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| 处置接口 |
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/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/
///////////////////////////////////////////////////////////////////////////////////////
//File: disposeMethod.xml
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="destructiveBean" class="DestructiveBeanWithInterface">
<property name="filePath">
<value>c:/test.txt</value>
</property>
</bean>
</beans>
///////////////////////////////////////////////////////////////////////////////////////
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;
public class DestructiveBean implements InitializingBean {
private InputStream is = null;
public String filePath = null;
public void afterPropertiesSet() throws Exception {
System.out.println("Initializing Bean");
if (filePath == null) {
throw new IllegalArgumentException(
"You must specify the filePath property of " + DestructiveBean.class);
}
is = new FileInputStream(filePath);
}
public void destroy() {
System.out.println("Destroying Bean");
if (is != null) {
try {
is.close();
is = null;
} catch (IOException ex) {
System.err.println("WARN: An IOException occured"
+ " trying to close the InputStream");
}
}
}
public void setFilePath(String filePath) {
this.filePath = filePath;
}
}
///////////////////////////////////////////////////////////////////////////////////////
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;
public class DestructiveBeanWithInterface implements InitializingBean,
DisposableBean {
private InputStream is = null;
public String filePath = null;
public void afterPropertiesSet() throws Exception {
System.out.println("Initializing Bean");
if (filePath == null) {
throw new IllegalArgumentException(
"You must specify the filePath property of " + DestructiveBean.class);
}
is = new FileInputStream(filePath);
}
public void destroy() {
System.out.println("Destroying Bean");
if (is != null) {
try {
is.close();
is = null;
} catch (IOException ex) {
System.err.println("WARN: An IOException occured"
+ " trying to close the InputStream");
}
}
}
public void setFilePath(String filePath) {
this.filePath = filePath;
}
public static void main(String[] args) throws Exception {
ConfigurableListableBeanFactory factory = new XmlBeanFactory(
new FileSystemResource(
"build/disposeInterface.xml"));
DestructiveBeanWithInterface bean = (DestructiveBeanWithInterface) factory.getBean("destructiveBean");
System.out.println("Calling destroySingletons()");
factory.destroySingletons();
System.out.println("Called destroySingletons()");
}
}
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 DisposeInterface.zip( 1,199 k) |
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