第一步，引入jar。

第二步，在spring的類載入掃描配置檔案中加入

<aop:config proxy-target-class="true"/>
<aop:aspectj-autoproxy />

<context:component-scan base-package="com.audaque.**.aop" />

第三步，編寫自己的處理類

package com.audaque.module.datasource.aop;

import com.audaque.module.datasource.model.DataSource;
import com.audaque.module.datasource.utils.AESUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * @param null
* @Description:    資料來源密碼處理
* @Author:         LGH
* @CreateDate:     2018/10/18 11:31
*/
@Aspect
@Component
public class PasswordFieldHandler {
   
/* @Before("execution(* com.audaque.module.datasource.mapper..*.add*(..))")
    public void add_Before(JoinPoint joinPoint){
        Object[] objArr = joinPoint.getArgs();
        for (Object object : objArr) {
         invokeEnum(object,"getValueByLable");
      }
    }
   @Before("execution(* com.audaque.module.datasource.mapper..*.insert*(..))")
   public void insert_Before(JoinPoint joinPoint){
      Object[] objArr = joinPoint.getArgs();
      for (Object object : objArr) {
         invokeEnum(object,"getValueByLable");
      }
   }*/

   
   @AfterReturning(returning = "entity",value = "execution(* com.audaque.module.datasource.mapper.DataSourceMapper.findBy*(..))")
    public void get_After(JoinPoint joinPoint,Object entity) throws IllegalAccessException, IntrospectionException, InvocationTargetException {
      invokeEnum(entity);
    }


   private void invokeEnum(Object entity) throws IntrospectionException, InvocationTargetException, IllegalAccessException {
      String id = "0";
      System.out.println("這裡是目標方法執行前先執行22");

      Class clazz = entity.getClass();
      DataSource dataSource=(DataSource)entity;
      //獲取主鍵值
      Field[] fields = entity.getClass().getDeclaredFields();
      for (Field field : fields) {
         if("password".equals(field.getName())){
            System.out.println(field.getName());
            PropertyDescriptor pd = new PropertyDescriptor(field.getName(), entity.getClass());
            Method getMethod = pd.getReadMethod();
            Object o1 = getMethod.invoke(entity);
            System.out.println("解壓前"+o1.toString());
            String password=AESUtils.invokeDecryptEncode(o1.toString());
            System.out.println("解壓後"+password);
            dataSource.setPassword(password);
         // field.set(entity, password);
            break;
         }
      }
      entity=dataSource;
   }
}
 

這裡做了密碼的解密，因為是多資料來源管理，很多地方呼叫，密碼都需要解密，故在這裡統一解密，

com.audaque.module.datasource.mapper.DataSourceMapper.findBy 指定此類的方法名以findBy開頭的方法抓取，我是查詢之後抓取。使用@AfterReturning註解