Spring 如何获取字符串值并将其保存在数据库中

我正在使用spring表单标签和hibernate

我的jsp页面具有以下代码：

<tr><td><form:input path="userEnteredHostNameString" size="30" maxlength="200"/></td>
<td><form:input path="userEnteredDirectoryString" size="30" maxlength="200"/></td>
<td><form:input path="userEnteredUserNameString" size="20" maxlength="20"/></td>
<td><form:input path="userEnteredPasswordString" size="20" maxlength="20"/></td></tr>

在我的控制器中，我有以下代码：

FtpScanEvents f = new FtpScanEvents();
        if(location.getUserEnteredHostNameString()!=null){
            f.setHostName(location.getUserEnteredHostNameString());
            }
        if(location.getUserEnteredDirectoryString()!=null){
            f.setDirectory(location.getUserEnteredDirectoryString());
            }
        if(location.getUserEnteredUserNameString()!=null){
            f.setUserName(location.getUserEnteredUserNameString());
            }
        if(location.getUserEnteredPasswordString()!=null){
            f.setPassword(location.getUserEnteredPasswordString());
            }
        ftpDao.save(f);

FtpScanEvents表的主机名、目录、用户名、密码、位置Id、idx、Id列为

ftpscanevents的hbm映射文件：

<hibernate-mapping package="ca.ups.tundra.model">
    <class name="FtpScanEvents" table="FTP_SCAN_EVENTS">
        <id name="id" type="long">
            <generator class="native"/>
        </id>
        <property name="hostName" type="string" column="HOSTNAME" length="200"/>
        <property name="directory" type="string" column="DIRECTORY" length="200"/>
        <property name="userName" type="string" column="USERNAME" length="20"/>
        <property name="password" type="string" column="PASSWORD" length="20"/>
        <many-to-one name="location" class="Location" cascade="all">
            <column name="ID" not-null="true" />
        </many-to-one>
    </class>
</hibernate-mapping>

---

当涉及到

ftpDao.save（f）时程序终止并且控制台中没有错误..非常感谢您的任何建议..
在save方法中，我缺少一个属性。添加了一个if条件的属性，它成功了
 ur FtpDao.save code在哪里？添加了save方法的代码..在save或debug中添加打印逐步解决。映射文件中缺少一个属性。
<hibernate-mapping package="ca.ups.tundra.model">
    <class name="FtpScanEvents" table="FTP_SCAN_EVENTS">
        <id name="id" type="long">
            <generator class="native"/>
        </id>
        <property name="hostName" type="string" column="HOSTNAME" length="200"/>
        <property name="directory" type="string" column="DIRECTORY" length="200"/>
        <property name="userName" type="string" column="USERNAME" length="20"/>
        <property name="password" type="string" column="PASSWORD" length="20"/>
        <many-to-one name="location" class="Location" cascade="all">
            <column name="ID" not-null="true" />
        </many-to-one>
    </class>
</hibernate-mapping>

@Override
    @Transactional(propagation = Propagation.MANDATORY)
    public void save(E entity) {
        if(entity == null)
            throw new NullArgumentException("entity");
        Session s = sessionFactory.getCurrentSession();
        s.saveOrUpdate(entity);
    }