用spring的AOP实现异常拦截
    Spring支持四种拦截类型：目标方法调用前（before），目标方法调用后（after），目标方法调用前后（around），以及目标方法抛出异常（throw）。
    最近用到spring的AOP来实现异常拦截，用到了spring的ThrowsAdvice。ThrowsAdvice是一个标示接口，我们可以在类中定义一个或多个，来捕获定义异常通知的bean抛出的异常，并在抛出异常前执行相应的方法。

    2. import org.springframework.aop.ThrowsAdvice;
    3. import org.springframework.aop.framework.ProxyFactory;
    5. import java.lang.reflect.Method;
    7. /**
    8.  * Copyright 2007 GuangZhou Cotel Co. Ltd.
    9.  * All right reserved.    
    10.  * 异常拦截类.      
    11.  * @author <a href="mailto:xiexingxing1121@126.com">AmigoXie</a>
    12.  * @version 1.0 
    13.  * Creation date: 2007-7-24 - 下午08:12:25
    14.  */
    15. public class ExceptionAdvisor implements ThrowsAdvice {
    16.     public static void main(String[] args) {
    17.         TestBean bean = new TestBean();
    18.         ProxyFactory pf = new ProxyFactory();
    19.         pf.setTarget(bean);
    20.         pf.addAdvice(new ExceptionAdvisor());
    22.         TestBean proxy = (TestBean) pf.getProxy();
    23.         try {
    24.             proxy.method1();
    25.         } catch (Exception ignore) {
    26.         }
    28.         try {
    29.             proxy.changeToNumber("amigo");
    30.         } catch (Exception ignore) {
    31.         }
    32.     }
    34.     /**
    35.      * 对未知异常的处理.
    36.      * @param method
    37.      * @param args
    38.      * @param target
    39.      * @param ex
    40.      * @throws Throwable
    41.      * @author <a href="mailto:xiexingxing1121@126.com">AmigoXie</a>
    42.      * Creation date: 2007-7-24 - 下午03:35:02
    43.      */
    44.     public void afterThrowing(Method method, Object[] args, Object target,
    45.             Exception ex) throws Throwable {
    46.         System.out.println("*************************************");
    47.         System.out.println("Error happened in class: " + target.getClass().getName());
    48.         System.out.println("Error happened in method: " + method.getName());
    50.         for (int i = 0; i < args.length; i++) {
    51.             System.out.println("arg[" + i + "]: " + args[i]);
    52.         }
    54.         System.out.println("Exception class: " + ex.getClass().getName());
    55.         System.out.println("*************************************");
    56.     }
    58.     /**
    59.      * 对NullPointerException异常的处理
    60.      * @param method
    61.      * @param args
    62.      * @param target
    63.      * @param ex
    64.      * @throws Throwable
    65.      * @author <a href="mailto:xiexingxing1121@126.com">AmigoXie</a>
    66.      * Creation date: 2007-7-24 - 下午01:17:35
    67.      */
    68.     public void afterThrowing(Method method, Object[] args, Object target,
    69.             NullPointerException ex) throws Throwable {
    70.         System.out.println("*************************************");
    71.         System.out.println("Error happened in class: " + target.getClass().getName());
    72.         System.out.println("Error happened in method: " + method.getName());
    74.         for (int i = 0; i < args.length; i++) {
    75.             System.out.println("args[" + i + "]: " + args[i]);
    76.         }
    78.         System.out.println("Exception class: " + ex.getClass().getName());
    79.         System.out.println("*************************************");
    80.     }
    81. }

    用spring boot的ControllerAdvice 只能是拦截controller类

    http://www.blogjava.net/amigoxie/archive/2007/07/24/132142.html