SPRING注入FIELD值

最新推荐文章于 2023-06-30 23:28:26 发布

原创最新推荐文章于 2023-06-30 23:28:26 发布 · 417 阅读

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文章标签：

#Spring #Bean #junit #XML #SQL

本文详细介绍了Spring中使用FieldRetrievingFactoryBean注入field值的方法，并通过具体案例展示了其应用。

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Spring注入field值
嘿嘿，今天偷懒，就记一点点内容，然后去看PPLIVE去！
注入field值
FieldRetrievingFactoryBean用来获得目标bean的field值。获得的值可注入给其他bean，也可直接定义成新的bean.
for example:
--------------------------------------------------------------------------------------------
package org.viking.spring.imp;

public class Son
{
private int age;

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}
}
--------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<bean id="son" class="org.viking.spring.imp.Son">
<property name="age">

<bean id="java.sql.Connection.TRANSACTION_SERIALIZABLE" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean"/>
</property>
</bean>
</beans>
--------------------------------------------------------------------------------------------
package org.viking.spring.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.viking.spring.imp.Son;

import junit.framework.TestCase;

public class TestInjectField extends TestCase
{
public void testInjectField()
{
ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml");
Son son = (Son)app.getBean("son");
System.out.println("系统获取son的age属性： " + son.getAge());

}
}
--------------------------------------------------------------------------------------------
下面这个是field值定义成bean实例。只需修改applicationContext.xml和测试类。
--------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<bean id="son" class="org.viking.spring.imp.Son">
<property name="age">

<bean id="java.sql.Connection.TRANSACTION_SERIALIZABLE" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean"/>
</property>
</bean>

<bean id="theAge" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean">
<property name="staticField">
<value>java.sql.Connection.TRANSACTION_SERIALIZABLE</value>
</property>
</bean>

</beans>

--------------------------------------------------------------------------------------------
package org.viking.spring.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.viking.spring.imp.Son;

import junit.framework.TestCase;

public class TestInjectField extends TestCase
{
public void testInjectField()
{
ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml");
Son son = (Son)app.getBean("son");
System.out.println("系统获取son的age属性： " + son.getAge());
System.out.println("系统获取theAge的值: " +app.getBean("theAge"));
}

}