug_detail> getProjectBug(Integer pid) {
return detailDao.getProjectBug(pid);
}
public boolean addBug(Bug_detail detail) {
return detailDao.addBug(detail);
}
public Bug_detailDao getDetailDao() {
return detailDao;
}
public void setDetailDao(Bug_detailDao detailDao) {
this.detailDao = detailDao;
}
}
package com.ywt.service.impl;
import java.util.List;
import com.ywt.bean.Bug_project;
import com.ywt.dao.Bug_projectDao;
import com.ywt.dao.impl.Bug_projectDaoImpl;
import com.ywt.service.Bug_projectService;
public class Bug_projectServiceImpl implements Bug_projectService {
private Bug_projectDao projectDao ;
public List<Bug_project> getProject() {
return projectDao.getProject();
}
public Bug_projectDao getProjectDao() {
return projectDao;
}
public void setProjectDao(Bug_projectDao projectDao) {
this.projectDao = projectDao;
}
}
dao层
package com.ywt.dao.impl;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.ywt.bean.Bug_detail;
import com.ywt.dao.Bug_detailDao;
public class Bug_detailDaoImpl extends HibernateDaoSupport implements Bug_detailDao {
@SuppressWarnings("unchecked")
public List<Bug_detail> getAll() {
Session session = null;
try {
String hql = "from Bug_detail";
session = this.getSessionFactory().openSession();
Query query = session.createQuery(hql);
return query.list();
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
session.close();
}
return null;
}
@SuppressWarnings("unchecked")
public List<Bug_detail> getProjectBug(Integer pid) {
Session session = null;
try {
String hql = "from Bug_detail as b where b.p_id = ?";
session = this.getSessionFactory().openSession();
Query query = session.createQuery(hql);
query.setInteger(0, pid);
return query.list();
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
session.close();
}
return null;
}
public boolean addBug(Bug_detail detail) {
boolean flg = true;
Session session = null;
try {
session = this.getSessionFactory().openSession();
session.beginTransaction().begin();
session.save(detail);
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
session.beginTransaction().rollback();
flg = false;
}finally{
session.beginTransaction().commit();
session.close();
}
return flg;
}
}
package com.ywt.dao.impl;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.ywt.bean.Bug_project;
import com.ywt.dao.Bug_projectDao;
public class Bug_projectDaoImpl extends HibernateDaoSupport implements Bug_projectDao {
public List<Bug_project> getProject() {
Session session = null;
try {
String hql = "from Bug_project";
session = this.getSessionFactory().openSession();
Query query = session.createQuery(hql);
return query.list();
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
session.close();
}
return null;
}
}
[解决办法]
我其实就是想知道你哪个对象为空？
找出来这个不难吧？
[解决办法]
你这遇到什么问题了吗？ 我有点不明白 题目说无法注入对象 那好歹也让我们看看哪个对象无法注入下
[解决办法]
改为<aop:pointcut expression="execution(* com.ywt.dao.*.*(..))" id="serverMethod"/>
private Bug_detailService bug_detailService;
private Bug_projectService bug_projectService;//这里定义的什么对象，就主要什么，bean的id值和这里的要一样
[解决办法]
表示没发现注入错误 我尽力了 坐等结果了
