spring 拦截器

<!-- 拦截器1 -->
	<bean id="user" class="org.springframework.aop.framework.ProxyFactoryBean">
		<property name="proxyInterfaces">
			<value>com.oys.zexaple.interceptor.IUser</value>
		</property>
		<property name="interceptorNames">
			<list>
				<value>loginAdvice</value>
			</list>
		</property>
		<property name="target">
			<ref bean="userTarget" />
		</property>
	</bean>
	<!-- 拦截器2 -->
	<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<list>
				<value>helloSpeaker</value>
				<value>helloSpeaker2</value>
			</list>
		</property>
		<property name="interceptorNames">
			<list>
				<value>logInterceptor</value>
				<value>agumentInterceptor</value>
			</list>
		</property>
	</bean>
<!-- 拦截器3 事务  -->
	<bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
		<property name="transactionManager" ref="transactionManager" />
		<property name="transactionAttributes">
			<props>
				<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="*">PROPAGATION_REQUIRED,-Exception</prop>
				<prop key="*">ISOLATION_SERIALIZABLE</prop>
			</props>
		</property>
	</bean>
	<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<list>
				<value>*Service</value>
				<value>*DAO</value>
			</list>
		</property>
		<property name="interceptorNames">
			<list>
				<value>transactionInterceptor</value>
			</list>
		</property>
	</bean>

 拦截器1：

package com.oys.zexaple.interceptor;

import java.lang.reflect.Method;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.AfterReturningAdvice;
import org.springframework.aop.MethodBeforeAdvice;

public abstract class BaseAdvice implements MethodBeforeAdvice, MethodInterceptor, AfterReturningAdvice {
	public void afterReturning(Object returnValue, Method method, Object[] args, Object target) {
	}

	public Object invoke(MethodInvocation invocation)  throws Throwable {
		return invocation;
	}

	public void before(Method method, Object[] args, Object target) {
	}

}

 

package com.oys.zexaple.interceptor;

public interface IUser {
  public void Login(String username,String password);
}

 

package com.oys.zexaple.interceptor;

import java.lang.reflect.Method;

import org.aopalliance.intercept.MethodInvocation;
import org.springframework.stereotype.Repository;

@Repository("loginAdvice")
public class LoginAdvice extends BaseAdvice {
	@Override
	public void afterReturning(Object returnValue, Method method, Object[] args, Object target) {
		System.out.println("----------  方法名:afterReturning ----------------");
		// 将用户登录信息写入日志文件
	}

	@Override
	public Object invoke(MethodInvocation invocation) throws Throwable {
		System.out.println("----------  方法名:invoke ----------------");
		String username = invocation.getArguments()[0].toString();
		String password = invocation.getArguments()[1].toString();
		System.out.println(username+"===="+password);
		//在这里进行相关的验证操作   
		return invocation.proceed();
	}

	@Override
	public void before(Method method, Object[] args, Object target) {
		System.out.println("---------- 方法名:before ----------------");
		String username = (String) args[0];
		String passowrd = (String) args[1];
		// 在这里进行数据库查找操作
	}
}

 

package com.oys.zexaple.interceptor;

import org.springframework.stereotype.Repository;

@Repository("userTarget")
public class UserImpl implements IUser {
	public void Login(String username, String password) {
		System.out.println("----------方法名:Login ----------------");
	}

}

 拦截器2

package com.oys.zexaple.interceptor2;

import org.springframework.stereotype.Service;

@Service("helloSpeaker")
public class HelloSpeaker implements IHello {

	public void sayHello(String name) {
		System.out.println("Hello," + name);
	}
}

 

package com.oys.zexaple.interceptor2;

import org.springframework.stereotype.Service;

@Service("helloSpeaker2")
public class HelloSpeaker2 implements IHello {  

public void sayHello(String name) {  
System.out.println("Welcome to world," + name);  
}  
}  

 

package com.oys.zexaple.interceptor2;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.stereotype.Service;
@Service("agumentInterceptor")
public class InterceptorForAgument implements MethodInterceptor {

	public Object invoke(MethodInvocation methodInvocation) throws Throwable {
		String name = null;
		Object[] args = methodInvocation.getArguments();
		for (int i = 0; i < args.length; i++) {
			if (args[i] instanceof String) {
				name = (String) args[i];
			}
		}
		System.out.println("the argument is : " + name);
		Object result = methodInvocation.proceed();
		System.out.println("the argument is proceed");
		return result;
	}
}

 

package com.oys.zexaple.interceptor2;
public interface IHello {  

public void sayHello(String name);  
}  

 

package com.oys.zexaple.interceptor2;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.stereotype.Service;

@Service("logInterceptor")
public class InterceptorForLog implements MethodInterceptor {

	public Object invoke(MethodInvocation methodInvocation) throws Throwable {
		System.out.println("Log start...");
		Object result = null;
		result = methodInvocation.proceed();
		System.out.println("Log end...");
		return result;
	}
}

 测试代码：

package test;

import java.util.List;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.oys.base.domain.User;
import com.oys.base.service.UserService;
import com.oys.zexaple.aop.AServiceImpl;
import com.oys.zexaple.aop.BServiceImpl;
import com.oys.zexaple.interceptor.IUser;
import com.oys.zexaple.interceptor2.IHello;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:conf/applicationContext.xml" })
//@ContextConfiguration(locations="classpath:conf/applicationContext.xml") // 加载配置
public class TestServiceTest {
	@Resource
	private UserService userService;
	@Autowired
	private IUser user;
	@Autowired
	private BServiceImpl bService;
	@Autowired
	private AServiceImpl aService;
	@Resource
	private IHello helloSpeaker;

	@Test
	public void findAllUser() {
		List<User> list=userService.findAllUser();
		System.out.println(list.size());
	}
	@Test
	public void testaop1(){
	}
	@Test
	public void testaop2(){
		bService.barB("msg", "type");
		System.out.println("----------------------");
		aService.barA();
	}
	@Test
	public void interceptors(){
		user.Login("username", "123456");
	}
	@Test
	public void interceptors2(){
		helloSpeaker.sayHello("longyg");  
	}

}