使用Spring进行Java数据库或XML处理?

问题描述

实际上，我是Java开发的新手.我发现Spring对于快速开发确实很有帮助.

请告诉我数据库[插入/更新/删除]上的链接或其他学习资料
使用Java在Java中使用.我必须为Oracle编写代码.


我还想知道Spring 3.2(Java)如何帮助我们管理xml(即读取，编写或修改)?



实际上，我正在尝试调用queryForInt()方法，但它显示NULL异常.当我使用以下代码使用相同的凭据来添加dB时:

Hi,

Actually I am new to Java development. I found Spring is really helpful for rapid development.

Please tell me the links or other Study materials on database [insert/update/delete]
in Java using Spring. I have to code for Oracle.


Also I would like to know how Spring 3.2 (Java) help us in managing the xml (i.e., reading, writing or modification)?



Actually I am trying to call queryForInt() method but it displays NULL exception. When I acces the dB with same credential using Following Code:

DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
dataSource.setUrl("jdbc:oracle:thin:@localhost:1521:xe");
dataSource.setUsername("userName");
dataSource.setPassword("pwd");

------在Bean中-----------------

------ In Bean -----------------

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
        <property name="url" value="jdbc:oracle:thin:@localhost:1521:xe"/>
        <property name="username" value="userName"/>
        <property name="password" value="pwd"/>
    </bean>

    <!-- DAOS -->
    <bean id="ProductDAO" class="br.edeploy.voive.dao.ProductDAO">
        <property name="dataSource" ref="dataSource"/>
    </bean>

---------关于ProductDAO类--------------

---------On ProductDAO Class --------------

try
{
  int i = getSimpleJdbcTemplate().queryForInt("Select * from ERP_PRODUCT", "");
}
catch(DataAccessException dax)
 {
      throw new Exception("Error: "+dax.getMessage());
 }

谢谢.

Thanks.

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