Spring aop 例子

在使用spring aop的时候报错了：The prefix "aop" for element "aop:aspectj-autoproxy" is not bound.原因是有一些地址没有被引入：

1 以下是一个完整配置AOP的例子。
2
3 首先是文件项目结构：

SpringAOPTest.java 复制代码

1import java.util.ArrayList;
2import java.util.List;
3import org.junit.Test;
4import org.springframework.context.ApplicationContext;
5import org.springframework.context.support.ClassPathXmlApplicationContext;
6
7public class SpringAOPTest {
8    [@Test](https://my.oschina.net/azibug) public void interceptorTest(){
9        ApplicationContext cxt = new ClassPathXmlApplicationContext("applicationContext-Test.xml");
10        UserService userService = (UserService)cxt.getBean("userService");
11        List list =new ArrayList();
12        list =userService.queryUserList();
13        System.out.println("sd:"+list.size());
14    }
15}

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applicationContext-Test.xml 复制代码

1<?xml version="1.0" encoding="UTF-8"?>
2<beans xmlns="http://www.springframework.org/schema/beans"
3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
4    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
5    xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc"
6     
7    xsi:schemaLocation="
8     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
9     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
10     http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
11     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
12     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
13     http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
14    
15    
16    <!-- 通过配置的方式，定义bean  -->
17    <bean id="userService" class="test.UserServiceImpl"></bean>
18
19    <!-- 启用@AspectJ风格的切面声明 --> 
20    <aop:aspectj-autoproxy/> 
21    
22    <!-- 通过配置的方式，定义日志切面bean  -->
23    <bean id="aspetbean" class="test.LogInterceptor"/>
24
25   <aop:config>
26     <aop:aspect id="asp" ref="aspetbean">
27        <!--定义切入点-->  
28        <aop:pointcut id="mycut" expression="execution(* test.**.*(..))" />
29        <!-- 第一个*代表所有的返回值类型 第二个*代表所有的类 第三个*代表类所有方法 最后一个..代表所有的参数。 -->
30        <!--定义通知（Advice）-->  
31        <aop:before pointcut-ref="mycut"  method="doAccessCheck" /> <!-- 前置通知  -->
32        <aop:after-returning pointcut-ref="mycut"  method="doAfterReturning" /> <!-- 后置通知  -->
33        <aop:after-throwing pointcut-ref="mycut"  method="doAfterThrowing" /> <!-- 例外通知  -->
34        <aop:after pointcut-ref="mycut"  method="doAfter" /> <!-- 最后通知  -->
35        <aop:around pointcut-ref="mycut"  method="doBasicProfiling" /> <!-- 环绕通知  -->
36     </aop:aspect>
37  </aop:config>
38</beans>

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LogInterceptor.java 复制代码

1import org.aspectj.lang.ProceedingJoinPoint;
2/**
3 * 切面 
4 * 例子：日志记录
5 */
6public class LogInterceptor {    
7    public void doAccessCheck() {
8        System.out.println("前置通知");
9    }
10    public void doAfterReturning() {
11        System.out.println("后置通知");
12    }
13    public void doAfter() {
14        System.out.println("最终通知");
15    }
16    public void doAfterThrowing() {
17        System.out.println("例外通知");
18    }
19    public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {
20        System.out.println("进入方法");
21        Object result = pjp.proceed();
22        System.out.println("退出方法");
23        return result;
24    }
25}
26
27复制代码
28
29User.java
30复制代码
31
32public class User {
33    private String id;
34    private String name;
35    private String sex;
36    private int age;
37    public String getId() {
38        return id;
39    }
40    public void setId(String id) {
41        this.id = id;
42    }
43    public String getName() {
44        return name;
45    }
46    public void setName(String name) {
47        this.name = name;
48    }
49    public String getSex() {
50        return sex;
51    }
52    public void setSex(String sex) {
53        this.sex = sex;
54    }
55    public int getAge() {
56        return age;
57    }
58    public void setAge(int age) {
59        this.age = age;
60    }   
61}
62
63复制代码
64
65UserService.java
66复制代码
67
68import java.util.List;
69public interface UserService {
70    public User queryUserById(int id);    
71    public List<User> queryUserList();
72    
73}

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UserServiceImpl.java 复制代码

1import java.util.ArrayList;
2import java.util.List;
3public class UserServiceImpl implements UserService {    
4    /**
5     * 通过id查询用户信息
6     */
7    @Override
8    public User queryUserById(int id) {
9        System.out.println("=========进入queryUserById方法==========");
10        User user = null;
11        if(id==1){
12            user = new User();
13            user.setAge(18);
14            user.setId("1");
15            user.setName("张三");
16            user.setSex("1");    
17        }
18        return user;
19    }  
20    /**
21     * 查询用户列表
22     */
23    @Override
24    public List<User> queryUserList() {
25        System.out.println("=========进入queryUserList方法==========");
26        User user1 = new User();
27        user1.setAge(18);
28        user1.setId("1");
29        user1.setName("张三");
30        user1.setSex("1");
31
32        User user2 = new User();
33        user2.setAge(18);
34        user2.setId("1");
35        user2.setName("张三");
36        user2.setSex("1");
37
38        ArrayList<User> userList = new ArrayList<User>();
39        userList.add(user1);
40        userList.add(user2);
41        return userList;
42    }
43}

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运行结果：