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7.spring:SpringAOP（配置文件）
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SpringAOP（xml文件配置）
配置文件的方式，主要是在xml文件中进行配置，不使用注解！
目录：
AtithmeticCalculator.java
public interface AtithmeticCalculator {
int add(int i,int j);
int sub(int i,int j);
int mul(int i,int j);
int div(int i,int j);
}
AtithmeticCalculatorImp1.java
@Component
public class AtithmeticCalculatorImp1 implements AtithmeticCalculator{
public int add(int i, int j) {
int res = i + j;
return res;
}
public int sub(int i, int j) {
int res = i - j;
return res;
}
public int mul(int i, int j) {
int res = i * j;
return res;
}
public int div(int i, int j) {
int res = i / j;
return res;
}
}
LoggionAspect.java
public class LoggionAspect {
public void beforeMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
Object [] args = joinPoint.getArgs();
System.out.println("The method " + methodName + " begins with " + Arrays.asList(args));
}
public void afterMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends");
}
public void afterReturning(JoinPoint joinPoint, Object result){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends with " + result);
}
public void afterThrowing(JoinPoint joinPoint, Exception e){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " occurs excetion:" + e);
}
}
LoggionAspect2.java
public class LoggionAspect2 {
public void beforeMethod1(JoinPoint joinPoint){
System.out.println("--->beforeMethod1");
String methodName = joinPoint.getSignature().getName();
Object [] args = joinPoint.getArgs();
System.out.println("The method " + methodName + " begins with " + Arrays.asList(args));
System.out.println("--->beforeMethod1");
} public void afterMethod1(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends");
} public void afterReturning1(JoinPoint joinPoint, Object result){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends with " + result);
}
public void afterThrowing1(JoinPoint joinPoint, Exception e){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " occurs excetion:" + e);
}
applicationContext.xml
<!-- 配置bean -->
<bean id="atithmeticCalculator" class="com.MrChengsc.AOP.xml.AtithmeticCalculatorImp1"></bean><!-- 配置切面的Bean -->
<bean id="loggionAspect" class="com.MrChengsc.AOP.xml.LoggionAspect"></bean>
<bean id="loggionAspect2" class="com.MrChengsc.AOP.xml.LoggionAspect2"></bean><!-- 配置AOP -->
<aop:config>
<!-- 配置切点 表达式-->
<aop:pointcut expression="execution(* com.MrChengsc.AOP.xml.AtithmeticCalculator.*(int, int))" id="pointcut"/> <!-- 配置切面及通知 -->
<aop:aspect ref="loggionAspect2" order="">
<aop:before method="beforeMethod1" pointcut-ref="pointcut"/>
</aop:aspect>
<aop:aspect ref="loggionAspect" order="">
<aop:before method="beforeMethod" pointcut-ref="pointcut"/>
</aop:aspect>
</aop:config>
main
public static void main(String[] args) {
// AtithmeticCalculator atithmeticCalculator = null;
// atithmeticCalculator = new AtithmeticCalculatorImp();
//
// atithmeticCalculator.add(1, 3);
// System.out.println("---");
// atithmeticCalculator.sub(3, 1);
// System.out.println("---");
// atithmeticCalculator.mul(1, 3);
// System.out.println("---");
// atithmeticCalculator.div(10, 2);
// System.out.println("---"); ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
//强制的类型使用接口的类型
AtithmeticCalculator atithmeticCalculator = (AtithmeticCalculator) ctx.getBean(AtithmeticCalculator.class); int res = atithmeticCalculator.add(, );
System.out.println("res:" + res);
System.out.println("-----");
// int res1 = atithmeticCalculator.mul(2, 3);
// System.out.println("res1:" + res1); //异常代码的测试
// int res2 = atithmeticCalculator.div(10, 0);
// System.out.println("res2:" + res2);
}
The method add begins with [, ]
--->beforeMethod1
The method add begins with [, ]
--->beforeMethod1
res:
-----
注：
1.配置bean，实现aop的类
2.配置切面的bean
3.配置aop需要使用<aop:config>标签
4.使用<aop:pointcut expression="execution(* com.MrChengsc.AOP.xml.AtithmeticCalculator.*(int, int))" id="pointcut"/>
配置切点表达式
*：代表任意的
两个int：可以使用 .. 进行替换
5.配置切面以及通知使用<aop:aspect>
ref：引用已配置的切面类bean
order：切面的优先级（数值越小优先级越大）
6.标签：
<aop:before method="beforeMethod" pointcut-ref="pointcut"/> ：前置通知
<aop:after method=""/>：后置通知
<aop:after-returning method="" returning="" pointcut="">：执行成功拿返回值
<aop:around method=""/>：环绕通知
<aop:after-throwing method="" >：异常通知
属性：
pointcut-ref：引用切点表达式
method：切面类中的方法
returning：接受返回值
pointcut：切点表达式
