关于getHibernateTemplate().update()的问题

Question

我没写提交代码,不过看资料说提交操作已经被Spring封装在了update()这个函数里了.

Answer 1

"我没写提交代码,不过看资料说提交操作已经被Spring封装在了update()这个函数里了."怎么可能,你需要在spring的配置文件里面配置的

Answer 2

你执行的时候看看控制台的SQL语句，他有没执行啊？
如果执行了，是执行update还是save啊。。如果是执行save那么你在update前最好set一个oid给他，不然他就变成save了。就不update了。最好把全部代码放上来，不然我不知道从何看起啊。

Answer 3

public ActionForward update_user_info(ActionMapping mapping,    ActionForm  form, HttpServletRequest request,HttpServletResponse response)throws Exception {
DynaActionForm userForm=(DynaActionForm)form;
User user=(User)userForm.get("user");
         mgr.updateUser(user);
return mapping.findForward("passthrough2");
}
----------------------------------------------------------------------------------
它认为你的ＵＳＥＲ是个新对像，会重新分配ＯＩＤ，然后你又用了ＵＰＤＡＴＥ，可以试用getHibernateTemplate().updateOrUpdate(user);．

Answer 4

对update()这个函数还是有点晕.我把代码粘上来,朋友们帮看看哪地方写的有问题.//user对象定义User.java
package org.appfuse.model;
public class User extends BaseObject{
private String name;
private String password;
private String email;
private String www;
//为了便于观看,get和set函数被省略掉了
}//对象与数据库映射User.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="org.appfuse.model.User" table="t_user">
<id name="name" column="c_name" unsaved-value="0">
<generator class="assigned"/> //这个主键值希望通过输入来指定，而不希望系统自动生成，所以用了assigned
</id>
<property name="password" column="c_password" not-null="true"/>
<property name="email" column="c_email" not-null="true"/>
<property name="www"  column="c_www"/>
</class>
</hibernate-mapping>
//数据库接口UserDAO.java
package org.appfuse.dao;
import org.appfuse.model.User;
public interface UserDAO extends DAO{
public User getUser(String userName);
public void saveUser(User user);
public void updateUser(User user);
}//接口实现UserDAOHibernate.java
package org.appfuse.dao.hibernate;
import org.appfuse.dao.UserDAO;
import org.springframework.orm.hibernate.support.HibernateDaoSupport;
import org.appfuse.model.User;
public class UserDAOHibernate extends HibernateDaoSupport implements UserDAO{
public User getUser(String name)
{
return (User)getHibernateTemplate().get(User.class,name);
}
public void saveUser(User user)
{
getHibernateTemplate().save(user);
}
public void updateUser(User user)
{
getHibernateTemplate().update(user);
}  
}//事物对象接口UserManager.java
package org.appfuse.service;
import org.appfuse.model.User;
public interface UserManager{
public User getUser(String userName);
public void saveUser(User user);
public void updateUser(User user);
}//事物对象接口的实现UserManagerImpl.java
package org.appfuse.service.impl;
import org.appfuse.service.UserManager;
import org.appfuse.dao.UserDAO;
import org.appfuse.model.User;
public class UserManagerImpl implements UserManager{
private UserDAO dao;
public void setUserDAO(UserDAO dao)
  {this.dao=dao;}
public User getUser(String name)
{
return dao.getUser(name);
}
public void saveUser(User user)
{
dao.saveUser(user);
}
public void updateUser(User user)
{
dao.updateUser(user);
}

}//Spring配置文件applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
    "http://www.springframework.org/dtd/spring-beans.dtd"><beans>
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName"><value>org.hsqldb.jdbcDriver</value></property>
        <property name="url"><value>jdbc:hsqldb:db/appfuse</value></property>
        <property name="username"><value>sa</value></property>
        <property name="password"><value></value></property>
    </bean>    <!-- Hibernate SessionFactory -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSessionFactoryBean">
        <property name="dataSource"><ref local="dataSource"/></property>
        <property name="mappingResources">
            <list>
                <!-- Add list of .hbm.xml files here -->
                <value>org/appfuse/model/User.hbm.xml</value>
            </list>
        </property>
        <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">net.sf.hibernate.dialect.HSQLDialect</prop>
            <prop key="hibernate.hbm2ddl.auto">create</prop>
        </props>
        </property>
    </bean>    <!-- Transaction manager for a single Hibernate SessionFactory (alternative to JTA) -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate.HibernateTransactionManager">
        <property name="sessionFactory"><ref local="sessionFactory"/></property>
    </bean>
    
    <!-- Add DAOs here -->
    <bean id="userDAO" class="org.appfuse.dao.hibernate.UserDAOHibernate">
     <property name="sessionFactory">
     <ref local="sessionFactory"/>
     </property>
    </bean>
    
    <!-- Add Managers here -->
    <bean id="userManagerTarget" class="org.appfuse.service.impl.UserManagerImpl">
     <property name="userDAO">
     <ref local="userDAO"/>
     </property>
    </bean>
    <bean id="userManager" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
     <property name="transactionManager">
     <ref local="transactionManager"/>
     </property>
     <property name="target">
     <ref local="userManagerTarget"/>
     </property>
     <property name="transactionAttributes">
     <props>
     <prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="remove*">PROPAGATION_REQUIRED</prop>
<prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
     </props>
     </property>
    </bean>
   
</beans>

Answer 5

//事物处理控制中心UserAction.jsp
package org.appfuse.web;
import org.apache.struts.actions.DispatchAction;
import org.appfuse.service.UserManager;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.ActionMessage;
import org.appfuse.model.User;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.DynaActionForm;
public class UserAction extends DispatchAction{
private UserManager mgr=null;
public void setUserManager(UserManager userManager)
{this.mgr=userManager;}

//为了便于观看，其他事物处理函数没写，仅留这个更新操作函数
public ActionForward update_user_info(ActionMapping mapping, ActionForm form,
            HttpServletRequest request,
            HttpServletResponse response)throws Exception {
DynaActionForm userForm=(DynaActionForm)form;
User user=(User)userForm.get("user");
     mgr.updateUser(user);
return mapping.findForward("passthrough2");
}
}//struts配置文件struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
    "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
    <!-- ======================================== Form Bean Definitions -->
    <form-beans>
        <form-bean
            name="userForm" type="org.apache.struts.validator.DynaValidatorForm">
            <form-property name="user" type="org.appfuse.model.User"/>
        </form-bean>
    </form-beans>
    <!-- =================================== Global Forward Definitions -->
    <global-forwards>
    </global-forwards>
    <!-- =================================== Action Mapping Definitions -->
    <action-mappings>
     <action path="/user"
type="org.springframework.web.struts.DelegatingActionProxy" name="userForm"
scope="session" parameter="method" >
<forward name="index" path="/myindex.jsp"/>
<forward name="register" path="/register.jsp"/>
<forward name="register_confirm" path="/register_confirm.jsp"></forward>
<forward name="passthrough1" path="/passthrough.jsp?showword=zhuce"></forward>
<forward name="revise" path="/revise.jsp"></forward>
<forward name="passthrough2" path="/passthrough.jsp?showword=xiugai"></forward>
</action>
    </action-mappings>
    <!-- ================================ Message Resources Definitions -->
    <message-resources parameter="messages"/>
    <!-- ======================================= Plug Ins Configuration -->
    <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
     <set-property property="contextConfigLocation" value="/WEB-INF/applicationContext.xml, /WEB-INF/action-servlet.xml"/>
    </plug-in>
    <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property
            property="pathnames" value="/WEB-INF/validator-rules.xml,
                                        /WEB-INF/validation.xml"/>
    </plug-in>
</struts-config>//另一struts配置文件action-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
    "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <!-- Define Struts Actions here -->
    <bean name="/user" class="org.appfuse.web.UserAction" singleton="false">
<property name="userManager">
<ref bean="userManager"/>
</property>
</bean>
</beans>//修改注册信息的页面revise.jsp
<%@page language="java" pageEncoding="UTF-8"%>
<%@page contentType="text/html;charset=UTF-8"%>
<%@include file="/taglibs.jsp"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>用户修改注册信息</title>
<link rel=stylesheet href="style.css" type="text/css">
</head>
<body>
<%@include file="top.htm"%>
<%@include file="/messages.jsp"%>
<center>
<p>请修改您的个人信息(标注'*'的内容必须填写)</p>
<html:form action="/user" focus="user.password" 
onsubmit="return validateUserForm(this)">
<input type="hidden" name="method" value="update_user_info">
<table width='70%' border='1' height='160'>
<tr>
<td align='left' colspan='2'>登录名:
<html:text property="user.name"/>
</td>
</tr>
<tr>
<td align='left'>密码：<html:password property="user.password"/></td>
<td align='left'>确认:<input type="password" name="re_password"
value=<bean:define id="user" name="userForm" property="user"/>
  <bean:write name="user" property="password"/>>
</td>
</tr>
<tr>
<td align='left'>Email:<html:text property="user.email"/></td>
<td align='left'>主页：<html:text property="user.www"/></td>
</tr>
<tr>
<td colspan='2' align='center'>
<html:submit styleClass="button">确认修改</html:submit>
</td>
</tr>
</table>
</html:form>
<html:javascript formName="userForm"/>
</center>
<%@include file="bottom.htm"%>
</body>
</html>

Answer 6

这是程序运行的日志DEBUG - TransactionInterceptor.invoke(168) | Getting transaction for method 'updateUser' in class [org.appfuse.service.UserManager]
DEBUG - AbstractPlatformTransactionManager.getTransaction(163) | Using transaction object [org.springframework.orm.hibernate.HibernateTransactionObject@13f903b]
DEBUG - AbstractPlatformTransactionManager.getTransaction(214) | Creating new transaction
DEBUG - SessionFactoryUtils.getSession(183) | Opening Hibernate session
DEBUG - SessionImpl.<init>(555) | opened session
DEBUG - HibernateTransactionManager.doBegin(271) | Opened new session [net.sf.hibernate.impl.SessionImpl@1784911] for Hibernate transaction
DEBUG - HibernateTransactionManager.doBegin(280) | Beginning Hibernate transaction on session [net.sf.hibernate.impl.SessionImpl@1784911]
INFO - DriverManagerDataSource.getConnectionFromDriverManager(152) | Creating new JDBC connection to [jdbc:hsqldb:db/appfuse]
DEBUG - HibernateTransactionManager.doBegin(292) | Setting JDBC connection [org.hsqldb.jdbcConnection@1ed957d] read-only
DEBUG - JDBCTransaction.begin(37) | begin
DEBUG - JDBCTransaction.begin(41) | current autocommit status:true
DEBUG - JDBCTransaction.begin(43) | disabling autocommit
DEBUG - TransactionSynchronizationManager.bindResource(141) | Bound value [org.springframework.orm.hibernate.SessionHolder@f16568] for key [net.sf.hibernate.impl.SessionFactoryImpl@ec32de] to thread [http-8080-Processor25]
DEBUG - TransactionSynchronizationManager.bindResource(141) | Bound value [org.springframework.jdbc.datasource.ConnectionHolder@38c8c5] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@1f5d699] to thread [http-8080-Processor25]
DEBUG - TransactionSynchronizationManager.initSynchronization(192) | Initializing transaction synchronization
DEBUG - TransactionSynchronizationManager.getResource(117) | Retrieved value [org.springframework.orm.hibernate.SessionHolder@f16568] for key [net.sf.hibernate.impl.SessionFactoryImpl@ec32de] bound to thread [http-8080-Processor25]
DEBUG - SessionImpl.doUpdateMutable(1439) | updating [org.appfuse.model.User#sss]
DEBUG - TransactionInterceptor.invoke(208) | Invoking commit for transaction on method 'updateUser' in class [org.appfuse.service.UserManager]
DEBUG - AbstractPlatformTransactionManager.triggerBeforeCommit(432) | Triggering beforeCommit synchronization
DEBUG - AbstractPlatformTransactionManager.triggerBeforeCompletion(447) | Triggering beforeCompletion synchronization
INFO - AbstractPlatformTransactionManager.commit(315) | Initiating transaction commit
DEBUG - HibernateTransactionManager.doCommit(382) | Committing Hibernate transaction on session [net.sf.hibernate.impl.SessionImpl@1784911]
DEBUG - JDBCTransaction.commit(59) | commit
DEBUG - SessionImpl.afterTransactionCompletion(585) | transaction completion
DEBUG - JDBCTransaction.toggleAutoCommit(103) | re-enabling autocommit
DEBUG - AbstractPlatformTransactionManager.triggerAfterCompletion(477) | Triggering afterCompletion synchronization
DEBUG - TransactionSynchronizationManager.clearSynchronization(232) | Clearing transaction synchronization
DEBUG - TransactionSynchronizationManager.unbindResource(163) | Removed value [org.springframework.jdbc.datasource.ConnectionHolder@38c8c5] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@1f5d699] from thread [http-8080-Processor25]
DEBUG - TransactionSynchronizationManager.unbindResource(163) | Removed value [org.springframework.orm.hibernate.SessionHolder@f16568] for key [net.sf.hibernate.impl.SessionFactoryImpl@ec32de] from thread [http-8080-Processor25]
DEBUG - HibernateTransactionManager.doCleanupAfterCompletion(461) | Resetting read-only flag of connection [org.hsqldb.jdbcConnection@1ed957d]
DEBUG - HibernateTransactionManager.doCleanupAfterCompletion(475) | Closing Hibernate session [net.sf.hibernate.impl.SessionImpl@1784911] after transaction
DEBUG - SessionFactoryUtils.closeSessionIfNecessary(348) | Closing Hibernate session
DEBUG - SessionImpl.close(573) | closing session
DEBUG - SessionImpl.disconnect(3332) | disconnecting session
DEBUG - SessionImpl.afterTransactionCompletion(585) | transaction completion