单例模式

package com.test; import java.lang.reflect.Proxy; import org.junit.Test; import org.springframework.beans.factory.support.DefaultListableBeanFactory; import org.springframework.beans.factory.xml.XmlBeanDefinitionReader; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext; import org.springframework.core.io.ClassPathResource; import com.test.aop.Manager; import com.test.aware.ApplicationUtil; import com.test.bean.Person; import com.test.designermodel.proxymodel.AbstractRole; import com.test.designermodel.proxymodel.DynamicProxyRole; import com.test.designermodel.proxymodel.ProxyRole; import com.test.designermodel.proxymodel.RealRole; import com.test.designermodel.singletonmodel.Singleton; import com.test.jdkproxy.Action; import com.test.jdkproxy.ActionImp; import com.test.jdkproxy.HandlerImp; import com.test.proxy.SqlManager; public class JunitTest { /** * 测试BeanFactory */ // @Test public void testBeanFactory(){ ClassPathResource resource = new ClassPathResource("bean.xml"); DefaultListableBeanFactory bf = new DefaultListableBeanFactory(); XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(bf); reader.loadBeanDefinitions(resource); Person p = bf.getBean("person", Person.class); p.info(); } /** * 测试ApplicationContext */ // @Test public void testApplicationContext(){ ApplicationContext ctx = new FileSystemXmlApplicationContext("H:\\workspaceST\\cygoattest\\src\\test\\resources\\bean.xml"); Person p = (Person) ctx.getBean("person"); p.info(); } /** * 测试jdk动态代理 */ // @Test public void testJdkProxy(){ Action obj = (Action) Proxy.newProxyInstance(ActionImp.class.getClassLoader(), ActionImp.class.getInterfaces(), new HandlerImp(new ActionImp())); obj.action(); } /** * 测试Spring动态代理 */ // @Test public void testProxyFactoryBean(){ ApplicationContext bf = new FileSystemXmlApplicationContext("H:\\workspaceST\\cygoattest\\src\\test\\resources\\bean.xml"); SqlManager manager = (SqlManager) bf.getBean("factoryBean"); manager.insert(""); } /** * 测试Aware感知特性 */ // @Test public void testAware(){ ApplicationContext ctx = new FileSystemXmlApplicationContext("H:\\workspaceST\\cygoattest\\src\\test\\resources\\bean.xml"); ApplicationUtil util = (ApplicationUtil) ctx.getBean("applicationUtil",ApplicationUtil.class); System.out.println(util.getApplicationContext()); System.out.println(util.getBeanName()); } /** * 测试Spring Aop */ // @Test public void testSpringAop(){ ApplicationContext ctx = new ClassPathXmlApplicationContext("bean.xml"); Manager manager = (Manager) ctx.getBean("manager"); System.out.println("------------------------测试插入方法---------------------------"); manager.insert("insert into sp_user(1,2,'1111')"); System.out.println("------------------------测试查询所有数据的查询方法---------------------------"); manager.findAll(); System.out.println("------------------------测试查询方法---------------------------"); manager.find("select * from sp_user"); } }