spring - How to get spring bean reference to java field automatically

Question

my spring XML is below,

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/test" />
    <property name="username" value="root" />
    <property name="password" value="root" />       
</bean>

<bean id="jTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <constructor-arg ref="dataSource" />
</bean>

I'm creating the spring bean context when the server is starting up. When I hit on the submit button of the JSP page, it should call the servlet and executes the SQL Query.

Without doing JdbcTemplate jTemplate = (JdbcTemplate)context.getBean("jTemplate") is there anyway I can get the jTemplate object automatically injected to my java property?

my java property is this,

private JdbcTemplate jTemplate;

So, simply I want to use the jTemplate without just doing JdbcTemplate jTemplate = (JdbcTemplate)context.getBean("jTemplate")

Sorry guys I'm bit new to Spring, If you don't get what I'm saying please ask me again.

Answer 1

使用自动装配，可以通过三种方式

1. 按名字

2. 按类型

3. 按构造函数

进一步阅读可在此处获得

就像一个解决方案是

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" autowire="byName">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/test" />
    <property name="username" value="root" />
    <property name="password" value="root" />
</bean>

<bean name="jTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <constructor-arg ref="dataSource" />
</bean>

像这样使用@Autowired注释自动获取这个bean。

@Autowired
private JdbcTemplate jTemplate;