SaveOfficeAction.java出错：java.lang.NullPointerException
package we.app.action;
import we.app.data.*;
import com.opensymphony.xwork2.ActionSupport;
public class SaveOfficeAction extends ActionSupport {
private IOffice B_Office;
private IOfficeDAO B_OfficeDAO;
private String Tips;
public IOffice getB_Office() {
return B_Office;
}
public void setB_Office(IOffice b_Office) {
B_Office = b_Office;
}
public IOfficeDAO getB_OfficeDAO() {
return B_OfficeDAO;
}
public void setB_OfficeDAO(IOfficeDAO b_OfficeDAO) {
B_OfficeDAO = b_OfficeDAO;
}
public String getTips() {
return Tips;
}
public void setTips(String tips) {
Tips = tips;
}
public String execute() throws Exception
{
this.Tips=this.getB_OfficeDAO().findById(1).getOfficename().toString();
//this.Trans_OfficeDAO.save(this.B_Office);
return SUCCESS;
}
}
1、index.jsp：
<%@taglib uri="/struts-tags" prefix="s"%><%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:form action="SaveOffice">
<s:textfield name="B_Office.officename" label="officename"></s:textfield>
<s:submit></s:submit>
</s:form>
<br>
</body>
</html>
2、hibernate.cfg.xml:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
<property name="connection.url">
jdbc:jtds:sqlserver://192.168.0.100:4628/tnew
</property>
<property name="connection.username">sa</property>
<property name="connection.password">111</property>
<property name="connection.driver_class">
net.sourceforge.jtds.jdbc.Driver
</property>
<property name="myeclipse.connection.profile">
sqlserverjtds
</property>
<mapping resource="we/app/data/Peop.hbm.xml" />
<mapping resource="we/app/data/Office.hbm.xml" />
</session-factory>
</hibernate-configuration>
3、ApplicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd"
>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation"
value="classpath:hibernate.cfg.xml">
</property>
</bean>
<bean id="PeopDAO" class="we.app.data.PeopDAO">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<bean id="B_OfficeDAO" class="we.app.data.OfficeDAO">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<bean id="B_Office" class="we.app.data.Office"></bean>
<bean id="B_Peop" class="we.app.data.Peop"></bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
<bean id="Trans_OfficeDAO"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="target">
<ref local="B_OfficeDAO" />
</property>
<property name="transactionAttributes">
<props>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
</beans>
4、
package we.app.data;
import java.util.List;
public interface IOfficeDAO {
// property constants
public static final String OFFICENAME = "officename";
public abstract void save(IOffice transientInstance);
public abstract void delete(IOffice persistentInstance);
public abstract IOffice findById(java.lang.Integer id);
public abstract List findByExample(IOffice instance);
public abstract List findByProperty(String propertyName, Object value);
public abstract List findByOfficename(Object officename);
public abstract List findAll();
public abstract IOffice merge(Office detachedInstance);
public abstract void attachDirty(IOffice instance);
public abstract void attachClean(IOffice instance);
}
