spring为什么注入不了对象

码拜

10年 ago

spring java Spring配置 <!– 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( dao...(..))” id=”serverMethod”/> <aop:advisor advice-ref=”txAdvice” pointcut-ref=”serverMethod”/> </aop:config> <!– dao层 –> <bean id=”ClassesDaoImpl” class=”dao.impl.ClassesDaoImpl”> <property name=”sessionFactory” ref=”sessionFactory”></property> </bean> <bean id=”StudentDaoImpl” class=”dao.impl.StudentDaoImpl”> <property name=”sessionFactory” ref=”sessionFactory”></property> </bean> action代码 package web.action; import java.util.List; import bean.Student; import com.opensymphony.xwork2.ActionSupport; import dao.StudentDao; public class StuAction extends ActionSupport { /** * / private static final long serialVersionUID = 1L; private StudentDao studentDao; private List<Student> stulist; public List<Student> getStulist() { return stulist; } public void setStulist(List<Student> stulist) { this.stulist = stulist; } public StudentDao getStudentDao() { return studentDao; } public void setStudentDao(StudentDao studentDao) { this.studentDao = studentDao; } public String getStus(){ try { stulist = studentDao.getStu(); return SUCCESS; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); return INPUT; } } } package 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 bean.Classes; import dao.ClassesDao; public class ClassesDaoImpl extends HibernateDaoSupport implements ClassesDao { public boolean save(Classes classes) { boolean flg = true; try { Session session =this.getSessionFactory().openSession(); session.save(classes); } catch (HibernateException e) { flg = false; e.printStackTrace(); } return flg; } @SuppressWarnings(“unchecked”) public List<Classes> getClassAll() { try { Session session = this.getSessionFactory().openSession(); Query query = session.createQuery(“from Classes”); return query.list(); } catch (HibernateException e) { e.printStackTrace(); } return null; } } package 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 bean.Student; import dao.StudentDao; public class StudentDaoImpl extends HibernateDaoSupport implements StudentDao{ public boolean addStu(Student student) { boolean flg = true; try { Session session = this.getSessionFactory().openSession(); session.save(student); } catch (HibernateException e) { // TODO Auto-generated catch block flg = false; e.printStackTrace(); } return flg; } public List<Student> getStu() { try { Session session = this.getSessionFactory().openSession(); Query query = session.createQuery(“from Student”); return query.list(); } catch (HibernateException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } } package dao; import java.util.List; import bean.Classes; public interface ClassesDao { /* * 添加班级 * @param classes * @return / public boolean save(Classes classes); /* * 得到所有班级 * @return / public List<Classes> getClassAll(); } package dao; import java.util.List; import bean.Student; public interface StudentDao { /* * 添加学生 * @param student * @return / public boolean addStu(Student student); /* * 得到学生 * @return */ public List<Student> getStu(); }
20分	<bean id=”ClassesDaoImpl” class=”dao.impl.ClassesDaoImpl”> <property name=”sessionFactory” ref=”sessionFactory”></property> </bean> <bean id=”StudentDaoImpl” class=”dao.impl.StudentDaoImpl”> <property name=”sessionFactory” ref=”sessionFactory”></property> </bean> id的值首字母都小写。
20分	引用 1 楼 fangmingshijie 的回复: <bean id=”ClassesDaoImpl” class=”dao.impl.ClassesDaoImpl”> <property name=”sessionFactory” ref=”sessionFactory”></property> </bean> <bean id=”StudentDaoImpl” cl…… +++
	2013-3-20 12:35:07 org.apache.catalina.core.AprLifecycleListener init 信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: F:\MyEclipse\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;D:\TomCat\bin 2013-3-20 12:35:08 org.apache.coyote.http11.Http11Protocol init 信息: Initializing Coyote HTTP/1.1 on http-8080 2013-3-20 12:35:08 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 1131 ms 2013-3-20 12:35:08 org.apache.catalina.core.StandardService start 信息: Starting service Catalina 2013-3-20 12:35:08 org.apache.catalina.core.StandardEngine start 信息: Starting Servlet Engine: Apache Tomcat/6.0.35 2013-3-20 12:35:08 org.apache.catalina.startup.HostConfig deployDescriptor 信息: Deploying configuration descriptor manager.xml 2013-3-20 12:35:08 org.apache.catalina.startup.HostConfig deployDirectory 信息: Deploying web application directory docs 2013-3-20 12:35:09 org.apache.catalina.startup.HostConfig deployDirectory 信息: Deploying web application directory ROOT 2013-3-20 12:35:09 org.apache.catalina.startup.HostConfig deployDirectory 信息: Deploying web application directory StuManageMent 2013-3-20 12:35:10 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring root WebApplicationContext 2013-3-20 12:35:26 org.apache.coyote.http11.Http11Protocol start 信息: Starting Coyote HTTP/1.1 on http-8080 2013-3-20 12:35:26 org.apache.jk.common.ChannelSocket init 信息: JK: ajp13 listening on /0.0.0.0:8009 2013-3-20 12:35:26 org.apache.jk.server.JkMain start 信息: Jk running ID=0 time=0/110 config=null 2013-3-20 12:35:27 org.apache.catalina.startup.Catalina start 信息: Server startup in 18854 ms 12:35:37,546 WARN OgnlValueStack:45 – Could not find property [struts.actionMapping] 12:35:37,625 WARN OgnlValueStack:45 – Could not find property [struts.valueStack] java.lang.NullPointerException at web.action.StuAction.getStus(StuAction.java:43) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:440) at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:279) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242) at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:163) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:249) at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:148) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:93) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:128) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:104) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:148) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:128) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468) at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:102) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619) 12:35:38,390 WARN OgnlValueStack:45 – Could not find property [org.apache.catalina.jsp_file] 小写也不行的、还是注入不了对象
	你好，请问问题解决了吗，我也遇到注入不了对象的问题
	我出现这样的情况，是因为少了spring和struts的插件包，可以试试是不是这个原因